/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:51:24,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:51:24,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:51:24,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:51:24,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:51:24,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:51:24,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:51:24,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:51:24,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:51:24,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:51:24,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:51:24,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:51:24,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:51:24,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:51:24,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:51:24,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:51:24,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:51:24,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:51:24,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:51:24,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:51:24,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:51:24,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:51:24,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:51:24,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:51:24,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:51:24,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:51:24,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:51:24,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:51:24,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:51:24,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:51:24,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:51:24,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:51:24,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:51:24,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:51:24,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:51:24,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:51:24,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:51:24,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:51:24,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:51:24,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:51:25,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:51:25,010 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 04:51:25,061 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:51:25,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:51:25,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:51:25,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:51:25,067 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:51:25,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:51:25,067 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:51:25,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:51:25,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:51:25,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:51:25,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:51:25,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:51:25,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:51:25,070 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:51:25,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:51:25,070 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:51:25,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:51:25,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:51:25,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:51:25,071 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:51:25,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:51:25,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:51:25,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:51:25,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:51:25,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:51:25,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:51:25,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:51:25,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:51:25,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:51:25,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:51:25,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:51:25,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:51:25,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:51:25,563 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:51:25,564 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:51:25,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label05.c [2020-10-29 04:51:25,639 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b31b7b0d7/67ecb6cc6eae426798488e3310f337e2/FLAG0a2633af9 [2020-10-29 04:51:26,522 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:51:26,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label05.c [2020-10-29 04:51:26,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b31b7b0d7/67ecb6cc6eae426798488e3310f337e2/FLAG0a2633af9 [2020-10-29 04:51:26,663 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b31b7b0d7/67ecb6cc6eae426798488e3310f337e2 [2020-10-29 04:51:26,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:51:26,680 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:51:26,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:51:26,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:51:26,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:51:26,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:51:26" (1/1) ... [2020-10-29 04:51:26,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34da7b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:26, skipping insertion in model container [2020-10-29 04:51:26,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:51:26" (1/1) ... [2020-10-29 04:51:26,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:51:26,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:51:27,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:51:27,755 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:51:28,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:51:28,063 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:51:28,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:28 WrapperNode [2020-10-29 04:51:28,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:51:28,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:51:28,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:51:28,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:51:28,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:28" (1/1) ... [2020-10-29 04:51:28,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:28" (1/1) ... [2020-10-29 04:51:28,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:28" (1/1) ... [2020-10-29 04:51:28,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:28" (1/1) ... [2020-10-29 04:51:28,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:28" (1/1) ... [2020-10-29 04:51:28,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:28" (1/1) ... [2020-10-29 04:51:28,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:28" (1/1) ... [2020-10-29 04:51:28,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:51:28,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:51:28,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:51:28,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:51:28,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:51:28,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:51:28,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:51:28,382 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:51:28,382 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 04:51:28,382 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:51:28,382 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 04:51:28,382 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:51:28,383 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:51:28,383 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:51:28,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:51:28,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:51:28,383 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 04:51:28,384 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:51:28,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:51:28,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:51:28,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:51:28,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:51:28,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:51:28,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:51:31,406 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:51:31,407 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 04:51:31,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:51:31 BoogieIcfgContainer [2020-10-29 04:51:31,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:51:31,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:51:31,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:51:31,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:51:31,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:51:26" (1/3) ... [2020-10-29 04:51:31,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3688350f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:51:31, skipping insertion in model container [2020-10-29 04:51:31,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:28" (2/3) ... [2020-10-29 04:51:31,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3688350f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:51:31, skipping insertion in model container [2020-10-29 04:51:31,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:51:31" (3/3) ... [2020-10-29 04:51:31,418 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label05.c [2020-10-29 04:51:31,430 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:51:31,436 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:51:31,449 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:51:31,491 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:51:31,491 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:51:31,491 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:51:31,491 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:51:31,491 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:51:31,492 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:51:31,492 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:51:31,492 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:51:31,518 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 04:51:31,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-29 04:51:31,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:51:31,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:51:31,538 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:51:31,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:51:31,546 INFO L82 PathProgramCache]: Analyzing trace with hash 767443516, now seen corresponding path program 1 times [2020-10-29 04:51:31,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:51:31,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010187750] [2020-10-29 04:51:31,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:51:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:32,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:32,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:36,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:51:36,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-29 04:51:36,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:51:36,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4144 [2020-10-29 04:51:36,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:51:36,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:51:36,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:51:36,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:51:36,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-29 04:51:36,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:51:36,832 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:51:36,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:51:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:36,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:36,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:51:36,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:51:36,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:51:36,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 04:51:36,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:51:36,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:51:36,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:51:36,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:51:36,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:51:36,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:51:36,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:51:36,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010187750] [2020-10-29 04:51:36,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:51:36,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 04:51:36,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170784229] [2020-10-29 04:51:36,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:51:36,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:51:37,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:51:37,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:51:37,003 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-29 04:51:37,333 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:51:40,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:51:40,943 INFO L93 Difference]: Finished difference Result 889 states and 1542 transitions. [2020-10-29 04:51:40,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:51:40,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2020-10-29 04:51:40,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:51:40,980 INFO L225 Difference]: With dead ends: 889 [2020-10-29 04:51:40,980 INFO L226 Difference]: Without dead ends: 481 [2020-10-29 04:51:40,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:51:41,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-29 04:51:41,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 476. [2020-10-29 04:51:41,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-29 04:51:41,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 729 transitions. [2020-10-29 