/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:15:33,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:15:33,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:15:33,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:15:33,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:15:33,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:15:33,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:15:33,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:15:33,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:15:33,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:15:33,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:15:33,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:15:33,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:15:33,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:15:33,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:15:33,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:15:33,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:15:33,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:15:33,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:15:33,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:15:33,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:15:33,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:15:33,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:15:33,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:15:33,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:15:33,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:15:33,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:15:33,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:15:33,441 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:15:33,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:15:33,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:15:33,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:15:33,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:15:33,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:15:33,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:15:33,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:15:33,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:15:33,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:15:33,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:15:33,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:15:33,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:15:33,460 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 18:15:33,516 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:15:33,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:15:33,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:15:33,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:15:33,522 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:15:33,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:15:33,522 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:15:33,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:15:33,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:15:33,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:15:33,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:15:33,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:15:33,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:15:33,525 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:15:33,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:15:33,525 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:15:33,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:15:33,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:15:33,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:15:33,526 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:15:33,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:15:33,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:15:33,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:15:33,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:15:33,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:15:33,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:15:33,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:15:33,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:15:33,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:15:33,528 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:15:33,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:15:33,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:15:33,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:15:33,976 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:15:33,976 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:15:33,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label41.c [2020-10-27 18:15:34,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1c2f597e/f90daee3f9f24336b02a74e3cbae344f/FLAGed491f72d [2020-10-27 18:15:34,767 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:15:34,768 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label41.c [2020-10-27 18:15:34,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1c2f597e/f90daee3f9f24336b02a74e3cbae344f/FLAGed491f72d [2020-10-27 18:15:34,981 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1c2f597e/f90daee3f9f24336b02a74e3cbae344f [2020-10-27 18:15:34,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:15:34,995 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:15:35,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:15:35,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:15:35,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:15:35,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:15:34" (1/1) ... [2020-10-27 18:15:35,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434b4690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:15:35, skipping insertion in model container [2020-10-27 18:15:35,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:15:34" (1/1) ... [2020-10-27 18:15:35,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:15:35,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:15:35,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:15:35,672 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:15:35,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:15:35,836 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:15:35,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:15:35 WrapperNode [2020-10-27 18:15:35,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:15:35,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:15:35,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:15:35,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:15:35,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:15:35" (1/1) ... [2020-10-27 18:15:35,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:15:35" (1/1) ... [2020-10-27 18:15:35,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:15:35" (1/1) ... [2020-10-27 18:15:35,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:15:35" (1/1) ... [2020-10-27 18:15:35,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:15:35" (1/1) ... [2020-10-27 18:15:35,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:15:35" (1/1) ... [2020-10-27 18:15:35,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:15:35" (1/1) ... [2020-10-27 18:15:36,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:15:36,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:15:36,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:15:36,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:15:36,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:15:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:15:36,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:15:36,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:15:36,109 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:15:36,109 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:15:36,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:15:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:15:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:15:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:15:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:15:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:15:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:15:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:15:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:15:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:15:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:15:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:15:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:15:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:15:36,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:15:37,809 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:15:37,810 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:15:37,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:15:37 BoogieIcfgContainer [2020-10-27 18:15:37,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:15:37,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:15:37,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:15:37,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:15:37,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:15:34" (1/3) ... [2020-10-27 18:15:37,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334d28d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:15:37, skipping insertion in model container [2020-10-27 18:15:37,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:15:35" (2/3) ... [2020-10-27 18:15:37,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334d28d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:15:37, skipping insertion in model container [2020-10-27 18:15:37,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:15:37" (3/3) ... [2020-10-27 18:15:37,822 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label41.c [2020-10-27 18:15:37,835 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:15:37,841 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:15:37,854 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:15:37,884 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:15:37,885 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:15:37,885 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:15:37,885 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:15:37,885 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:15:37,885 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:15:37,885 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:15:37,886 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:15:37,910 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-27 18:15:37,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-27 18:15:37,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:15:37,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:15:37,917 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:15:37,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:15:37,924 INFO L82 PathProgramCache]: Analyzing trace with hash -950974352, now seen corresponding path program 1 times [2020-10-27 18:15:37,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:15:37,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915629857] [2020-10-27 18:15:37,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:15:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:38,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:38,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:38,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 18:15:38,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:38,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-27 18:15:38,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:38,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:15:38,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:15:38,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 18:15:38,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:15:38,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:15:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:38,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:38,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:38,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:15:38,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:38,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 18:15:38,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:38,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:15:38,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:38,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:15:38,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 31 [2020-10-27 18:15:38,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:15:38,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915629857] [2020-10-27 18:15:38,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:15:38,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 18:15:38,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723679145] [2020-10-27 18:15:38,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 18:15:38,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:15:38,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 18:15:38,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 18:15:38,821 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-27 18:15:41,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:15:41,157 INFO L93 Difference]: Finished difference Result 703 states and 1246 transitions. [2020-10-27 18:15:41,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:15:41,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-27 18:15:41,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:15:41,175 INFO L225 Difference]: With dead ends: 703 [2020-10-27 18:15:41,175 INFO L226 Difference]: Without dead ends: 381 [2020-10-27 18:15:41,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:15:41,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-27 18:15:41,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 377. [2020-10-27 18:15:41,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-27 18:15:41,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 553 transitions. [2020-10-27 18:15:41,270 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 553 transitions. Word has length 14 [2020-10-27 18:15:41,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:15:41,270 INFO L481 AbstractCegarLoop]: Abstraction has 377 states and 553 transitions. [2020-10-27 18:15:41,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 18:15:41,271 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 553 transitions. [2020-10-27 18:15:41,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 18:15:41,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:15:41,275 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] [2020-10-27 18:15:41,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:15:41,275 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:15:41,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:15:41,276 INFO L82 PathProgramCache]: Analyzing trace with hash -739195396, now seen corresponding path program 1 times [2020-10-27 18:15:41,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:15:41,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804638322] [2020-10-27 18:15:41,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:15:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:41,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:41,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:42,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:42,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 18:15:42,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:15:42,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1200 [2020-10-27 18:15:42,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:42,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:15:42,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 18:15:42,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 18:15:42,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 18:15:42,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:15:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:42,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:42,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:42,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:15:42,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:42,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 18:15:42,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:42,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:42,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:42,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:42,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:42,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:15:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:42,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:42,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:42,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 18:15:42,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:42,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 18:15:42,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:42,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:15:42,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:42,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 18:15:42,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:42,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:15:42,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804638322] [2020-10-27 18:15:42,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:15:42,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:15:42,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863097667] [2020-10-27 18:15:42,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:15:42,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:15:42,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:15:42,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:15:42,842 INFO L87 Difference]: Start difference. First operand 377 states and 553 transitions. Second operand 5 states. [2020-10-27 18:15:44,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:15:44,980 INFO L93 Difference]: Finished difference Result 936 states and 1413 transitions. [2020-10-27 18:15:44,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:15:44,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-27 18:15:44,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:15:44,986 INFO L225 Difference]: With dead ends: 936 [2020-10-27 18:15:44,987 INFO L226 Difference]: Without dead ends: 565 [2020-10-27 18:15:44,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:15:44,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-27 18:15:45,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 561. [2020-10-27 18:15:45,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-10-27 18:15:45,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 746 transitions. [2020-10-27 18:15:45,060 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 746 transitions. Word has length 83 [2020-10-27 18:15:45,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:15:45,061 INFO L481 AbstractCegarLoop]: Abstraction has 561 states and 746 transitions. [2020-10-27 18:15:45,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:15:45,061 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 746 transitions. [2020-10-27 18:15:45,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 18:15:45,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:15:45,075 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:15:45,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:15:45,076 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:15:45,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:15:45,077 INFO L82 PathProgramCache]: Analyzing trace with hash -678117420, now seen corresponding path program 1 times [2020-10-27 18:15:45,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:15:45,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861113370] [2020-10-27 18:15:45,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:15:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:45,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:45,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:46,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:46,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:49,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:49,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:15:49,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:15:49,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3976 [2020-10-27 18:15:49,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:49,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:15:49,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-27 18:15:49,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 18:15:49,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:49,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:15:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:49,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:49,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:49,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:15:49,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:49,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 18:15:49,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:49,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:49,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:49,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:49,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:15:49,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:15:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:49,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:49,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:49,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 18:15:49,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:49,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 18:15:49,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:49,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:49,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:49,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:49,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:49,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 18:15:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:49,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:49,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:49,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:15:49,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:49,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-27 18:15:49,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:49,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:15:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 18:15:49,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:15:49,567 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 18:15:49,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861113370] [2020-10-27 18:15:49,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:15:49,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:15:49,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776697267] [2020-10-27 18:15:49,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:15:49,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:15:49,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:15:49,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:15:49,570 INFO L87 Difference]: Start difference. First operand 561 states and 746 transitions. Second operand 5 states. [2020-10-27 18:15:51,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:15:51,792 INFO L93 Difference]: Finished difference Result 1304 states and 1798 transitions. [2020-10-27 18:15:51,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:15:51,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-27 18:15:51,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:15:51,801 INFO L225 Difference]: With dead ends: 1304 [2020-10-27 18:15:51,801 INFO L226 Difference]: Without dead ends: 565 [2020-10-27 18:15:51,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:15:51,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-27 18:15:51,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 561. [2020-10-27 18:15:51,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-10-27 18:15:51,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 738 transitions. [2020-10-27 18:15:51,834 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 738 transitions. Word has length 166 [2020-10-27 18:15:51,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:15:51,842 INFO L481 AbstractCegarLoop]: Abstraction has 561 states and 738 transitions. [2020-10-27 18:15:51,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:15:51,842 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 738 transitions. [2020-10-27 18:15:51,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-27 18:15:51,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:15:51,852 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:15:51,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:15:51,855 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:15:51,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:15:51,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1482100804, now seen corresponding path program 1 times [2020-10-27 18:15:51,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:15:51,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081017791] [2020-10-27 18:15:51,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:15:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:51,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:52,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:52,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:52,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:55,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:55,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 18:15:55,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:15:55,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3302 [2020-10-27 18:15:55,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:55,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:15:55,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-27 18:15:55,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 18:15:55,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:55,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:15:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:55,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:55,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:55,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:15:55,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:55,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:15:55,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:55,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:55,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:55,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:55,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:15:55,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:15:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:55,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:55,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:55,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 18:15:55,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:55,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:15:55,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:55,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:15:55,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:55,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:15:55,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:55,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 18:15:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:55,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:55,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:15:55,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:15:55,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:15:55,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 18:15:55,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:15:55,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:15:55,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:15:55,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 18:15:55,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:15:55,591 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 18:15:55,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081017791] [2020-10-27 18:15:55,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:15:55,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:15:55,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997782986] [2020-10-27 18:15:55,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:15:55,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:15:55,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:15:55,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:15:55,595 INFO L87 Difference]: Start difference. First operand 561 states and 738 transitions. Second operand 5 states. [2020-10-27 18:15:57,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:15:57,737 INFO L93 Difference]: Finished difference Result 1672 states and 2225 transitions. [2020-10-27 18:15:57,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:15:57,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-10-27 18:15:57,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:15:57,745 INFO L225 Difference]: With dead ends: 1672 [2020-10-27 18:15:57,746 INFO L226 Difference]: Without dead ends: 1117 [2020-10-27 18:15:57,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:15:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2020-10-27 18:15:57,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 931. [2020-10-27 18:15:57,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 931 states. [2020-10-27 18:15:57,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1186 transitions. [2020-10-27 18:15:57,792 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1186 transitions. Word has length 178 [2020-10-27 18:15:57,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:15:57,794 INFO L481 AbstractCegarLoop]: Abstraction has 931 states and 1186 transitions. [2020-10-27 18:15:57,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:15:57,794 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1186 transitions. [2020-10-27 18:15:57,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-27 18:15:57,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:15:57,798 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:15:57,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:15:57,798 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:15:57,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:15:57,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1701752864, now seen corresponding path program 1 times [2020-10-27 18:15:57,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:15:57,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668460547] [2020-10-27 18:15:57,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:15:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:15:57,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:58,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:15:58,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:00,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:00,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-27 18:16:00,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:16:00,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3055 [2020-10-27 18:16:00,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:00,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:16:00,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-27 18:16:00,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 18:16:00,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:01,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:16:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:01,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:01,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:01,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:16:01,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:01,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:16:01,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:01,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:01,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:01,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:01,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:01,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:16:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:01,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:01,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:01,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:16:01,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:01,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-27 18:16:01,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:01,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:16:01,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:01,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-27 18:16:01,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:01,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:16:01,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668460547] [2020-10-27 18:16:01,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:16:01,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:16:01,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028316890] [2020-10-27 18:16:01,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:16:01,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:16:01,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:16:01,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:16:01,357 INFO L87 Difference]: Start difference. First operand 931 states and 1186 transitions. Second operand 6 states. [2020-10-27 18:16:04,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:16:04,506 INFO L93 Difference]: Finished difference Result 2228 states and 2918 transitions. [2020-10-27 18:16:04,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:16:04,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 193 [2020-10-27 18:16:04,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:16:04,516 INFO L225 Difference]: With dead ends: 2228 [2020-10-27 18:16:04,517 INFO L226 Difference]: Without dead ends: 1303 [2020-10-27 18:16:04,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:16:04,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2020-10-27 18:16:04,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1299. [2020-10-27 18:16:04,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-10-27 18:16:04,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1650 transitions. [2020-10-27 18:16:04,591 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1650 transitions. Word has length 193 [2020-10-27 18:16:04,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:16:04,592 INFO L481 AbstractCegarLoop]: Abstraction has 1299 states and 1650 transitions. [2020-10-27 18:16:04,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:16:04,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1650 transitions. [2020-10-27 18:16:04,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-27 18:16:04,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:16:04,597 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:16:04,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:16:04,598 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:16:04,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:16:04,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1145623240, now seen corresponding path program 1 times [2020-10-27 18:16:04,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:16:04,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052077307] [2020-10-27 18:16:04,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:16:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:04,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:04,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:06,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:08,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:08,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-27 18:16:08,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:16:08,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4028 [2020-10-27 18:16:08,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:08,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:16:08,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 277 [2020-10-27 18:16:08,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 18:16:08,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:08,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:16:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:08,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:08,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:08,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:16:08,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:08,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:16:08,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:08,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:08,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:08,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:08,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:08,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:16:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:08,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:08,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:08,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:16:08,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:08,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 18:16:08,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:08,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:08,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:08,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:08,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:08,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-27 18:16:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:09,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:09,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:09,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 18:16:09,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:09,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 18:16:09,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:09,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:16:09,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:09,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 18:16:09,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:16:09,238 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-27 18:16:09,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052077307] [2020-10-27 18:16:09,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:16:09,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:16:09,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797206903] [2020-10-27 18:16:09,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:16:09,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:16:09,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:16:09,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:16:09,243 INFO L87 Difference]: Start difference. First operand 1299 states and 1650 transitions. Second operand 6 states. [2020-10-27 18:16:12,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:16:12,612 INFO L93 Difference]: Finished difference Result 4068 states and 5338 transitions. [2020-10-27 18:16:12,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:16:12,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 279 [2020-10-27 18:16:12,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:16:12,632 INFO L225 Difference]: With dead ends: 4068 [2020-10-27 18:16:12,633 INFO L226 Difference]: Without dead ends: 2775 [2020-10-27 18:16:12,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:16:12,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2775 states. [2020-10-27 18:16:12,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2775 to 2225. [2020-10-27 18:16:12,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2225 states. [2020-10-27 18:16:12,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 2887 transitions. [2020-10-27 18:16:12,724 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 2887 transitions. Word has length 279 [2020-10-27 18:16:12,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:16:12,724 INFO L481 AbstractCegarLoop]: Abstraction has 2225 states and 2887 transitions. [2020-10-27 18:16:12,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:16:12,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 2887 transitions. [2020-10-27 18:16:12,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-27 18:16:12,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:16:12,731 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:16:12,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:16:12,732 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:16:12,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:16:12,732 INFO L82 PathProgramCache]: Analyzing trace with hash -2078728700, now seen corresponding path program 1 times [2020-10-27 18:16:12,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:16:12,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279413047] [2020-10-27 18:16:12,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:16:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:12,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:13,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:13,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:16,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:16,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-27 18:16:16,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:16:16,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4027 [2020-10-27 18:16:16,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:16,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:16:16,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-27 18:16:16,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 18:16:16,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:16,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:16:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:16,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:16,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:16,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:16:16,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:16,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:16:16,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:16,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:16,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:16,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:16,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:16,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:16:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:17,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:17,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:17,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:16:17,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:17,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 18:16:17,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:17,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:16:17,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:17,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-27 18:16:17,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:17,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-27 18:16:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:17,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:17,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:17,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 18:16:17,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:17,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 18:16:17,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:17,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:16:17,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:16:17,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 18:16:17,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:17,600 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 18:16:17,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279413047] [2020-10-27 18:16:17,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:16:17,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:16:17,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135218889] [2020-10-27 18:16:17,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:16:17,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:16:17,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:16:17,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:16:17,604 INFO L87 Difference]: Start difference. First operand 2225 states and 2887 transitions. Second operand 8 states. [2020-10-27 18:16:20,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:16:20,884 INFO L93 Difference]: Finished difference Result 5398 states and 7121 transitions. [2020-10-27 18:16:20,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 18:16:20,885 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 298 [2020-10-27 18:16:20,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:16:20,905 INFO L225 Difference]: With dead ends: 5398 [2020-10-27 18:16:20,905 INFO L226 Difference]: Without dead ends: 3179 [2020-10-27 18:16:20,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-27 18:16:20,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2020-10-27 18:16:20,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 2981. [2020-10-27 18:16:20,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2981 states. [2020-10-27 18:16:21,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 3862 transitions. [2020-10-27 18:16:21,007 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 3862 transitions. Word has length 298 [2020-10-27 18:16:21,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:16:21,008 INFO L481 AbstractCegarLoop]: Abstraction has 2981 states and 3862 transitions. [2020-10-27 18:16:21,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:16:21,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 3862 transitions. [2020-10-27 18:16:21,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-27 18:16:21,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:16:21,016 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:16:21,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:16:21,017 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:16:21,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:16:21,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1466746756, now seen corresponding path program 1 times [2020-10-27 18:16:21,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:16:21,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54691162] [2020-10-27 18:16:21,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:16:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:21,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:21,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:21,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:23,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:23,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-27 18:16:23,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:16:23,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2310 [2020-10-27 18:16:23,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:23,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:16:23,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-27 18:16:23,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 18:16:23,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:23,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:16:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:23,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:23,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:23,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:16:23,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:23,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:16:23,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:23,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:23,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:23,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:23,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:23,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:16:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:23,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:23,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:23,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:16:23,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:23,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 18:16:23,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:23,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:16:23,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:23,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 18:16:23,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:23,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 18:16:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:23,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:23,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:23,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:23,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:16:23,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:16:23,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-27 18:16:23,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:24,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:16:24,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:16:24,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 18:16:24,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:24,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-27 18:16:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:24,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:24,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:24,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 18:16:24,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:24,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 18:16:24,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:24,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:24,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 18:16:24,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:24,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:24,502 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 91 proven. 