/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=DEEPEST --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/loops/lu.cmp.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:35:19,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:35:19,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:35:19,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:35:19,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:35:19,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:35:19,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:35:19,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:35:19,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:35:19,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:35:19,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:35:19,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:35:19,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:35:19,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:35:19,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:35:19,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:35:19,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:35:19,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:35:19,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:35:19,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:35:19,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:35:19,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:35:19,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:35:19,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:35:19,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:35:19,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:35:19,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:35:19,555 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:35:19,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:35:19,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:35:19,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:35:19,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:35:19,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:35:19,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:35:19,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:35:19,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:35:19,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:35:19,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:35:19,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:35:19,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:35:19,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:35:19,575 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 [2020-10-27 20:35:19,630 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:35:19,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:35:19,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:35:19,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:35:19,636 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:35:19,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:35:19,637 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:35:19,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:35:19,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:35:19,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:35:19,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:35:19,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:35:19,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:35:19,639 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:35:19,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:35:19,640 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:35:19,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:35:19,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:35:19,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:35:19,640 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:35:19,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:35:19,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:35:19,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:35:19,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:35:19,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:35:19,642 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:35:19,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:35:19,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:35:19,642 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:35:19,642 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:35:20,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:35:20,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:35:20,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:35:20,157 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:35:20,158 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:35:20,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/lu.cmp.c [2020-10-27 20:35:20,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1482180bb/73597edea109476ab2b38aed9136387b/FLAGb07c20a18 [2020-10-27 20:35:20,936 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:35:20,937 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/lu.cmp.c [2020-10-27 20:35:20,947 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1482180bb/73597edea109476ab2b38aed9136387b/FLAGb07c20a18 [2020-10-27 20:35:21,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1482180bb/73597edea109476ab2b38aed9136387b [2020-10-27 20:35:21,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:35:21,255 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:35:21,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:35:21,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:35:21,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:35:21,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:35:21" (1/1) ... [2020-10-27 20:35:21,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f00e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:35:21, skipping insertion in model container [2020-10-27 20:35:21,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:35:21" (1/1) ... [2020-10-27 20:35:21,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:35:21,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:35:21,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:35:21,602 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:35:21,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:35:21,729 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:35:21,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:35:21 WrapperNode [2020-10-27 20:35:21,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:35:21,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:35:21,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:35:21,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:35:21,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:35:21" (1/1) ... [2020-10-27 20:35:21,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:35:21" (1/1) ... [2020-10-27 20:35:21,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:35:21" (1/1) ... [2020-10-27 20:35:21,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:35:21" (1/1) ... [2020-10-27 20:35:21,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:35:21" (1/1) ... [2020-10-27 20:35:21,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:35:21" (1/1) ... [2020-10-27 20:35:21,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:35:21" (1/1) ... [2020-10-27 20:35:21,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:35:21,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:35:21,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:35:21,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:35:21,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:35:21" (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 [2020-10-27 20:35:21,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:35:21,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:35:21,954 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:35:21,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 20:35:21,955 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs [2020-10-27 20:35:21,956 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:35:21,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ludcmp [2020-10-27 20:35:21,956 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:35:21,956 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:35:21,956 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:35:21,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:35:21,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 20:35:21,958 INFO L130 BoogieDeclarations]: Found specification of procedure ludcmp [2020-10-27 20:35:21,958 INFO L130 BoogieDeclarations]: Found specification of procedure fabs [2020-10-27 20:35:21,959 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:35:21,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 20:35:21,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 20:35:21,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:35:21,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:35:21,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:35:21,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:35:21,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:35:21,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:35:22,575 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:35:22,575 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-27 20:35:22,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:35:22 BoogieIcfgContainer [2020-10-27 20:35:22,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:35:22,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:35:22,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:35:22,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:35:22,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:35:21" (1/3) ... [2020-10-27 20:35:22,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d3bc53f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:35:22, skipping insertion in model container [2020-10-27 20:35:22,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:35:21" (2/3) ... [2020-10-27 20:35:22,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d3bc53f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:35:22, skipping insertion in model container [2020-10-27 20:35:22,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:35:22" (3/3) ... [2020-10-27 20:35:22,587 INFO L111 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2020-10-27 20:35:22,599 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:35:22,604 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:35:22,618 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:35:22,646 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:35:22,647 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:35:22,647 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:35:22,647 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:35:22,647 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:35:22,647 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:35:22,647 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:35:22,648 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:35:22,667 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-10-27 20:35:22,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-27 20:35:22,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:35:22,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:35:22,674 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:35:22,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:35:22,681 INFO L82 PathProgramCache]: Analyzing trace with hash 636154150, now seen corresponding path program 1 times [2020-10-27 20:35:22,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:35:22,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129864389] [2020-10-27 20:35:22,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:35:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:22,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:23,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:23,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:35:23,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 20:35:23,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:35:23,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-27 20:35:23,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:35:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:35:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:35:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:35:23,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 20:35:23,531 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-10-27 20:35:23,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:35:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:23,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:23,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:35:23,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:35:23,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:35:23,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 20:35:23,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:35:23,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:35:23,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:35:23,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:35:23,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:35:23,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:35:23,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129864389] [2020-10-27 20:35:23,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:35:23,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 20:35:23,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191419722] [2020-10-27 20:35:23,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 20:35:23,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:35:23,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 20:35:23,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 20:35:23,631 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-10-27 20:35:23,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:35:23,969 INFO L93 Difference]: Finished difference Result 132 states and 197 transitions. [2020-10-27 20:35:23,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 20:35:23,972 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-27 20:35:23,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:35:23,980 INFO L225 Difference]: With dead ends: 132 [2020-10-27 20:35:23,980 INFO L226 Difference]: Without dead ends: 25 [2020-10-27 20:35:23,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 20:35:24,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-27 20:35:24,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2020-10-27 20:35:24,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-27 20:35:24,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-27 20:35:24,031 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 13 [2020-10-27 20:35:24,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:35:24,031 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-27 20:35:24,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 20:35:24,032 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-27 20:35:24,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-27 20:35:24,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:35:24,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:35:24,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:35:24,033 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:35:24,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:35:24,034 INFO L82 PathProgramCache]: Analyzing trace with hash 263975187, now seen corresponding path program 1 times [2020-10-27 20:35:24,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:35:24,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693037329] [2020-10-27 20:35:24,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:35:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:24,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:24,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:24,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:24,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:35:24,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 20:35:24,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:35:24,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-27 20:35:24,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:35:24,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:35:24,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:35:24,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:35:24,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:35:24,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:35:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:24,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:24,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:35:24,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:35:24,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:35:24,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 20:35:24,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:35:24,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:35:24,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:35:24,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:35:24,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 20:35:24,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:35:24,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693037329] [2020-10-27 20:35:24,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:35:24,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 20:35:24,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433364892] [2020-10-27 20:35:24,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:35:24,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:35:24,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:35:24,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:35:24,664 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 7 states. [2020-10-27 20:35:25,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:35:25,136 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-10-27 20:35:25,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 20:35:25,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-27 20:35:25,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:35:25,138 INFO L225 Difference]: With dead ends: 39 [2020-10-27 20:35:25,139 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 20:35:25,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:35:25,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 20:35:25,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2020-10-27 20:35:25,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-27 20:35:25,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-27 20:35:25,150 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 13 [2020-10-27 20:35:25,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:35:25,151 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-27 20:35:25,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:35:25,151 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-27 20:35:25,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-27 20:35:25,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:35:25,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:35:25,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:35:25,152 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:35:25,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:35:25,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1988851656, now seen corresponding path program 1 times [2020-10-27 20:35:25,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:35:25,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339420293] [2020-10-27 20:35:25,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:35:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:25,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:25,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:25,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:25,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:25,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:25,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:35:25,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 20:35:25,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:35:25,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 775 [2020-10-27 20:35:25,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:35:25,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:35:25,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:35:25,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 20:35:25,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:35:26,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:35:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:26,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:26,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:35:26,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:35:26,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:35:26,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 20:35:26,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:35:26,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:35:26,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:35:26,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:35:26,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:35:26,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:35:26,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339420293] [2020-10-27 20:35:26,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:35:26,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 20:35:26,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919269239] [2020-10-27 20:35:26,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:35:26,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:35:26,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:35:26,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:35:26,085 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 7 states. [2020-10-27 20:35:26,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:35:26,582 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2020-10-27 20:35:26,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 20:35:26,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-10-27 20:35:26,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:35:26,584 INFO L225 Difference]: With dead ends: 59 [2020-10-27 20:35:26,584 INFO L226 Difference]: Without dead ends: 56 [2020-10-27 20:35:26,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-27 20:35:26,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-27 20:35:26,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 33. [2020-10-27 20:35:26,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-27 20:35:26,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-27 20:35:26,596 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 17 [2020-10-27 20:35:26,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:35:26,596 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-27 20:35:26,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:35:26,596 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-27 20:35:26,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 20:35:26,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:35:26,597 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:35:26,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 20:35:26,598 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:35:26,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:35:26,599 INFO L82 PathProgramCache]: Analyzing trace with hash -179730908, now seen corresponding path program 1 times [2020-10-27 20:35:26,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:35:26,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289219909] [2020-10-27 20:35:26,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:35:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:26,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:26,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:26,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:26,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:26,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:26,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:27,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:27,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:28,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:35:28,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 20:35:28,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 20:35:28,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1755 [2020-10-27 20:35:28,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:35:28,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:35:28,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 20:35:28,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 20:35:28,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:35:28,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:35:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:28,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:28,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:35:28,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:35:28,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:35:28,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:35:28,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:35:28,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:35:28,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:35:28,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:35:28,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 20:35:28,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 20:35:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:28,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:28,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:35:28,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:35:28,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:35:28,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:35:28,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:35:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:35:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:35:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:35:28,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:35:28,516 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 20:35:28,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289219909] [2020-10-27 20:35:28,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:35:28,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 20:35:28,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809708802] [2020-10-27 20:35:28,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 20:35:28,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:35:28,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 20:35:28,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:35:28,520 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 8 states. [2020-10-27 20:35:29,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:35:29,055 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2020-10-27 20:35:29,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 20:35:29,056 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-27 20:35:29,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:35:29,059 INFO L225 Difference]: With dead ends: 71 [2020-10-27 20:35:29,059 INFO L226 Difference]: Without dead ends: 68 [2020-10-27 20:35:29,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:35:29,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-27 20:35:29,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 36. [2020-10-27 20:35:29,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-27 20:35:29,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-10-27 20:35:29,071 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2020-10-27 20:35:29,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:35:29,071 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-10-27 20:35:29,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 20:35:29,071 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-10-27 20:35:29,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 20:35:29,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:35:29,072 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:35:29,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 20:35:29,073 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:35:29,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:35:29,073 INFO L82 PathProgramCache]: Analyzing trace with hash 354364617, now seen corresponding path program 1 times [2020-10-27 20:35:29,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:35:29,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159600597] [2020-10-27 20:35:29,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:35:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:29,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:29,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:29,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:29,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:29,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:29,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:29,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:29,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:29,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:30,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:30,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:30,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:30,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:30,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:30,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:31,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:34,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:35:34,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 20:35:34,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 20:35:34,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 20:35:34,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:35:34,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:35:34,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 20:35:34,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 20:35:34,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:35:34,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:35:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:34,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:34,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:35:34,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:35:34,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:35:34,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:35:34,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:35:34,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:35:34,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:35:34,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:35:34,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:35:34,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 20:35:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:34,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:34,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:35:34,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:35:34,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:35:34,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:35:34,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:35:34,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:35:34,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:35:34,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:35:34,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:35:34,223 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 20:35:34,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159600597] [2020-10-27 20:35:34,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:35:34,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 20:35:34,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628267382] [2020-10-27 20:35:34,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 20:35:34,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:35:34,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 20:35:34,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:35:34,225 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 8 states. [2020-10-27 20:35:34,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:35:34,797 INFO L93 Difference]: Finished difference Result 81 states and 98 transitions. [2020-10-27 20:35:34,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 20:35:34,797 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-27 20:35:34,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:35:34,799 INFO L225 Difference]: With dead ends: 81 [2020-10-27 20:35:34,802 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 20:35:34,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-27 20:35:34,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 20:35:34,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 37. [2020-10-27 20:35:34,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-27 20:35:34,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2020-10-27 20:35:34,822 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 30 [2020-10-27 20:35:34,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:35:34,822 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2020-10-27 20:35:34,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 20:35:34,822 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2020-10-27 20:35:34,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 20:35:34,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:35:34,826 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:35:34,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 20:35:34,826 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:35:34,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:35:34,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1034422987, now seen corresponding path program 2 times [2020-10-27 20:35:34,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:35:34,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563784727] [2020-10-27 20:35:34,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:35:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:34,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:34,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:34,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:34,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:34,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:35,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:35,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:35,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:35,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:35,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:39,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:35:39,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 20:35:39,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 20:35:39,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4372 [2020-10-27 20:35:39,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:35:39,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:35:39,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 20:35:39,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 20:35:39,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:35:39,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:35:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:39,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:39,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:35:39,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:35:39,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:35:39,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:35:39,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:35:39,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:35:39,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:35:39,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:35:39,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:35:39,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 20:35:39,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:39,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:39,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:35:39,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:35:39,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:35:39,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:35:39,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:35:39,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:35:39,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:35:39,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:35:39,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:35:39,371 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 20:35:39,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563784727] [2020-10-27 20:35:39,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:35:39,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 20:35:39,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504550587] [2020-10-27 20:35:39,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 20:35:39,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:35:39,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 20:35:39,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:35:39,374 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 9 states. [2020-10-27 20:35:39,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:35:39,948 INFO L93 Difference]: Finished difference Result 87 states and 109 transitions. [2020-10-27 20:35:39,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 20:35:39,948 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-27 20:35:39,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:35:39,950 INFO L225 Difference]: With dead ends: 87 [2020-10-27 20:35:39,950 INFO L226 Difference]: Without dead ends: 84 [2020-10-27 20:35:39,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-27 20:35:39,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-27 20:35:39,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 40. [2020-10-27 20:35:39,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-27 20:35:39,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2020-10-27 20:35:39,976 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 30 [2020-10-27 20:35:39,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:35:39,979 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2020-10-27 20:35:39,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 20:35:39,979 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2020-10-27 20:35:39,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 20:35:39,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:35:39,981 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:35:39,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 20:35:39,981 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:35:39,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:35:39,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1271727600, now seen corresponding path program 2 times [2020-10-27 20:35:39,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:35:39,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36380273] [2020-10-27 20:35:39,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:35:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:40,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:40,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:40,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:40,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:40,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:40,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:40,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:40,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:40,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:40,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:40,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:41,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:41,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:41,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:42,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:43,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:44,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:44,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:44,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:44,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:45,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:35:45,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 20:35:45,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-27 20:35:45,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 20:35:45,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:35:45,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:35:45,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 20:35:45,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 20:35:45,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:35:45,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:35:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:45,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:45,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:35:45,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:35:45,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:35:45,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:35:45,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:35:45,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:35:45,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:35:45,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:35:45,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:35:45,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 20:35:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:45,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:45,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:35:45,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:35:45,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:35:45,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:35:45,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:35:45,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:35:45,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:35:45,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:35:45,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:35:45,182 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 20:35:45,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36380273] [2020-10-27 20:35:45,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:35:45,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 20:35:45,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541270134] [2020-10-27 20:35:45,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 20:35:45,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:35:45,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 20:35:45,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:35:45,184 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand 9 states. [2020-10-27 20:35:45,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:35:45,733 INFO L93 Difference]: Finished difference Result 96 states and 119 transitions. [2020-10-27 20:35:45,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 20:35:45,733 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-27 20:35:45,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:35:45,737 INFO L225 Difference]: With dead ends: 96 [2020-10-27 20:35:45,737 INFO L226 Difference]: Without dead ends: 93 [2020-10-27 20:35:45,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-27 20:35:45,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-27 20:35:45,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 41. [2020-10-27 20:35:45,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 20:35:45,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2020-10-27 20:35:45,751 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 34 [2020-10-27 20:35:45,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:35:45,751 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2020-10-27 20:35:45,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 20:35:45,752 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2020-10-27 20:35:45,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 20:35:45,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:35:45,753 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:35:45,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 20:35:45,753 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:35:45,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:35:45,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1951785970, now seen corresponding path program 3 times [2020-10-27 20:35:45,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:35:45,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738416268] [2020-10-27 20:35:45,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:35:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:45,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:45,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:45,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:45,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:46,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:46,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:46,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:46,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:47,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:47,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:47,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:50,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:35:50,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 20:35:50,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 20:35:50,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4618 [2020-10-27 20:35:50,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:35:50,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:35:50,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 20:35:50,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 20:35:50,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:35:50,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:35:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:50,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:50,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:35:50,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:35:50,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:35:50,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:35:50,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:35:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:35:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:35:50,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:35:50,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:35:50,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 20:35:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:50,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:50,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:35:50,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:35:50,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:35:50,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:35:50,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:35:50,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:35:50,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:35:50,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:35:50,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:35:50,533 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 20:35:50,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738416268] [2020-10-27 20:35:50,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:35:50,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 20:35:50,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118429788] [2020-10-27 20:35:50,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 20:35:50,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:35:50,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 20:35:50,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:35:50,536 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand 10 states. [2020-10-27 20:35:51,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:35:51,091 INFO L93 Difference]: Finished difference Result 103 states and 132 transitions. [2020-10-27 20:35:51,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 20:35:51,091 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-10-27 20:35:51,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:35:51,093 INFO L225 Difference]: With dead ends: 103 [2020-10-27 20:35:51,093 INFO L226 Difference]: Without dead ends: 100 [2020-10-27 20:35:51,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-10-27 20:35:51,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-27 20:35:51,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 44. [2020-10-27 20:35:51,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-27 20:35:51,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2020-10-27 20:35:51,104 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 34 [2020-10-27 20:35:51,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:35:51,104 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2020-10-27 20:35:51,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 20:35:51,105 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2020-10-27 20:35:51,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-27 20:35:51,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:35:51,106 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:35:51,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 20:35:51,106 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:35:51,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:35:51,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1477178263, now seen corresponding path program 3 times [2020-10-27 20:35:51,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:35:51,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403054596] [2020-10-27 20:35:51,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:35:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:51,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:51,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:51,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:51,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:51,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:51,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:51,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:51,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:52,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:52,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:52,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:52,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:53,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:53,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:53,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:53,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:53,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:54,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:54,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:54,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:54,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:54,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:54,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:55,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:56,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:35:56,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 20:35:56,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-27 20:35:56,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 20:35:56,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:35:56,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 20:35:56,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 20:35:56,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 20:35:56,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:35:56,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:35:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:56,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:56,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:35:56,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:35:56,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:35:56,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:35:56,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:35:56,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:35:56,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:35:56,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:35:56,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:35:56,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 20:35:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:56,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:56,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:35:56,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:35:56,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:35:56,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:35:56,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:35:56,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:35:56,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:35:56,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:35:56,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:35:56,328 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 20:35:56,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403054596] [2020-10-27 20:35:56,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:35:56,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 20:35:56,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918352845] [2020-10-27 20:35:56,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 20:35:56,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:35:56,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 20:35:56,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:35:56,331 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand 11 states. [2020-10-27 20:35:57,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:35:57,055 INFO L93 Difference]: Finished difference Result 119 states and 155 transitions. [2020-10-27 20:35:57,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 20:35:57,056 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-10-27 20:35:57,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:35:57,058 INFO L225 Difference]: With dead ends: 119 [2020-10-27 20:35:57,058 INFO L226 Difference]: Without dead ends: 116 [2020-10-27 20:35:57,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-10-27 20:35:57,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-27 20:35:57,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 48. [2020-10-27 20:35:57,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-27 20:35:57,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2020-10-27 20:35:57,083 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 61 transitions. Word has length 38 [2020-10-27 20:35:57,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:35:57,084 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 61 transitions. [2020-10-27 20:35:57,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 20:35:57,084 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 61 transitions. [2020-10-27 20:35:57,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 20:35:57,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:35:57,091 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:35:57,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 20:35:57,092 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:35:57,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:35:57,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1295493308, now seen corresponding path program 4 times [2020-10-27 20:35:57,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:35:57,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631502466] [2020-10-27 20:35:57,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:35:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:35:57,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:57,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:57,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:57,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:57,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:57,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:57,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:57,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:58,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:58,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:58,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:58,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:58,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:58,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:58,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:58,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:35:58,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:01,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:01,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:01,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:01,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:01,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:01,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:01,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:01,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:02,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:02,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 20:36:02,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-27 20:36:02,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 20:36:02,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:02,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:36:02,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 20:36:02,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 20:36:02,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:02,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:02,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:02,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:02,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:02,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:02,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:36:02,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:02,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:02,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:02,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:02,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:02,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 20:36:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:02,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:02,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:02,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:36:02,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:02,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:36:02,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:02,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:02,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:02,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:02,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:02,221 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-27 20:36:02,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631502466] [2020-10-27 20:36:02,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:36:02,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:36:02,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716756534] [2020-10-27 20:36:02,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:36:02,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:02,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:36:02,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:36:02,225 INFO L87 Difference]: Start difference. First operand 48 states and 61 transitions. Second operand 5 states. [2020-10-27 20:36:02,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:02,332 INFO L93 Difference]: Finished difference Result 112 states and 147 transitions. [2020-10-27 20:36:02,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:36:02,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-27 20:36:02,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:02,334 INFO L225 Difference]: With dead ends: 112 [2020-10-27 20:36:02,334 INFO L226 Difference]: Without dead ends: 71 [2020-10-27 20:36:02,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:36:02,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-27 20:36:02,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 59. [2020-10-27 20:36:02,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-27 20:36:02,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2020-10-27 20:36:02,358 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 42 [2020-10-27 20:36:02,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:36:02,358 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2020-10-27 20:36:02,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:36:02,358 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2020-10-27 20:36:02,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 20:36:02,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:02,363 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:36:02,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 20:36:02,364 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:02,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:02,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1975551678, now seen corresponding path program 5 times [2020-10-27 20:36:02,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:02,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358949983] [2020-10-27 20:36:02,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:02,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:02,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:02,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:02,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:02,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:02,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:02,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:02,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:02,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:03,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:03,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:03,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:04,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:04,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:04,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:04,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:04,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:04,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:04,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:04,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:06,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:06,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:06,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:07,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:07,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 20:36:07,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-27 20:36:07,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 20:36:07,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:07,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 20:36:07,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 20:36:07,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 20:36:07,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:07,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:07,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:07,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:07,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:07,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:07,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:36:07,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:07,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:07,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:07,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:07,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:07,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 20:36:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:07,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:07,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:07,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:36:07,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:07,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:36:07,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:07,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:07,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:07,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:07,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:07,562 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 9 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 20:36:07,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358949983] [2020-10-27 20:36:07,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:36:07,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 20:36:07,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026489273] [2020-10-27 20:36:07,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 20:36:07,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:07,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 20:36:07,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:36:07,564 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand 12 states. [2020-10-27 20:36:08,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:08,315 INFO L93 Difference]: Finished difference Result 168 states and 213 transitions. [2020-10-27 20:36:08,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 20:36:08,316 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-10-27 20:36:08,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:08,319 INFO L225 Difference]: With dead ends: 168 [2020-10-27 20:36:08,319 INFO L226 Difference]: Without dead ends: 165 [2020-10-27 20:36:08,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-10-27 20:36:08,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-27 20:36:08,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 67. [2020-10-27 20:36:08,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-27 20:36:08,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2020-10-27 20:36:08,332 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 42 [2020-10-27 20:36:08,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:36:08,333 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2020-10-27 20:36:08,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 20:36:08,333 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2020-10-27 20:36:08,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 20:36:08,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:08,334 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:36:08,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 20:36:08,334 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:08,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:08,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1290195355, now seen corresponding path program 6 times [2020-10-27 20:36:08,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:08,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964638779] [2020-10-27 20:36:08,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:08,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:08,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:08,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:08,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:08,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:08,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:08,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:08,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:08,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:08,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:08,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:09,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:09,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:10,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:10,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:10,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:10,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:10,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:10,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:12,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:12,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:13,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:13,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 20:36:13,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-27 20:36:13,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 20:36:13,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:13,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:36:13,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:36:13,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 20:36:13,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:13,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:13,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:13,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:13,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:13,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:13,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:36:13,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:13,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:13,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:13,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:13,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:13,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 20:36:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:13,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:13,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:13,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:36:13,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:13,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:36:13,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:13,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:36:13,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:13,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:36:13,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 61 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 20:36:13,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964638779] [2020-10-27 20:36:13,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:36:13,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 20:36:13,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950859408] [2020-10-27 20:36:13,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 20:36:13,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:13,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 20:36:13,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:36:13,493 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand 9 states. [2020-10-27 20:36:13,701 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-27 20:36:13,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:13,855 INFO L93 Difference]: Finished difference Result 136 states and 177 transitions. [2020-10-27 20:36:13,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 20:36:13,856 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-10-27 20:36:13,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:13,857 INFO L225 Difference]: With dead ends: 136 [2020-10-27 20:36:13,857 INFO L226 Difference]: Without dead ends: 73 [2020-10-27 20:36:13,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:36:13,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-27 20:36:13,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 68. [2020-10-27 20:36:13,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-27 20:36:13,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 86 transitions. [2020-10-27 20:36:13,869 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 86 transitions. Word has length 46 [2020-10-27 20:36:13,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:36:13,869 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 86 transitions. [2020-10-27 20:36:13,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 20:36:13,869 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 86 transitions. [2020-10-27 20:36:13,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 20:36:13,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:13,870 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:36:13,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 20:36:13,871 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:13,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:13,871 INFO L82 PathProgramCache]: Analyzing trace with hash -492384288, now seen corresponding path program 7 times [2020-10-27 20:36:13,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:13,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455671730] [2020-10-27 20:36:13,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:13,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:13,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:13,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:13,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:13,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:14,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:14,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:14,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:14,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:14,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:14,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:14,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:15,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:15,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:15,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:15,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:16,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:16,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:16,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:16,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:16,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:16,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:18,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:18,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:18,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:18,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 20:36:18,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-27 20:36:18,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 20:36:18,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:18,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:36:18,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 20:36:18,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 20:36:18,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:19,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:19,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:19,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:19,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:19,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:19,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:36:19,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:19,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:19,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:19,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:36:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:19,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:19,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:19,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:36:19,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:19,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 20:36:19,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:19,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:19,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:19,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:19,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 56 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 20:36:19,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455671730] [2020-10-27 20:36:19,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:36:19,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 20:36:19,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792350876] [2020-10-27 20:36:19,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 20:36:19,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:19,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 20:36:19,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:36:19,061 INFO L87 Difference]: Start difference. First operand 68 states and 86 transitions. Second operand 10 states. [2020-10-27 20:36:19,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:19,715 INFO L93 Difference]: Finished difference Result 140 states and 176 transitions. [2020-10-27 20:36:19,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 20:36:19,716 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-10-27 20:36:19,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:19,718 INFO L225 Difference]: With dead ends: 140 [2020-10-27 20:36:19,719 INFO L226 Difference]: Without dead ends: 137 [2020-10-27 20:36:19,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-27 20:36:19,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-27 20:36:19,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 64. [2020-10-27 20:36:19,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-27 20:36:19,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2020-10-27 20:36:19,731 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 50 [2020-10-27 20:36:19,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:36:19,732 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2020-10-27 20:36:19,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 20:36:19,732 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2020-10-27 20:36:19,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 20:36:19,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:19,733 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:36:19,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 20:36:19,733 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:19,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:19,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1493926176, now seen corresponding path program 8 times [2020-10-27 20:36:19,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:19,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206085097] [2020-10-27 20:36:19,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:19,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:19,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:19,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:19,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:19,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:19,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:19,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:19,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:20,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:20,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:20,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:20,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:21,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:21,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:21,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:21,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:22,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:22,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:22,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:22,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:22,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:22,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:22,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:23,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:23,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:23,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:23,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:23,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:23,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:23,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:23,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:23,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:24,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:24,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:24,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:24,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:24,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 20:36:24,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 35 [2020-10-27 20:36:24,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 20:36:24,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 20:36:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 20:36:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 20:36:24,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:24,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:24,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:24,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:24,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:24,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:24,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:36:24,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:24,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:24,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:24,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:24,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:24,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:36:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:24,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:24,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:24,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:36:24,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:24,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:36:24,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:24,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:24,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:24,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:24,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:24,903 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 20:36:24,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206085097] [2020-10-27 20:36:24,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:36:24,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 20:36:24,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891092441] [2020-10-27 20:36:24,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 20:36:24,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:24,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 20:36:24,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:36:24,906 INFO L87 Difference]: Start difference. First operand 64 states and 81 transitions. Second operand 11 states. [2020-10-27 20:36:25,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:25,567 INFO L93 Difference]: Finished difference Result 148 states and 187 transitions. [2020-10-27 20:36:25,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 20:36:25,568 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2020-10-27 20:36:25,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:25,570 INFO L225 Difference]: With dead ends: 148 [2020-10-27 20:36:25,570 INFO L226 Difference]: Without dead ends: 145 [2020-10-27 20:36:25,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-10-27 20:36:25,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-27 20:36:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 61. [2020-10-27 20:36:25,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-27 20:36:25,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2020-10-27 20:36:25,591 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 50 [2020-10-27 20:36:25,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:36:25,592 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2020-10-27 20:36:25,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 20:36:25,592 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2020-10-27 20:36:25,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 20:36:25,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:25,592 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:36:25,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 20:36:25,593 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:25,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:25,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1534176736, now seen corresponding path program 9 times [2020-10-27 20:36:25,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:25,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446305564] [2020-10-27 20:36:25,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:25,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:25,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:25,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:25,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:25,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:25,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:25,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:25,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:26,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:26,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:27,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:27,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:27,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:27,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:27,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:27,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:28,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:28,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:28,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:28,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:28,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:28,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:28,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:28,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:29,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:29,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:29,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:29,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:29,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:29,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:29,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:30,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:30,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 20:36:30,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 31 [2020-10-27 20:36:30,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 20:36:30,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:30,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 20:36:30,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 20:36:30,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 20:36:30,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:30,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:30,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:30,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:30,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:30,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:30,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:36:30,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:30,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:30,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:30,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:36:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:30,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:30,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:30,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:36:30,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:30,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:36:30,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:30,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:30,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:30,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:30,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 66 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 20:36:30,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446305564] [2020-10-27 20:36:30,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:36:30,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 20:36:30,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588488200] [2020-10-27 20:36:30,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 20:36:30,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:30,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 20:36:30,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:36:30,815 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand 12 states. [2020-10-27 20:36:31,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:31,641 INFO L93 Difference]: Finished difference Result 164 states and 207 transitions. [2020-10-27 20:36:31,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 20:36:31,642 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-10-27 20:36:31,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:31,645 INFO L225 Difference]: With dead ends: 164 [2020-10-27 20:36:31,645 INFO L226 Difference]: Without dead ends: 161 [2020-10-27 20:36:31,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2020-10-27 20:36:31,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-27 20:36:31,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 62. [2020-10-27 20:36:31,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 20:36:31,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2020-10-27 20:36:31,658 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 50 [2020-10-27 20:36:31,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:36:31,659 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2020-10-27 20:36:31,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 20:36:31,659 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2020-10-27 20:36:31,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 20:36:31,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:31,660 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:36:31,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 20:36:31,660 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:31,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:31,661 INFO L82 PathProgramCache]: Analyzing trace with hash -2080732190, now seen corresponding path program 10 times [2020-10-27 20:36:31,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:31,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293948448] [2020-10-27 20:36:31,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:31,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:31,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:31,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:31,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:31,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:31,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:31,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:31,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:32,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:32,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:33,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:33,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:33,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:34,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:34,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:34,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:34,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:35,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:36,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:36,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 20:36:36,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 20:36:36,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 20:36:36,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:36,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 20:36:36,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 20:36:36,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 20:36:36,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:36,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:36,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:36,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:36,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:36,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:36,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:36:36,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:36,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:36,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:36,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:36,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:36,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:36:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:36,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:36,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:36,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:36:36,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:36,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:36:36,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:36,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:36,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:36,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:36,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:36,864 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 66 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 20:36:36,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293948448] [2020-10-27 20:36:36,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:36:36,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 20:36:36,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977512202] [2020-10-27 20:36:36,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 20:36:36,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:36,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 20:36:36,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-27 20:36:36,871 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand 13 states. [2020-10-27 20:36:37,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:37,654 INFO L93 Difference]: Finished difference Result 174 states and 220 transitions. [2020-10-27 20:36:37,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 20:36:37,656 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2020-10-27 20:36:37,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:37,658 INFO L225 Difference]: With dead ends: 174 [2020-10-27 20:36:37,658 INFO L226 Difference]: Without dead ends: 171 [2020-10-27 20:36:37,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2020-10-27 20:36:37,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-27 20:36:37,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 65. [2020-10-27 20:36:37,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-27 20:36:37,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 83 transitions. [2020-10-27 20:36:37,674 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 83 transitions. Word has length 50 [2020-10-27 20:36:37,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:36:37,675 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 83 transitions. [2020-10-27 20:36:37,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 20:36:37,676 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 83 transitions. [2020-10-27 20:36:37,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 20:36:37,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:37,676 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:36:37,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 20:36:37,677 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:37,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:37,678 INFO L82 PathProgramCache]: Analyzing trace with hash 876290951, now seen corresponding path program 11 times [2020-10-27 20:36:37,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:37,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681119183] [2020-10-27 20:36:37,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:37,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:37,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:37,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:37,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:37,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:37,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:38,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:38,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:38,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:38,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:38,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:38,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:38,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:38,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:38,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:39,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:39,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:41,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:41,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:41,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:41,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:41,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:41,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:41,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:41,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:42,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:42,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 20:36:42,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-27 20:36:42,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 20:36:42,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:42,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:36:42,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 20:36:42,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 20:36:42,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:42,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:42,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:42,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:42,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:42,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:42,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:36:42,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:42,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:42,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:36:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:42,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:42,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:42,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:36:42,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:42,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:36:42,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:42,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:36:42,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:42,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:36:42,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:42,803 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-27 20:36:42,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681119183] [2020-10-27 20:36:42,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:36:42,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 20:36:42,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875640515] [2020-10-27 20:36:42,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:36:42,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:42,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:36:42,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:36:42,805 INFO L87 Difference]: Start difference. First operand 65 states and 83 transitions. Second operand 7 states. [2020-10-27 20:36:42,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:42,954 INFO L93 Difference]: Finished difference Result 135 states and 173 transitions. [2020-10-27 20:36:42,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 20:36:42,954 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-10-27 20:36:42,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:42,956 INFO L225 Difference]: With dead ends: 135 [2020-10-27 20:36:42,956 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 20:36:42,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:36:42,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 20:36:42,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2020-10-27 20:36:42,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-27 20:36:42,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2020-10-27 20:36:42,976 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 54 [2020-10-27 20:36:42,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:36:42,976 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2020-10-27 20:36:42,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:36:42,976 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2020-10-27 20:36:42,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 20:36:42,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:42,977 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:36:42,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 20:36:42,977 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:42,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:42,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1490403643, now seen corresponding path program 12 times [2020-10-27 20:36:42,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:42,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354607877] [2020-10-27 20:36:42,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:42,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:43,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:43,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:43,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:43,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:43,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:43,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:43,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:43,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:43,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:44,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:44,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:44,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:44,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:44,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:44,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:44,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:47,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:47,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:47,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 20:36:47,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 20:36:47,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 20:36:47,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:47,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 20:36:47,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:36:47,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 20:36:47,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:48,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:48,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:48,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:48,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:48,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:48,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:36:48,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:48,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:48,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:48,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:48,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:48,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:36:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:48,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:48,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:48,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:36:48,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:48,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:36:48,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:48,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:36:48,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:48,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:36:48,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:48,179 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 101 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 20:36:48,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354607877] [2020-10-27 20:36:48,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:36:48,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 20:36:48,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494155443] [2020-10-27 20:36:48,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 20:36:48,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:48,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 20:36:48,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:36:48,182 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand 12 states. [2020-10-27 20:36:48,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:48,425 INFO L93 Difference]: Finished difference Result 159 states and 201 transitions. [2020-10-27 20:36:48,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 20:36:48,426 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-10-27 20:36:48,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:48,427 INFO L225 Difference]: With dead ends: 159 [2020-10-27 20:36:48,427 INFO L226 Difference]: Without dead ends: 87 [2020-10-27 20:36:48,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-27 20:36:48,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-27 20:36:48,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2020-10-27 20:36:48,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 20:36:48,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2020-10-27 20:36:48,440 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 95 transitions. Word has length 54 [2020-10-27 20:36:48,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:36:48,440 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 95 transitions. [2020-10-27 20:36:48,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 20:36:48,440 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 95 transitions. [2020-10-27 20:36:48,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 20:36:48,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:48,441 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:36:48,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 20:36:48,441 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:48,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:48,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1080571200, now seen corresponding path program 13 times [2020-10-27 20:36:48,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:48,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080717098] [2020-10-27 20:36:48,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:48,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:48,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:48,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:48,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:48,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:48,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:48,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:49,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:50,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:52,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:52,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:52,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:52,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:52,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:53,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:53,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:53,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:53,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 20:36:53,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 20:36:53,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 20:36:53,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:53,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 20:36:53,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:36:53,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 20:36:53,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:53,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:53,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:53,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:53,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:53,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:53,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:36:53,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:53,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:53,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:53,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:53,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:53,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 20:36:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:53,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:53,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:53,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:36:53,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:53,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:36:53,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:53,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:36:53,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:53,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:36:53,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 107 proven. 36 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 20:36:53,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080717098] [2020-10-27 20:36:53,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:36:53,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 20:36:53,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737056500] [2020-10-27 20:36:53,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 20:36:53,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:53,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 20:36:53,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:36:53,612 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand 11 states. [2020-10-27 20:36:53,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:53,949 INFO L93 Difference]: Finished difference Result 181 states and 225 transitions. [2020-10-27 20:36:53,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 20:36:53,950 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-10-27 20:36:53,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:53,951 INFO L225 Difference]: With dead ends: 181 [2020-10-27 20:36:53,951 INFO L226 Difference]: Without dead ends: 98 [2020-10-27 20:36:53,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-27 20:36:53,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-27 20:36:53,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 84. [2020-10-27 20:36:53,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 20:36:53,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 103 transitions. [2020-10-27 20:36:53,966 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 103 transitions. Word has length 58 [2020-10-27 20:36:53,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:36:53,966 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 103 transitions. [2020-10-27 20:36:53,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 20:36:53,966 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 103 transitions. [2020-10-27 20:36:53,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 20:36:53,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:36:53,967 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 8, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:36:53,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 20:36:53,968 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:36:53,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:36:53,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1741931129, now seen corresponding path program 14 times [2020-10-27 20:36:53,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:36:53,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181171321] [2020-10-27 20:36:53,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:36:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:53,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:54,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:54,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:54,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:54,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:54,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:54,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:54,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:55,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:55,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:55,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:55,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:55,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:55,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:55,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:55,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:55,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:55,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:55,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:55,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:56,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:57,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:57,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:57,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:58,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:58,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 20:36:58,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-27 20:36:58,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 20:36:58,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:58,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 20:36:58,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 20:36:58,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 20:36:58,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:59,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:36:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:59,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:59,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:59,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:36:59,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:59,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:36:59,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:59,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:59,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:59,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:59,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:59,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 20:36:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:36:59,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:36:59,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:36:59,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:36:59,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:36:59,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:36:59,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:36:59,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:36:59,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:36:59,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:36:59,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:36:59,178 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 98 proven. 91 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-27 20:36:59,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181171321] [2020-10-27 20:36:59,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:36:59,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 20:36:59,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614799412] [2020-10-27 20:36:59,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 20:36:59,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:36:59,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 20:36:59,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-27 20:36:59,182 INFO L87 Difference]: Start difference. First operand 84 states and 103 transitions. Second operand 13 states. [2020-10-27 20:36:59,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:36:59,981 INFO L93 Difference]: Finished difference Result 190 states and 232 transitions. [2020-10-27 20:36:59,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 20:36:59,982 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2020-10-27 20:36:59,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:36:59,984 INFO L225 Difference]: With dead ends: 190 [2020-10-27 20:36:59,984 INFO L226 Difference]: Without dead ends: 186 [2020-10-27 20:36:59,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2020-10-27 20:36:59,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-27 20:36:59,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 85. [2020-10-27 20:36:59,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-27 20:36:59,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 105 transitions. [2020-10-27 20:37:00,000 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 105 transitions. Word has length 62 [2020-10-27 20:37:00,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:37:00,000 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 105 transitions. [2020-10-27 20:37:00,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 20:37:00,000 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 105 transitions. [2020-10-27 20:37:00,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 20:37:00,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:37:00,001 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:37:00,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 20:37:00,002 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:37:00,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:37:00,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1872977797, now seen corresponding path program 15 times [2020-10-27 20:37:00,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:37:00,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572433587] [2020-10-27 20:37:00,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:37:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:00,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:00,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:00,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:00,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:00,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:00,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:00,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:00,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:01,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:01,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:01,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:01,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:01,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:02,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:05,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:05,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 20:37:05,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 20:37:05,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 20:37:05,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:05,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 20:37:05,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:37:05,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 20:37:05,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:05,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:37:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:05,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:05,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:05,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:37:05,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:05,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:37:05,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:05,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:37:05,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:05,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:37:05,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:05,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 20:37:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:05,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:05,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:05,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:37:05,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:05,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:37:05,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:05,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:37:05,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:05,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:37:05,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 108 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:37:05,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572433587] [2020-10-27 20:37:05,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:37:05,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 20:37:05,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443978588] [2020-10-27 20:37:05,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 20:37:05,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:37:05,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 20:37:05,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-27 20:37:05,243 INFO L87 Difference]: Start difference. First operand 85 states and 105 transitions. Second operand 15 states. [2020-10-27 20:37:05,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:37:05,626 INFO L93 Difference]: Finished difference Result 203 states and 249 transitions. [2020-10-27 20:37:05,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 20:37:05,627 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 62 [2020-10-27 20:37:05,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:37:05,628 INFO L225 Difference]: With dead ends: 203 [2020-10-27 20:37:05,628 INFO L226 Difference]: Without dead ends: 107 [2020-10-27 20:37:05,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-27 20:37:05,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-27 20:37:05,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 93. [2020-10-27 20:37:05,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-27 20:37:05,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 113 transitions. [2020-10-27 20:37:05,643 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 113 transitions. Word has length 62 [2020-10-27 20:37:05,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:37:05,644 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 113 transitions. [2020-10-27 20:37:05,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 20:37:05,644 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 113 transitions. [2020-10-27 20:37:05,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 20:37:05,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:37:05,645 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:37:05,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 20:37:05,645 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:37:05,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:37:05,646 INFO L82 PathProgramCache]: Analyzing trace with hash -799217356, now seen corresponding path program 16 times [2020-10-27 20:37:05,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:37:05,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244282092] [2020-10-27 20:37:05,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:37:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:05,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:05,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:05,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:05,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:05,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:06,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:06,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:07,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:07,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:08,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:08,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:10,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:10,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 20:37:10,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 20:37:10,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 20:37:10,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:10,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 20:37:10,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:37:10,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 20:37:10,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:10,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:37:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:10,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:10,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:10,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:37:10,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:10,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:37:10,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:10,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:37:10,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:10,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:37:10,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:10,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 20:37:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:10,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:10,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:10,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:37:10,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:10,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:37:10,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:10,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:37:10,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:10,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:37:10,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:10,869 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 134 proven. 101 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 20:37:10,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244282092] [2020-10-27 20:37:10,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:37:10,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 20:37:10,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320789953] [2020-10-27 20:37:10,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 20:37:10,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:37:10,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 20:37:10,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:37:10,872 INFO L87 Difference]: Start difference. First operand 93 states and 113 transitions. Second operand 14 states. [2020-10-27 20:37:11,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:37:11,341 INFO L93 Difference]: Finished difference Result 223 states and 269 transitions. [2020-10-27 20:37:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 20:37:11,345 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2020-10-27 20:37:11,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:37:11,346 INFO L225 Difference]: With dead ends: 223 [2020-10-27 20:37:11,346 INFO L226 Difference]: Without dead ends: 115 [2020-10-27 20:37:11,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-10-27 20:37:11,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-27 20:37:11,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 101. [2020-10-27 20:37:11,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-27 20:37:11,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 121 transitions. [2020-10-27 20:37:11,364 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 121 transitions. Word has length 66 [2020-10-27 20:37:11,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:37:11,364 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 121 transitions. [2020-10-27 20:37:11,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 20:37:11,364 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 121 transitions. [2020-10-27 20:37:11,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 20:37:11,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:37:11,365 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:37:11,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 20:37:11,365 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:37:11,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:37:11,366 INFO L82 PathProgramCache]: Analyzing trace with hash 287845741, now seen corresponding path program 17 times [2020-10-27 20:37:11,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:37:11,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085257090] [2020-10-27 20:37:11,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:37:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:11,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:11,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:11,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:11,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:11,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:12,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:12,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:12,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:12,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:12,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:12,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:15,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:16,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:16,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 20:37:16,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 20:37:16,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 20:37:16,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:16,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 20:37:16,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:37:16,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 20:37:16,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:16,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:37:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:16,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:16,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:16,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:37:16,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:16,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:37:16,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:16,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:37:16,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:16,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:37:16,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:16,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 20:37:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:16,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:16,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:16,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:37:16,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:16,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:37:16,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:16,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:37:16,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:16,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:37:16,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:16,607 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 133 proven. 156 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 20:37:16,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085257090] [2020-10-27 20:37:16,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:37:16,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 20:37:16,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926092723] [2020-10-27 20:37:16,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 20:37:16,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:37:16,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 20:37:16,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-27 20:37:16,611 INFO L87 Difference]: Start difference. First operand 101 states and 121 transitions. Second operand 16 states. [2020-10-27 20:37:17,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:37:17,084 INFO L93 Difference]: Finished difference Result 243 states and 289 transitions. [2020-10-27 20:37:17,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 20:37:17,084 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2020-10-27 20:37:17,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:37:17,085 INFO L225 Difference]: With dead ends: 243 [2020-10-27 20:37:17,086 INFO L226 Difference]: Without dead ends: 123 [2020-10-27 20:37:17,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2020-10-27 20:37:17,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-27 20:37:17,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 109. [2020-10-27 20:37:17,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-27 20:37:17,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 129 transitions. [2020-10-27 20:37:17,104 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 129 transitions. Word has length 70 [2020-10-27 20:37:17,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:37:17,105 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 129 transitions. [2020-10-27 20:37:17,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 20:37:17,105 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 129 transitions. [2020-10-27 20:37:17,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 20:37:17,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:37:17,106 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:37:17,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 20:37:17,106 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:37:17,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:37:17,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1244353242, now seen corresponding path program 18 times [2020-10-27 20:37:17,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:37:17,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149697542] [2020-10-27 20:37:17,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:37:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:17,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:17,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:17,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:17,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:17,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:18,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:18,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:18,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:18,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:20,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:20,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:20,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:20,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:20,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:20,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:20,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:21,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:21,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:21,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:21,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:21,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:22,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:22,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 20:37:22,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-27 20:37:22,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 20:37:22,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:22,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 20:37:22,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 20:37:22,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 20:37:22,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:22,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:37:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:22,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:22,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:22,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:37:22,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:22,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:37:22,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:22,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:37:22,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:22,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:37:22,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:22,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 20:37:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:22,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:22,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:22,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:37:22,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:22,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:37:22,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:37:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:22,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:37:22,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:22,704 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 30 proven. 305 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 20:37:22,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149697542] [2020-10-27 20:37:22,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:37:22,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 20:37:22,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187304888] [2020-10-27 20:37:22,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 20:37:22,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:37:22,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 20:37:22,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-10-27 20:37:22,706 INFO L87 Difference]: Start difference. First operand 109 states and 129 transitions. Second operand 21 states. [2020-10-27 20:37:27,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:37:27,654 INFO L93 Difference]: Finished difference Result 505 states and 587 transitions. [2020-10-27 20:37:27,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-27 20:37:27,656 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 74 [2020-10-27 20:37:27,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:37:27,658 INFO L225 Difference]: With dead ends: 505 [2020-10-27 20:37:27,658 INFO L226 Difference]: Without dead ends: 395 [2020-10-27 20:37:27,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=747, Invalid=4509, Unknown=0, NotChecked=0, Total=5256 [2020-10-27 20:37:27,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-10-27 20:37:27,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 296. [2020-10-27 20:37:27,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-10-27 20:37:27,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 338 transitions. [2020-10-27 20:37:27,734 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 338 transitions. Word has length 74 [2020-10-27 20:37:27,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:37:27,734 INFO L481 AbstractCegarLoop]: Abstraction has 296 states and 338 transitions. [2020-10-27 20:37:27,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 20:37:27,734 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 338 transitions. [2020-10-27 20:37:27,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 20:37:27,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:37:27,737 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 15, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:37:27,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 20:37:27,739 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:37:27,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:37:27,740 INFO L82 PathProgramCache]: Analyzing trace with hash 105221056, now seen corresponding path program 19 times [2020-10-27 20:37:27,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:37:27,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044036905] [2020-10-27 20:37:27,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:37:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:27,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:27,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:27,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:27,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:28,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:28,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:28,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:28,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:28,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:28,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:28,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:28,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:30,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:30,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:30,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:30,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:30,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:31,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:31,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:31,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:32,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:32,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:32,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:32,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:32,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:32,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 20:37:32,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-27 20:37:32,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 20:37:32,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 20:37:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:37:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 20:37:32,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:32,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:37:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:32,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:32,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:32,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:37:32,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:32,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:37:32,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:37:32,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:32,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:37:32,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:32,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 20:37:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:37:32,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:37:32,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:37:32,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:37:32,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:37:32,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:37:32,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:37:32,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:37:32,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:37:32,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:37:32,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:37:32,981 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 3 proven. 349 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-27 20:37:32,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044036905] [2020-10-27 20:37:32,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:37:32,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 20:37:32,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657096992] [2020-10-27 20:37:32,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 20:37:32,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:37:32,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 20:37:32,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:37:32,983 INFO L87 Difference]: Start difference. First operand 296 states and 338 transitions. Second operand 14 states. [2020-10-27 20:37:33,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:37:33,566 INFO L93 Difference]: Finished difference Result 356 states and 398 transitions. [2020-10-27 20:37:33,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 20:37:33,571 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 90 [2020-10-27 20:37:33,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:37:33,572 INFO L225 Difference]: With dead ends: 356 [2020-10-27 20:37:33,572 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 20:37:33,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-10-27 20:37:33,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 20:37:33,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 20:37:33,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 20:37:33,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 20:37:33,574 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 90 [2020-10-27 20:37:33,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:37:33,574 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 20:37:33,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 20:37:33,574 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 20:37:33,574 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 20:37:33,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 20:37:33,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 20:37:33,819 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 131 [2020-10-27 20:37:35,722 WARN L193 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 288 DAG size of output: 225 [2020-10-27 20:37:38,089 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 477 DAG size of output: 329 [2020-10-27 20:37:38,196 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 61 [2020-10-27 20:37:39,107 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 30 [2020-10-27 20:37:39,331 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 3 [2020-10-27 20:37:40,440 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 202 DAG size of output: 23 [2020-10-27 20:37:42,369 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 312 DAG size of output: 9 [2020-10-27 20:37:42,614 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 1 [2020-10-27 20:37:42,663 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-27 20:37:42,663 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-27 20:37:42,663 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-27 20:37:42,663 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-27 20:37:42,663 INFO L274 CegarLoopResult]: For program point L118-2(lines 118 136) no Hoare annotation was computed. [2020-10-27 20:37:42,664 INFO L277 CegarLoopResult]: At program point L118-3(lines 118 136) the Hoare annotation is: true [2020-10-27 20:37:42,664 INFO L274 CegarLoopResult]: For program point L118-4(lines 118 136) no Hoare annotation was computed. [2020-10-27 20:37:42,664 INFO L277 CegarLoopResult]: At program point L120(line 120) the Hoare annotation is: true [2020-10-27 20:37:42,664 INFO L274 CegarLoopResult]: For program point L120-1(line 120) no Hoare annotation was computed. [2020-10-27 20:37:42,664 INFO L274 CegarLoopResult]: For program point ludcmpEXIT(lines 111 155) no Hoare annotation was computed. [2020-10-27 20:37:42,664 INFO L270 CegarLoopResult]: At program point ludcmpENTRY(lines 111 155) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-27 20:37:42,664 INFO L274 CegarLoopResult]: For program point L129-2(lines 129 135) no Hoare annotation was computed. [2020-10-27 20:37:42,664 INFO L277 CegarLoopResult]: At program point L129-3(lines 129 135) the Hoare annotation is: true [2020-10-27 20:37:42,665 INFO L274 CegarLoopResult]: For program point L121-2(lines 121 128) no Hoare annotation was computed. [2020-10-27 20:37:42,665 INFO L277 CegarLoopResult]: At program point L121-3(lines 121 128) the Hoare annotation is: true [2020-10-27 20:37:42,665 INFO L274 CegarLoopResult]: For program point L121-4(lines 121 128) no Hoare annotation was computed. [2020-10-27 20:37:42,665 INFO L274 CegarLoopResult]: For program point L146-2(lines 146 152) no Hoare annotation was computed. [2020-10-27 20:37:42,665 INFO L277 CegarLoopResult]: At program point L146-3(lines 146 152) the Hoare annotation is: true [2020-10-27 20:37:42,665 INFO L274 CegarLoopResult]: For program point L146-4(lines 146 152) no Hoare annotation was computed. [2020-10-27 20:37:42,665 INFO L274 CegarLoopResult]: For program point ludcmpFINAL(lines 111 155) no Hoare annotation was computed. [2020-10-27 20:37:42,665 INFO L274 CegarLoopResult]: For program point L138-2(lines 138 144) no Hoare annotation was computed. [2020-10-27 20:37:42,666 INFO L277 CegarLoopResult]: At program point L138-3(lines 138 144) the Hoare annotation is: true [2020-10-27 20:37:42,666 INFO L274 CegarLoopResult]: For program point L138-4(lines 138 144) no Hoare annotation was computed. [2020-10-27 20:37:42,666 INFO L274 CegarLoopResult]: For program point L132-2(lines 132 133) no Hoare annotation was computed. [2020-10-27 20:37:42,666 INFO L277 CegarLoopResult]: At program point L132-3(lines 132 133) the Hoare annotation is: true [2020-10-27 20:37:42,666 INFO L274 CegarLoopResult]: For program point L132-4(lines 132 133) no Hoare annotation was computed. [2020-10-27 20:37:42,666 INFO L274 CegarLoopResult]: For program point L124(lines 124 126) no Hoare annotation was computed. [2020-10-27 20:37:42,666 INFO L274 CegarLoopResult]: For program point L124-1(lines 124 126) no Hoare annotation was computed. [2020-10-27 20:37:42,666 INFO L274 CegarLoopResult]: For program point L149-2(lines 149 150) no Hoare annotation was computed. [2020-10-27 20:37:42,666 INFO L277 CegarLoopResult]: At program point L149-3(lines 149 150) the Hoare annotation is: true [2020-10-27 20:37:42,666 INFO L274 CegarLoopResult]: For program point L149-4(lines 149 150) no Hoare annotation was computed. [2020-10-27 20:37:42,666 INFO L274 CegarLoopResult]: For program point L141-2(lines 141 142) no Hoare annotation was computed. [2020-10-27 20:37:42,666 INFO L277 CegarLoopResult]: At program point L141-3(lines 141 142) the Hoare annotation is: true [2020-10-27 20:37:42,667 INFO L274 CegarLoopResult]: For program point L141-4(lines 141 142) no Hoare annotation was computed. [2020-10-27 20:37:42,667 INFO L274 CegarLoopResult]: For program point L125-2(lines 125 126) no Hoare annotation was computed. [2020-10-27 20:37:42,667 INFO L277 CegarLoopResult]: At program point L125-3(lines 125 126) the Hoare annotation is: true [2020-10-27 20:37:42,667 INFO L274 CegarLoopResult]: For program point L117(line 117) no Hoare annotation was computed. [2020-10-27 20:37:42,667 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:37:42,667 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |~#x~0.base| |old(~#x~0.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |~#x~0.offset| |old(~#x~0.offset)|) (= |old(#memory_real)| |#memory_real|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-10-27 20:37:42,667 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:37:42,667 INFO L274 CegarLoopResult]: For program point L80(lines 80 81) no Hoare annotation was computed. [2020-10-27 20:37:42,668 INFO L274 CegarLoopResult]: For program point L80-2(lines 80 81) no Hoare annotation was computed. [2020-10-27 20:37:42,668 INFO L274 CegarLoopResult]: For program point fabsEXIT(lines 76 83) no Hoare annotation was computed. [2020-10-27 20:37:42,668 INFO L277 CegarLoopResult]: At program point fabsENTRY(lines 76 83) the Hoare annotation is: true [2020-10-27 20:37:42,668 INFO L274 CegarLoopResult]: For program point fabsFINAL(lines 76 83) no Hoare annotation was computed. [2020-10-27 20:37:42,668 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:37:42,668 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 20:37:42,668 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 20:37:42,668 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:37:42,668 INFO L274 CegarLoopResult]: For program point L99-2(line 99) no Hoare annotation was computed. [2020-10-27 20:37:42,668 INFO L274 CegarLoopResult]: For program point L93-2(lines 93 104) no Hoare annotation was computed. [2020-10-27 20:37:42,669 INFO L270 CegarLoopResult]: At program point L93-3(lines 93 104) the Hoare annotation is: (let ((.cse0 (<= (+ main_~n~0 1) main_~j~0))) (or (and (<= main_~j~0 main_~i~0) .cse0) (and (<= main_~n~0 (+ main_~i~0 5)) (<= main_~i~0 0) (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (<= (+ main_~i~0 4) main_~n~0) (= |old(#valid)| |#valid|)) (and (<= main_~j~0 6) .cse0))) [2020-10-27 20:37:42,669 INFO L277 CegarLoopResult]: At program point L93-4(lines 93 104) the Hoare annotation is: true [2020-10-27 20:37:42,669 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 85 109) no Hoare annotation was computed. [2020-10-27 20:37:42,669 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 85 109) no Hoare annotation was computed. [2020-10-27 20:37:42,669 INFO L274 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-10-27 20:37:42,669 INFO L274 CegarLoopResult]: For program point L102(line 102) no Hoare annotation was computed. [2020-10-27 20:37:42,669 INFO L274 CegarLoopResult]: For program point L96-2(lines 96 101) no Hoare annotation was computed. [2020-10-27 20:37:42,669 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 85 109) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-27 20:37:42,670 INFO L270 CegarLoopResult]: At program point L96-3(lines 96 101) the Hoare annotation is: (and (<= main_~j~0 6) (<= main_~i~0 5) (<= main_~n~0 5)) [2020-10-27 20:37:42,670 INFO L270 CegarLoopResult]: At program point L96-4(lines 96 101) the Hoare annotation is: (let ((.cse0 (<= (+ main_~n~0 1) main_~j~0))) (or (and (<= main_~j~0 6) (or (and .cse0 (< main_~i~0 50) (<= main_~j~0 5)) (and (<= main_~i~0 5) .cse0))) (and (<= main_~i~0 6) .cse0 (<= main_~j~0 (+ main_~i~0 1))))) [2020-10-27 20:37:42,670 INFO L274 CegarLoopResult]: For program point L99(line 99) no Hoare annotation was computed. [2020-10-27 20:37:42,670 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-10-27 20:37:42,670 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2020-10-27 20:37:42,670 INFO L270 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-27 20:37:42,670 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-27 20:37:42,670 INFO L274 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-10-27 20:37:42,670 INFO L274 CegarLoopResult]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2020-10-27 20:37:42,690 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_real [2020-10-27 20:37:42,692 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_real [2020-10-27 20:37:42,692 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-27 20:37:42,692 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-27 20:37:42,693 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_real [2020-10-27 20:37:42,693 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_real [2020-10-27 20:37:42,693 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-27 20:37:42,694 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-27 20:37:42,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:37:42 BoogieIcfgContainer [2020-10-27 20:37:42,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 20:37:42,698 INFO L168 Benchmark]: Toolchain (without parser) took 141448.36 ms. Allocated memory was 167.8 MB in the beginning and 728.8 MB in the end (delta: 561.0 MB). Free memory was 143.0 MB in the beginning and 447.5 MB in the end (delta: -304.4 MB). Peak memory consumption was 447.7 MB. Max. memory is 8.0 GB. [2020-10-27 20:37:42,698 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 125.8 MB. Free memory is still 99.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:37:42,699 INFO L168 Benchmark]: CACSL2BoogieTranslator took 472.44 ms. Allocated memory is still 167.8 MB. Free memory was 142.4 MB in the beginning and 130.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 20:37:42,699 INFO L168 Benchmark]: Boogie Preprocessor took 122.18 ms. Allocated memory is still 167.8 MB. Free memory was 130.8 MB in the beginning and 128.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 20:37:42,700 INFO L168 Benchmark]: RCFGBuilder took 721.65 ms. Allocated memory is still 167.8 MB. Free memory was 128.3 MB in the beginning and 135.9 MB in the end (delta: -7.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-27 20:37:42,701 INFO L168 Benchmark]: TraceAbstraction took 140117.00 ms. Allocated memory was 167.8 MB in the beginning and 728.8 MB in the end (delta: 561.0 MB). Free memory was 135.3 MB in the beginning and 447.5 MB in the end (delta: -312.1 MB). Peak memory consumption was 439.3 MB. Max. memory is 8.0 GB. [2020-10-27 20:37:42,703 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 125.8 MB. Free memory is still 99.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 472.44 ms. Allocated memory is still 167.8 MB. Free memory was 142.4 MB in the beginning and 130.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 122.18 ms. Allocated memory is still 167.8 MB. Free memory was 130.8 MB in the beginning and 128.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 721.65 ms. Allocated memory is still 167.8 MB. Free memory was 128.3 MB in the beginning and 135.9 MB in the end (delta: -7.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 140117.00 ms. Allocated memory was 167.8 MB in the beginning and 728.8 MB in the end (delta: 561.0 MB). Free memory was 135.3 MB in the beginning and 447.5 MB in the end (delta: -312.1 MB). Peak memory consumption was 439.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_real - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_real - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_real - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_real - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 132]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 138]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 118]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 96]: Loop Invariant Derived loop invariant: (j <= 6 && i <= 5) && n <= 5 - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 146]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 141]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 93]: Loop Invariant [2020-10-27 20:37:42,710 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_real [2020-10-27 20:37:42,710 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_real [2020-10-27 20:37:42,711 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-27 20:37:42,711 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-27 20:37:42,711 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_real [2020-10-27 20:37:42,711 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_real [2020-10-27 20:37:42,711 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-27 20:37:42,712 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: ((j <= i && n + 1 <= j) || (((((n <= i + 5 && i <= 0) && \old(unknown-#memory_real-unknown) == unknown-#memory_real-unknown) && \old(unknown-#length-unknown) == unknown-#length-unknown) && i + 4 <= n) && \old(\valid) == \valid)) || (j <= 6 && n + 1 <= j) - InvariantResult [Line: 121]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 130.9s, OverallIterations: 25, TraceHistogramMax: 17, AutomataDifference: 17.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 9.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 489 SDtfs, 1531 SDslu, 1637 SDs, 0 SdLazy, 4657 SolverSat, 802 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 616 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 431 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2268 ImplicationChecksByTransitivity, 12.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=296occurred in iteration=24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 25 MinimizatonAttempts, 1079 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 23 LocationsWithAnnotation, 146 PreInvPairs, 328 NumberOfFragments, 184 HoareAnnotationTreeSize, 146 FomulaSimplifications, 978515429510528 FormulaSimplificationTreeSizeReduction, 5.2s HoareSimplificationTime, 23 FomulaSimplificationsInter, 429689054 FormulaSimplificationTreeSizeReductionInter, 3.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 112.1s InterpolantComputationTime, 1155 NumberOfCodeBlocks, 1155 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 1130 ConstructedInterpolants, 0 QuantifiedInterpolants, 247610 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 4 PerfectInterpolantSequences, 1490/3025 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 correct! Received shutdown request...