04:51:41,131 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 729 transitions. Word has length 165 [2020-10-29 04:51:41,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:51:41,133 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 729 transitions. [2020-10-29 04:51:41,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:51:41,133 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 729 transitions. [2020-10-29 04:51:41,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-29 04:51:41,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:51:41,141 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:51:41,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:51:41,142 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:51:41,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:51:41,143 INFO L82 PathProgramCache]: Analyzing trace with hash -799356245, now seen corresponding path program 1 times [2020-10-29 04:51:41,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:51:41,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707304885] [2020-10-29 04:51:41,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:51:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:41,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:41,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:43,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:44,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:51:44,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-29 04:51:44,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:51:44,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2988 [2020-10-29 04:51:44,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:51:44,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:51:44,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:51:44,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:51:44,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-29 04:51:44,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:51:44,650 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:51:44,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:51:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:44,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:44,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:51:44,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:51:44,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:51:44,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:51:44,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:51:44,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:51:44,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:51:44,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:51:44,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:51:44,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 04:51:44,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:51:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:44,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:44,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:51:44,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:51:44,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:51:44,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 04:51:44,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:51:44,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:51:44,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:51:44,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:51:44,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:51:44,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:51:44,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:51:44,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707304885] [2020-10-29 04:51:44,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:51:44,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:51:44,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582231482] [2020-10-29 04:51:44,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:51:44,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:51:44,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:51:44,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:51:44,948 INFO L87 Difference]: Start difference. First operand 476 states and 729 transitions. Second operand 5 states. [2020-10-29 04:51:45,395 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:51:49,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:51:49,107 INFO L93 Difference]: Finished difference Result 1384 states and 2149 transitions. [2020-10-29 04:51:49,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:51:49,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-29 04:51:49,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:51:49,116 INFO L225 Difference]: With dead ends: 1384 [2020-10-29 04:51:49,116 INFO L226 Difference]: Without dead ends: 914 [2020-10-29 04:51:49,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:51:49,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2020-10-29 04:51:49,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 903. [2020-10-29 04:51:49,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2020-10-29 04:51:49,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1331 transitions. [2020-10-29 04:51:49,181 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1331 transitions. Word has length 174 [2020-10-29 04:51:49,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:51:49,183 INFO L481 AbstractCegarLoop]: Abstraction has 903 states and 1331 transitions. [2020-10-29 04:51:49,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:51:49,183 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1331 transitions. [2020-10-29 04:51:49,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-29 04:51:49,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:51:49,192 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:51:49,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:51:49,192 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:51:49,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:51:49,196 INFO L82 PathProgramCache]: Analyzing trace with hash 66555519, now seen corresponding path program 1 times [2020-10-29 04:51:49,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:51:49,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37737666] [2020-10-29 04:51:49,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:51:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:49,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:49,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:49,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:49,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:50,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:52,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:52,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:53,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:54,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:51:54,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-29 04:51:54,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:51:54,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-29 04:51:54,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:51:54,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:51:54,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:51:54,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 04:51:54,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-29 04:51:54,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:51:54,714 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:51:54,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:51:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:54,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:54,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:51:54,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:51:54,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:51:54,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 04:51:54,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:51:54,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:51:54,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:51:54,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:51:54,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:51:54,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:51:54,887 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:51:54,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:51:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:54,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:54,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:51:54,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:51:54,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:51:54,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:51:54,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:51:54,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:51:54,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:51:54,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:51:54,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:51:54,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:51:54,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 04:51:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:54,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:54,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:54,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:51:54,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:51:54,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:51:54,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 04:51:54,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:51:54,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:51:54,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:51:54,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:51:54,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:51:54,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:51:55,042 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 04:51:55,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37737666] [2020-10-29 04:51:55,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:51:55,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:51:55,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071675489] [2020-10-29 04:51:55,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:51:55,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:51:55,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:51:55,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:51:55,053 INFO L87 Difference]: Start difference. First operand 903 states and 1331 transitions. Second operand 5 states. [2020-10-29 04:51:55,544 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:51:58,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:51:58,727 INFO L93 Difference]: Finished difference Result 2646 states and 3932 transitions. [2020-10-29 04:51:58,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:51:58,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-29 04:51:58,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:51:58,739 INFO L225 Difference]: With dead ends: 2646 [2020-10-29 04:51:58,739 INFO L226 Difference]: Without dead ends: 906 [2020-10-29 04:51:58,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:51:58,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2020-10-29 04:51:58,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 902. [2020-10-29 04:51:58,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 902 states. [2020-10-29 04:51:58,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1329 transitions. [2020-10-29 04:51:58,796 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1329 transitions. Word has length 184 [2020-10-29 04:51:58,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:51:58,796 INFO L481 AbstractCegarLoop]: Abstraction has 902 states and 1329 transitions. [2020-10-29 04:51:58,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:51:58,797 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1329 transitions. [2020-10-29 04:51:58,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-29 04:51:58,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:51:58,801 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:51:58,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:51:58,802 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:51:58,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:51:58,802 INFO L82 PathProgramCache]: Analyzing trace with hash -672921985, now seen corresponding path program 1 times [2020-10-29 04:51:58,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:51:58,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923668451] [2020-10-29 04:51:58,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:51:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:51:58,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:51:59,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:00,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:00,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:00,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 04:52:00,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:52:00,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2146 [2020-10-29 04:52:00,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:00,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:00,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:00,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 04:52:01,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-29 04:52:01,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 04:52:01,374 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:01,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:01,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:01,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:01,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:01,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:01,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:52:01,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:01,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:01,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:01,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:01,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:01,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:52:01,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:01,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:01,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:01,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 04:52:01,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:01,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 04:52:01,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:01,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:01,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:01,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:01,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 04:52:01,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:52:01,651 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:52:01,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923668451] [2020-10-29 04:52:01,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:01,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:52:01,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332708503] [2020-10-29 04:52:01,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:52:01,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:01,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:52:01,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:52:01,654 INFO L87 Difference]: Start difference. First operand 902 states and 1329 transitions. Second operand 5 states. [2020-10-29 04:52:01,934 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:52:04,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:04,567 INFO L93 Difference]: Finished difference Result 2654 states and 3980 transitions. [2020-10-29 04:52:04,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:52:04,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-29 04:52:04,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:04,580 INFO L225 Difference]: With dead ends: 2654 [2020-10-29 04:52:04,581 INFO L226 Difference]: Without dead ends: 1758 [2020-10-29 04:52:04,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:52:04,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2020-10-29 04:52:04,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1751. [2020-10-29 04:52:04,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1751 states. [2020-10-29 04:52:04,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2482 transitions. [2020-10-29 04:52:04,657 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2482 transitions. Word has length 184 [2020-10-29 04:52:04,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:04,658 INFO L481 AbstractCegarLoop]: Abstraction has 1751 states and 2482 transitions. [2020-10-29 04:52:04,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:52:04,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2482 transitions. [2020-10-29 04:52:04,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-29 04:52:04,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:04,666 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:52:04,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:52:04,667 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:04,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:04,667 INFO L82 PathProgramCache]: Analyzing trace with hash 2058549958, now seen corresponding path program 1 times [2020-10-29 04:52:04,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:04,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732532120] [2020-10-29 04:52:04,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:04,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:04,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:06,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:09,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:09,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-29 04:52:09,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:52:09,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-29 04:52:09,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:09,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:09,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:09,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 04:52:09,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-29 04:52:09,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 04:52:10,135 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:10,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:10,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:10,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:10,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:10,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:10,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:52:10,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:10,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:10,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:10,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:10,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:10,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:10,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:10,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:52:10,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:10,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:52:10,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:10,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:10,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:10,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:10,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:10,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:10,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:52:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:10,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:10,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:10,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 04:52:10,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:10,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 04:52:10,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:10,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:10,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:10,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:10,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 04:52:10,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:10,451 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 04:52:10,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732532120] [2020-10-29 04:52:10,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:10,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:52:10,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019832503] [2020-10-29 04:52:10,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:52:10,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:10,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:52:10,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:52:10,454 INFO L87 Difference]: Start difference. First operand 1751 states and 2482 transitions. Second operand 5 states. [2020-10-29 04:52:10,731 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:52:13,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:13,785 INFO L93 Difference]: Finished difference Result 5175 states and 7478 transitions. [2020-10-29 04:52:13,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:52:13,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-10-29 04:52:13,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:13,813 INFO L225 Difference]: With dead ends: 5175 [2020-10-29 04:52:13,813 INFO L226 Difference]: Without dead ends: 3430 [2020-10-29 04:52:13,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:52:13,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3430 states. [2020-10-29 04:52:13,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3430 to 3423. [2020-10-29 04:52:13,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3423 states. [2020-10-29 04:52:13,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3423 states to 3423 states and 4917 transitions. [2020-10-29 04:52:13,951 INFO L78 Accepts]: Start accepts. Automaton has 3423 states and 4917 transitions. Word has length 200 [2020-10-29 04:52:13,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:13,951 INFO L481 AbstractCegarLoop]: Abstraction has 3423 states and 4917 transitions. [2020-10-29 04:52:13,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:52:13,952 INFO L276 IsEmpty]: Start isEmpty. Operand 3423 states and 4917 transitions. [2020-10-29 04:52:13,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-29 04:52:13,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:13,963 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:52:13,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:52:13,964 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:13,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:13,964 INFO L82 PathProgramCache]: Analyzing trace with hash -693350570, now seen corresponding path program 1 times [2020-10-29 04:52:13,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:13,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028117018] [2020-10-29 04:52:13,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:14,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:14,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:14,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:18,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:18,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:19,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:19,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 04:52:19,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:52:19,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-29 04:52:19,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:19,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:19,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:19,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 04:52:19,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-29 04:52:19,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:19,363 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:19,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:19,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:19,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:19,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:19,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:19,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:52:19,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:19,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:19,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:19,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:19,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:19,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:19,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:19,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:19,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:19,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:52:19,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:19,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 04:52:19,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:19,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:19,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:19,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:19,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:19,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:19,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:52:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:19,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:19,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:19,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 04:52:19,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:19,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 04:52:19,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:19,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:19,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:19,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:19,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:19,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:19,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 04:52:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:19,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:19,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:19,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:52:19,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:19,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 04:52:19,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:19,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:19,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:19,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:19,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 04:52:19,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:19,822 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 61 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-29 04:52:19,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028117018] [2020-10-29 04:52:19,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:19,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:52:19,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226213046] [2020-10-29 04:52:19,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:52:19,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:19,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:52:19,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:52:19,825 INFO L87 Difference]: Start difference. First operand 3423 states and 4917 transitions. Second operand 5 states. [2020-10-29 04:52:20,229 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 04:52:23,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:23,669 INFO L93 Difference]: Finished difference Result 10211 states and 15079 transitions. [2020-10-29 04:52:23,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:52:23,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 232 [2020-10-29 04:52:23,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:23,715 INFO L225 Difference]: With dead ends: 10211 [2020-10-29 04:52:23,716 INFO L226 Difference]: Without dead ends: 6794 [2020-10-29 04:52:23,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:52:23,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6794 states. [2020-10-29 04:52:23,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6794 to 