104 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-27 18:16:24,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54691162] [2020-10-27 18:16:24,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:16:24,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:16:24,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043622810] [2020-10-27 18:16:24,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:16:24,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:16:24,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:16:24,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:16:24,505 INFO L87 Difference]: Start difference. First operand 2981 states and 3862 transitions. Second operand 7 states. [2020-10-27 18:16:26,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:16:26,755 INFO L93 Difference]: Finished difference Result 6117 states and 8380 transitions. [2020-10-27 18:16:26,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:16:26,756 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 303 [2020-10-27 18:16:26,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:16:26,776 INFO L225 Difference]: With dead ends: 6117 [2020-10-27 18:16:26,777 INFO L226 Difference]: Without dead ends: 3101 [2020-10-27 18:16:26,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:16:26,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2020-10-27 18:16:26,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 3007. [2020-10-27 18:16:26,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3007 states. [2020-10-27 18:16:26,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 3940 transitions. [2020-10-27 18:16:26,908 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 3940 transitions. Word has length 303 [2020-10-27 18:16:26,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:16:26,909 INFO L481 AbstractCegarLoop]: Abstraction has 3007 states and 3940 transitions. [2020-10-27 18:16:26,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:16:26,909 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 3940 transitions. [2020-10-27 18:16:26,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-27 18:16:26,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:16:26,918 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:16:26,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:16:26,919 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:16:26,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:16:26,920 INFO L82 PathProgramCache]: Analyzing trace with hash -303677124, now seen corresponding path program 1 times [2020-10-27 18:16:26,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:16:26,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27141061] [2020-10-27 18:16:26,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:16:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:27,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:27,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:27,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:31,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:31,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-27 18:16:31,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:16:31,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4104 [2020-10-27 18:16:31,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:31,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:16:31,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-27 18:16:31,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 18:16:31,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:31,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:16:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:31,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:31,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:31,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:16:31,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:31,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:16:31,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:31,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:31,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:31,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:31,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:31,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:16:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:31,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:31,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:31,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 18:16:31,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:31,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 18:16:31,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:31,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:16:31,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:31,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 18:16:31,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:31,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 18:16:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:31,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:31,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:31,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:16:31,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:31,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 18:16:31,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:31,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:16:31,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:16:31,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 18:16:31,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:31,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-27 18:16:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:31,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:31,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:31,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 18:16:31,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:31,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:16:31,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:31,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:31,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 18:16:31,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:31,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:31,721 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 92 proven. 104 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 18:16:31,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27141061] [2020-10-27 18:16:31,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:16:31,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:16:31,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844372981] [2020-10-27 18:16:31,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:16:31,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:16:31,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:16:31,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:16:31,725 INFO L87 Difference]: Start difference. First operand 3007 states and 3940 transitions. Second operand 7 states. [2020-10-27 18:16:34,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:16:34,241 INFO L93 Difference]: Finished difference Result 6222 states and 8175 transitions. [2020-10-27 18:16:34,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:16:34,242 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 304 [2020-10-27 18:16:34,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:16:34,255 INFO L225 Difference]: With dead ends: 6222 [2020-10-27 18:16:34,256 INFO L226 Difference]: Without dead ends: 2825 [2020-10-27 18:16:34,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:16:34,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2020-10-27 18:16:34,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 2805. [2020-10-27 18:16:34,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2805 states. [2020-10-27 18:16:34,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 3204 transitions. [2020-10-27 18:16:34,354 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 3204 transitions. Word has length 304 [2020-10-27 18:16:34,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:16:34,355 INFO L481 AbstractCegarLoop]: Abstraction has 2805 states and 3204 transitions. [2020-10-27 18:16:34,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:16:34,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 3204 transitions. [2020-10-27 18:16:34,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-27 18:16:34,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:16:34,364 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-27 18:16:34,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:16:34,364 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:16:34,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:16:34,365 INFO L82 PathProgramCache]: Analyzing trace with hash 2110830184, now seen corresponding path program 1 times [2020-10-27 18:16:34,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:16:34,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939538341] [2020-10-27 18:16:34,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:16:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:34,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:34,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:35,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:35,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:39,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:39,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-27 18:16:39,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:16:39,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 18:16:39,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:39,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:16:39,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-27 18:16:39,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 18:16:39,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:39,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:16:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:39,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:39,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:39,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:16:39,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:39,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:16:39,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:39,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:39,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:39,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:39,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:39,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:16:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:39,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:39,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:39,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:16:39,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:39,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 18:16:39,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:39,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:39,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:39,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:39,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:39,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-27 18:16:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:39,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:39,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:39,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 18:16:39,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:39,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 18:16:39,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:16:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-27 18:16:39,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:39,892 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-10-27 18:16:39,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939538341] [2020-10-27 18:16:39,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:16:39,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:16:39,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438566513] [2020-10-27 18:16:39,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:16:39,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:16:39,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:16:39,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:16:39,894 INFO L87 Difference]: Start difference. First operand 2805 states and 3204 transitions. Second operand 5 states. [2020-10-27 18:16:41,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:16:41,639 INFO L93 Difference]: Finished difference Result 7446 states and 8582 transitions. [2020-10-27 18:16:41,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:16:41,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 327 [2020-10-27 18:16:41,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:16:41,664 INFO L225 Difference]: With dead ends: 7446 [2020-10-27 18:16:41,664 INFO L226 Difference]: Without dead ends: 4277 [2020-10-27 18:16:41,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:16:41,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2020-10-27 18:16:41,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 3725. [2020-10-27 18:16:41,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3725 states. [2020-10-27 18:16:41,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3725 states to 3725 states and 4199 transitions. [2020-10-27 18:16:41,781 INFO L78 Accepts]: Start accepts. Automaton has 3725 states and 4199 transitions. Word has length 327 [2020-10-27 18:16:41,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:16:41,782 INFO L481 AbstractCegarLoop]: Abstraction has 3725 states and 4199 transitions. [2020-10-27 18:16:41,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:16:41,782 INFO L276 IsEmpty]: Start isEmpty. Operand 3725 states and 4199 transitions. [2020-10-27 18:16:41,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-27 18:16:41,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:16:41,792 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:16:41,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 18:16:41,793 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:16:41,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:16:41,793 INFO L82 PathProgramCache]: Analyzing trace with hash 641028076, now seen corresponding path program 1 times [2020-10-27 18:16:41,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:16:41,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686670395] [2020-10-27 18:16:41,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:16:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:41,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:41,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:43,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:43,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-27 18:16:43,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:16:43,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1456 [2020-10-27 18:16:43,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:43,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 18:16:43,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:16:43,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-27 18:16:43,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:43,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:16:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:43,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:43,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:43,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:16:43,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:43,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:16:43,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:43,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:16:43,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:43,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:16:43,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:43,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:16:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:43,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:43,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:44,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:44,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:16:44,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:16:44,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-10-27 18:16:44,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:44,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:16:44,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:16:44,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-27 18:16:44,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:44,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-27 18:16:44,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:44,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:44,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:44,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 18:16:44,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:44,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:16:44,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:44,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:44,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-27 18:16:44,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:44,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:44,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-27 18:16:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:44,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:44,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:44,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 18:16:44,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:44,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:16:44,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 18:16:44,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:44,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:44,349 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 18 proven. 174 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-27 18:16:44,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686670395] [2020-10-27 18:16:44,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:16:44,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:16:44,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069260568] [2020-10-27 18:16:44,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:16:44,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:16:44,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:16:44,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:16:44,352 INFO L87 Difference]: Start difference. First operand 3725 states and 4199 transitions. Second operand 8 states. [2020-10-27 18:16:46,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:16:46,452 INFO L93 Difference]: Finished difference Result 7635 states and 8609 transitions. [2020-10-27 18:16:46,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:16:46,453 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 377 [2020-10-27 18:16:46,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:16:46,470 INFO L225 Difference]: With dead ends: 7635 [2020-10-27 18:16:46,470 INFO L226 Difference]: Without dead ends: 3916 [2020-10-27 18:16:46,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:16:46,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3916 states. [2020-10-27 18:16:46,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3916 to 3909. [2020-10-27 18:16:46,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3909 states. [2020-10-27 18:16:46,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3909 states to 3909 states and 4390 transitions. [2020-10-27 18:16:46,586 INFO L78 Accepts]: Start accepts. Automaton has 3909 states and 4390 transitions. Word has length 377 [2020-10-27 18:16:46,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:16:46,587 INFO L481 AbstractCegarLoop]: Abstraction has 3909 states and 4390 transitions. [2020-10-27 18:16:46,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:16:46,587 INFO L276 IsEmpty]: Start isEmpty. Operand 3909 states and 4390 transitions. [2020-10-27 18:16:46,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2020-10-27 18:16:46,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:16:46,609 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:16:46,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 18:16:46,610 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:16:46,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:16:46,610 INFO L82 PathProgramCache]: Analyzing trace with hash -2068676184, now seen corresponding path program 1 times [2020-10-27 18:16:46,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:16:46,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587809740] [2020-10-27 18:16:46,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:16:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:46,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:46,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:49,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:49,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 616 [2020-10-27 18:16:49,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:16:49,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2942 [2020-10-27 18:16:49,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:49,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 18:16:49,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-27 18:16:49,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-27 18:16:49,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:49,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:16:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:49,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:49,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:49,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:16:49,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:49,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:16:49,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:49,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:49,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:49,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:49,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:49,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:16:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:49,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:49,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:49,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:16:49,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:49,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 18:16:49,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:49,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:49,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:49,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:49,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:49,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:16:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:49,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:50,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:50,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:16:50,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:50,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 18:16:50,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:50,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:16:50,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:16:50,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 18:16:50,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:50,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:16:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:50,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:50,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:50,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:50,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:16:50,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:16:50,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-10-27 18:16:50,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 18:16:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:16:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-27 18:16:50,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:51,247 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-10-27 18:16:51,458 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2020-10-27 18:16:51,688 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-10-27 18:16:51,930 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2020-10-27 18:16:52,176 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-27 18:16:52,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2020-10-27 18:16:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:52,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:52,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:52,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 18:16:52,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:52,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 18:16:52,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:52,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:52,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-27 18:16:52,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:52,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:52,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2020-10-27 18:16:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:16:52,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:16:52,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:16:52,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 18:16:52,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:16:52,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:16:52,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:16:52,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:16:52,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 18:16:52,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:16:52,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:16:53,840 INFO L134 CoverageAnalysis]: Checked inductivity of 989 backedges. 264 proven. 180 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2020-10-27 18:16:53,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587809740] [2020-10-27 18:16:53,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:16:53,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 18:16:53,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320549087] [2020-10-27 18:16:53,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 18:16:53,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:16:53,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 18:16:53,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:16:53,843 INFO L87 Difference]: Start difference. First operand 3909 states and 4390 transitions. Second operand 13 states. [2020-10-27 18:16:55,168 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 98 [2020-10-27 18:16:55,591 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 108 [2020-10-27 18:16:56,186 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 112 [2020-10-27 18:16:56,770 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2020-10-27 18:16:57,190 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 109 [2020-10-27 18:16:57,808 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 123 [2020-10-27 18:16:58,306 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-27 18:16:59,409 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 85 [2020-10-27 18:16:59,786 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 89 [2020-10-27 18:17:00,325 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 94 [2020-10-27 18:17:00,863 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 90 [2020-10-27 18:17:01,240 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 89 [2020-10-27 18:17:01,792 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 93 [2020-10-27 18:17:02,301 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-10-27 18:17:02,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:17:02,643 INFO L93 Difference]: Finished difference Result 7814 states and 8789 transitions. [2020-10-27 18:17:02,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 18:17:02,644 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 596 [2020-10-27 18:17:02,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:17:02,660 INFO L225 Difference]: With dead ends: 7814 [2020-10-27 18:17:02,660 INFO L226 Difference]: Without dead ends: 4026 [2020-10-27 18:17:02,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=248, Invalid=622, Unknown=0, NotChecked=0, Total=870 [2020-10-27 18:17:02,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2020-10-27 18:17:02,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 4024. [2020-10-27 18:17:02,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4024 states. [2020-10-27 18:17:02,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4024 states to 4024 states and 4506 transitions. [2020-10-27 18:17:02,763 INFO L78 Accepts]: Start accepts. Automaton has 4024 states and 4506 transitions. Word has length 596 [2020-10-27 18:17:02,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:17:02,764 INFO L481 AbstractCegarLoop]: Abstraction has 4024 states and 4506 transitions. [2020-10-27 18:17:02,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 18:17:02,764 INFO L276 IsEmpty]: Start isEmpty. Operand 4024 states and 4506 transitions. [2020-10-27 18:17:02,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2020-10-27 18:17:02,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:17:02,774 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-27 18:17:02,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 18:17:02,774 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:17:02,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:17:02,775 INFO L82 PathProgramCache]: Analyzing trace with hash -827678416, now seen corresponding path program 1 times [2020-10-27 18:17:02,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:17:02,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711204550] [2020-10-27 18:17:02,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:17:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:02,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:03,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:03,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:04,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:05,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:07,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:07,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 684 [2020-10-27 18:17:07,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:17:07,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 18:17:07,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:07,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 18:17:07,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-27 18:17:07,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-27 18:17:07,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:08,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:17:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:08,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:08,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:08,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:17:08,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:08,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:17:08,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:08,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:08,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:08,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:08,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:08,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:17:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:08,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:08,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:08,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:17:08,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:08,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:17:08,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:08,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:08,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:08,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:08,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:08,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:17:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:08,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:08,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:08,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:17:08,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:08,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-27 18:17:08,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:08,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:17:08,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:08,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-27 18:17:08,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:08,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-27 18:17:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:08,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:08,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:09,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:09,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:17:09,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:17:09,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 613 [2020-10-27 18:17:09,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:09,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:17:09,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:17:09,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-27 18:17:09,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:09,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-10-27 18:17:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:09,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:09,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:09,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 18:17:09,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:09,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:17:09,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:09,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:09,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-27 18:17:09,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:09,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:09,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2020-10-27 18:17:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:09,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:09,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:09,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 18:17:09,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:09,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:17:09,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 18:17:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:09,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:09,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 332 proven. 180 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2020-10-27 18:17:09,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711204550] [2020-10-27 18:17:09,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:17:09,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:17:09,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115115237] [2020-10-27 18:17:09,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:17:09,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:17:09,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:17:09,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:17:09,499 INFO L87 Difference]: Start difference. First operand 4024 states and 4506 transitions. Second operand 8 states. [2020-10-27 18:17:12,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:17:12,095 INFO L93 Difference]: Finished difference Result 8050 states and 9039 transitions. [2020-10-27 18:17:12,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:17:12,096 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 664 [2020-10-27 18:17:12,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:17:12,123 INFO L225 Difference]: With dead ends: 8050 [2020-10-27 18:17:12,124 INFO L226 Difference]: Without dead ends: 4214 [2020-10-27 18:17:12,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:17:12,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4214 states. [2020-10-27 18:17:12,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4214 to 4206. [2020-10-27 18:17:12,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4206 states. [2020-10-27 18:17:12,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4206 states to 4206 states and 4690 transitions. [2020-10-27 18:17:12,231 INFO L78 Accepts]: Start accepts. Automaton has 4206 states and 4690 transitions. Word has length 664 [2020-10-27 18:17:12,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:17:12,232 INFO L481 AbstractCegarLoop]: Abstraction has 4206 states and 4690 transitions. [2020-10-27 18:17:12,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:17:12,233 INFO L276 IsEmpty]: Start isEmpty. Operand 4206 states and 4690 transitions. [2020-10-27 18:17:12,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 714 [2020-10-27 18:17:12,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:17:12,243 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 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] [2020-10-27 18:17:12,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 18:17:12,244 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:17:12,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:17:12,244 INFO L82 PathProgramCache]: Analyzing trace with hash 906691332, now seen corresponding path program 1 times [2020-10-27 18:17:12,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:17:12,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576356372] [2020-10-27 18:17:12,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:17:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:12,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:12,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:13,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:17,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:17,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 735 [2020-10-27 18:17:17,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:17:17,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 18:17:17,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:17,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 18:17:17,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-27 18:17:17,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-27 18:17:17,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:17,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:17:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:17,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:17,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:17,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:17:17,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:17,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:17:17,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:17,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:17,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:17,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:17,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:17,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:17:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:17,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:17,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:17,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:17:17,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:17,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:17:17,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:17,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:17,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:17,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:17,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:17,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:17:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:17,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:17,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:17,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:17:17,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:17,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 18:17:17,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:17,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:17,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:17,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:17,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:17,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:17:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:17,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:17,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:17,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:17:17,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:17,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 18:17:17,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:17,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:17:17,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:17,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 18:17:17,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:17,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-27 18:17:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:17,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:18,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:18,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:18,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:17:18,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:17:18,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 596 [2020-10-27 18:17:18,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:18,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 18:17:18,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:17:18,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-27 18:17:18,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:19,018 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-27 18:17:19,352 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 77 [2020-10-27 18:17:19,712 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2020-10-27 18:17:20,070 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2020-10-27 18:17:20,459 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 83 [2020-10-27 18:17:20,855 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2020-10-27 18:17:21,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-10-27 18:17:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:21,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:21,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:21,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 18:17:21,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:21,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:17:21,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-27 18:17:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:21,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:21,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-27 18:17:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:21,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:21,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:21,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 18:17:21,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:21,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:17:21,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:21,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:21,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 18:17:21,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:21,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:24,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 397 proven. 180 refuted. 0 times theorem prover too weak. 938 trivial. 0 not checked. [2020-10-27 18:17:24,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576356372] [2020-10-27 18:17:24,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:17:24,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 18:17:24,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69854730] [2020-10-27 18:17:24,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 18:17:24,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:17:24,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 18:17:24,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:17:24,080 INFO L87 Difference]: Start difference. First operand 4206 states and 4690 transitions. Second operand 13 states. [2020-10-27 18:17:24,366 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2020-10-27 18:17:25,455 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 95 [2020-10-27 18:17:26,198 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2020-10-27 18:17:26,947 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 99 [2020-10-27 18:17:27,528 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 100 [2020-10-27 18:17:27,959 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 102 [2020-10-27 18:17:28,395 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 102 [2020-10-27 18:17:29,025 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 117 [2020-10-27 18:17:29,495 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 55 [2020-10-27 18:17:29,886 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 83 [2020-10-27 18:17:31,052 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 88 [2020-10-27 18:17:32,165 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 91 [2020-10-27 18:17:32,733 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 92 [2020-10-27 18:17:33,216 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 94 [2020-10-27 18:17:33,708 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 94 [2020-10-27 18:17:34,213 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 98 [2020-10-27 18:17:34,704 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2020-10-27 18:17:35,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:17:35,033 INFO L93 Difference]: Finished difference Result 8224 states and 9190 transitions. [2020-10-27 18:17:35,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 18:17:35,039 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 713 [2020-10-27 18:17:35,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:17:35,051 INFO L225 Difference]: With dead ends: 8224 [2020-10-27 18:17:35,051 INFO L226 Difference]: Without dead ends: 4181 [2020-10-27 18:17:35,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=265, Invalid=665, Unknown=0, NotChecked=0, Total=930 [2020-10-27 18:17:35,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4181 states. [2020-10-27 18:17:35,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4181 to 4181. [2020-10-27 18:17:35,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4181 states. [2020-10-27 18:17:35,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4181 states to 4181 states and 4650 transitions. [2020-10-27 18:17:35,146 INFO L78 Accepts]: Start accepts. Automaton has 4181 states and 4650 transitions. Word has length 713 [2020-10-27 18:17:35,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:17:35,147 INFO L481 AbstractCegarLoop]: Abstraction has 4181 states and 4650 transitions. [2020-10-27 18:17:35,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 18:17:35,148 INFO L276 IsEmpty]: Start isEmpty. Operand 4181 states and 4650 transitions. [2020-10-27 18:17:35,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2020-10-27 18:17:35,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:17:35,159 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-27 18:17:35,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 18:17:35,159 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:17:35,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:17:35,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1648190860, now seen corresponding path program 1 times [2020-10-27 18:17:35,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:17:35,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731496168] [2020-10-27 18:17:35,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:17:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:35,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:35,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:36,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:38,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:40,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:40,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 762 [2020-10-27 18:17:40,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:17:40,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-27 18:17:40,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:40,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:17:40,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 377 [2020-10-27 18:17:40,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-27 18:17:40,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:40,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:17:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:40,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:40,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:40,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:17:40,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:40,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:17:40,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:40,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:40,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:40,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:40,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:40,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:17:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:40,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:40,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:40,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:17:40,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:40,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 18:17:40,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:40,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:40,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:40,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:40,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:40,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:17:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:40,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:40,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:40,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:17:40,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:40,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:17:40,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:40,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:40,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:40,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:40,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:40,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-27 18:17:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:40,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:40,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:40,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:17:40,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:40,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 18:17:40,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:40,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:17:40,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:40,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 18:17:40,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:40,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-10-27 18:17:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:40,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:40,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:40,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:17:40,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:40,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-27 18:17:40,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:40,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:17:40,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:17:40,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-27 18:17:40,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:17:41,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2020-10-27 18:17:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:41,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:41,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:41,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 18:17:41,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:41,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 18:17:41,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:41,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:17:41,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:17:41,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 18:17:41,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:41,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 629 [2020-10-27 18:17:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:41,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:41,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:41,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 18:17:41,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:41,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 18:17:41,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:41,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:41,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 18:17:41,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:41,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:41,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 649 proven. 182 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2020-10-27 18:17:41,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731496168] [2020-10-27 18:17:41,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:17:41,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 18:17:41,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043132136] [2020-10-27 18:17:41,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 18:17:41,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:17:41,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 18:17:41,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 18:17:41,761 INFO L87 Difference]: Start difference. First operand 4181 states and 4650 transitions. Second operand 9 states. [2020-10-27 18:17:45,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:17:45,299 INFO L93 Difference]: Finished difference Result 10024 states and 11268 transitions. [2020-10-27 18:17:45,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 18:17:45,305 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 740 [2020-10-27 18:17:45,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:17:45,324 INFO L225 Difference]: With dead ends: 10024 [2020-10-27 18:17:45,324 INFO L226 Difference]: Without dead ends: 6031 [2020-10-27 18:17:45,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-27 18:17:45,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6031 states. [2020-10-27 18:17:45,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6031 to 5841. [2020-10-27 18:17:45,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5841 states. [2020-10-27 18:17:45,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5841 states to 5841 states and 6573 transitions. [2020-10-27 18:17:45,465 INFO L78 Accepts]: Start accepts. Automaton has 5841 states and 6573 transitions. Word has length 740 [2020-10-27 18:17:45,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:17:45,466 INFO L481 AbstractCegarLoop]: Abstraction has 5841 states and 6573 transitions. [2020-10-27 18:17:45,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 18:17:45,466 INFO L276 IsEmpty]: Start isEmpty. Operand 5841 states and 6573 transitions. [2020-10-27 18:17:45,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2020-10-27 18:17:45,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:17:45,478 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:17:45,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 18:17:45,478 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:17:45,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:17:45,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1744604920, now seen corresponding path program 1 times [2020-10-27 18:17:45,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:17:45,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132701338] [2020-10-27 18:17:45,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:17:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:45,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:45,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:46,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:47,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:50,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:50,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 795 [2020-10-27 18:17:50,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:17:50,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 18:17:50,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:50,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:17:50,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 558 [2020-10-27 18:17:50,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 18:17:50,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:50,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:17:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:50,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:50,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:50,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:17:50,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:50,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:17:50,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:50,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:50,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:50,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:50,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:50,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:17:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:50,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:50,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:50,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:17:50,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:50,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:17:50,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:50,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:50,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:50,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:50,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:50,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:17:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:50,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:50,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:50,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:17:50,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:50,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 18:17:50,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:50,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:50,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:50,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:50,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:50,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-27 18:17:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:50,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:50,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:50,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:17:50,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:50,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 18:17:50,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:50,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:50,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:50,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:50,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:50,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-10-27 18:17:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:50,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:51,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:51,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:17:51,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:51,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 18:17:51,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:51,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:17:51,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:51,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-27 18:17:51,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:51,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2020-10-27 18:17:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:51,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:51,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:51,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:17:51,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:51,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 18:17:51,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:51,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:17:51,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:17:51,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 18:17:51,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:51,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 662 [2020-10-27 18:17:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:51,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:51,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:51,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 18:17:51,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:51,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 18:17:51,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:51,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:51,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 18:17:51,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:51,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:51,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1567 backedges. 465 proven. 104 refuted. 0 times theorem prover too weak. 998 trivial. 0 not checked. [2020-10-27 18:17:51,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132701338] [2020-10-27 18:17:51,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:17:51,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:17:51,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392423520] [2020-10-27 18:17:51,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:17:51,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:17:51,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:17:51,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:17:51,705 INFO L87 Difference]: Start difference. First operand 5841 states and 6573 transitions. Second operand 7 states. [2020-10-27 18:17:53,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:17:53,716 INFO L93 Difference]: Finished difference Result 11676 states and 13159 transitions. [2020-10-27 18:17:53,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 18:17:53,719 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 773 [2020-10-27 18:17:53,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:17:53,739 INFO L225 Difference]: With dead ends: 11676 [2020-10-27 18:17:53,739 INFO L226 Difference]: Without dead ends: 6023 [2020-10-27 18:17:53,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:17:53,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6023 states. [2020-10-27 18:17:53,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6023 to 6023. [2020-10-27 18:17:53,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6023 states. [2020-10-27 18:17:53,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6023 states to 6023 states and 6714 transitions. [2020-10-27 18:17:53,883 INFO L78 Accepts]: Start accepts. Automaton has 6023 states and 6714 transitions. Word has length 773 [2020-10-27 18:17:53,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:17:53,885 INFO L481 AbstractCegarLoop]: Abstraction has 6023 states and 6714 transitions. [2020-10-27 18:17:53,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:17:53,885 INFO L276 IsEmpty]: Start isEmpty. Operand 6023 states and 6714 transitions. [2020-10-27 18:17:53,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 892 [2020-10-27 18:17:53,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:17:53,900 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:17:53,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 18:17:53,901 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:17:53,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:17:53,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1969697184, now seen corresponding path program 1 times [2020-10-27 18:17:53,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:17:53,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696879541] [2020-10-27 18:17:53,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:17:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:54,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:54,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:54,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:55,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:59,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:59,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 915 [2020-10-27 18:17:59,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:17:59,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 18:17:59,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:59,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:17:59,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 678 [2020-10-27 18:17:59,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 18:17:59,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:59,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:17:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:59,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:59,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:59,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:17:59,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:59,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:17:59,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:59,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:59,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:59,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:59,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:59,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:17:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:59,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:59,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:59,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:17:59,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:59,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 18:17:59,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:59,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:59,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:59,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:59,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:59,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:17:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:59,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:59,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:59,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:17:59,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:59,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:17:59,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:59,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:59,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:59,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:59,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-27 18:17:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:59,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:59,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:59,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:17:59,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:59,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 18:17:59,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:59,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:59,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:59,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:59,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:59,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-10-27 18:17:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:59,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:59,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:59,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:17:59,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:59,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 18:17:59,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:59,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:59,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:59,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:59,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:59,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2020-10-27 18:17:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:59,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:59,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:59,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 18:17:59,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:59,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 18:17:59,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:59,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:17:59,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:17:59,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 18:17:59,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:59,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-27 18:17:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:59,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:59,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:59,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:17:59,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:59,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 18:17:59,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:59,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:17:59,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:17:59,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 18:17:59,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:17:59,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 780 [2020-10-27 18:17:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:17:59,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:17:59,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:17:59,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 18:17:59,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:17:59,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 18:17:59,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:17:59,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:17:59,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 18:17:59,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:17:59,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2212 backedges. 589 proven. 104 refuted. 0 times theorem prover too weak. 1519 trivial. 0 not checked. [2020-10-27 18:18:00,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696879541] [2020-10-27 18:18:00,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:18:00,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:18:00,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69242035] [2020-10-27 18:18:00,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:18:00,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:18:00,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:18:00,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:18:00,488 INFO L87 Difference]: Start difference. First operand 6023 states and 6714 transitions. Second operand 7 states. [2020-10-27 18:18:02,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:18:02,729 INFO L93 Difference]: Finished difference Result 12182 states and 14007 transitions. [2020-10-27 18:18:02,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:18:02,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 891 [2020-10-27 18:18:02,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:18:02,753 INFO L225 Difference]: With dead ends: 12182 [2020-10-27 18:18:02,753 INFO L226 Difference]: Without dead ends: 6347 [2020-10-27 18:18:02,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:18:02,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6347 states. [2020-10-27 18:18:02,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6347 to 6025. [2020-10-27 18:18:02,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6025 states. [2020-10-27 18:18:02,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6025 states to 6025 states and 6711 transitions. [2020-10-27 18:18:02,906 INFO L78 Accepts]: Start accepts. Automaton has 6025 states and 6711 transitions. Word has length 891 [2020-10-27 18:18:02,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:18:02,907 INFO L481 AbstractCegarLoop]: Abstraction has 6025 states and 6711 transitions. [2020-10-27 18:18:02,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:18:02,908 INFO L276 IsEmpty]: Start isEmpty. Operand 6025 states and 6711 transitions. [2020-10-27 18:18:02,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2020-10-27 18:18:02,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:18:02,922 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:18:02,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 18:18:02,922 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:18:02,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:18:02,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1835731560, now seen corresponding path program 1 times [2020-10-27 18:18:02,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:18:02,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116719071] [2020-10-27 18:18:02,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:18:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:03,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:03,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:03,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:05,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:08,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:08,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1024 [2020-10-27 18:18:08,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:18:08,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 18:18:08,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:08,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:18:08,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 820 [2020-10-27 18:18:08,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 18:18:08,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:08,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:18:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:08,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:08,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:08,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:18:08,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:08,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:18:08,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:08,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:08,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:08,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:08,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:08,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:18:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:08,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:08,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:08,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:18:08,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:08,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:18:08,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:08,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:08,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:08,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:08,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:08,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:18:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:08,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:08,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:08,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:18:08,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:08,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:18:08,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:08,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:08,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:08,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:08,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:08,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-27 18:18:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:08,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:08,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:08,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:18:08,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:08,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 18:18:08,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:08,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:08,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:08,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:08,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:08,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-10-27 18:18:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:08,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:08,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:08,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:18:08,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:08,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 18:18:08,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:08,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:08,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:08,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:08,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:08,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2020-10-27 18:18:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:08,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:08,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:08,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 18:18:08,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:08,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:18:08,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:08,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:08,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:08,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:08,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:08,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-27 18:18:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:08,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:08,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:08,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 18:18:08,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:08,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 18:18:08,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:08,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:18:08,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:08,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-27 18:18:08,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:08,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 808 [2020-10-27 18:18:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:08,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:08,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:08,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 18:18:08,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:08,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 18:18:08,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:08,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:18:08,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:18:08,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 18:18:08,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:08,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 887 [2020-10-27 18:18:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:08,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:08,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:08,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 18:18:08,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:08,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:18:08,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:08,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:08,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 18:18:08,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:08,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:09,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2830 backedges. 550 proven. 78 refuted. 0 times theorem prover too weak. 2202 trivial. 0 not checked. [2020-10-27 18:18:09,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116719071] [2020-10-27 18:18:09,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:18:09,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:18:09,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356057243] [2020-10-27 18:18:09,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:18:09,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:18:09,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:18:09,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:18:09,335 INFO L87 Difference]: Start difference. First operand 6025 states and 6711 transitions. Second operand 7 states. [2020-10-27 18:18:11,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:18:11,207 INFO L93 Difference]: Finished difference Result 12761 states and 14212 transitions. [2020-10-27 18:18:11,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:18:11,211 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 998 [2020-10-27 18:18:11,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:18:11,231 INFO L225 Difference]: With dead ends: 12761 [2020-10-27 18:18:11,231 INFO L226 Difference]: Without dead ends: 6924 [2020-10-27 18:18:11,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:18:11,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6924 states. [2020-10-27 18:18:11,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6924 to 6656. [2020-10-27 18:18:11,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6656 states. [2020-10-27 18:18:11,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6656 states to 6656 states and 7378 transitions. [2020-10-27 18:18:11,370 INFO L78 Accepts]: Start accepts. Automaton has 6656 states and 7378 transitions. Word has length 998 [2020-10-27 18:18:11,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:18:11,371 INFO L481 AbstractCegarLoop]: Abstraction has 6656 states and 7378 transitions. [2020-10-27 18:18:11,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:18:11,372 INFO L276 IsEmpty]: Start isEmpty. Operand 6656 states and 7378 transitions. [2020-10-27 18:18:11,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1213 [2020-10-27 18:18:11,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:18:11,392 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:18:11,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 18:18:11,393 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:18:11,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:18:11,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1588418880, now seen corresponding path program 1 times [2020-10-27 18:18:11,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:18:11,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982669054] [2020-10-27 18:18:11,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:18:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:11,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:11,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:14,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:16,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:16,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:16,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1240 [2020-10-27 18:18:16,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:18:16,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-27 18:18:16,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:16,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:18:16,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1117 [2020-10-27 18:18:16,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 18:18:16,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:16,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:18:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:16,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:16,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:16,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:18:16,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:16,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:18:16,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:16,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:16,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:16,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:16,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:16,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:18:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:16,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:16,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:16,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:18:16,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:16,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 18:18:16,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:16,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:16,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:16,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:16,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:17,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:18:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:17,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:17,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:17,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:18:17,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:17,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 18:18:17,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:17,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:17,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-27 18:18:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:17,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:17,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:17,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:18:17,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:17,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:18:17,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:17,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:17,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:17,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:17,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:17,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-10-27 18:18:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:17,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:17,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:17,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:18:17,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:17,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:18:17,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:17,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:17,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:17,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:17,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:17,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2020-10-27 18:18:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:17,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:17,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:17,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 18:18:17,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:17,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 18:18:17,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:17,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:17,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:17,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:17,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:17,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-27 18:18:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:17,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:17,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:17,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 18:18:17,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:17,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 18:18:17,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:17,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:17,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:17,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:17,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:17,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 808 [2020-10-27 18:18:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:17,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:17,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:17,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 18:18:17,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:17,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 18:18:17,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:17,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:17,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:17,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:17,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:17,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 990 [2020-10-27 18:18:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:17,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:17,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:17,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 18:18:17,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:17,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 18:18:17,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:17,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:18:17,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:17,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 18:18:17,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:17,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1101 [2020-10-27 18:18:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:17,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:17,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:17,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 18:18:17,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:17,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 18:18:17,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:17,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:18:17,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:18:17,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 18:18:17,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:18,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4037 backedges. 876 proven. 2 refuted. 0 times theorem prover too weak. 3159 trivial. 0 not checked. [2020-10-27 18:18:18,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982669054] [2020-10-27 18:18:18,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:18:18,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:18:18,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157298657] [2020-10-27 18:18:18,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:18:18,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:18:18,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:18:18,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:18:18,492 INFO L87 Difference]: Start difference. First operand 6656 states and 7378 transitions. Second operand 7 states. [2020-10-27 18:18:20,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:18:20,676 INFO L93 Difference]: Finished difference Result 13514 states and 15009 transitions. [2020-10-27 18:18:20,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 18:18:20,677 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1212 [2020-10-27 18:18:20,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:18:20,690 INFO L225 Difference]: With dead ends: 13514 [2020-10-27 18:18:20,691 INFO L226 Difference]: Without dead ends: 4832 [2020-10-27 18:18:20,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:18:20,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4832 states. [2020-10-27 18:18:20,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4832 to 4353. [2020-10-27 18:18:20,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4353 states. [2020-10-27 18:18:20,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 4535 transitions. [2020-10-27 18:18:20,797 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 4535 transitions. Word has length 1212 [2020-10-27 18:18:20,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:18:20,798 INFO L481 AbstractCegarLoop]: Abstraction has 4353 states and 4535 transitions. [2020-10-27 18:18:20,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:18:20,799 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 4535 transitions. [2020-10-27 18:18:20,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1214 [2020-10-27 18:18:20,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:18:20,819 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:18:20,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 18:18:20,820 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:18:20,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:18:20,820 INFO L82 PathProgramCache]: Analyzing trace with hash 515337852, now seen corresponding path program 1 times [2020-10-27 18:18:20,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:18:20,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583536187] [2020-10-27 18:18:20,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:18:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:21,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:21,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:21,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:26,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:26,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1241 [2020-10-27 18:18:26,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:18:26,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-27 18:18:26,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:26,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:18:26,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-27 18:18:26,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-27 18:18:26,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:26,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:18:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:26,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:26,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:26,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:18:26,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:26,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:18:26,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:26,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:26,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:26,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:26,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:26,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:18:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:26,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:26,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:26,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:18:26,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:26,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 18:18:26,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:26,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:18:26,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:26,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:18:26,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:26,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:18:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:26,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:26,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:26,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:18:26,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:26,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 18:18:26,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:26,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:18:26,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:18:26,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-27 18:18:26,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:26,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-27 18:18:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:26,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:26,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:26,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:18:26,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:26,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:18:26,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:26,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:26,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-27 18:18:26,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:26,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:26,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-10-27 18:18:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:26,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:26,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:26,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:18:26,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:26,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 18:18:26,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:26,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:26,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-27 18:18:26,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:26,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:26,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2020-10-27 18:18:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:26,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:26,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:26,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 18:18:26,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:26,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:18:26,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:26,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:26,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-27 18:18:26,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:26,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:26,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-27 18:18:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:26,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:26,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:26,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 18:18:26,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:26,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 18:18:26,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-27 18:18:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:26,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:26,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 808 [2020-10-27 18:18:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:26,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:26,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:26,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 18:18:26,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:26,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 18:18:26,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:26,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:26,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-27 18:18:26,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:26,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:26,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 990 [2020-10-27 18:18:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:26,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:26,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:26,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:18:26,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:26,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 18:18:26,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:26,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:26,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 18:18:26,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:26,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:27,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1102 [2020-10-27 18:18:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:27,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:27,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:27,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 18:18:27,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:27,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:18:27,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:27,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:27,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 18:18:27,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:27,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:27,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4042 backedges. 189 proven. 886 refuted. 0 times theorem prover too weak. 2967 trivial. 0 not checked. [2020-10-27 18:18:27,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583536187] [2020-10-27 18:18:27,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:18:27,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:18:27,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422701607] [2020-10-27 18:18:27,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:18:27,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:18:27,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:18:27,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:18:27,895 INFO L87 Difference]: Start difference. First operand 4353 states and 4535 transitions. Second operand 7 states. [2020-10-27 18:18:29,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:18:29,556 INFO L93 Difference]: Finished difference Result 8710 states and 9082 transitions. [2020-10-27 18:18:29,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:18:29,557 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1213 [2020-10-27 18:18:29,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:18:29,569 INFO L225 Difference]: With dead ends: 8710 [2020-10-27 18:18:29,569 INFO L226 Difference]: Without dead ends: 4545 [2020-10-27 18:18:29,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:18:29,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4545 states. [2020-10-27 18:18:29,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4545 to 4535. [2020-10-27 18:18:29,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4535 states. [2020-10-27 18:18:29,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4535 states to 4535 states and 4721 transitions. [2020-10-27 18:18:29,655 INFO L78 Accepts]: Start accepts. Automaton has 4535 states and 4721 transitions. Word has length 1213 [2020-10-27 18:18:29,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:18:29,656 INFO L481 AbstractCegarLoop]: Abstraction has 4535 states and 4721 transitions. [2020-10-27 18:18:29,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:18:29,656 INFO L276 IsEmpty]: Start isEmpty. Operand 4535 states and 4721 transitions. [2020-10-27 18:18:29,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1346 [2020-10-27 18:18:29,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:18:29,687 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 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, 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] [2020-10-27 18:18:29,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 18:18:29,687 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:18:29,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:18:29,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1332348148, now seen corresponding path program 1 times [2020-10-27 18:18:29,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:18:29,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445900791] [2020-10-27 18:18:29,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:18:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:30,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:30,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:30,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:34,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:35,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:35,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1375 [2020-10-27 18:18:35,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:18:35,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5127 [2020-10-27 18:18:35,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:35,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:18:35,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1138 [2020-10-27 18:18:35,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 18:18:35,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:35,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:18:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:35,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:35,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:35,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:18:35,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:35,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:18:35,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:35,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:35,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:35,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:35,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:35,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:18:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:35,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:35,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:35,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:18:35,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:35,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:18:35,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:35,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:35,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:35,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:35,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:35,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:18:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:35,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:35,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:35,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:18:35,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:35,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:18:35,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:35,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:35,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:35,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:35,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:35,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:18:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:35,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:35,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:35,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:18:35,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:35,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:18:35,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:35,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:35,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:35,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:35,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:35,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-27 18:18:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:35,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:35,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:35,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 18:18:35,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:35,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 18:18:35,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:35,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:35,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:35,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:35,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:35,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-27 18:18:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:35,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:35,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:35,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:18:35,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:35,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 18:18:35,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:35,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:35,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:35,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-10-27 18:18:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:35,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:35,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:35,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 18:18:35,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:35,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:18:35,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:35,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:35,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:35,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:35,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:35,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 800 [2020-10-27 18:18:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:35,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:35,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:35,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 18:18:35,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:35,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 18:18:35,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:35,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:35,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:35,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:35,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:35,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 940 [2020-10-27 18:18:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:35,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:35,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:35,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 18:18:35,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:35,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 18:18:35,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:35,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:18:35,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:35,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-27 18:18:35,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:35,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1122 [2020-10-27 18:18:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:35,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:36,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:36,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:18:36,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:36,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 18:18:36,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:18:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:18:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 18:18:36,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:36,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1234 [2020-10-27 18:18:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:36,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:36,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:36,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 18:18:36,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:36,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:18:36,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:36,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:36,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 18:18:36,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:36,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:37,339 INFO L134 CoverageAnalysis]: Checked inductivity of 5293 backedges. 994 proven. 104 refuted. 0 times theorem prover too weak. 4195 trivial. 0 not checked. [2020-10-27 18:18:37,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445900791] [2020-10-27 18:18:37,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:18:37,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:18:37,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487811964] [2020-10-27 18:18:37,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:18:37,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:18:37,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:18:37,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:18:37,341 INFO L87 Difference]: Start difference. First operand 4535 states and 4721 transitions. Second operand 7 states. [2020-10-27 18:18:39,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:18:39,120 INFO L93 Difference]: Finished difference Result 9256 states and 9649 transitions. [2020-10-27 18:18:39,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:18:39,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1345 [2020-10-27 18:18:39,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:18:39,133 INFO L225 Difference]: With dead ends: 9256 [2020-10-27 18:18:39,133 INFO L226 Difference]: Without dead ends: 4909 [2020-10-27 18:18:39,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:18:39,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4909 states. [2020-10-27 18:18:39,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4909 to 4535. [2020-10-27 18:18:39,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4535 states. [2020-10-27 18:18:39,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4535 states to 4535 states and 4715 transitions. [2020-10-27 18:18:39,225 INFO L78 Accepts]: Start accepts. Automaton has 4535 states and 4715 transitions. Word has length 1345 [2020-10-27 18:18:39,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:18:39,226 INFO L481 AbstractCegarLoop]: Abstraction has 4535 states and 4715 transitions. [2020-10-27 18:18:39,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:18:39,226 INFO L276 IsEmpty]: Start isEmpty. Operand 4535 states and 4715 transitions. [2020-10-27 18:18:39,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1426 [2020-10-27 18:18:39,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:18:39,250 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 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, 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] [2020-10-27 18:18:39,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 18:18:39,250 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:18:39,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:18:39,251 INFO L82 PathProgramCache]: Analyzing trace with hash -432420828, now seen corresponding path program 1 times [2020-10-27 18:18:39,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:18:39,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416064804] [2020-10-27 18:18:39,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:18:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:39,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:40,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:43,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:44,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:44,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1457 [2020-10-27 18:18:44,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:18:44,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-27 18:18:44,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:44,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:18:44,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1253 [2020-10-27 18:18:44,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 18:18:44,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:44,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:18:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:44,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:44,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:44,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:18:44,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:44,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:18:44,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:44,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:44,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:44,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:44,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:44,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:18:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:44,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:44,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:44,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:18:44,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:44,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:18:44,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:44,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:44,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:44,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:44,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:44,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:18:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:44,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:44,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:44,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:18:44,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:44,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:18:44,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:44,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:44,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:44,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:44,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:44,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:18:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:44,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:45,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:45,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:18:45,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:45,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:18:45,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:45,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:45,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:45,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:45,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:45,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-27 18:18:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:45,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:45,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:45,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 18:18:45,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:45,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:18:45,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:45,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:45,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:45,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:45,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:45,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-27 18:18:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:45,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:45,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:45,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:18:45,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:45,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:18:45,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:45,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:45,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-10-27 18:18:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:45,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:45,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:45,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 18:18:45,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:45,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:18:45,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:45,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:45,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 800 [2020-10-27 18:18:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:45,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:45,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:45,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 18:18:45,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:45,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:18:45,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:45,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:45,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:45,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:45,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:45,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 940 [2020-10-27 18:18:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:45,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:45,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:45,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 18:18:45,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:45,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:18:45,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:45,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:45,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:45,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:45,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:45,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1122 [2020-10-27 18:18:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:45,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:45,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:45,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 18:18:45,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:45,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 18:18:45,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:45,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:18:45,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 18:18:45,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:45,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1235 [2020-10-27 18:18:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:45,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:45,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:45,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 18:18:45,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:45,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 18:18:45,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:45,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:18:45,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:18:45,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 18:18:45,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:45,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1314 [2020-10-27 18:18:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:45,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:45,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:45,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 18:18:45,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:45,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:18:45,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 18:18:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:45,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:46,592 INFO L134 CoverageAnalysis]: Checked inductivity of 6095 backedges. 826 proven. 78 refuted. 0 times theorem prover too weak. 5191 trivial. 0 not checked. [2020-10-27 18:18:46,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416064804] [2020-10-27 18:18:46,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:18:46,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:18:46,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147472606] [2020-10-27 18:18:46,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:18:46,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:18:46,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:18:46,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:18:46,594 INFO L87 Difference]: Start difference. First operand 4535 states and 4715 transitions. Second operand 7 states. [2020-10-27 18:18:48,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:18:48,446 INFO L93 Difference]: Finished difference Result 8882 states and 9225 transitions. [2020-10-27 18:18:48,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:18:48,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1425 [2020-10-27 18:18:48,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:18:48,457 INFO L225 Difference]: With dead ends: 8882 [2020-10-27 18:18:48,457 INFO L226 Difference]: Without dead ends: 4535 [2020-10-27 18:18:48,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:18:48,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4535 states. [2020-10-27 18:18:48,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4535 to 4345. [2020-10-27 18:18:48,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4345 states. [2020-10-27 18:18:48,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4345 states to 4345 states and 4497 transitions. [2020-10-27 18:18:48,543 INFO L78 Accepts]: Start accepts. Automaton has 4345 states and 4497 transitions. Word has length 1425 [2020-10-27 18:18:48,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:18:48,545 INFO L481 AbstractCegarLoop]: Abstraction has 4345 states and 4497 transitions. [2020-10-27 18:18:48,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:18:48,545 INFO L276 IsEmpty]: Start isEmpty. Operand 4345 states and 4497 transitions. [2020-10-27 18:18:48,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1586 [2020-10-27 18:18:48,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:18:48,571 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 10, 9, 9, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-27 18:18:48,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 18:18:48,571 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:18:48,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:18:48,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1290264304, now seen corresponding path program 1 times [2020-10-27 18:18:48,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:18:48,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376827739] [2020-10-27 18:18:48,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:18:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:48,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:49,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:49,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:53,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:53,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1619 [2020-10-27 18:18:53,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:18:53,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-27 18:18:53,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:53,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:18:53,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1382 [2020-10-27 18:18:53,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 18:18:53,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:54,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:18:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:54,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:54,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:54,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:18:54,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:54,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:18:54,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:54,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:54,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:18:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:54,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:54,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:54,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:18:54,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:54,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:18:54,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:54,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:54,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:54,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:54,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:54,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:18:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:54,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:54,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:54,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:18:54,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:54,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:18:54,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:54,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:54,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:54,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:54,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:54,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:18:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:54,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:54,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:54,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:18:54,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:54,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 18:18:54,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:54,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:54,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:54,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:54,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:54,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-27 18:18:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:54,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:54,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:54,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 18:18:54,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:54,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 18:18:54,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:54,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:54,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:54,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:54,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:54,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-27 18:18:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:54,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:54,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:54,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:18:54,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:54,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:18:54,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:54,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:54,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:54,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:54,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-10-27 18:18:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:54,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:54,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:54,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 18:18:54,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:54,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:18:54,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:54,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:54,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:54,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:54,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:54,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 800 [2020-10-27 18:18:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:54,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:54,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:54,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 18:18:54,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:54,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 18:18:54,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:54,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:54,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:54,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:54,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:54,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 940 [2020-10-27 18:18:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:54,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:54,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:54,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 18:18:54,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:54,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 18:18:54,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:54,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:54,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:54,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:54,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:54,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1122 [2020-10-27 18:18:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:54,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:54,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:54,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 18:18:54,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:54,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 18:18:54,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:54,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:54,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:54,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:54,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:54,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1235 [2020-10-27 18:18:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:54,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:54,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:54,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 18:18:54,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:54,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 18:18:54,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:54,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:18:54,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:18:54,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-27 18:18:54,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:54,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1362 [2020-10-27 18:18:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:54,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:55,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:55,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:18:55,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:55,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-27 18:18:55,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:55,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:18:55,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:18:55,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 18:18:55,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:55,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1474 [2020-10-27 18:18:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:55,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:18:55,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:18:55,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 18:18:55,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:18:55,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 18:18:55,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:18:55,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:18:55,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 18:18:55,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:18:55,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:18:56,978 INFO L134 CoverageAnalysis]: Checked inductivity of 7711 backedges. 1242 proven. 104 refuted. 0 times theorem prover too weak. 6365 trivial. 0 not checked. [2020-10-27 18:18:56,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376827739] [2020-10-27 18:18:56,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:18:56,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:18:56,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095107582] [2020-10-27 18:18:56,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:18:56,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:18:56,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:18:56,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:18:56,981 INFO L87 Difference]: Start difference. First operand 4345 states and 4497 transitions. Second operand 7 states. [2020-10-27 18:18:58,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:18:58,972 INFO L93 Difference]: Finished difference Result 8502 states and 8804 transitions. [2020-10-27 18:18:58,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 18:18:58,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1585 [2020-10-27 18:18:58,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:18:58,979 INFO L225 Difference]: With dead ends: 8502 [2020-10-27 18:18:58,979 INFO L226 Difference]: Without dead ends: 4345 [2020-10-27 18:18:58,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:18:58,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4345 states. [2020-10-27 18:18:59,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4345 to 4345. [2020-10-27 18:18:59,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4345 states. [2020-10-27 18:18:59,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4345 states to 4345 states and 4491 transitions. [2020-10-27 18:18:59,056 INFO L78 Accepts]: Start accepts. Automaton has 4345 states and 4491 transitions. Word has length 1585 [2020-10-27 18:18:59,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:18:59,058 INFO L481 AbstractCegarLoop]: Abstraction has 4345 states and 4491 transitions. [2020-10-27 18:18:59,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:18:59,058 INFO L276 IsEmpty]: Start isEmpty. Operand 4345 states and 4491 transitions. [2020-10-27 18:18:59,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1678 [2020-10-27 18:18:59,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:18:59,090 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 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] [2020-10-27 18:18:59,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 18:18:59,090 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:18:59,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:18:59,091 INFO L82 PathProgramCache]: Analyzing trace with hash 363321896, now seen corresponding path program 1 times [2020-10-27 18:18:59,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:18:59,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659580006] [2020-10-27 18:18:59,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:18:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:18:59,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:19:00,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking...