/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/array-cav19/array_init_var_plus_ind3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 13:59:48,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 13:59:48,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 13:59:48,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 13:59:48,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 13:59:48,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 13:59:48,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 13:59:48,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 13:59:48,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 13:59:48,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 13:59:48,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 13:59:48,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 13:59:48,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 13:59:48,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 13:59:48,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 13:59:48,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 13:59:48,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 13:59:48,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 13:59:48,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 13:59:48,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 13:59:48,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 13:59:48,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 13:59:48,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 13:59:48,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 13:59:48,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 13:59:48,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 13:59:48,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 13:59:48,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 13:59:48,441 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 13:59:48,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 13:59:48,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 13:59:48,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 13:59:48,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 13:59:48,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 13:59:48,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 13:59:48,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 13:59:48,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 13:59:48,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 13:59:48,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 13:59:48,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 13:59:48,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 13:59:48,460 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 13:59:48,514 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 13:59:48,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 13:59:48,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 13:59:48,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 13:59:48,520 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 13:59:48,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 13:59:48,520 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 13:59:48,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 13:59:48,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 13:59:48,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 13:59:48,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 13:59:48,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 13:59:48,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 13:59:48,523 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 13:59:48,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 13:59:48,523 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 13:59:48,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 13:59:48,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 13:59:48,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 13:59:48,524 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 13:59:48,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 13:59:48,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 13:59:48,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 13:59:48,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 13:59:48,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 13:59:48,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 13:59:48,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 13:59:48,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 13:59:48,540 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 13:59:48,540 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 13:59:48,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 13:59:48,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 13:59:48,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 13:59:48,945 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 13:59:48,946 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 13:59:48,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_init_var_plus_ind3.c [2020-10-27 13:59:49,034 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adbc1e2bc/9a742a3a08eb47f9aea4ee700666a7d6/FLAG227642659 [2020-10-27 13:59:49,719 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 13:59:49,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-cav19/array_init_var_plus_ind3.c [2020-10-27 13:59:49,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adbc1e2bc/9a742a3a08eb47f9aea4ee700666a7d6/FLAG227642659 [2020-10-27 13:59:50,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adbc1e2bc/9a742a3a08eb47f9aea4ee700666a7d6 [2020-10-27 13:59:50,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 13:59:50,083 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 13:59:50,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 13:59:50,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 13:59:50,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 13:59:50,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:59:50" (1/1) ... [2020-10-27 13:59:50,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a78c7ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:50, skipping insertion in model container [2020-10-27 13:59:50,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:59:50" (1/1) ... [2020-10-27 13:59:50,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 13:59:50,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 13:59:50,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 13:59:50,302 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 13:59:50,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 13:59:50,341 INFO L208 MainTranslator]: Completed translation [2020-10-27 13:59:50,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:50 WrapperNode [2020-10-27 13:59:50,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 13:59:50,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 13:59:50,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 13:59:50,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 13:59:50,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:50" (1/1) ... [2020-10-27 13:59:50,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:50" (1/1) ... [2020-10-27 13:59:50,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:50" (1/1) ... [2020-10-27 13:59:50,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:50" (1/1) ... [2020-10-27 13:59:50,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:50" (1/1) ... [2020-10-27 13:59:50,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:50" (1/1) ... [2020-10-27 13:59:50,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:50" (1/1) ... [2020-10-27 13:59:50,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 13:59:50,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 13:59:50,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 13:59:50,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 13:59:50,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:50" (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 13:59:50,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 13:59:50,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 13:59:50,489 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 13:59:50,489 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 13:59:50,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 13:59:50,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 13:59:50,490 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 13:59:50,490 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 13:59:50,491 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 13:59:50,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 13:59:50,493 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 13:59:50,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 13:59:50,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 13:59:50,494 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 13:59:50,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 13:59:50,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 13:59:50,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 13:59:50,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 13:59:50,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 13:59:50,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 13:59:50,804 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 13:59:50,805 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 13:59:50,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:59:50 BoogieIcfgContainer [2020-10-27 13:59:50,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 13:59:50,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 13:59:50,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 13:59:50,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 13:59:50,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:59:50" (1/3) ... [2020-10-27 13:59:50,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4300057d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:59:50, skipping insertion in model container [2020-10-27 13:59:50,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:50" (2/3) ... [2020-10-27 13:59:50,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4300057d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:59:50, skipping insertion in model container [2020-10-27 13:59:50,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:59:50" (3/3) ... [2020-10-27 13:59:50,869 INFO L111 eAbstractionObserver]: Analyzing ICFG array_init_var_plus_ind3.c [2020-10-27 13:59:50,914 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 13:59:50,951 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 13:59:50,981 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 13:59:51,033 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 13:59:51,033 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 13:59:51,034 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 13:59:51,034 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 13:59:51,034 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 13:59:51,034 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 13:59:51,034 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 13:59:51,034 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 13:59:51,061 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-27 13:59:51,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-27 13:59:51,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 13:59:51,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 13:59:51,073 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 13:59:51,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 13:59:51,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1582220556, now seen corresponding path program 1 times [2020-10-27 13:59:51,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 13:59:51,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457798694] [2020-10-27 13:59:51,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 13:59:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:59:51,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:51,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:51,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:59:51,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 13:59:51,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 13:59:51,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-27 13:59:51,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 13:59:51,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 13:59:51,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 13:59:51,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 13:59:51,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 13:59:52,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 13:59:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:59:52,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:52,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:59:52,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 13:59:52,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:59:52,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 13:59:52,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 13:59:52,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:59:52,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:59:52,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:59:52,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:59:52,056 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 13:59:52,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457798694] [2020-10-27 13:59:52,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 13:59:52,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 13:59:52,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915431925] [2020-10-27 13:59:52,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 13:59:52,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 13:59:52,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 13:59:52,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 13:59:52,092 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2020-10-27 13:59:52,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 13:59:52,277 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2020-10-27 13:59:52,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 13:59:52,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-27 13:59:52,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 13:59:52,297 INFO L225 Difference]: With dead ends: 54 [2020-10-27 13:59:52,298 INFO L226 Difference]: Without dead ends: 24 [2020-10-27 13:59:52,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 13:59:52,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-27 13:59:52,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-27 13:59:52,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-27 13:59:52,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-27 13:59:52,346 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2020-10-27 13:59:52,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 13:59:52,347 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-27 13:59:52,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 13:59:52,347 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-27 13:59:52,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-27 13:59:52,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 13:59:52,348 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 13:59:52,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 13:59:52,349 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 13:59:52,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 13:59:52,350 INFO L82 PathProgramCache]: Analyzing trace with hash 996586641, now seen corresponding path program 1 times [2020-10-27 13:59:52,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 13:59:52,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820824342] [2020-10-27 13:59:52,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 13:59:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:59:52,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:52,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:52,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:59:52,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 13:59:52,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 13:59:52,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-27 13:59:52,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 13:59:52,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 13:59:52,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 13:59:52,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 13:59:52,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:59:52,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 13:59:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:59:52,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:52,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:59:52,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 13:59:52,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:59:52,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 13:59:52,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 13:59:52,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:59:52,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:59:52,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:59:52,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:59:52,795 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 13:59:52,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820824342] [2020-10-27 13:59:52,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 13:59:52,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 13:59:52,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216456624] [2020-10-27 13:59:52,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 13:59:52,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 13:59:52,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 13:59:52,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 13:59:52,799 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2020-10-27 13:59:52,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 13:59:52,905 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-10-27 13:59:52,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 13:59:52,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-27 13:59:52,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 13:59:52,907 INFO L225 Difference]: With dead ends: 40 [2020-10-27 13:59:52,907 INFO L226 Difference]: Without dead ends: 27 [2020-10-27 13:59:52,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 13:59:52,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-27 13:59:52,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-10-27 13:59:52,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-27 13:59:52,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-27 13:59:52,917 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 17 [2020-10-27 13:59:52,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 13:59:52,918 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-27 13:59:52,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 13:59:52,918 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-27 13:59:52,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 13:59:52,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 13:59:52,919 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 13:59:52,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 13:59:52,919 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 13:59:52,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 13:59:52,920 INFO L82 PathProgramCache]: Analyzing trace with hash 533781228, now seen corresponding path program 2 times [2020-10-27 13:59:52,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 13:59:52,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459178627] [2020-10-27 13:59:52,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 13:59:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:59:52,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:52,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:53,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:59:53,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 13:59:53,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 13:59:53,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-27 13:59:53,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 13:59:53,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 13:59:53,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 13:59:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 13:59:53,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:59:53,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 13:59:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:59:53,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:53,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:59:53,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 13:59:53,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:59:53,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 13:59:53,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 13:59:53,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:59:53,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:59:53,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:59:53,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:59:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 13:59:53,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459178627] [2020-10-27 13:59:53,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 13:59:53,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 13:59:53,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494933995] [2020-10-27 13:59:53,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 13:59:53,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 13:59:53,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 13:59:53,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 13:59:53,273 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 7 states. [2020-10-27 13:59:53,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 13:59:53,386 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-10-27 13:59:53,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 13:59:53,386 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-27 13:59:53,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 13:59:53,388 INFO L225 Difference]: With dead ends: 43 [2020-10-27 13:59:53,388 INFO L226 Difference]: Without dead ends: 30 [2020-10-27 13:59:53,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-27 13:59:53,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-27 13:59:53,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-27 13:59:53,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 13:59:53,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-10-27 13:59:53,397 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 20 [2020-10-27 13:59:53,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 13:59:53,397 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-10-27 13:59:53,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 13:59:53,398 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-10-27 13:59:53,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 13:59:53,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 13:59:53,399 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 13:59:53,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 13:59:53,400 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 13:59:53,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 13:59:53,400 INFO L82 PathProgramCache]: Analyzing trace with hash -57257295, now seen corresponding path program 3 times [2020-10-27 13:59:53,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 13:59:53,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192423238] [2020-10-27 13:59:53,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 13:59:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:59:53,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:53,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:53,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:59:53,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 13:59:53,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 13:59:53,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 497 [2020-10-27 13:59:53,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 13:59:53,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 13:59:53,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 13:59:53,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 13:59:53,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:59:53,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 13:59:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:59:54,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:54,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:59:54,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 13:59:54,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:59:54,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 13:59:54,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 13:59:54,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:59:54,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:59:54,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:59:54,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:59:54,013 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 13:59:54,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192423238] [2020-10-27 13:59:54,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 13:59:54,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 13:59:54,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795382475] [2020-10-27 13:59:54,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 13:59:54,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 13:59:54,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 13:59:54,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 13:59:54,017 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 8 states. [2020-10-27 13:59:54,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 13:59:54,136 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-10-27 13:59:54,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 13:59:54,137 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-10-27 13:59:54,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 13:59:54,138 INFO L225 Difference]: With dead ends: 46 [2020-10-27 13:59:54,138 INFO L226 Difference]: Without dead ends: 33 [2020-10-27 13:59:54,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 13:59:54,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-27 13:59:54,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-27 13:59:54,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-27 13:59:54,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-10-27 13:59:54,146 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 23 [2020-10-27 13:59:54,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 13:59:54,156 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-10-27 13:59:54,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 13:59:54,157 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-10-27 13:59:54,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 13:59:54,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 13:59:54,158 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 13:59:54,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 13:59:54,158 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 13:59:54,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 13:59:54,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1680017612, now seen corresponding path program 4 times [2020-10-27 13:59:54,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 13:59:54,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528209978] [2020-10-27 13:59:54,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 13:59:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:59:54,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:54,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:54,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:59:54,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 13:59:54,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 13:59:54,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-10-27 13:59:54,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 13:59:54,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 13:59:54,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 13:59:54,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 13:59:54,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:59:54,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 13:59:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:59:54,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:54,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:59:54,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 13:59:54,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:59:54,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 13:59:54,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 13:59:54,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:59:54,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:59:54,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:59:54,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:59:54,778 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 13:59:54,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528209978] [2020-10-27 13:59:54,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 13:59:54,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 13:59:54,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513352017] [2020-10-27 13:59:54,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 13:59:54,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 13:59:54,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 13:59:54,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-27 13:59:54,786 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 9 states. [2020-10-27 13:59:54,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 13:59:54,936 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-10-27 13:59:54,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 13:59:54,937 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-27 13:59:54,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 13:59:54,938 INFO L225 Difference]: With dead ends: 49 [2020-10-27 13:59:54,938 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 13:59:54,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-27 13:59:54,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 13:59:54,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-27 13:59:54,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-27 13:59:54,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-10-27 13:59:54,946 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 26 [2020-10-27 13:59:54,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 13:59:54,946 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-10-27 13:59:54,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 13:59:54,947 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-10-27 13:59:54,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 13:59:54,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 13:59:54,948 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 13:59:54,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 13:59:54,948 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 13:59:54,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 13:59:54,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1814112047, now seen corresponding path program 5 times [2020-10-27 13:59:54,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 13:59:54,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530429823] [2020-10-27 13:59:54,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 13:59:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:59:54,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:55,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:56,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:59:56,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 13:59:56,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 13:59:56,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1213 [2020-10-27 13:59:56,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 13:59:56,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 13:59:56,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 13:59:56,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 13:59:56,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:59:56,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 13:59:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:59:56,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:56,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:59:56,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 13:59:56,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:59:56,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 13:59:56,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 13:59:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:59:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:59:56,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:59:56,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:59:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 13:59:56,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530429823] [2020-10-27 13:59:56,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 13:59:56,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 13:59:56,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248300292] [2020-10-27 13:59:56,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 13:59:56,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 13:59:56,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 13:59:56,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-27 13:59:56,533 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 16 states. [2020-10-27 13:59:57,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 13:59:57,087 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2020-10-27 13:59:57,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 13:59:57,089 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2020-10-27 13:59:57,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 13:59:57,092 INFO L225 Difference]: With dead ends: 54 [2020-10-27 13:59:57,092 INFO L226 Difference]: Without dead ends: 51 [2020-10-27 13:59:57,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2020-10-27 13:59:57,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-27 13:59:57,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2020-10-27 13:59:57,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 13:59:57,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-27 13:59:57,120 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 29 [2020-10-27 13:59:57,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 13:59:57,121 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-27 13:59:57,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 13:59:57,121 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-27 13:59:57,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 13:59:57,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 13:59:57,124 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 13:59:57,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 13:59:57,124 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 13:59:57,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 13:59:57,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1691569836, now seen corresponding path program 6 times [2020-10-27 13:59:57,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 13:59:57,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760700377] [2020-10-27 13:59:57,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 13:59:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:59:57,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:57,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:58,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:59:58,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 13:59:58,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 13:59:58,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1513 [2020-10-27 13:59:58,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 13:59:58,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 13:59:58,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 13:59:58,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 13:59:58,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:59:59,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 13:59:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:59:59,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:59,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 13:59:59,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 13:59:59,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 13:59:59,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 13:59:59,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 13:59:59,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 13:59:59,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 13:59:59,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 13:59:59,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 13:59:59,082 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 13:59:59,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760700377] [2020-10-27 13:59:59,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 13:59:59,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 13:59:59,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233834526] [2020-10-27 13:59:59,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 13:59:59,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 13:59:59,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 13:59:59,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-27 13:59:59,085 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 17 states. [2020-10-27 13:59:59,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 13:59:59,676 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2020-10-27 13:59:59,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 13:59:59,677 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2020-10-27 13:59:59,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 13:59:59,678 INFO L225 Difference]: With dead ends: 70 [2020-10-27 13:59:59,679 INFO L226 Difference]: Without dead ends: 67 [2020-10-27 13:59:59,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2020-10-27 13:59:59,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-27 13:59:59,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 48. [2020-10-27 13:59:59,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-27 13:59:59,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2020-10-27 13:59:59,688 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 32 [2020-10-27 13:59:59,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 13:59:59,689 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2020-10-27 13:59:59,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 13:59:59,689 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2020-10-27 13:59:59,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 13:59:59,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 13:59:59,690 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 13:59:59,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 13:59:59,691 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 13:59:59,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 13:59:59,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1259190543, now seen corresponding path program 7 times [2020-10-27 13:59:59,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 13:59:59,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342233332] [2020-10-27 13:59:59,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 13:59:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 13:59:59,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 13:59:59,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:00,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:00,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:02,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:02,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 14:00:02,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:00:02,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2426 [2020-10-27 14:00:02,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:02,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:00:02,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:00:02,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:00:02,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:02,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:00:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:02,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:02,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:02,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:00:02,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:02,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:00:02,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:02,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:00:02,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:02,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:00:02,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:00:02,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342233332] [2020-10-27 14:00:02,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:00:02,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:00:02,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388667243] [2020-10-27 14:00:02,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:00:02,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:00:02,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:00:02,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:00:02,720 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 19 states. [2020-10-27 14:00:03,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:00:03,532 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2020-10-27 14:00:03,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 14:00:03,533 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 35 [2020-10-27 14:00:03,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:00:03,535 INFO L225 Difference]: With dead ends: 82 [2020-10-27 14:00:03,535 INFO L226 Difference]: Without dead ends: 79 [2020-10-27 14:00:03,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=120, Invalid=750, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:00:03,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-27 14:00:03,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 51. [2020-10-27 14:00:03,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-27 14:00:03,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-10-27 14:00:03,562 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 35 [2020-10-27 14:00:03,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:00:03,562 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-10-27 14:00:03,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:00:03,563 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-10-27 14:00:03,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 14:00:03,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:00:03,564 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:00:03,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:00:03,565 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:00:03,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:00:03,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1398357321, now seen corresponding path program 1 times [2020-10-27 14:00:03,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:00:03,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285229065] [2020-10-27 14:00:03,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:00:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:03,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:03,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:04,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:04,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 14:00:04,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:00:04,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 694 [2020-10-27 14:00:04,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:00:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:00:04,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 14:00:04,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:00:04,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:00:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:04,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:04,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:04,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:00:04,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:04,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:00:04,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:04,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:00:04,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:04,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:00:04,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:04,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 14:00:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:04,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:04,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:04,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:04,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:04,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:00:04,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:04,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:04,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:04,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:04,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:00:04,443 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:00:04,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285229065] [2020-10-27 14:00:04,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:00:04,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:00:04,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626998511] [2020-10-27 14:00:04,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:00:04,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:00:04,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:00:04,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:00:04,453 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 11 states. [2020-10-27 14:00:04,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:00:04,645 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2020-10-27 14:00:04,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:00:04,645 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-10-27 14:00:04,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:00:04,649 INFO L225 Difference]: With dead ends: 68 [2020-10-27 14:00:04,649 INFO L226 Difference]: Without dead ends: 51 [2020-10-27 14:00:04,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:00:04,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-27 14:00:04,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-27 14:00:04,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-27 14:00:04,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-10-27 14:00:04,667 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 37 [2020-10-27 14:00:04,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:00:04,669 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-10-27 14:00:04,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:00:04,669 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-10-27 14:00:04,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-27 14:00:04,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:00:04,673 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:00:04,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:00:04,673 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:00:04,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:00:04,674 INFO L82 PathProgramCache]: Analyzing trace with hash 2028973196, now seen corresponding path program 8 times [2020-10-27 14:00:04,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:00:04,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681946835] [2020-10-27 14:00:04,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:00:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:04,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:04,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:05,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:05,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:05,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:06,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:06,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:06,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:08,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:08,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:00:08,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 14:00:08,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3459 [2020-10-27 14:00:08,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:08,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:00:08,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:00:08,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 14:00:08,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:08,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:00:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:08,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:08,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:08,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:00:08,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:08,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:00:08,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:08,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:00:08,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:08,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:00:08,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:00:08,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681946835] [2020-10-27 14:00:08,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:00:08,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:00:08,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570766362] [2020-10-27 14:00:08,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:00:08,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:00:08,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:00:08,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:00:08,910 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 23 states. [2020-10-27 14:00:10,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:00:10,054 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2020-10-27 14:00:10,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 14:00:10,056 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 38 [2020-10-27 14:00:10,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:00:10,057 INFO L225 Difference]: With dead ends: 62 [2020-10-27 14:00:10,057 INFO L226 Difference]: Without dead ends: 59 [2020-10-27 14:00:10,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=163, Invalid=1243, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:00:10,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-27 14:00:10,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 44. [2020-10-27 14:00:10,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-27 14:00:10,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2020-10-27 14:00:10,074 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 38 [2020-10-27 14:00:10,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:00:10,075 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2020-10-27 14:00:10,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:00:10,075 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-10-27 14:00:10,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 14:00:10,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:00:10,076 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:00:10,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:00:10,078 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:00:10,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:00:10,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1726033298, now seen corresponding path program 2 times [2020-10-27 14:00:10,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:00:10,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754392648] [2020-10-27 14:00:10,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:00:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:10,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:10,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:10,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:14,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:14,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 14:00:14,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:00:14,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4069 [2020-10-27 14:00:14,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:14,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:00:14,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:00:14,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 14:00:14,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:14,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:00:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:14,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:14,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:14,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:00:14,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:14,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:00:14,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:14,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:00:14,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:14,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:00:14,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:14,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 14:00:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:14,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:14,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:14,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:14,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:14,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:00:14,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:14,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:14,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:14,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:14,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:14,604 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 2 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:00:14,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754392648] [2020-10-27 14:00:14,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:00:14,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:00:14,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007055788] [2020-10-27 14:00:14,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:00:14,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:00:14,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:00:14,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:00:14,607 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 19 states. [2020-10-27 14:00:15,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:00:15,264 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2020-10-27 14:00:15,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:00:15,265 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 40 [2020-10-27 14:00:15,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:00:15,267 INFO L225 Difference]: With dead ends: 67 [2020-10-27 14:00:15,267 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 14:00:15,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:00:15,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 14:00:15,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-10-27 14:00:15,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-27 14:00:15,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2020-10-27 14:00:15,285 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 40 [2020-10-27 14:00:15,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:00:15,286 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2020-10-27 14:00:15,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:00:15,286 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-10-27 14:00:15,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 14:00:15,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:00:15,294 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:00:15,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:00:15,294 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:00:15,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:00:15,295 INFO L82 PathProgramCache]: Analyzing trace with hash -84274985, now seen corresponding path program 3 times [2020-10-27 14:00:15,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:00:15,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882696987] [2020-10-27 14:00:15,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:00:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:15,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:15,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:15,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:17,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:20,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:20,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 14:00:20,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:00:20,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:00:20,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:20,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:00:20,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:00:20,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:00:20,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:20,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:00:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:20,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:20,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:20,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:00:20,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:20,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:00:20,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:20,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:00:20,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:20,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:00:20,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:20,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:00:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:20,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:20,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:20,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:20,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:20,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:00:20,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:20,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:20,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:20,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:20,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:20,958 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:00:20,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882696987] [2020-10-27 14:00:20,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:00:20,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:00:20,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447062733] [2020-10-27 14:00:20,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:00:20,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:00:20,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:00:20,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:00:20,962 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 21 states. [2020-10-27 14:00:21,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:00:21,836 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2020-10-27 14:00:21,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:00:21,836 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 43 [2020-10-27 14:00:21,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:00:21,838 INFO L225 Difference]: With dead ends: 87 [2020-10-27 14:00:21,838 INFO L226 Difference]: Without dead ends: 84 [2020-10-27 14:00:21,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=775, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:00:21,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-27 14:00:21,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 61. [2020-10-27 14:00:21,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-27 14:00:21,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-10-27 14:00:21,849 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 43 [2020-10-27 14:00:21,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:00:21,849 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-10-27 14:00:21,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:00:21,849 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-10-27 14:00:21,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 14:00:21,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:00:21,850 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:00:21,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:00:21,851 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:00:21,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:00:21,851 INFO L82 PathProgramCache]: Analyzing trace with hash 926002034, now seen corresponding path program 4 times [2020-10-27 14:00:21,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:00:21,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946697022] [2020-10-27 14:00:21,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:00:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:21,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:22,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:22,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:22,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:24,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:24,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:25,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:26,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:26,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 14:00:26,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:00:26,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:00:26,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:26,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:00:26,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:00:26,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 14:00:26,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:27,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:00:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:27,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:27,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:27,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:00:27,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:27,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:00:27,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:27,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:00:27,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:27,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:00:27,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:27,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 14:00:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:27,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:27,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:27,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:27,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:27,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:00:27,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:27,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:00:27,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:27,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:00:27,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:27,454 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 1 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:00:27,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946697022] [2020-10-27 14:00:27,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:00:27,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:00:27,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836430172] [2020-10-27 14:00:27,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:00:27,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:00:27,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:00:27,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:00:27,456 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 22 states. [2020-10-27 14:00:28,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:00:28,609 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2020-10-27 14:00:28,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:00:28,610 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 46 [2020-10-27 14:00:28,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:00:28,611 INFO L225 Difference]: With dead ends: 72 [2020-10-27 14:00:28,611 INFO L226 Difference]: Without dead ends: 69 [2020-10-27 14:00:28,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:00:28,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-27 14:00:28,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-10-27 14:00:28,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-27 14:00:28,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2020-10-27 14:00:28,633 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 46 [2020-10-27 14:00:28,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:00:28,633 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2020-10-27 14:00:28,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:00:28,634 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2020-10-27 14:00:28,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 14:00:28,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:00:28,634 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:00:28,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:00:28,635 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:00:28,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:00:28,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1716730248, now seen corresponding path program 5 times [2020-10-27 14:00:28,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:00:28,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185929074] [2020-10-27 14:00:28,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:00:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:28,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:28,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:29,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:29,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 14:00:29,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:00:29,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-10-27 14:00:29,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:29,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:00:29,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:00:29,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:00:29,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:29,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:00:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:29,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:29,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:29,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:00:29,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:29,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:00:29,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:29,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:00:29,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:29,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:00:29,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:29,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 14:00:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:29,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:29,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:29,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:29,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:29,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:00:29,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:29,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:29,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:29,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:29,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:29,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 14:00:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:29,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:29,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:29,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:29,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:29,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:00:29,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:29,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:29,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:29,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:29,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:29,343 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 14:00:29,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185929074] [2020-10-27 14:00:29,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:00:29,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:00:29,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524456010] [2020-10-27 14:00:29,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:00:29,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:00:29,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:00:29,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:00:29,348 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand 13 states. [2020-10-27 14:00:29,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:00:29,595 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-27 14:00:29,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:00:29,596 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-10-27 14:00:29,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:00:29,597 INFO L225 Difference]: With dead ends: 88 [2020-10-27 14:00:29,598 INFO L226 Difference]: Without dead ends: 67 [2020-10-27 14:00:29,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:00:29,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-27 14:00:29,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-27 14:00:29,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-27 14:00:29,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2020-10-27 14:00:29,608 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 48 [2020-10-27 14:00:29,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:00:29,608 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2020-10-27 14:00:29,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:00:29,608 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2020-10-27 14:00:29,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 14:00:29,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:00:29,611 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:00:29,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:00:29,611 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:00:29,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:00:29,612 INFO L82 PathProgramCache]: Analyzing trace with hash 983864509, now seen corresponding path program 6 times [2020-10-27 14:00:29,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:00:29,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898592180] [2020-10-27 14:00:29,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:00:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:29,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:29,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:29,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:30,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:34,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:34,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 14:00:34,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:00:34,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:00:34,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:34,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:00:34,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:00:34,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:00:34,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:35,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:00:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:35,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:35,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:35,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:00:35,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:35,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:00:35,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:35,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:00:35,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:35,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:00:35,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:35,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:00:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:35,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:35,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:35,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:35,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:35,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:00:35,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:00:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:00:35,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:35,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:00:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:35,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:35,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:35,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:35,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:35,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:00:35,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:35,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:35,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:35,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:35,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:35,189 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 82 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:00:35,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898592180] [2020-10-27 14:00:35,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:00:35,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:00:35,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571048691] [2020-10-27 14:00:35,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:00:35,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:00:35,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:00:35,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:00:35,191 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 22 states. [2020-10-27 14:00:36,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:00:36,373 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2020-10-27 14:00:36,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:00:36,375 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 51 [2020-10-27 14:00:36,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:00:36,376 INFO L225 Difference]: With dead ends: 82 [2020-10-27 14:00:36,376 INFO L226 Difference]: Without dead ends: 79 [2020-10-27 14:00:36,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=954, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:00:36,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-27 14:00:36,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2020-10-27 14:00:36,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-27 14:00:36,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2020-10-27 14:00:36,387 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 51 [2020-10-27 14:00:36,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:00:36,387 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2020-10-27 14:00:36,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:00:36,387 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2020-10-27 14:00:36,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 14:00:36,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:00:36,388 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:00:36,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:00:36,388 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:00:36,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:00:36,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1074881624, now seen corresponding path program 7 times [2020-10-27 14:00:36,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:00:36,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062058712] [2020-10-27 14:00:36,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:00:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:36,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:36,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:36,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:36,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:36,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:37,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:37,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:41,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:41,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 14:00:41,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:00:41,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:00:41,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:41,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:00:41,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:00:41,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 14:00:41,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:42,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:00:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:42,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:42,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:42,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:00:42,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:42,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:00:42,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:42,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:00:42,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:42,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:00:42,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:42,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 14:00:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:42,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:42,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:42,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:42,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:42,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:00:42,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:42,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:00:42,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:42,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:00:42,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:42,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:00:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:42,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:42,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:42,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:42,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:42,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:00:42,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:42,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:00:42,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:42,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:00:42,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:42,444 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 103 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:00:42,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062058712] [2020-10-27 14:00:42,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:00:42,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:00:42,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436190269] [2020-10-27 14:00:42,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:00:42,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:00:42,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:00:42,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:00:42,450 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 26 states. [2020-10-27 14:00:44,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:00:44,847 INFO L93 Difference]: Finished difference Result 104 states and 118 transitions. [2020-10-27 14:00:44,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 14:00:44,847 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 54 [2020-10-27 14:00:44,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:00:44,849 INFO L225 Difference]: With dead ends: 104 [2020-10-27 14:00:44,849 INFO L226 Difference]: Without dead ends: 101 [2020-10-27 14:00:44,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=209, Invalid=2047, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 14:00:44,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-27 14:00:44,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 77. [2020-10-27 14:00:44,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-27 14:00:44,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2020-10-27 14:00:44,864 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 54 [2020-10-27 14:00:44,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:00:44,865 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2020-10-27 14:00:44,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:00:44,865 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2020-10-27 14:00:44,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 14:00:44,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:00:44,866 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:00:44,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:00:44,866 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:00:44,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:00:44,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1853576483, now seen corresponding path program 8 times [2020-10-27 14:00:44,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:00:44,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989706778] [2020-10-27 14:00:44,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:00:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:44,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:45,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:45,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:45,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:45,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:46,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:49,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:49,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 14:00:49,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:00:49,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:00:49,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:49,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:00:49,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:00:49,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:00:49,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:50,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:00:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:50,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:50,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:50,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:00:50,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:50,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:00:50,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:00:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:00:50,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:50,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:00:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:50,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:50,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:50,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:50,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:50,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:00:50,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:00:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:00:50,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:51,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:00:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:51,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:51,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:51,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:51,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:51,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:00:51,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:51,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:00:51,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:51,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:00:51,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:51,111 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 3 proven. 127 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:00:51,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989706778] [2020-10-27 14:00:51,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:00:51,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:00:51,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858776630] [2020-10-27 14:00:51,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:00:51,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:00:51,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:00:51,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=698, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:00:51,114 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand 28 states. [2020-10-27 14:00:54,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:00:54,915 INFO L93 Difference]: Finished difference Result 124 states and 144 transitions. [2020-10-27 14:00:54,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-27 14:00:54,916 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 57 [2020-10-27 14:00:54,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:00:54,918 INFO L225 Difference]: With dead ends: 124 [2020-10-27 14:00:54,918 INFO L226 Difference]: Without dead ends: 121 [2020-10-27 14:00:54,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=319, Invalid=3341, Unknown=0, NotChecked=0, Total=3660 [2020-10-27 14:00:54,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-27 14:00:54,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 80. [2020-10-27 14:00:54,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-27 14:00:54,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2020-10-27 14:00:54,940 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 57 [2020-10-27 14:00:54,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:00:54,941 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2020-10-27 14:00:54,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:00:54,941 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2020-10-27 14:00:54,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 14:00:54,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:00:54,942 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:00:54,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:00:54,942 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:00:54,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:00:54,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1788334755, now seen corresponding path program 9 times [2020-10-27 14:00:54,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:00:54,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596983539] [2020-10-27 14:00:54,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:00:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:54,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:55,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:55,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:55,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 14:00:55,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:00:55,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-10-27 14:00:55,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:55,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:00:55,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:00:55,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 14:00:55,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:55,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:00:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:55,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:55,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:55,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:00:55,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:55,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:00:55,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:55,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:00:55,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:55,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:00:55,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:55,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:00:55,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:55,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:55,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:55,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:55,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:55,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:00:55,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:55,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:55,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:55,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:55,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:55,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:00:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:55,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:55,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:55,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:55,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:55,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:00:55,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:55,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:55,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:55,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:55,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:55,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:00:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:55,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:55,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:00:55,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:00:55,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:00:55,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:00:55,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:00:55,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:00:55,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:00:55,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:00:55,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:00:55,641 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 24 proven. 70 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 14:00:55,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596983539] [2020-10-27 14:00:55,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:00:55,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:00:55,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703064580] [2020-10-27 14:00:55,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:00:55,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:00:55,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:00:55,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:00:55,652 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand 15 states. [2020-10-27 14:00:56,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:00:56,030 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2020-10-27 14:00:56,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:00:56,030 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 59 [2020-10-27 14:00:56,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:00:56,031 INFO L225 Difference]: With dead ends: 98 [2020-10-27 14:00:56,031 INFO L226 Difference]: Without dead ends: 69 [2020-10-27 14:00:56,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:00:56,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-27 14:00:56,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-27 14:00:56,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-27 14:00:56,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-10-27 14:00:56,043 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 59 [2020-10-27 14:00:56,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:00:56,043 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-10-27 14:00:56,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:00:56,044 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-10-27 14:00:56,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-27 14:00:56,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:00:56,044 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:00:56,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:00:56,045 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:00:56,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:00:56,045 INFO L82 PathProgramCache]: Analyzing trace with hash 121641528, now seen corresponding path program 10 times [2020-10-27 14:00:56,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:00:56,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567989305] [2020-10-27 14:00:56,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:00:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:00:56,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:56,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:56,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:56,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:56,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:56,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:57,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:57,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:58,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:58,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:58,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:59,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:00:59,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:01,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:01,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 14:01:01,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 14:01:01,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 14:01:01,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:01,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:01:01,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:01:01,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 14:01:01,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:02,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:01:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:02,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:02,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:02,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:01:02,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:02,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:02,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:02,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:01:02,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:02,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:01:02,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:02,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:01:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:02,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:02,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:02,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:02,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:02,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:01:02,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:01:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:01:02,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:02,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:01:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:02,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:02,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:02,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:02,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:02,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:01:02,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:02,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:02,483 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 3 proven. 157 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:01:02,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567989305] [2020-10-27 14:01:02,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:01:02,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:01:02,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8180933] [2020-10-27 14:01:02,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:01:02,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:01:02,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:01:02,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:01:02,486 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 28 states. [2020-10-27 14:01:06,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:01:06,402 INFO L93 Difference]: Finished difference Result 124 states and 145 transitions. [2020-10-27 14:01:06,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-27 14:01:06,403 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 60 [2020-10-27 14:01:06,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:01:06,404 INFO L225 Difference]: With dead ends: 124 [2020-10-27 14:01:06,404 INFO L226 Difference]: Without dead ends: 121 [2020-10-27 14:01:06,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=374, Invalid=3166, Unknown=0, NotChecked=0, Total=3540 [2020-10-27 14:01:06,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-27 14:01:06,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 72. [2020-10-27 14:01:06,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-27 14:01:06,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 83 transitions. [2020-10-27 14:01:06,424 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 83 transitions. Word has length 60 [2020-10-27 14:01:06,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:01:06,424 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 83 transitions. [2020-10-27 14:01:06,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:01:06,425 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 83 transitions. [2020-10-27 14:01:06,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 14:01:06,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:01:06,425 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:01:06,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:01:06,426 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:01:06,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:01:06,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1597298494, now seen corresponding path program 11 times [2020-10-27 14:01:06,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:01:06,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787937484] [2020-10-27 14:01:06,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:01:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:06,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:06,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:06,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:06,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:06,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:11,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:11,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 14:01:11,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:01:11,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:01:11,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:11,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:01:11,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:01:11,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 14:01:11,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:11,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:01:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:11,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:11,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:11,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:01:11,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:11,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:11,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:11,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:01:11,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:11,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:01:11,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:11,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 14:01:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:11,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:11,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:11,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:11,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:11,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:11,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:11,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:11,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:11,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:11,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:11,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:01:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:11,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:11,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:11,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:11,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:11,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:11,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:11,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:11,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:11,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:11,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:11,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 14:01:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:11,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:11,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:11,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:11,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:11,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:01:11,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:01:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:01:11,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:12,032 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 11 proven. 111 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 14:01:12,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787937484] [2020-10-27 14:01:12,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:01:12,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:01:12,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556597967] [2020-10-27 14:01:12,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:01:12,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:01:12,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:01:12,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:01:12,034 INFO L87 Difference]: Start difference. First operand 72 states and 83 transitions. Second operand 23 states. [2020-10-27 14:01:13,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:01:13,820 INFO L93 Difference]: Finished difference Result 98 states and 114 transitions. [2020-10-27 14:01:13,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 14:01:13,820 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 62 [2020-10-27 14:01:13,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:01:13,822 INFO L225 Difference]: With dead ends: 98 [2020-10-27 14:01:13,822 INFO L226 Difference]: Without dead ends: 95 [2020-10-27 14:01:13,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=128, Invalid=1278, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:01:13,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-27 14:01:13,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 79. [2020-10-27 14:01:13,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-27 14:01:13,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 92 transitions. [2020-10-27 14:01:13,837 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 92 transitions. Word has length 62 [2020-10-27 14:01:13,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:01:13,838 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 92 transitions. [2020-10-27 14:01:13,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:01:13,838 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 92 transitions. [2020-10-27 14:01:13,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 14:01:13,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:01:13,839 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:01:13,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:01:13,839 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:01:13,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:01:13,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1505515267, now seen corresponding path program 12 times [2020-10-27 14:01:13,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:01:13,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939723178] [2020-10-27 14:01:13,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:01:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:13,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:14,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:14,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:14,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:14,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:15,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:16,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:18,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:18,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 14:01:18,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:01:18,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:01:18,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:18,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:01:18,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:01:18,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:01:18,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:19,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:01:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:19,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:19,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:19,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:01:19,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:19,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:19,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:19,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:01:19,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:19,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:01:19,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:19,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:01:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:19,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:19,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:19,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:19,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:19,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:19,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:19,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:01:19,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:19,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:01:19,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:19,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:01:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:19,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:19,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:19,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:19,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:19,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:01:19,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:19,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:19,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:19,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:19,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:19,710 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 12 proven. 179 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:01:19,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939723178] [2020-10-27 14:01:19,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:01:19,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:01:19,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452745866] [2020-10-27 14:01:19,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:01:19,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:01:19,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:01:19,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:01:19,712 INFO L87 Difference]: Start difference. First operand 79 states and 92 transitions. Second operand 27 states. [2020-10-27 14:01:22,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:01:22,072 INFO L93 Difference]: Finished difference Result 108 states and 126 transitions. [2020-10-27 14:01:22,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 14:01:22,072 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 63 [2020-10-27 14:01:22,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:01:22,074 INFO L225 Difference]: With dead ends: 108 [2020-10-27 14:01:22,074 INFO L226 Difference]: Without dead ends: 105 [2020-10-27 14:01:22,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=273, Invalid=2079, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 14:01:22,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-27 14:01:22,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 70. [2020-10-27 14:01:22,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-27 14:01:22,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-10-27 14:01:22,088 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 63 [2020-10-27 14:01:22,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:01:22,088 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-10-27 14:01:22,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:01:22,089 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-10-27 14:01:22,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 14:01:22,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:01:22,089 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:01:22,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:01:22,090 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:01:22,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:01:22,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1267714243, now seen corresponding path program 13 times [2020-10-27 14:01:22,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:01:22,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191928979] [2020-10-27 14:01:22,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:01:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:22,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:22,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:22,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:22,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:23,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:23,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:27,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:27,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 14:01:27,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:01:27,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:01:27,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:27,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:01:27,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:01:27,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 14:01:27,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:27,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:01:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:27,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:27,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:27,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:01:27,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:27,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:01:27,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:01:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:01:27,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:27,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:01:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:27,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:27,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:27,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:27,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:27,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:27,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:27,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:27,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:27,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:27,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:27,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:01:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:27,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:27,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:27,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:27,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:27,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:01:27,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:27,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:01:27,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:27,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:01:27,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:27,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:01:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:27,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:27,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:27,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:27,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:27,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:27,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:27,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:27,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:27,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:27,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:27,872 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 8 proven. 139 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 14:01:27,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191928979] [2020-10-27 14:01:27,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:01:27,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:01:27,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495425910] [2020-10-27 14:01:27,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:01:27,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:01:27,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:01:27,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:01:27,875 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 26 states. [2020-10-27 14:01:30,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:01:30,164 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2020-10-27 14:01:30,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 14:01:30,165 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 65 [2020-10-27 14:01:30,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:01:30,166 INFO L225 Difference]: With dead ends: 115 [2020-10-27 14:01:30,166 INFO L226 Difference]: Without dead ends: 112 [2020-10-27 14:01:30,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=182, Invalid=1888, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 14:01:30,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-27 14:01:30,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 73. [2020-10-27 14:01:30,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-27 14:01:30,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2020-10-27 14:01:30,181 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 65 [2020-10-27 14:01:30,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:01:30,181 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2020-10-27 14:01:30,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:01:30,182 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2020-10-27 14:01:30,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 14:01:30,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:01:30,182 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:01:30,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:01:30,183 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:01:30,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:01:30,183 INFO L82 PathProgramCache]: Analyzing trace with hash 918531358, now seen corresponding path program 14 times [2020-10-27 14:01:30,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:01:30,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804571781] [2020-10-27 14:01:30,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:01:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:30,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:30,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:30,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:30,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:30,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:31,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:31,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:32,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:32,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:33,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:33,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:33,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:33,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:33,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:35,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:35,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:35,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 14:01:35,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 14:01:35,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:01:35,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:35,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:01:35,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:01:35,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 14:01:35,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:35,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:01:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:35,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:35,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:35,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:01:35,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:35,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:01:35,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:35,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:01:35,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:35,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:01:35,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:35,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:01:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:35,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:35,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:35,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:35,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:35,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:35,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:35,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:35,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:35,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:35,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:35,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:01:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:35,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:35,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:35,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:35,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:35,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:35,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:35,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:35,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:35,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:35,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:35,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:01:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:35,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:35,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:35,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:35,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:35,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:35,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:35,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:01:35,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:35,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:01:35,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:36,008 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 11 proven. 164 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 14:01:36,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804571781] [2020-10-27 14:01:36,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:01:36,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:01:36,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760284789] [2020-10-27 14:01:36,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:01:36,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:01:36,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:01:36,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=596, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:01:36,010 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand 26 states. [2020-10-27 14:01:37,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:01:37,778 INFO L93 Difference]: Finished difference Result 94 states and 107 transitions. [2020-10-27 14:01:37,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 14:01:37,779 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 68 [2020-10-27 14:01:37,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:01:37,780 INFO L225 Difference]: With dead ends: 94 [2020-10-27 14:01:37,780 INFO L226 Difference]: Without dead ends: 91 [2020-10-27 14:01:37,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=134, Invalid=1272, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:01:37,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-27 14:01:37,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 64. [2020-10-27 14:01:37,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-27 14:01:37,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2020-10-27 14:01:37,791 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 68 [2020-10-27 14:01:37,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:01:37,792 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2020-10-27 14:01:37,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:01:37,792 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2020-10-27 14:01:37,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 14:01:37,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:01:37,792 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:01:37,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:01:37,793 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:01:37,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:01:37,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1514275876, now seen corresponding path program 15 times [2020-10-27 14:01:37,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:01:37,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932888607] [2020-10-27 14:01:37,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:01:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:37,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:37,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:38,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:38,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 14:01:38,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:01:38,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 545 [2020-10-27 14:01:38,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:38,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:01:38,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:01:38,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 14:01:38,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:38,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:01:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:38,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:38,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:38,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:01:38,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:38,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:38,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:38,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:01:38,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:38,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:01:38,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:38,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 14:01:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:38,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:38,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:38,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:38,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:38,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:01:38,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:38,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:38,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:38,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:38,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:38,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:01:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:38,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:38,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:38,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:38,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:38,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:38,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:38,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:38,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:38,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:38,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:38,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 14:01:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:38,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:38,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:38,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:38,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:38,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:01:38,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:38,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:38,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:38,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:38,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:38,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 14:01:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:38,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:38,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:38,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:38,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:38,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:01:38,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:38,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:38,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:38,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:38,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:38,613 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 40 proven. 92 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 14:01:38,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932888607] [2020-10-27 14:01:38,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:01:38,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:01:38,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998543994] [2020-10-27 14:01:38,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:01:38,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:01:38,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:01:38,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:01:38,615 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand 17 states. [2020-10-27 14:01:39,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:01:39,064 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2020-10-27 14:01:39,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:01:39,065 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-27 14:01:39,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:01:39,067 INFO L225 Difference]: With dead ends: 97 [2020-10-27 14:01:39,067 INFO L226 Difference]: Without dead ends: 68 [2020-10-27 14:01:39,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:01:39,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-27 14:01:39,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-27 14:01:39,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-27 14:01:39,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2020-10-27 14:01:39,079 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 70 [2020-10-27 14:01:39,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:01:39,080 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2020-10-27 14:01:39,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:01:39,080 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2020-10-27 14:01:39,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-27 14:01:39,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:01:39,081 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:01:39,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:01:39,081 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:01:39,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:01:39,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1062625111, now seen corresponding path program 16 times [2020-10-27 14:01:39,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:01:39,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690103634] [2020-10-27 14:01:39,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:01:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:39,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:39,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:39,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:39,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:39,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:39,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:44,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:44,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 14:01:44,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:01:44,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:01:44,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:44,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:01:44,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:01:44,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 14:01:44,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:44,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:01:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:44,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:44,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:44,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:01:44,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:44,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:44,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:44,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:01:44,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:44,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:01:44,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:44,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:01:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:44,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:44,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:44,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:44,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:44,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:44,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:44,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:44,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:44,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:44,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:44,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:01:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:44,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:44,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:44,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:44,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:44,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:44,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:44,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:01:44,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:44,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:01:44,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:44,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:01:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:44,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:44,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:44,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:44,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:44,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:44,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:44,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:44,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:44,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:44,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:44,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:01:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:44,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:44,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:44,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:44,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:44,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:44,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:44,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:44,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:44,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:44,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:44,986 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 10 proven. 156 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:01:44,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690103634] [2020-10-27 14:01:44,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:01:44,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:01:44,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489275341] [2020-10-27 14:01:44,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:01:44,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:01:44,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:01:44,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=648, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:01:44,988 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 27 states. [2020-10-27 14:01:47,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:01:47,046 INFO L93 Difference]: Finished difference Result 100 states and 113 transitions. [2020-10-27 14:01:47,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 14:01:47,046 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 73 [2020-10-27 14:01:47,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:01:47,047 INFO L225 Difference]: With dead ends: 100 [2020-10-27 14:01:47,048 INFO L226 Difference]: Without dead ends: 97 [2020-10-27 14:01:47,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=149, Invalid=1743, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 14:01:47,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-27 14:01:47,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 77. [2020-10-27 14:01:47,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-27 14:01:47,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2020-10-27 14:01:47,065 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 73 [2020-10-27 14:01:47,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:01:47,066 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2020-10-27 14:01:47,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:01:47,066 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2020-10-27 14:01:47,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 14:01:47,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:01:47,067 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:01:47,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:01:47,067 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:01:47,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:01:47,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1274480124, now seen corresponding path program 17 times [2020-10-27 14:01:47,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:01:47,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417813598] [2020-10-27 14:01:47,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:01:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:47,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:47,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:47,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:47,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:47,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:47,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:48,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:49,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:50,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:50,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:50,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:51,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:52,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:52,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 14:01:52,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 14:01:52,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:01:52,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:01:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:01:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 14:01:52,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:53,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:01:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:53,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:53,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:53,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:01:53,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:53,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:01:53,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:53,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:01:53,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:53,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:01:53,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:53,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:01:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:53,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:53,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:53,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:53,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:53,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:53,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:53,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:53,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:53,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:53,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:53,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:01:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:53,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:53,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:53,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:53,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:53,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:01:53,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:53,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:01:53,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:53,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:01:53,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:53,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:01:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:53,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:53,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:53,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:53,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:53,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:01:53,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:53,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:01:53,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:53,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:01:53,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:53,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:01:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:53,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:53,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:01:53,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:01:53,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:01:53,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:01:53,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:01:53,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:01:53,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:01:53,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:01:53,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:01:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 18 proven. 179 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 14:01:53,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417813598] [2020-10-27 14:01:53,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:01:53,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 14:01:53,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604777321] [2020-10-27 14:01:53,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 14:01:53,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:01:53,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 14:01:53,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=754, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:01:53,375 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 29 states. [2020-10-27 14:01:57,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:01:57,069 INFO L93 Difference]: Finished difference Result 130 states and 151 transitions. [2020-10-27 14:01:57,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 14:01:57,071 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 76 [2020-10-27 14:01:57,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:01:57,073 INFO L225 Difference]: With dead ends: 130 [2020-10-27 14:01:57,073 INFO L226 Difference]: Without dead ends: 127 [2020-10-27 14:01:57,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=250, Invalid=2942, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 14:01:57,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-27 14:01:57,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 80. [2020-10-27 14:01:57,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-27 14:01:57,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2020-10-27 14:01:57,092 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 91 transitions. Word has length 76 [2020-10-27 14:01:57,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:01:57,092 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 91 transitions. [2020-10-27 14:01:57,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 14:01:57,092 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 91 transitions. [2020-10-27 14:01:57,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 14:01:57,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:01:57,093 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:01:57,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:01:57,094 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:01:57,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:01:57,094 INFO L82 PathProgramCache]: Analyzing trace with hash 954752713, now seen corresponding path program 18 times [2020-10-27 14:01:57,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:01:57,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508054919] [2020-10-27 14:01:57,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:01:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:01:57,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:57,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:57,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:57,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:59,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:01:59,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:00,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:00,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:00,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:00,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:01,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:01,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:01,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:02,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:02,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 14:02:02,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 14:02:02,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:02:02,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:02,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:02:02,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:02:02,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 14:02:02,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:03,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:02:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:03,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:03,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:03,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:02:03,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:03,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:03,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:03,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:02:03,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:03,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:02:03,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:03,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:02:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:03,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:03,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:03,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:03,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:03,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:03,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:03,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:03,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:03,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:03,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:03,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:02:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:03,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:03,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:03,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:03,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:03,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:03,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:03,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:03,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:03,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:03,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:03,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:02:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:03,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:03,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:03,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:03,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:03,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:02:03,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:03,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:02:03,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:03,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:02:03,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:03,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:02:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:03,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:03,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:03,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:03,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:03,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:03,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:03,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:03,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:03,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:03,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:03,574 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 13 proven. 212 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:02:03,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508054919] [2020-10-27 14:02:03,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:02:03,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:02:03,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660942310] [2020-10-27 14:02:03,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:02:03,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:02:03,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:02:03,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:02:03,576 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. Second operand 30 states. [2020-10-27 14:02:08,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:02:08,814 INFO L93 Difference]: Finished difference Result 159 states and 188 transitions. [2020-10-27 14:02:08,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-27 14:02:08,814 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 79 [2020-10-27 14:02:08,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:02:08,817 INFO L225 Difference]: With dead ends: 159 [2020-10-27 14:02:08,817 INFO L226 Difference]: Without dead ends: 156 [2020-10-27 14:02:08,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1145 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=558, Invalid=4992, Unknown=0, NotChecked=0, Total=5550 [2020-10-27 14:02:08,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-27 14:02:08,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 83. [2020-10-27 14:02:08,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-27 14:02:08,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 96 transitions. [2020-10-27 14:02:08,846 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 96 transitions. Word has length 79 [2020-10-27 14:02:08,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:02:08,846 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 96 transitions. [2020-10-27 14:02:08,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:02:08,847 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 96 transitions. [2020-10-27 14:02:08,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 14:02:08,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:02:08,848 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:02:08,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:02:08,848 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:02:08,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:02:08,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1149750641, now seen corresponding path program 19 times [2020-10-27 14:02:08,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:02:08,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847361666] [2020-10-27 14:02:08,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:02:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:08,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:08,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:09,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:09,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 14:02:09,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:02:09,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 786 [2020-10-27 14:02:09,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:09,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:02:09,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:02:09,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 14:02:09,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:09,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:02:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:09,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:09,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:09,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:02:09,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:09,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:02:09,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:09,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:02:09,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:09,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:02:09,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:09,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:02:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:09,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:09,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:09,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:09,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:09,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:02:09,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:09,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:09,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:02:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:09,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:09,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:09,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:09,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:09,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:09,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:09,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:09,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:09,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:09,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:09,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:02:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:09,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:09,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:09,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:09,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:09,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:09,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:09,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:09,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:09,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:09,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:09,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:02:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:09,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:09,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:09,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:09,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:09,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:09,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:09,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:09,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:09,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:09,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:09,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:02:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:09,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:09,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:09,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:09,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:09,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:09,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:09,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:09,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:09,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:09,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:09,994 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 60 proven. 117 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-27 14:02:09,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847361666] [2020-10-27 14:02:09,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:02:09,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:02:09,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899097994] [2020-10-27 14:02:09,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:02:09,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:02:09,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:02:09,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:02:09,997 INFO L87 Difference]: Start difference. First operand 83 states and 96 transitions. Second operand 19 states. [2020-10-27 14:02:10,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:02:10,582 INFO L93 Difference]: Finished difference Result 116 states and 134 transitions. [2020-10-27 14:02:10,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:02:10,583 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 81 [2020-10-27 14:02:10,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:02:10,585 INFO L225 Difference]: With dead ends: 116 [2020-10-27 14:02:10,585 INFO L226 Difference]: Without dead ends: 83 [2020-10-27 14:02:10,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:02:10,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-27 14:02:10,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-27 14:02:10,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-27 14:02:10,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2020-10-27 14:02:10,604 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 81 [2020-10-27 14:02:10,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:02:10,604 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2020-10-27 14:02:10,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:02:10,604 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2020-10-27 14:02:10,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 14:02:10,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:02:10,605 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:02:10,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:02:10,606 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:02:10,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:02:10,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1049098268, now seen corresponding path program 20 times [2020-10-27 14:02:10,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:02:10,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449090384] [2020-10-27 14:02:10,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:02:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:10,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:10,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:10,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:11,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:11,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:12,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:12,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:13,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:14,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:14,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:15,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:15,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 14:02:15,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 14:02:15,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:02:15,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:15,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:02:15,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:02:15,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 14:02:15,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:17,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:02:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:17,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:17,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:17,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:02:17,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:17,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:02:17,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:17,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:02:17,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:17,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:02:17,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:17,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:02:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:17,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:17,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:17,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:17,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:17,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:02:17,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:17,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:17,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:17,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:17,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:17,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 14:02:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:17,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:17,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:17,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:17,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:17,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:02:17,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:17,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:17,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:17,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:17,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:17,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:02:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:17,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:17,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:17,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:17,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:17,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:02:17,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:17,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:17,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:02:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:17,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:17,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:17,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:17,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:17,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:02:17,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:17,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:02:17,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:17,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:02:17,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:17,251 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 16 proven. 243 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:02:17,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449090384] [2020-10-27 14:02:17,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:02:17,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 14:02:17,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474396347] [2020-10-27 14:02:17,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 14:02:17,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:02:17,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 14:02:17,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:02:17,254 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand 31 states. [2020-10-27 14:02:20,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:02:20,679 INFO L93 Difference]: Finished difference Result 133 states and 154 transitions. [2020-10-27 14:02:20,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-27 14:02:20,681 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 82 [2020-10-27 14:02:20,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:02:20,683 INFO L225 Difference]: With dead ends: 133 [2020-10-27 14:02:20,683 INFO L226 Difference]: Without dead ends: 130 [2020-10-27 14:02:20,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=315, Invalid=2547, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 14:02:20,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-27 14:02:20,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 74. [2020-10-27 14:02:20,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-27 14:02:20,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2020-10-27 14:02:20,705 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 82 [2020-10-27 14:02:20,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:02:20,705 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2020-10-27 14:02:20,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 14:02:20,706 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2020-10-27 14:02:20,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 14:02:20,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:02:20,707 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:02:20,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:02:20,707 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:02:20,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:02:20,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1589772522, now seen corresponding path program 21 times [2020-10-27 14:02:20,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:02:20,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123738385] [2020-10-27 14:02:20,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:02:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:20,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:21,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:21,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:21,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:21,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:25,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:25,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 14:02:25,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:02:25,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:02:25,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:25,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:02:25,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:02:25,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 14:02:25,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:26,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:02:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:26,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:26,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:26,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:02:26,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:26,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:02:26,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:26,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:02:26,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:26,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:02:26,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:26,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:02:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:26,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:26,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:26,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:26,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:26,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:26,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:26,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:26,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:26,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:26,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:02:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:26,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:26,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:26,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:26,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:26,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:26,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:26,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:26,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:02:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:26,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:26,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:26,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:26,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:26,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:02:26,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:26,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:02:26,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:26,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:02:26,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:26,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:02:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:26,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:26,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:26,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:26,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:26,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:26,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:26,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:26,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:26,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:26,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:26,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:02:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:26,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:26,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:26,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:26,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:26,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:02:26,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:26,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:26,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:26,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:26,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:26,921 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 15 proven. 202 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-27 14:02:26,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123738385] [2020-10-27 14:02:26,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:02:26,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:02:26,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120722711] [2020-10-27 14:02:26,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:02:26,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:02:26,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:02:26,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=809, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:02:26,924 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 30 states. [2020-10-27 14:02:29,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:02:29,625 INFO L93 Difference]: Finished difference Result 113 states and 127 transitions. [2020-10-27 14:02:29,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:02:29,631 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 84 [2020-10-27 14:02:29,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:02:29,633 INFO L225 Difference]: With dead ends: 113 [2020-10-27 14:02:29,633 INFO L226 Difference]: Without dead ends: 110 [2020-10-27 14:02:29,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=141, Invalid=1839, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 14:02:29,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-27 14:02:29,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 104. [2020-10-27 14:02:29,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-27 14:02:29,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 117 transitions. [2020-10-27 14:02:29,663 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 117 transitions. Word has length 84 [2020-10-27 14:02:29,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:02:29,664 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 117 transitions. [2020-10-27 14:02:29,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:02:29,664 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 117 transitions. [2020-10-27 14:02:29,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 14:02:29,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:02:29,665 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:02:29,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:02:29,665 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:02:29,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:02:29,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1755762863, now seen corresponding path program 22 times [2020-10-27 14:02:29,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:02:29,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705825173] [2020-10-27 14:02:29,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:02:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:29,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:29,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:29,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:30,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:30,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:30,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:34,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:34,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 14:02:34,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:02:34,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:02:34,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:34,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:02:34,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:02:34,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 14:02:34,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:35,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:02:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:35,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:35,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:35,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:02:35,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:35,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:35,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:35,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:02:35,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:35,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:02:35,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:36,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:02:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:36,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:36,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:36,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:36,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:36,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:36,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:36,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:36,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:36,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:36,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:36,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:02:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:36,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:36,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:36,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:36,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:36,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:02:36,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:36,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:02:36,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:36,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:02:36,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:36,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:02:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:36,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:36,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:36,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:36,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:36,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:36,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:36,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:36,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:36,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:36,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:36,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:02:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:36,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:36,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:36,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:36,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:36,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:36,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:36,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:36,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:36,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:36,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:36,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:02:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:36,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:36,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:36,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:36,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:36,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:36,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:36,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:36,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:36,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:36,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 236 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-27 14:02:36,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705825173] [2020-10-27 14:02:36,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:02:36,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 14:02:36,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301752431] [2020-10-27 14:02:36,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 14:02:36,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:02:36,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 14:02:36,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=925, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:02:36,120 INFO L87 Difference]: Start difference. First operand 104 states and 117 transitions. Second operand 32 states. [2020-10-27 14:02:40,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:02:40,456 INFO L93 Difference]: Finished difference Result 147 states and 170 transitions. [2020-10-27 14:02:40,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-27 14:02:40,456 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 87 [2020-10-27 14:02:40,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:02:40,457 INFO L225 Difference]: With dead ends: 147 [2020-10-27 14:02:40,458 INFO L226 Difference]: Without dead ends: 144 [2020-10-27 14:02:40,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=306, Invalid=3984, Unknown=0, NotChecked=0, Total=4290 [2020-10-27 14:02:40,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-27 14:02:40,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 114. [2020-10-27 14:02:40,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-27 14:02:40,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2020-10-27 14:02:40,490 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 87 [2020-10-27 14:02:40,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:02:40,490 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2020-10-27 14:02:40,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 14:02:40,491 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2020-10-27 14:02:40,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 14:02:40,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:02:40,493 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:02:40,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:02:40,493 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:02:40,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:02:40,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1028313398, now seen corresponding path program 23 times [2020-10-27 14:02:40,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:02:40,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855887366] [2020-10-27 14:02:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:02:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:40,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:40,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:40,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:40,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:41,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:42,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:43,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:43,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:44,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:45,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:45,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 14:02:45,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 14:02:45,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:02:45,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:45,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-27 14:02:45,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:02:45,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 14:02:45,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:46,477 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-10-27 14:02:47,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:02:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:47,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:47,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:47,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:02:47,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:47,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:47,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:47,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:02:47,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:47,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:02:47,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:47,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:02:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:47,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:47,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:47,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:47,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:47,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:02:47,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:47,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:02:47,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:47,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:02:47,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:48,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 14:02:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:48,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:48,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:48,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:48,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:48,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:48,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:48,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:48,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:48,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:48,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:48,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:02:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:48,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:48,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:48,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:48,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:48,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:48,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:48,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:48,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:48,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:48,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:48,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:02:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:48,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:48,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:48,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:48,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:48,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:02:48,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:48,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:02:48,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:48,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:02:48,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:48,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:02:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:48,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:48,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:48,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:48,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:48,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:48,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:48,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:48,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:48,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:48,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:48,201 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 14 proven. 274 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-27 14:02:48,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855887366] [2020-10-27 14:02:48,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:02:48,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-27 14:02:48,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116969454] [2020-10-27 14:02:48,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-27 14:02:48,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:02:48,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-27 14:02:48,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1251, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:02:48,203 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 37 states. [2020-10-27 14:02:56,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:02:56,038 INFO L93 Difference]: Finished difference Result 183 states and 214 transitions. [2020-10-27 14:02:56,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-27 14:02:56,040 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 90 [2020-10-27 14:02:56,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:02:56,044 INFO L225 Difference]: With dead ends: 183 [2020-10-27 14:02:56,045 INFO L226 Difference]: Without dead ends: 180 [2020-10-27 14:02:56,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1293 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=452, Invalid=6028, Unknown=0, NotChecked=0, Total=6480 [2020-10-27 14:02:56,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-27 14:02:56,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 110. [2020-10-27 14:02:56,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-27 14:02:56,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions. [2020-10-27 14:02:56,095 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 90 [2020-10-27 14:02:56,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:02:56,096 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions. [2020-10-27 14:02:56,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-27 14:02:56,096 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions. [2020-10-27 14:02:56,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 14:02:56,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:02:56,098 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:02:56,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:02:56,098 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:02:56,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:02:56,099 INFO L82 PathProgramCache]: Analyzing trace with hash 277922256, now seen corresponding path program 24 times [2020-10-27 14:02:56,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:02:56,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989780338] [2020-10-27 14:02:56,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:02:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:56,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:56,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:57,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:57,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 14:02:57,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:02:57,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1120 [2020-10-27 14:02:57,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:57,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:02:57,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:02:57,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 14:02:57,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:57,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:02:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:57,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:57,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:57,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:02:57,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:57,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:57,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:57,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:02:57,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:57,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:02:57,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:57,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:02:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:57,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:57,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:57,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:57,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:57,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:02:57,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:57,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:57,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:57,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:57,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:57,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:02:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:57,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:57,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:57,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:57,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:57,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:02:57,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:57,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:57,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:57,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:57,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:57,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:02:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:57,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:57,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:57,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:57,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:57,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:02:57,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:57,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:57,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:57,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:57,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:57,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:02:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:57,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:57,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:57,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:57,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:57,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:57,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:57,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:57,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:57,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:57,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:57,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:02:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:57,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:57,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:57,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:57,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:57,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:02:57,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:57,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:57,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:57,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:57,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:57,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:02:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:57,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:57,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:02:57,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:02:57,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:02:57,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:02:57,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:02:57,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:02:57,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:02:57,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:02:57,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:02:57,671 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 84 proven. 145 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-27 14:02:57,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989780338] [2020-10-27 14:02:57,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:02:57,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:02:57,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974475187] [2020-10-27 14:02:57,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:02:57,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:02:57,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:02:57,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:02:57,673 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand 21 states. [2020-10-27 14:02:58,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:02:58,448 INFO L93 Difference]: Finished difference Result 147 states and 170 transitions. [2020-10-27 14:02:58,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:02:58,449 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 92 [2020-10-27 14:02:58,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:02:58,451 INFO L225 Difference]: With dead ends: 147 [2020-10-27 14:02:58,452 INFO L226 Difference]: Without dead ends: 110 [2020-10-27 14:02:58,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:02:58,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-27 14:02:58,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-10-27 14:02:58,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-27 14:02:58,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2020-10-27 14:02:58,497 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 92 [2020-10-27 14:02:58,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:02:58,498 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2020-10-27 14:02:58,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:02:58,498 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2020-10-27 14:02:58,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 14:02:58,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:02:58,503 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:02:58,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 14:02:58,504 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:02:58,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:02:58,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1330751793, now seen corresponding path program 25 times [2020-10-27 14:02:58,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:02:58,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157021662] [2020-10-27 14:02:58,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:02:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:02:58,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:58,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:58,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:59,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:02:59,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:00,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:01,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:01,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:02,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:02,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:02,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:03,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:03,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 14:03:03,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 14:03:03,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:03:03,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:03,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 14:03:03,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:03:03,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 14:03:03,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:05,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:05,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:05,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:05,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:05,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:05,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:03:05,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:05,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:05,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:05,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:05,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:05,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 14:03:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:05,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:05,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:05,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:05,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:05,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:03:05,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:05,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:05,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:05,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:05,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:05,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:03:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:05,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:05,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:05,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:05,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:05,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:03:05,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:05,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:05,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:05,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:05,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:05,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:03:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:05,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:05,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:05,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:05,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:05,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:03:05,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:05,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:05,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:05,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:05,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:05,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:03:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:05,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:05,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:05,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:05,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:05,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:03:05,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:05,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:03:05,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:05,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:03:05,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:05,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 14:03:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:05,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:05,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:05,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:05,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:05,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:03:05,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:05,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:05,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:05,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:05,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:06,019 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 18 proven. 301 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-27 14:03:06,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157021662] [2020-10-27 14:03:06,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:06,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 14:03:06,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177097220] [2020-10-27 14:03:06,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 14:03:06,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:06,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 14:03:06,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=976, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:03:06,022 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand 34 states. [2020-10-27 14:03:07,408 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2020-10-27 14:03:07,953 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-27 14:03:10,954 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-27 14:03:15,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:15,121 INFO L93 Difference]: Finished difference Result 183 states and 215 transitions. [2020-10-27 14:03:15,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-10-27 14:03:15,122 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 93 [2020-10-27 14:03:15,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:15,123 INFO L225 Difference]: With dead ends: 183 [2020-10-27 14:03:15,123 INFO L226 Difference]: Without dead ends: 180 [2020-10-27 14:03:15,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1605 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=690, Invalid=6792, Unknown=0, NotChecked=0, Total=7482 [2020-10-27 14:03:15,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-27 14:03:15,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 120. [2020-10-27 14:03:15,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-27 14:03:15,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2020-10-27 14:03:15,160 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 93 [2020-10-27 14:03:15,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:03:15,161 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2020-10-27 14:03:15,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-27 14:03:15,161 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2020-10-27 14:03:15,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 14:03:15,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:03:15,162 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:03:15,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 14:03:15,162 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:03:15,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:03:15,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1692400789, now seen corresponding path program 26 times [2020-10-27 14:03:15,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:03:15,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143896665] [2020-10-27 14:03:15,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:03:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:15,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:15,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:15,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:16,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:16,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:16,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:20,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:20,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 14:03:20,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:03:20,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:03:20,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:20,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 14:03:20,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:03:20,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 14:03:20,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:21,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:03:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:21,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:21,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:21,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:03:21,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:21,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:03:21,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:03:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:03:21,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:21,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:03:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:21,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:21,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:21,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:21,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:21,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:03:21,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:21,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:21,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:21,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:21,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:21,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:03:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:21,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:21,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:21,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:21,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:21,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:03:21,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:03:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:03:21,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:21,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:03:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:21,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:21,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:21,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:21,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:21,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:03:21,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:21,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:21,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:21,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:21,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:21,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:03:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:21,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:21,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:21,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:21,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:21,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:03:21,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:21,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:21,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:21,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:21,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:21,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:03:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:21,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:21,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:21,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:21,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:21,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:03:21,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:21,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:21,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:21,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:21,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:21,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 14:03:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:03:21,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:03:21,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:03:21,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:03:21,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:03:21,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:03:21,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:03:21,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:03:21,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:03:21,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:03:21,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:03:21,919 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 14 proven. 261 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-27 14:03:21,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143896665] [2020-10-27 14:03:21,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:03:21,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 14:03:21,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005048702] [2020-10-27 14:03:21,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 14:03:21,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:03:21,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 14:03:21,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=1051, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:03:21,921 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand 34 states. [2020-10-27 14:03:25,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:03:25,870 INFO L93 Difference]: Finished difference Result 160 states and 186 transitions. [2020-10-27 14:03:25,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 14:03:25,872 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 95 [2020-10-27 14:03:25,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:03:25,874 INFO L225 Difference]: With dead ends: 160 [2020-10-27 14:03:25,875 INFO L226 Difference]: Without dead ends: 157 [2020-10-27 14:03:25,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=155, Invalid=2295, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 14:03:25,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states.