6773. [2020-10-29 04:52:23,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6773 states. [2020-10-29 04:52:23,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6773 states to 6773 states and 9589 transitions. [2020-10-29 04:52:23,995 INFO L78 Accepts]: Start accepts. Automaton has 6773 states and 9589 transitions. Word has length 232 [2020-10-29 04:52:23,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:23,996 INFO L481 AbstractCegarLoop]: Abstraction has 6773 states and 9589 transitions. [2020-10-29 04:52:23,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:52:23,996 INFO L276 IsEmpty]: Start isEmpty. Operand 6773 states and 9589 transitions. [2020-10-29 04:52:24,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-29 04:52:24,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:24,020 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:52:24,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:52:24,020 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:24,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:24,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1714279359, now seen corresponding path program 1 times [2020-10-29 04:52:24,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:24,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649765849] [2020-10-29 04:52:24,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:24,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:24,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:26,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:26,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 04:52:26,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:52:26,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2061 [2020-10-29 04:52:26,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:26,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-29 04:52:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-29 04:52:26,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:26,462 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:26,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:26,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:26,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:26,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:26,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:26,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:52:26,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:26,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:26,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:26,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:26,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:26,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:26,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:26,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:26,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:26,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 04:52:26,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:26,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 04:52:26,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:26,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:26,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:26,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:26,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 04:52:26,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:26,802 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 82 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:52:26,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649765849] [2020-10-29 04:52:26,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:26,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:52:26,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338584511] [2020-10-29 04:52:26,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:52:26,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:26,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:52:26,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:52:26,805 INFO L87 Difference]: Start difference. First operand 6773 states and 9589 transitions. Second operand 5 states. [2020-10-29 04:52:27,064 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:52:30,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:30,529 INFO L93 Difference]: Finished difference Result 19013 states and 27545 transitions. [2020-10-29 04:52:30,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:52:30,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2020-10-29 04:52:30,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:30,619 INFO L225 Difference]: With dead ends: 19013 [2020-10-29 04:52:30,619 INFO L226 Difference]: Without dead ends: 12246 [2020-10-29 04:52:30,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:52:30,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12246 states. [2020-10-29 04:52:31,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12246 to 12220. [2020-10-29 04:52:31,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12220 states. [2020-10-29 04:52:31,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12220 states to 12220 states and 17725 transitions. [2020-10-29 04:52:31,110 INFO L78 Accepts]: Start accepts. Automaton has 12220 states and 17725 transitions. Word has length 251 [2020-10-29 04:52:31,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:31,111 INFO L481 AbstractCegarLoop]: Abstraction has 12220 states and 17725 transitions. [2020-10-29 04:52:31,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:52:31,111 INFO L276 IsEmpty]: Start isEmpty. Operand 12220 states and 17725 transitions. [2020-10-29 04:52:31,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-29 04:52:31,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:31,157 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:52:31,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:52:31,157 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:31,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:31,158 INFO L82 PathProgramCache]: Analyzing trace with hash -984347785, now seen corresponding path program 1 times [2020-10-29 04:52:31,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:31,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925147023] [2020-10-29 04:52:31,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:31,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:31,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:36,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:36,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-29 04:52:36,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:52:36,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 04:52:36,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:36,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:36,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:52:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:52:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-29 04:52:36,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:36,574 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:36,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:36,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:36,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:36,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:36,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:36,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 04:52:36,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:36,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:36,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:52:36,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:36,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:36,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:37,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:37,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 04:52:37,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:37,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-29 04:52:37,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:37,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:37,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:37,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:52:37,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 04:52:37,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:52:37,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925147023] [2020-10-29 04:52:37,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:52:37,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 04:52:37,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750831344] [2020-10-29 04:52:37,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:52:37,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:37,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:52:37,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:52:37,585 INFO L87 Difference]: Start difference. First operand 12220 states and 17725 transitions. Second operand 7 states. [2020-10-29 04:52:37,864 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:52:38,428 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 04:52:41,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:41,995 INFO L93 Difference]: Finished difference Result 29398 states and 43632 transitions. [2020-10-29 04:52:41,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:52:41,996 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 295 [2020-10-29 04:52:41,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:42,088 INFO L225 Difference]: With dead ends: 29398 [2020-10-29 04:52:42,089 INFO L226 Difference]: Without dead ends: 17184 [2020-10-29 04:52:42,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:52:42,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17184 states. [2020-10-29 04:52:42,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17184 to 17156. [2020-10-29 04:52:42,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17156 states. [2020-10-29 04:52:42,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17156 states to 17156 states and 25201 transitions. [2020-10-29 04:52:42,900 INFO L78 Accepts]: Start accepts. Automaton has 17156 states and 25201 transitions. Word has length 295 [2020-10-29 04:52:42,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:42,901 INFO L481 AbstractCegarLoop]: Abstraction has 17156 states and 25201 transitions. [2020-10-29 04:52:42,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:52:42,901 INFO L276 IsEmpty]: Start isEmpty. Operand 17156 states and 25201 transitions. [2020-10-29 04:52:42,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-29 04:52:42,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:42,966 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:52:42,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:52:42,967 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:42,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:42,968 INFO L82 PathProgramCache]: Analyzing trace with hash -185893910, now seen corresponding path program 1 times [2020-10-29 04:52:42,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:42,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389130444] [2020-10-29 04:52:42,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:43,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:43,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:45,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:45,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-29 04:52:45,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:52:45,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2332 [2020-10-29 04:52:45,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:45,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:52:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 04:52:45,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:45,685 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:45,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:45,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:45,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:45,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:45,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:45,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:52:45,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:45,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:45,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:45,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:45,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:45,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:45,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:45,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:45,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:45,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:52:45,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:45,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:52:45,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:45,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:45,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:45,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:45,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:52:45,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:45,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 04:52:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:45,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:46,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:46,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 04:52:46,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:46,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-29 04:52:46,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:46,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:46,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:46,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:52:46,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 04:52:46,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:46,326 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 141 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:52:46,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389130444] [2020-10-29 04:52:46,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:46,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:52:46,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145367286] [2020-10-29 04:52:46,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:52:46,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:46,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:52:46,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:52:46,328 INFO L87 Difference]: Start difference. First operand 17156 states and 25201 transitions. Second operand 7 states. [2020-10-29 04:52:46,575 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:52:47,003 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:52:50,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:52:50,477 INFO L93 Difference]: Finished difference Result 42120 states and 63401 transitions. [2020-10-29 04:52:50,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:52:50,478 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 306 [2020-10-29 04:52:50,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:52:50,609 INFO L225 Difference]: With dead ends: 42120 [2020-10-29 04:52:50,609 INFO L226 Difference]: Without dead ends: 24970 [2020-10-29 04:52:50,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:52:50,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24970 states. [2020-10-29 04:52:51,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24970 to 24838. [2020-10-29 04:52:51,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24838 states. [2020-10-29 04:52:51,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24838 states to 24838 states and 34276 transitions. [2020-10-29 04:52:51,454 INFO L78 Accepts]: Start accepts. Automaton has 24838 states and 34276 transitions. Word has length 306 [2020-10-29 04:52:51,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:52:51,455 INFO L481 AbstractCegarLoop]: Abstraction has 24838 states and 34276 transitions. [2020-10-29 04:52:51,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:52:51,455 INFO L276 IsEmpty]: Start isEmpty. Operand 24838 states and 34276 transitions. [2020-10-29 04:52:51,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-29 04:52:51,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:52:51,537 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:52:51,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:52:51,538 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:52:51,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:52:51,539 INFO L82 PathProgramCache]: Analyzing trace with hash 496693950, now seen corresponding path program 1 times [2020-10-29 04:52:51,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:52:51,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957391749] [2020-10-29 04:52:51,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:52:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:51,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:52,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:54,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:54,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-29 04:52:54,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:52:54,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2445 [2020-10-29 04:52:54,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:54,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:54,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:54,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 04:52:54,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 04:52:54,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:54,498 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:52:54,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:52:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:54,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:54,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:54,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:52:54,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:54,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:52:54,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:54,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:54,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:52:54,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:54,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:52:54,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:54,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:52:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:54,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:54,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:54,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:52:54,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:54,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 04:52:54,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:54,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:54,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:52:54,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:52:54,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 04:52:54,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:54,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:52:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:52:54,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:52:55,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:52:55,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 04:52:55,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:52:55,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-29 04:52:55,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:52:55,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:52:55,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:52:55,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:52:55,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 04:52:55,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:52:55,841 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:52:55,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957391749] [2020-10-29 04:52:55,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:52:55,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:52:55,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109837045] [2020-10-29 04:52:55,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:52:55,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:52:55,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:52:55,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:52:55,844 INFO L87 Difference]: Start difference. First operand 24838 states and 34276 transitions. Second operand 7 states. [2020-10-29 04:52:56,386 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:52:57,795 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 04:53:01,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:01,019 INFO L93 Difference]: Finished difference Result 54330 states and 81980 transitions. [2020-10-29 04:53:01,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:53:01,020 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 316 [2020-10-29 04:53:01,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:01,199 INFO L225 Difference]: With dead ends: 54330 [2020-10-29 04:53:01,199 INFO L226 Difference]: Without dead ends: 29498 [2020-10-29 04:53:01,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:53:01,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29498 states. [2020-10-29 04:53:02,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29498 to 28848. [2020-10-29 04:53:02,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28848 states. [2020-10-29 04:53:02,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28848 states to 28848 states and 38647 transitions. [2020-10-29 04:53:02,340 INFO L78 Accepts]: Start accepts. Automaton has 28848 states and 38647 transitions. Word has length 316 [2020-10-29 04:53:02,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:02,341 INFO L481 AbstractCegarLoop]: Abstraction has 28848 states and 38647 transitions. [2020-10-29 04:53:02,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:53:02,341 INFO L276 IsEmpty]: Start isEmpty. Operand 28848 states and 38647 transitions. [2020-10-29 04:53:02,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-29 04:53:02,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:02,415 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:53:02,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:53:02,416 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:02,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:02,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1863260409, now seen corresponding path program 1 times [2020-10-29 04:53:02,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:02,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143702661] [2020-10-29 04:53:02,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:02,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:02,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:03,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:07,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:07,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-29 04:53:07,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:53:07,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-29 04:53:07,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:07,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:07,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:07,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-29 04:53:07,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 04:53:07,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:07,863 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:07,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:07,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:07,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:07,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:07,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:07,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:53:07,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:07,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:07,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:07,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:07,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:07,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:07,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:08,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:08,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:08,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:53:08,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:08,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:53:08,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:08,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:08,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:08,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:08,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:08,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:08,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:53:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:08,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:08,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:08,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 04:53:08,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:08,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 04:53:08,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:08,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:08,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:08,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:08,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:53:08,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:08,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 04:53:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:08,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:08,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:08,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 04:53:08,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:08,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-29 04:53:08,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:08,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:08,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:08,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:53:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 04:53:08,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:08,770 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 04:53:08,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143702661] [2020-10-29 04:53:08,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:53:08,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:53:08,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775954808] [2020-10-29 04:53:08,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:53:08,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:08,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:53:08,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:53:08,772 INFO L87 Difference]: Start difference. First operand 28848 states and 38647 transitions. Second operand 8 states. [2020-10-29 04:53:09,054 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 04:53:09,471 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:53:10,829 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 04:53:14,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:14,249 INFO L93 Difference]: Finished difference Result 71797 states and 96798 transitions. [2020-10-29 04:53:14,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:53:14,249 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 332 [2020-10-29 04:53:14,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:14,424 INFO L225 Difference]: With dead ends: 71797 [2020-10-29 04:53:14,424 INFO L226 Difference]: Without dead ends: 42955 [2020-10-29 04:53:14,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:53:14,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42955 states. [2020-10-29 04:53:15,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42955 to 42893. [2020-10-29 04:53:15,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42893 states. [2020-10-29 04:53:15,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42893 states to 42893 states and 55148 transitions. [2020-10-29 04:53:15,568 INFO L78 Accepts]: Start accepts. Automaton has 42893 states and 55148 transitions. Word has length 332 [2020-10-29 04:53:15,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:15,569 INFO L481 AbstractCegarLoop]: Abstraction has 42893 states and 55148 transitions. [2020-10-29 04:53:15,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:53:15,569 INFO L276 IsEmpty]: Start isEmpty. Operand 42893 states and 55148 transitions. [2020-10-29 04:53:15,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-29 04:53:15,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:15,648 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:53:15,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:53:15,649 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:15,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:15,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1034679825, now seen corresponding path program 1 times [2020-10-29 04:53:15,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:15,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270773763] [2020-10-29 04:53:15,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:15,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:15,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:16,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:19,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:20,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:20,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-29 04:53:20,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:53:20,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-29 04:53:20,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:20,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:20,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:20,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-29 04:53:20,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 04:53:20,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:21,077 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:21,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:21,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:21,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:21,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:21,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:21,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:53:21,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:21,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:21,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:21,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:21,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:21,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:21,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:21,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:21,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:21,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:53:21,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:21,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:53:21,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:21,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:21,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:21,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:21,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:21,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:21,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:53:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:21,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:21,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:21,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:53:21,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:21,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:53:21,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:21,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:21,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:21,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:21,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:21,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:21,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:53:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:21,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:21,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:21,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:53:21,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:21,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 04:53:21,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:21,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:21,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:21,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:21,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 04:53:21,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:21,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 04:53:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:21,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:21,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:21,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 04:53:21,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:21,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-29 04:53:21,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:21,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:21,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:21,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:53:21,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 04:53:21,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:21,778 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-29 04:53:21,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270773763] [2020-10-29 04:53:21,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:53:21,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:53:21,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376453923] [2020-10-29 04:53:21,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:53:21,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:21,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:53:21,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:53:21,782 INFO L87 Difference]: Start difference. First operand 42893 states and 55148 transitions. Second operand 7 states. [2020-10-29 04:53:22,146 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 04:53:22,541 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:53:27,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:27,842 INFO L93 Difference]: Finished difference Result 89616 states and 122356 transitions. [2020-10-29 04:53:27,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:53:27,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 336 [2020-10-29 04:53:27,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:28,082 INFO L225 Difference]: With dead ends: 89616 [2020-10-29 04:53:28,083 INFO L226 Difference]: Without dead ends: 46729 [2020-10-29 04:53:28,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:53:28,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46729 states. [2020-10-29 04:53:29,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46729 to 45843. [2020-10-29 04:53:29,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45843 states. [2020-10-29 04:53:29,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45843 states to 45843 states and 58680 transitions. [2020-10-29 04:53:29,881 INFO L78 Accepts]: Start accepts. Automaton has 45843 states and 58680 transitions. Word has length 336 [2020-10-29 04:53:29,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:29,882 INFO L481 AbstractCegarLoop]: Abstraction has 45843 states and 58680 transitions. [2020-10-29 04:53:29,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:53:29,882 INFO L276 IsEmpty]: Start isEmpty. Operand 45843 states and 58680 transitions. [2020-10-29 04:53:30,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-29 04:53:30,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:30,262 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:53:30,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:53:30,263 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:30,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:30,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1879242630, now seen corresponding path program 1 times [2020-10-29 04:53:30,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:30,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602370718] [2020-10-29 04:53:30,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:30,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:30,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:35,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:35,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-29 04:53:35,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:53:35,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 04:53:35,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:35,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:35,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:53:35,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:53:35,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-29 04:53:35,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:35,638 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:35,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:35,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:35,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:35,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:35,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:35,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:53:35,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:35,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:35,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:35,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:35,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:35,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:35,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:35,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:35,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:35,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:53:35,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:35,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:53:35,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:35,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:35,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:35,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:35,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:53:35,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:35,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 04:53:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:35,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:35,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:35,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:53:35,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:35,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 04:53:35,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:35,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:35,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:53:35,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:53:35,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:53:35,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:35,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 04:53:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:36,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:36,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:36,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 04:53:36,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:36,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-29 04:53:36,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:36,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:36,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:36,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:53:36,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 04:53:36,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:36,585 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 207 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 04:53:36,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602370718] [2020-10-29 04:53:36,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:53:36,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:53:36,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679030809] [2020-10-29 04:53:36,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:53:36,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:36,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:53:36,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:53:36,588 INFO L87 Difference]: Start difference. First operand 45843 states and 58680 transitions. Second operand 10 states. [2020-10-29 04:53:36,871 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:53:37,658 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 160 [2020-10-29 04:53:38,170 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 04:53:40,029 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:53:42,160 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 162 [2020-10-29 04:53:43,581 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:53:46,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:53:46,154 INFO L93 Difference]: Finished difference Result 98177 states and 138067 transitions. [2020-10-29 04:53:46,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 04:53:46,154 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 338 [2020-10-29 04:53:46,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:53:46,476 INFO L225 Difference]: With dead ends: 98177 [2020-10-29 04:53:46,476 INFO L226 Difference]: Without dead ends: 54022 [2020-10-29 04:53:46,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=180, Invalid=522, Unknown=0, NotChecked=0, Total=702 [2020-10-29 04:53:46,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54022 states. [2020-10-29 04:53:48,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54022 to 52512. [2020-10-29 04:53:48,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52512 states. [2020-10-29 04:53:48,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52512 states to 52512 states and 65901 transitions. [2020-10-29 04:53:48,886 INFO L78 Accepts]: Start accepts. Automaton has 52512 states and 65901 transitions. Word has length 338 [2020-10-29 04:53:48,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:53:48,887 INFO L481 AbstractCegarLoop]: Abstraction has 52512 states and 65901 transitions. [2020-10-29 04:53:48,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:53:48,887 INFO L276 IsEmpty]: Start isEmpty. Operand 52512 states and 65901 transitions. [2020-10-29 04:53:49,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-29 04:53:49,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:53:49,205 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:53:49,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 04:53:49,206 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:53:49,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:53:49,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1920407047, now seen corresponding path program 1 times [2020-10-29 04:53:49,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:53:49,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618557554] [2020-10-29 04:53:49,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:53:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:49,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:49,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:49,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:49,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:49,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:54,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:54,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-29 04:53:54,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:53:54,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 04:53:54,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:54,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-29 04:53:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 04:53:54,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:54,610 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:53:54,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:53:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:54,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:54,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:54,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:53:54,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:54,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:53:54,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:54,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:54,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:54,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:54,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:54,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:54,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:53:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:54,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:54,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:54,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:53:54,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:54,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:53:54,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:54,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:54,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:54,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:53:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:54,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:54,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:54,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:53:54,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:54,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:53:54,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:54,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:54,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:53:54,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:54,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:53:54,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:54,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:53:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:54,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:54,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:54,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:53:54,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:54,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 04:53:54,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:54,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:54,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:53:54,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:53:54,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:53:54,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:54,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 04:53:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:53:54,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:53:55,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:53:55,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 04:53:55,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:53:55,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-29 04:53:55,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:53:55,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:53:55,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:53:55,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:53:55,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 04:53:55,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:53:55,740 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-29 04:53:55,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618557554] [2020-10-29 04:53:55,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:53:55,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:53:55,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357577827] [2020-10-29 04:53:55,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:53:55,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:53:55,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:53:55,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:53:55,743 INFO L87 Difference]: Start difference. First operand 52512 states and 65901 transitions. Second operand 7 states. [2020-10-29 04:53:56,253 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 04:53:56,772 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:54:02,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:02,105 INFO L93 Difference]: Finished difference Result 110844 states and 146686 transitions. [2020-10-29 04:54:02,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:54:02,105 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 343 [2020-10-29 04:54:02,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:02,353 INFO L225 Difference]: With dead ends: 110844 [2020-10-29 04:54:02,354 INFO L226 Difference]: Without dead ends: 60028 [2020-10-29 04:54:02,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:54:02,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60028 states. [2020-10-29 04:54:04,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60028 to 58200. [2020-10-29 04:54:04,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58200 states. [2020-10-29 04:54:04,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58200 states to 58200 states and 72762 transitions. [2020-10-29 04:54:04,927 INFO L78 Accepts]: Start accepts. Automaton has 58200 states and 72762 transitions. Word has length 343 [2020-10-29 04:54:04,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:04,929 INFO L481 AbstractCegarLoop]: Abstraction has 58200 states and 72762 transitions. [2020-10-29 04:54:04,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:54:04,929 INFO L276 IsEmpty]: Start isEmpty. Operand 58200 states and 72762 transitions. [2020-10-29 04:54:05,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-10-29 04:54:05,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:05,028 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:54:05,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 04:54:05,029 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:05,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:05,029 INFO L82 PathProgramCache]: Analyzing trace with hash 996124782, now seen corresponding path program 1 times [2020-10-29 04:54:05,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:05,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590535620] [2020-10-29 04:54:05,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:05,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:06,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:06,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-29 04:54:06,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:06,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1318 [2020-10-29 04:54:06,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:06,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:06,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:54:06,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:54:06,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 04:54:06,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:06,716 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:06,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:06,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:06,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:06,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:06,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:06,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:54:06,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:06,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:06,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:06,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:06,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:54:06,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:06,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:06,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:06,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:06,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 04:54:06,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:06,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 04:54:06,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:06,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 04:54:06,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:07,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 04:54:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:07,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:07,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:07,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 04:54:07,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:07,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 04:54:07,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:07,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-29 04:54:07,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:07,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:07,380 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 186 proven. 59 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 04:54:07,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590535620] [2020-10-29 04:54:07,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:07,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:54:07,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458181572] [2020-10-29 04:54:07,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:54:07,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:07,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:54:07,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:54:07,382 INFO L87 Difference]: Start difference. First operand 58200 states and 72762 transitions. Second operand 7 states. [2020-10-29 04:54:07,663 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:54:10,263 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 04:54:12,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:12,253 INFO L93 Difference]: Finished difference Result 120686 states and 151432 transitions. [2020-10-29 04:54:12,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:54:12,254 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 359 [2020-10-29 04:54:12,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:12,405 INFO L225 Difference]: With dead ends: 120686 [2020-10-29 04:54:12,405 INFO L226 Difference]: Without dead ends: 64200 [2020-10-29 04:54:12,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:54:12,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64200 states. [2020-10-29 04:54:14,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64200 to 63845. [2020-10-29 04:54:14,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63845 states. [2020-10-29 04:54:14,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63845 states to 63845 states and 79591 transitions. [2020-10-29 04:54:14,282 INFO L78 Accepts]: Start accepts. Automaton has 63845 states and 79591 transitions. Word has length 359 [2020-10-29 04:54:14,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:14,282 INFO L481 AbstractCegarLoop]: Abstraction has 63845 states and 79591 transitions. [2020-10-29 04:54:14,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:54:14,283 INFO L276 IsEmpty]: Start isEmpty. Operand 63845 states and 79591 transitions. [2020-10-29 04:54:14,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-29 04:54:14,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:14,359 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:54:14,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 04:54:14,360 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:14,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:14,360 INFO L82 PathProgramCache]: Analyzing trace with hash -461766431, now seen corresponding path program 1 times [2020-10-29 04:54:14,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:14,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586087864] [2020-10-29 04:54:14,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:14,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:14,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:16,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:16,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-29 04:54:16,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:54:16,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2073 [2020-10-29 04:54:16,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:16,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:16,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:16,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:54:16,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 04:54:16,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:16,855 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:16,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:16,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:16,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:16,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:16,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:16,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:54:16,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:16,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:16,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:16,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:16,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:16,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:16,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:16,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:16,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:16,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:54:16,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:16,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 04:54:16,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:16,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:16,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:16,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:16,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:54:16,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:17,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 04:54:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:17,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:17,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:17,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 04:54:17,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:17,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 04:54:17,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:17,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:17,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:17,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:17,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 04:54:17,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:17,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 04:54:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:17,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:17,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:17,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 04:54:17,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:17,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 04:54:17,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:17,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:17,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:17,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-29 04:54:17,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:17,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:17,601 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 206 proven. 63 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 04:54:17,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586087864] [2020-10-29 04:54:17,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:17,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:54:17,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863246268] [2020-10-29 04:54:17,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:54:17,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:17,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:54:17,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:54:17,603 INFO L87 Difference]: Start difference. First operand 63845 states and 79591 transitions. Second operand 7 states. [2020-10-29 04:54:18,020 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:54:18,422 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 04:54:22,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:22,939 INFO L93 Difference]: Finished difference Result 128958 states and 169051 transitions. [2020-10-29 04:54:22,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:54:22,940 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 370 [2020-10-29 04:54:22,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:23,376 INFO L225 Difference]: With dead ends: 128958 [2020-10-29 04:54:23,376 INFO L226 Difference]: Without dead ends: 65967 [2020-10-29 04:54:23,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:54:23,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65967 states. [2020-10-29 04:54:25,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65967 to 64691. [2020-10-29 04:54:25,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64691 states. [2020-10-29 04:54:25,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64691 states to 64691 states and 80251 transitions. [2020-10-29 04:54:25,473 INFO L78 Accepts]: Start accepts. Automaton has 64691 states and 80251 transitions. Word has length 370 [2020-10-29 04:54:25,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:25,473 INFO L481 AbstractCegarLoop]: Abstraction has 64691 states and 80251 transitions. [2020-10-29 04:54:25,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:54:25,473 INFO L276 IsEmpty]: Start isEmpty. Operand 64691 states and 80251 transitions. [2020-10-29 04:54:25,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-10-29 04:54:25,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:25,552 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:54:25,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 04:54:25,552 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:25,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:25,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1451086005, now seen corresponding path program 1 times [2020-10-29 04:54:25,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:25,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432776102] [2020-10-29 04:54:25,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:25,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:25,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:26,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:26,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:30,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:30,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:30,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-29 04:54:30,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:54:30,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 04:54:30,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:30,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:30,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:54:30,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 04:54:30,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-29 04:54:30,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:30,948 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:54:30,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:54:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:30,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:30,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:30,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:54:30,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:30,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:54:30,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:30,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:30,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:30,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:30,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:30,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:31,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:54:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:31,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:31,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:31,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:54:31,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:31,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:54:31,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:31,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:31,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:54:31,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:31,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:54:31,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:31,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:54:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:31,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:31,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:31,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:54:31,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:31,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:54:31,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:31,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:31,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:54:31,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:54:31,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 04:54:31,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:31,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:54:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:31,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:31,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:31,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 04:54:31,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:31,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 04:54:31,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:31,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:31,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:54:31,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:31,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 04:54:31,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:31,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 04:54:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:31,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:31,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:54:31,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 04:54:31,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:54:31,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-29 04:54:31,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:54:31,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:54:31,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:54:31,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:54:31,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 04:54:31,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:54:32,527 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 323 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 04:54:32,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432776102] [2020-10-29 04:54:32,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:54:32,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:54:32,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076977123] [2020-10-29 04:54:32,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:54:32,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:54:32,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:54:32,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:54:32,530 INFO L87 Difference]: Start difference. First operand 64691 states and 80251 transitions. Second operand 10 states. [2020-10-29 04:54:32,836 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:54:33,465 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:54:35,320 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 164 [2020-10-29 04:54:38,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:54:38,338 INFO L93 Difference]: Finished difference Result 105597 states and 135552 transitions. [2020-10-29 04:54:38,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:54:38,339 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 390 [2020-10-29 04:54:38,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:54:38,459 INFO L225 Difference]: With dead ends: 105597 [2020-10-29 04:54:38,459 INFO L226 Difference]: Without dead ends: 42182 [2020-10-29 04:54:38,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:54:38,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42182 states. [2020-10-29 04:54:39,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42182 to 40908. [2020-10-29 04:54:39,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40908 states. [2020-10-29 04:54:39,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40908 states to 40908 states and 49322 transitions. [2020-10-29 04:54:39,566 INFO L78 Accepts]: Start accepts. Automaton has 40908 states and 49322 transitions. Word has length 390 [2020-10-29 04:54:39,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:54:39,566 INFO L481 AbstractCegarLoop]: Abstraction has 40908 states and 49322 transitions. [2020-10-29 04:54:39,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:54:39,566 INFO L276 IsEmpty]: Start isEmpty. Operand 40908 states and 49322 transitions. [2020-10-29 04:54:39,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2020-10-29 04:54:39,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:39,618 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:54:39,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 04:54:39,619 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:39,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:39,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1745420099, now seen corresponding path program 1 times [2020-10-29 04:54:39,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:39,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741029343] [2020-10-29 04:54:39,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:54:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:54:39,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:39,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:40,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:54:40,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking...