/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/seq-mthreaded/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:13:35,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:13:35,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:13:35,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:13:35,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:13:35,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:13:35,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:13:35,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:13:35,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:13:35,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:13:35,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:13:35,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:13:35,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:13:35,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:13:35,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:13:35,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:13:35,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:13:35,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:13:35,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:13:35,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:13:35,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:13:35,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:13:35,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:13:35,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:13:35,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:13:35,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:13:35,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:13:35,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:13:35,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:13:35,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:13:35,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:13:35,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:13:35,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:13:35,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:13:35,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:13:35,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:13:35,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:13:35,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:13:35,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:13:35,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:13:35,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:13:35,430 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 23:13:35,480 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:13:35,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:13:35,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:13:35,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:13:35,486 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:13:35,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:13:35,487 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:13:35,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:13:35,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:13:35,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:13:35,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:13:35,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:13:35,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:13:35,490 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:13:35,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:13:35,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:13:35,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:13:35,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:13:35,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:13:35,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:13:35,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:13:35,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:13:35,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:13:35,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:13:35,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:13:35,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:13:35,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:13:35,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:13:35,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:13:35,493 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:13:36,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:13:36,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:13:36,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:13:36,086 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:13:36,086 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:13:36,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c [2020-10-27 23:13:36,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ce48d760/064f208d71e9439a9d1d99618a2cfe5a/FLAGbdfc691b2 [2020-10-27 23:13:36,927 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:13:36,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c [2020-10-27 23:13:36,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ce48d760/064f208d71e9439a9d1d99618a2cfe5a/FLAGbdfc691b2 [2020-10-27 23:13:37,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ce48d760/064f208d71e9439a9d1d99618a2cfe5a [2020-10-27 23:13:37,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:13:37,120 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:13:37,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:13:37,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:13:37,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:13:37,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:13:37" (1/1) ... [2020-10-27 23:13:37,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19be3450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:13:37, skipping insertion in model container [2020-10-27 23:13:37,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:13:37" (1/1) ... [2020-10-27 23:13:37,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:13:37,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:13:37,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:13:37,736 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:13:37,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:13:37,972 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:13:37,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:13:37 WrapperNode [2020-10-27 23:13:37,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:13:37,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:13:37,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:13:37,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:13:37,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:13:37" (1/1) ... [2020-10-27 23:13:37,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:13:37" (1/1) ... [2020-10-27 23:13:38,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:13:37" (1/1) ... [2020-10-27 23:13:38,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:13:37" (1/1) ... [2020-10-27 23:13:38,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:13:37" (1/1) ... [2020-10-27 23:13:38,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:13:37" (1/1) ... [2020-10-27 23:13:38,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:13:37" (1/1) ... [2020-10-27 23:13:38,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:13:38,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:13:38,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:13:38,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:13:38,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:13:37" (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 23:13:38,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:13:38,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:13:38,225 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:13:38,225 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:13:38,226 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 23:13:38,226 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 23:13:38,227 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 23:13:38,227 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 23:13:38,228 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-27 23:13:38,228 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 23:13:38,229 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 23:13:38,229 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:13:38,229 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 23:13:38,229 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:13:38,229 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:13:38,230 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:13:38,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:13:38,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:13:38,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:13:38,231 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:13:38,231 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:13:38,231 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:13:38,231 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:13:38,231 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:13:38,232 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:13:38,232 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:13:38,232 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:13:38,232 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 23:13:38,232 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:13:38,232 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:13:38,232 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:13:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:13:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:13:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:13:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:13:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:13:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:13:41,517 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:13:41,517 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 23:13:41,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:13:41 BoogieIcfgContainer [2020-10-27 23:13:41,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:13:41,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:13:41,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:13:41,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:13:41,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:13:37" (1/3) ... [2020-10-27 23:13:41,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67742dc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:13:41, skipping insertion in model container [2020-10-27 23:13:41,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:13:37" (2/3) ... [2020-10-27 23:13:41,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67742dc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:13:41, skipping insertion in model container [2020-10-27 23:13:41,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:13:41" (3/3) ... [2020-10-27 23:13:41,535 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c [2020-10-27 23:13:41,552 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:13:41,560 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:13:41,575 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:13:41,627 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:13:41,627 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:13:41,627 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:13:41,627 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:13:41,628 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:13:41,628 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:13:41,628 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:13:41,628 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:13:41,679 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states. [2020-10-27 23:13:41,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 23:13:41,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:13:41,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:41,729 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:13:41,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:13:41,738 INFO L82 PathProgramCache]: Analyzing trace with hash 449261534, now seen corresponding path program 1 times [2020-10-27 23:13:41,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:13:41,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90467629] [2020-10-27 23:13:41,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:13:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:42,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:46,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:46,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 23:13:46,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:46,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3911 [2020-10-27 23:13:46,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:46,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 23:13:46,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 23:13:46,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:13:46,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 23:13:48,140 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:13:48,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:13:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:48,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:48,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:48,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:13:48,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:48,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 23:13:48,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:48,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:13:48,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:13:48,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:13:48,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:48,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:13:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:48,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:48,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:48,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 23:13:48,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:48,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650 [2020-10-27 23:13:48,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:48,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:13:48,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:13:48,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 23:13:48,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:49,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 23:13:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:49,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:49,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:49,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:13:49,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:49,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:13:49,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:13:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 23:13:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:13:49,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:49,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 23:13:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:49,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:49,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:49,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:13:49,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:49,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:13:49,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:49,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:13:49,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:13:49,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:13:49,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:49,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 23:13:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:49,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:49,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:49,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:13:49,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:49,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:13:49,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:49,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:13:49,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:13:49,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:13:49,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:49,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-27 23:13:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:49,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:49,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:49,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:13:49,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:49,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:13:49,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:49,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:13:49,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:13:49,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:13:49,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:49,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-27 23:13:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:49,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:49,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:49,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:13:49,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:49,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:13:49,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:49,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:13:49,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:13:49,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:13:49,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:49,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-27 23:13:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:49,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:49,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:49,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:13:49,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:49,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:13:49,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:49,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:13:49,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:13:49,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:13:49,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:49,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-27 23:13:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:49,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:49,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:49,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:13:49,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:49,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:13:49,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:49,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:13:49,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:13:49,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:13:49,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:49,633 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 23:13:49,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90467629] [2020-10-27 23:13:49,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:13:49,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 23:13:49,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919391299] [2020-10-27 23:13:49,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 23:13:49,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:13:49,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 23:13:49,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-27 23:13:49,672 INFO L87 Difference]: Start difference. First operand 757 states. Second operand 14 states. [2020-10-27 23:14:00,338 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 23:14:01,587 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 23:14:03,023 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 23:14:04,244 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 23:14:05,469 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:14:06,411 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:14:07,539 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:14:08,602 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:14:09,650 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:14:11,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:14:11,403 INFO L93 Difference]: Finished difference Result 1052 states and 1849 transitions. [2020-10-27 23:14:11,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 23:14:11,405 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 188 [2020-10-27 23:14:11,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:14:11,445 INFO L225 Difference]: With dead ends: 1052 [2020-10-27 23:14:11,446 INFO L226 Difference]: Without dead ends: 825 [2020-10-27 23:14:11,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-27 23:14:11,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2020-10-27 23:14:11,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 749. [2020-10-27 23:14:11,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2020-10-27 23:14:11,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1303 transitions. [2020-10-27 23:14:11,794 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1303 transitions. Word has length 188 [2020-10-27 23:14:11,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:14:11,798 INFO L481 AbstractCegarLoop]: Abstraction has 749 states and 1303 transitions. [2020-10-27 23:14:11,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 23:14:11,798 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1303 transitions. [2020-10-27 23:14:11,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-27 23:14:11,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:14:11,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:14:11,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:14:11,810 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:14:11,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:14:11,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1537110298, now seen corresponding path program 1 times [2020-10-27 23:14:11,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:14:11,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139198380] [2020-10-27 23:14:11,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:14:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:12,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:12,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:13,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:13,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:16,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:16,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-27 23:14:16,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 23:14:16,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 23:14:16,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:16,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:14:16,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-27 23:14:16,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 23:14:16,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:14:18,071 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:14:18,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:14:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:18,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:18,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:18,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:14:18,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:18,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 23:14:18,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:18,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:18,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:18,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:18,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:18,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:14:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:18,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:18,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:18,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 23:14:18,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:18,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-27 23:14:18,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:18,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:14:18,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:18,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-27 23:14:18,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:18,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-27 23:14:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:18,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:18,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:18,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:14:18,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:18,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:14:18,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:18,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:14:18,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:18,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:14:18,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:18,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-27 23:14:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:18,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:18,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:18,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:18,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:18,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:14:18,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:18,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:14:18,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:18,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:14:18,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:18,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-27 23:14:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:18,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:18,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:18,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:18,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:18,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 23:14:18,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:18,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:14:18,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:18,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:14:18,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:18,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-27 23:14:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:18,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:18,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:18,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:18,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:18,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:14:18,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:18,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:14:18,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:18,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:14:18,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:18,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-27 23:14:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:18,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:18,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:18,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:18,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:18,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 23:14:18,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:18,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:14:18,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:14:18,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:14:18,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:18,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-27 23:14:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:18,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:18,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:18,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:18,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:18,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:14:18,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:18,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:18,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:14:18,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:18,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:18,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-27 23:14:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:19,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:19,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:19,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:14:19,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:19,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:14:19,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:19,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:19,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:14:19,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:19,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:19,168 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 23:14:19,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139198380] [2020-10-27 23:14:19,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:14:19,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:14:19,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625828886] [2020-10-27 23:14:19,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:14:19,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:14:19,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:14:19,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:14:19,176 INFO L87 Difference]: Start difference. First operand 749 states and 1303 transitions. Second operand 11 states. [2020-10-27 23:14:20,366 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:14:27,653 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:14:28,435 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:14:29,348 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:14:30,259 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:14:31,001 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:14:31,629 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:14:31,922 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:14:33,728 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:14:34,305 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:14:34,933 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:14:36,334 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:14:36,653 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:14:37,124 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:14:37,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:14:37,176 INFO L93 Difference]: Finished difference Result 1284 states and 2188 transitions. [2020-10-27 23:14:37,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 23:14:37,177 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 232 [2020-10-27 23:14:37,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:14:37,190 INFO L225 Difference]: With dead ends: 1284 [2020-10-27 23:14:37,192 INFO L226 Difference]: Without dead ends: 1078 [2020-10-27 23:14:37,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:14:37,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2020-10-27 23:14:37,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 942. [2020-10-27 23:14:37,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 942 states. [2020-10-27 23:14:37,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1621 transitions. [2020-10-27 23:14:37,402 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1621 transitions. Word has length 232 [2020-10-27 23:14:37,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:14:37,407 INFO L481 AbstractCegarLoop]: Abstraction has 942 states and 1621 transitions. [2020-10-27 23:14:37,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:14:37,407 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1621 transitions. [2020-10-27 23:14:37,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-27 23:14:37,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:14:37,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:14:37,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:14:37,413 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:14:37,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:14:37,414 INFO L82 PathProgramCache]: Analyzing trace with hash -262516082, now seen corresponding path program 1 times [2020-10-27 23:14:37,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:14:37,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619770411] [2020-10-27 23:14:37,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:14:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:37,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:37,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:38,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:38,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:39,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:39,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:40,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:42,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:42,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-27 23:14:42,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:14:42,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-27 23:14:42,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:42,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:14:42,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-27 23:14:42,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 23:14:42,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:43,834 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:14:43,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:14:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:43,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:43,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:43,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:14:43,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:43,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 23:14:43,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:43,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:43,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:43,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:43,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:43,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:14:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:43,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:44,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:44,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 23:14:44,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:44,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-27 23:14:44,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:44,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:14:44,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:44,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-27 23:14:44,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:44,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-27 23:14:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:44,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:44,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:44,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:14:44,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:44,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:14:44,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:44,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:14:44,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:44,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:14:44,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:44,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-27 23:14:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:44,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:44,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:44,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:44,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:44,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:14:44,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:44,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:14:44,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:44,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:14:44,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:44,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-27 23:14:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:44,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:44,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:44,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:44,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:44,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:14:44,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:44,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:14:44,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:44,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:14:44,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:44,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-27 23:14:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:44,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:44,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:44,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:44,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:44,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:14:44,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:44,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:14:44,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:14:44,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:14:44,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:44,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-27 23:14:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:44,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:44,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:44,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:14:44,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:44,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:14:44,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:44,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:44,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:14:44,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:44,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:44,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-27 23:14:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:44,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:44,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:44,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:44,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:44,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:14:44,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:44,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:44,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:14:44,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:44,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:44,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-27 23:14:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:44,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:44,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:44,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:14:44,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:44,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:14:44,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:14:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:44,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:44,732 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 23:14:44,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619770411] [2020-10-27 23:14:44,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:14:44,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:14:44,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383791430] [2020-10-27 23:14:44,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:14:44,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:14:44,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:14:44,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:14:44,735 INFO L87 Difference]: Start difference. First operand 942 states and 1621 transitions. Second operand 11 states. [2020-10-27 23:14:45,906 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:14:53,377 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:14:54,141 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:14:55,046 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:14:55,827 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:14:56,508 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:14:56,826 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:14:58,079 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:14:58,405 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:00,385 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:01,015 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:02,542 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:15:02,878 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:15:03,343 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:15:03,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:15:03,412 INFO L93 Difference]: Finished difference Result 1986 states and 3347 transitions. [2020-10-27 23:15:03,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 23:15:03,412 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 236 [2020-10-27 23:15:03,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:15:03,422 INFO L225 Difference]: With dead ends: 1986 [2020-10-27 23:15:03,422 INFO L226 Difference]: Without dead ends: 1587 [2020-10-27 23:15:03,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:15:03,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2020-10-27 23:15:03,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1318. [2020-10-27 23:15:03,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1318 states. [2020-10-27 23:15:03,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 2237 transitions. [2020-10-27 23:15:03,667 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 2237 transitions. Word has length 236 [2020-10-27 23:15:03,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:15:03,667 INFO L481 AbstractCegarLoop]: Abstraction has 1318 states and 2237 transitions. [2020-10-27 23:15:03,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:15:03,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 2237 transitions. [2020-10-27 23:15:03,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-27 23:15:03,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:15:03,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:15:03,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:15:03,673 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:15:03,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:15:03,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1308887334, now seen corresponding path program 1 times [2020-10-27 23:15:03,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:15:03,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858762942] [2020-10-27 23:15:03,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:15:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:03,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:03,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:04,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:05,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:05,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:06,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:06,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:07,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:07,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:08,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:08,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:08,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-27 23:15:08,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:15:08,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-27 23:15:08,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:08,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:15:08,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-27 23:15:08,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 23:15:08,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:09,908 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:15:09,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:15:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:09,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:09,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:09,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:15:09,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:09,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 23:15:09,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:09,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:09,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:09,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:09,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:09,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:15:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:10,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:10,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:10,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 23:15:10,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:10,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-27 23:15:10,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:10,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:10,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:10,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-27 23:15:10,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:10,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-27 23:15:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:10,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:10,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:10,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:15:10,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:10,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:15:10,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:10,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:10,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:10,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:15:10,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:10,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-27 23:15:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:10,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:10,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:10,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:10,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:10,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:15:10,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:15:10,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:10,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-27 23:15:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:10,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:10,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:10,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:10,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:10,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:15:10,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:10,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:15:10,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:15:10,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:15:10,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:10,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-27 23:15:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:10,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:10,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:10,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:15:10,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:10,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:15:10,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:10,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:10,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:15:10,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:10,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:10,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-27 23:15:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:10,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:10,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:10,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:15:10,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:10,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:15:10,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:10,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:10,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:15:10,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:10,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:10,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-27 23:15:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:10,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:10,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:10,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:10,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:10,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:15:10,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:10,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:10,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:10,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:10,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:10,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-27 23:15:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:10,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:10,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:10,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:15:10,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:10,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:15:10,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:10,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:10,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:15:10,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:10,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:10,796 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 23:15:10,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858762942] [2020-10-27 23:15:10,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:15:10,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:15:10,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710226852] [2020-10-27 23:15:10,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:15:10,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:15:10,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:15:10,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:15:10,799 INFO L87 Difference]: Start difference. First operand 1318 states and 2237 transitions. Second operand 11 states. [2020-10-27 23:15:11,949 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:15:18,974 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:15:19,750 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:20,487 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:15:21,097 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:15:21,415 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:22,667 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:15:22,989 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:24,246 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:15:24,568 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:26,545 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:28,068 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:15:28,418 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:15:28,900 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:15:28,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:15:28,992 INFO L93 Difference]: Finished difference Result 3360 states and 5605 transitions. [2020-10-27 23:15:28,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 23:15:28,996 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 240 [2020-10-27 23:15:28,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:15:29,012 INFO L225 Difference]: With dead ends: 3360 [2020-10-27 23:15:29,012 INFO L226 Difference]: Without dead ends: 2585 [2020-10-27 23:15:29,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:15:29,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2585 states. [2020-10-27 23:15:29,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2585 to 2050. [2020-10-27 23:15:29,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2050 states. [2020-10-27 23:15:29,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 3429 transitions. [2020-10-27 23:15:29,278 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 3429 transitions. Word has length 240 [2020-10-27 23:15:29,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:15:29,279 INFO L481 AbstractCegarLoop]: Abstraction has 2050 states and 3429 transitions. [2020-10-27 23:15:29,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:15:29,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 3429 transitions. [2020-10-27 23:15:29,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-27 23:15:29,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:15:29,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:15:29,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:15:29,286 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:15:29,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:15:29,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1279754034, now seen corresponding path program 1 times [2020-10-27 23:15:29,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:15:29,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524746328] [2020-10-27 23:15:29,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:15:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:29,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:29,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:29,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:30,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:30,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:32,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:32,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:32,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:33,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:33,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:33,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:34,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:34,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:34,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-27 23:15:34,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:15:34,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-27 23:15:34,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:34,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:15:34,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 23:15:34,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 23:15:34,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:35,620 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:15:35,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:15:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:35,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:35,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:35,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:15:35,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:35,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:15:35,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:35,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:35,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:35,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:35,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:35,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:15:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:35,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:35,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:35,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 23:15:35,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:35,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-27 23:15:35,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:35,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:35,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:35,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 23:15:35,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:35,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-27 23:15:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:35,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:35,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:35,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:15:35,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:35,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:15:35,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:35,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:35,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:35,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:15:35,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:35,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-27 23:15:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:35,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:35,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:35,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:35,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:35,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:15:35,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:35,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:15:35,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:15:35,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:15:35,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:36,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-27 23:15:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:36,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:36,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:36,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:15:36,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:36,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:15:36,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:36,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:36,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:15:36,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:36,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:36,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-27 23:15:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:36,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:36,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:36,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:15:36,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:36,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:15:36,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:36,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:36,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:15:36,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:36,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:36,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-27 23:15:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:36,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:36,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:36,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:15:36,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:36,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:15:36,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:36,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:36,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:15:36,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:36,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:36,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-27 23:15:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:36,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:36,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:36,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:36,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:36,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:15:36,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:36,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:36,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:36,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:36,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:36,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-27 23:15:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:36,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:36,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:36,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:15:36,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:36,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:15:36,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:36,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:36,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:15:36,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:36,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:36,376 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 23:15:36,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524746328] [2020-10-27 23:15:36,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:15:36,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:15:36,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950655883] [2020-10-27 23:15:36,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:15:36,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:15:36,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:15:36,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:15:36,378 INFO L87 Difference]: Start difference. First operand 2050 states and 3429 transitions. Second operand 11 states. [2020-10-27 23:15:37,674 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:15:44,419 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:44,976 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:15:45,634 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:15:45,928 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:47,072 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:15:47,372 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:48,525 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:15:48,821 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:49,968 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:15:50,265 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:52,489 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 23:15:53,288 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:15:53,707 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:15:53,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:15:53,858 INFO L93 Difference]: Finished difference Result 6088 states and 10065 transitions. [2020-10-27 23:15:53,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 23:15:53,858 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 244 [2020-10-27 23:15:53,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:15:53,883 INFO L225 Difference]: With dead ends: 6088 [2020-10-27 23:15:53,883 INFO L226 Difference]: Without dead ends: 4581 [2020-10-27 23:15:53,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:15:53,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4581 states. [2020-10-27 23:15:54,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4581 to 3458. [2020-10-27 23:15:54,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3458 states. [2020-10-27 23:15:54,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 5669 transitions. [2020-10-27 23:15:54,271 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 5669 transitions. Word has length 244 [2020-10-27 23:15:54,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:15:54,306 INFO L481 AbstractCegarLoop]: Abstraction has 3458 states and 5669 transitions. [2020-10-27 23:15:54,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:15:54,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 5669 transitions. [2020-10-27 23:15:54,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-27 23:15:54,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:15:54,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:15:54,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:15:54,319 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:15:54,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:15:54,321 INFO L82 PathProgramCache]: Analyzing trace with hash -811462298, now seen corresponding path program 1 times [2020-10-27 23:15:54,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:15:54,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721397598] [2020-10-27 23:15:54,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:15:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:54,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:54,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:54,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:55,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:55,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:55,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:55,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:56,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:56,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:59,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:59,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 23:15:59,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:15:59,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 23:15:59,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:59,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:15:59,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-27 23:15:59,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 23:15:59,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:00,533 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:16:00,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:16:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:00,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:00,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:00,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:16:00,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:00,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:16:00,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:00,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:00,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:00,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:00,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:00,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:16:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:00,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:00,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:00,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 23:16:00,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:00,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-27 23:16:00,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-27 23:16:00,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:00,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-27 23:16:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:00,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:00,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:00,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:16:00,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:00,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:16:00,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:00,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:00,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:00,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:16:00,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:00,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-27 23:16:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:00,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:00,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:00,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:16:00,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:00,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:16:00,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:16:00,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:00,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-27 23:16:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:00,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:00,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:00,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:16:00,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:00,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:16:00,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:00,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:00,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:00,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:16:00,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:01,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-27 23:16:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:01,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:01,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:01,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:16:01,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:01,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:16:01,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:01,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:01,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:01,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:16:01,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:01,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-27 23:16:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:01,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:01,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:01,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:16:01,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:01,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:16:01,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:01,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:16:01,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:01,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-27 23:16:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:01,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:01,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:01,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:16:01,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:01,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:16:01,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:01,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:16:01,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:16:01,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:16:01,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:01,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-27 23:16:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:01,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:01,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:01,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:16:01,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:01,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 23:16:01,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:01,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:01,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:16:01,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:01,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:01,321 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 23:16:01,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721397598] [2020-10-27 23:16:01,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:16:01,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:16:01,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142802807] [2020-10-27 23:16:01,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:16:01,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:16:01,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:16:01,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:16:01,324 INFO L87 Difference]: Start difference. First operand 3458 states and 5669 transitions. Second operand 11 states. [2020-10-27 23:16:02,442 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:16:09,234 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:10,083 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:10,920 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:11,755 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:12,640 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:13,231 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:16:14,651 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:15,262 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:15,937 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:16,565 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:17,984 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:16:18,297 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:16:18,746 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:16:18,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:16:18,806 INFO L93 Difference]: Finished difference Result 11256 states and 18361 transitions. [2020-10-27 23:16:18,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 23:16:18,814 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 248 [2020-10-27 23:16:18,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:16:18,855 INFO L225 Difference]: With dead ends: 11256 [2020-10-27 23:16:18,855 INFO L226 Difference]: Without dead ends: 8341 [2020-10-27 23:16:18,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:16:18,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8341 states. [2020-10-27 23:16:19,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8341 to 6210. [2020-10-27 23:16:19,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6210 states. [2020-10-27 23:16:19,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6210 states to 6210 states and 10053 transitions. [2020-10-27 23:16:19,567 INFO L78 Accepts]: Start accepts. Automaton has 6210 states and 10053 transitions. Word has length 248 [2020-10-27 23:16:19,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:16:19,567 INFO L481 AbstractCegarLoop]: Abstraction has 6210 states and 10053 transitions. [2020-10-27 23:16:19,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:16:19,567 INFO L276 IsEmpty]: Start isEmpty. Operand 6210 states and 10053 transitions. [2020-10-27 23:16:19,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-27 23:16:19,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:16:19,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:16:19,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:16:19,578 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:16:19,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:16:19,579 INFO L82 PathProgramCache]: Analyzing trace with hash -653280130, now seen corresponding path program 1 times [2020-10-27 23:16:19,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:16:19,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452305730] [2020-10-27 23:16:19,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:16:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:19,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:19,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:20,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:20,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:20,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:20,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:20,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:21,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:24,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:24,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-27 23:16:24,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:16:24,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 23:16:24,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:24,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:16:24,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:16:24,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-27 23:16:24,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:25,839 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:16:25,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:16:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:25,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:25,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:25,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:16:25,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:25,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:16:25,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:25,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:25,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:25,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:25,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:25,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:16:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:25,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:26,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:26,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 23:16:26,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:26,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-27 23:16:26,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:26,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:16:26,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:26,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 23:16:26,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:26,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-27 23:16:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:26,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:26,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:26,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:16:26,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:26,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:16:26,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:26,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:26,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:26,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:16:26,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:26,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-27 23:16:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:26,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:26,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:26,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:16:26,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:26,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:16:26,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:26,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:26,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:16:26,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:16:26,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:26,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-27 23:16:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:26,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:26,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:26,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:16:26,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:26,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:16:26,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:26,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:26,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:16:26,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:26,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:26,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-27 23:16:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:26,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:26,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:26,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:16:26,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:26,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:16:26,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:26,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:26,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:16:26,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:26,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:26,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-27 23:16:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:26,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:26,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:26,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:16:26,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:26,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:16:26,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:26,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:26,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:16:26,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:26,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:26,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-27 23:16:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:26,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:26,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:26,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:16:26,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:26,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:16:26,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:16:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:26,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:26,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-27 23:16:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:26,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:26,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:26,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:16:26,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:26,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 23:16:26,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:16:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:26,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:26,886 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 23:16:26,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452305730] [2020-10-27 23:16:26,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:16:26,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:16:26,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806993457] [2020-10-27 23:16:26,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:16:26,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:16:26,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:16:26,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:16:26,889 INFO L87 Difference]: Start difference. First operand 6210 states and 10053 transitions. Second operand 11 states. [2020-10-27 23:16:28,067 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 23:16:29,277 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 410 [2020-10-27 23:16:30,544 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-27 23:16:34,118 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 412 DAG size of output: 408 [2020-10-27 23:16:51,998 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 23:16:52,575 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:16:53,049 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:53,936 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:16:55,091 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:16:55,570 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:16:56,015 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:57,628 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:16:58,048 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:16:58,443 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:00,021 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:17:00,412 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:17:00,752 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:02,042 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:17:02,457 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:17:02,809 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:05,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:17:05,505 INFO L93 Difference]: Finished difference Result 24846 states and 40768 transitions. [2020-10-27 23:17:05,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 23:17:05,507 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 252 [2020-10-27 23:17:05,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:17:05,579 INFO L225 Difference]: With dead ends: 24846 [2020-10-27 23:17:05,580 INFO L226 Difference]: Without dead ends: 18695 [2020-10-27 23:17:05,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-27 23:17:05,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18695 states. [2020-10-27 23:17:06,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18695 to 14150. [2020-10-27 23:17:06,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14150 states. [2020-10-27 23:17:06,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14150 states to 14150 states and 22895 transitions. [2020-10-27 23:17:06,993 INFO L78 Accepts]: Start accepts. Automaton has 14150 states and 22895 transitions. Word has length 252 [2020-10-27 23:17:06,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:17:06,993 INFO L481 AbstractCegarLoop]: Abstraction has 14150 states and 22895 transitions. [2020-10-27 23:17:06,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:17:06,993 INFO L276 IsEmpty]: Start isEmpty. Operand 14150 states and 22895 transitions. [2020-10-27 23:17:07,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-27 23:17:07,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:17:07,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:17:07,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:17:07,011 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:17:07,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:17:07,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1123025265, now seen corresponding path program 1 times [2020-10-27 23:17:07,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:17:07,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574268832] [2020-10-27 23:17:07,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:17:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:07,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:07,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:07,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:07,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:08,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:08,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:09,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:09,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:10,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:12,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:12,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-27 23:17:12,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:17:12,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 23:17:12,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:12,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 23:17:12,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-27 23:17:12,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 23:17:12,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:13,229 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:17:13,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:17:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:13,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:13,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:13,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:17:13,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:13,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 23:17:13,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:13,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:17:13,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:13,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:17:13,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:13,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:17:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:13,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking...