/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:14:46,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:14:46,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:14:46,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:14:46,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:14:46,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:14:46,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:14:46,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:14:46,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:14:46,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:14:46,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:14:46,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:14:46,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:14:46,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:14:46,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:14:46,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:14:46,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:14:46,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:14:46,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:14:46,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:14:46,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:14:46,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:14:46,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:14:46,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:14:46,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:14:46,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:14:46,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:14:46,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:14:46,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:14:46,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:14:46,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:14:46,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:14:46,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:14:46,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:14:46,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:14:46,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:14:46,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:14:46,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:14:46,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:14:46,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:14:46,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:14:46,418 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 08:14:46,445 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:14:46,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:14:46,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:14:46,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:14:46,447 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:14:46,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:14:46,448 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:14:46,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:14:46,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:14:46,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:14:46,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:14:46,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:14:46,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:14:46,449 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:14:46,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:14:46,450 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:14:46,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:14:46,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:14:46,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:14:46,450 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:14:46,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:14:46,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:14:46,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:14:46,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:14:46,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:14:46,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:14:46,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:14:46,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:14:46,452 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:14:46,453 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:14:46,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:14:46,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:14:46,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:14:46,862 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:14:46,862 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:14:46,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label19.c [2020-10-29 08:14:46,934 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8325fc66/610d5e571a414aa98599b5047662aa97/FLAGa505f2765 [2020-10-29 08:14:47,884 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:14:47,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label19.c [2020-10-29 08:14:47,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8325fc66/610d5e571a414aa98599b5047662aa97/FLAGa505f2765 [2020-10-29 08:14:48,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8325fc66/610d5e571a414aa98599b5047662aa97 [2020-10-29 08:14:48,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:14:48,432 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:14:48,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:14:48,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:14:48,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:14:48,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:14:48" (1/1) ... [2020-10-29 08:14:48,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61d774bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:48, skipping insertion in model container [2020-10-29 08:14:48,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:14:48" (1/1) ... [2020-10-29 08:14:48,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:14:48,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:14:49,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:14:49,567 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:14:50,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:14:50,064 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:14:50,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:50 WrapperNode [2020-10-29 08:14:50,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:14:50,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:14:50,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:14:50,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:14:50,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:50" (1/1) ... [2020-10-29 08:14:50,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:50" (1/1) ... [2020-10-29 08:14:50,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:50" (1/1) ... [2020-10-29 08:14:50,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:50" (1/1) ... [2020-10-29 08:14:50,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:50" (1/1) ... [2020-10-29 08:14:50,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:50" (1/1) ... [2020-10-29 08:14:50,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:50" (1/1) ... [2020-10-29 08:14:50,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:14:50,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:14:50,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:14:50,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:14:50,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:14:50,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:14:50,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:14:50,521 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:14:50,521 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:14:50,521 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:14:50,521 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:14:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:14:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:14:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:14:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:14:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:14:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:14:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:14:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:14:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:14:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:14:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:14:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:14:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:14:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:14:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:14:59,696 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:14:59,697 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:14:59,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:14:59 BoogieIcfgContainer [2020-10-29 08:14:59,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:14:59,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:14:59,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:14:59,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:14:59,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:14:48" (1/3) ... [2020-10-29 08:14:59,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@211f107a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:14:59, skipping insertion in model container [2020-10-29 08:14:59,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:50" (2/3) ... [2020-10-29 08:14:59,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@211f107a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:14:59, skipping insertion in model container [2020-10-29 08:14:59,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:14:59" (3/3) ... [2020-10-29 08:14:59,713 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label19.c [2020-10-29 08:14:59,729 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:14:59,735 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:14:59,749 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:14:59,793 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:14:59,794 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:14:59,794 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:14:59,794 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:14:59,794 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:14:59,794 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:14:59,794 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:14:59,795 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:14:59,839 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:14:59,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 08:14:59,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:14:59,850 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] [2020-10-29 08:14:59,850 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:14:59,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:14:59,859 INFO L82 PathProgramCache]: Analyzing trace with hash -307584301, now seen corresponding path program 1 times [2020-10-29 08:14:59,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:14:59,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834349019] [2020-10-29 08:14:59,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:15:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:00,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:00,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:00,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 08:15:00,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:00,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-10-29 08:15:00,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:00,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:00,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:15:00,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:15:00,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 08:15:00,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:15:00,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:15:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:00,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:01,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:01,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:15:01,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:01,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 08:15:01,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:01,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:01,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:01,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:01,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:15:01,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:15:01,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:15:01,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834349019] [2020-10-29 08:15:01,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:15:01,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:15:01,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460560956] [2020-10-29 08:15:01,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:15:01,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:15:01,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:15:01,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:15:01,061 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-29 08:15:12,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:15:12,129 INFO L93 Difference]: Finished difference Result 1697 states and 3097 transitions. [2020-10-29 08:15:12,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:15:12,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-10-29 08:15:12,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:15:12,168 INFO L225 Difference]: With dead ends: 1697 [2020-10-29 08:15:12,169 INFO L226 Difference]: Without dead ends: 1013 [2020-10-29 08:15:12,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:15:12,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-10-29 08:15:12,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1003. [2020-10-29 08:15:12,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-29 08:15:12,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1543 transitions. [2020-10-29 08:15:12,341 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1543 transitions. Word has length 49 [2020-10-29 08:15:12,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:15:12,343 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1543 transitions. [2020-10-29 08:15:12,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:15:12,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1543 transitions. [2020-10-29 08:15:12,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 08:15:12,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:15:12,356 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:15:12,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:15:12,357 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:15:12,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:15:12,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1050308558, now seen corresponding path program 1 times [2020-10-29 08:15:12,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:15:12,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639104243] [2020-10-29 08:15:12,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:15:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:12,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:12,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:13,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:13,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:13,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 08:15:13,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:15:13,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1553 [2020-10-29 08:15:13,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:13,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:13,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:15:13,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:15:13,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 08:15:13,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:15:14,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:15:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:14,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:14,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:14,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:15:14,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:14,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 08:15:14,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:14,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:14,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:14,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:14,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:15:14,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:15:14,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:15:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:14,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:14,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:14,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:14,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:15:14,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:15:14,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-29 08:15:14,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:14,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:15:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:15:14,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:15:14,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:15:14,557 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 08:15:14,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639104243] [2020-10-29 08:15:14,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:15:14,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:15:14,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346848909] [2020-10-29 08:15:14,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:15:14,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:15:14,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:15:14,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:15:14,566 INFO L87 Difference]: Start difference. First operand 1003 states and 1543 transitions. Second operand 6 states. [2020-10-29 08:15:30,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:15:30,219 INFO L93 Difference]: Finished difference Result 2931 states and 4542 transitions. [2020-10-29 08:15:30,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:15:30,222 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-10-29 08:15:30,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:15:30,236 INFO L225 Difference]: With dead ends: 2931 [2020-10-29 08:15:30,236 INFO L226 Difference]: Without dead ends: 1934 [2020-10-29 08:15:30,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:15:30,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2020-10-29 08:15:30,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 1927. [2020-10-29 08:15:30,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1927 states. [2020-10-29 08:15:30,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 2596 transitions. [2020-10-29 08:15:30,329 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 2596 transitions. Word has length 120 [2020-10-29 08:15:30,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:15:30,331 INFO L481 AbstractCegarLoop]: Abstraction has 1927 states and 2596 transitions. [2020-10-29 08:15:30,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:15:30,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 2596 transitions. [2020-10-29 08:15:30,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 08:15:30,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:15:30,338 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:15:30,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:15:30,338 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:15:30,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:15:30,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1945568985, now seen corresponding path program 1 times [2020-10-29 08:15:30,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:15:30,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502744210] [2020-10-29 08:15:30,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:15:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:30,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:30,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:31,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:31,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 08:15:31,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:15:31,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1142 [2020-10-29 08:15:31,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:31,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:31,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:15:31,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:15:31,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 08:15:31,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:31,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:15:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:31,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:31,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:31,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:15:31,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:31,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:15:31,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:31,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:31,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:31,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:31,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:15:31,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:31,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:15:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:31,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:32,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:32,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:15:32,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:32,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 08:15:32,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:32,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:32,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:15:32,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:15:32,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 08:15:32,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:32,455 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 26 [2020-10-29 08:15:32,724 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:15:32,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502744210] [2020-10-29 08:15:32,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:15:32,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:15:32,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877287196] [2020-10-29 08:15:32,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:15:32,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:15:32,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:15:32,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:15:32,727 INFO L87 Difference]: Start difference. First operand 1927 states and 2596 transitions. Second operand 8 states. [2020-10-29 08:15:33,567 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 78 [2020-10-29 08:15:34,174 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 69 [2020-10-29 08:15:51,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:15:51,127 INFO L93 Difference]: Finished difference Result 4364 states and 5758 transitions. [2020-10-29 08:15:51,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:15:51,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-10-29 08:15:51,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:15:51,145 INFO L225 Difference]: With dead ends: 4364 [2020-10-29 08:15:51,146 INFO L226 Difference]: Without dead ends: 2409 [2020-10-29 08:15:51,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:15:51,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2409 states. [2020-10-29 08:15:51,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2409 to 2384. [2020-10-29 08:15:51,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2384 states. [2020-10-29 08:15:51,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2384 states to 2384 states and 3076 transitions. [2020-10-29 08:15:51,245 INFO L78 Accepts]: Start accepts. Automaton has 2384 states and 3076 transitions. Word has length 123 [2020-10-29 08:15:51,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:15:51,252 INFO L481 AbstractCegarLoop]: Abstraction has 2384 states and 3076 transitions. [2020-10-29 08:15:51,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:15:51,252 INFO L276 IsEmpty]: Start isEmpty. Operand 2384 states and 3076 transitions. [2020-10-29 08:15:51,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-29 08:15:51,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:15:51,262 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:15:51,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:15:51,262 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:15:51,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:15:51,263 INFO L82 PathProgramCache]: Analyzing trace with hash -2034869038, now seen corresponding path program 1 times [2020-10-29 08:15:51,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:15:51,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212065132] [2020-10-29 08:15:51,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:15:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:51,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:51,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:51,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 08:15:51,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:51,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-29 08:15:51,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:51,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:51,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:15:51,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:15:51,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 08:15:51,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:51,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:15:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:51,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:51,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:51,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:15:51,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:51,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:15:51,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:51,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:51,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:15:51,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:51,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:15:51,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:51,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:15:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:51,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:51,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:51,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:15:51,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:51,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 08:15:51,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:51,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:51,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:51,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:51,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:15:51,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:15:52,035 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:15:52,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212065132] [2020-10-29 08:15:52,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:15:52,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:15:52,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559500401] [2020-10-29 08:15:52,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:15:52,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:15:52,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:15:52,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:15:52,045 INFO L87 Difference]: Start difference. First operand 2384 states and 3076 transitions. Second operand 5 states. [2020-10-29 08:16:03,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:16:03,870 INFO L93 Difference]: Finished difference Result 6118 states and 8229 transitions. [2020-10-29 08:16:03,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:16:03,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-10-29 08:16:03,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:16:03,898 INFO L225 Difference]: With dead ends: 6118 [2020-10-29 08:16:03,898 INFO L226 Difference]: Without dead ends: 4173 [2020-10-29 08:16:03,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:16:03,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4173 states. [2020-10-29 08:16:04,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4173 to 4168. [2020-10-29 08:16:04,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4168 states. [2020-10-29 08:16:04,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4168 states to 4168 states and 5538 transitions. [2020-10-29 08:16:04,035 INFO L78 Accepts]: Start accepts. Automaton has 4168 states and 5538 transitions. Word has length 136 [2020-10-29 08:16:04,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:16:04,036 INFO L481 AbstractCegarLoop]: Abstraction has 4168 states and 5538 transitions. [2020-10-29 08:16:04,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:16:04,037 INFO L276 IsEmpty]: Start isEmpty. Operand 4168 states and 5538 transitions. [2020-10-29 08:16:04,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-29 08:16:04,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:16:04,041 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:16:04,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:16:04,041 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:16:04,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:16:04,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1827020461, now seen corresponding path program 1 times [2020-10-29 08:16:04,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:16:04,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109370067] [2020-10-29 08:16:04,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:16:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:04,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:04,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:05,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:06,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:06,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-29 08:16:06,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:16:06,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2461 [2020-10-29 08:16:06,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:06,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:06,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 08:16:06,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:16:06,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-29 08:16:06,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:06,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:16:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:06,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:06,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:06,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:16:06,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:06,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:16:06,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:06,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:06,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:16:06,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:16:06,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:16:06,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:06,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:16:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:06,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:07,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:07,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:16:07,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:07,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 08:16:07,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:07,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:07,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:16:07,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:16:07,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:16:07,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:07,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:16:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:07,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:07,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:07,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:16:07,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:07,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 08:16:07,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:07,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:07,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:16:07,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:16:07,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:16:07,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:16:07,358 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 6 proven. 78 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 08:16:07,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109370067] [2020-10-29 08:16:07,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:16:07,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:16:07,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363428609] [2020-10-29 08:16:07,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:16:07,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:16:07,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:16:07,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:16:07,361 INFO L87 Difference]: Start difference. First operand 4168 states and 5538 transitions. Second operand 8 states. [2020-10-29 08:16:30,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:16:30,836 INFO L93 Difference]: Finished difference Result 11208 states and 16676 transitions. [2020-10-29 08:16:30,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 08:16:30,838 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 207 [2020-10-29 08:16:30,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:16:30,885 INFO L225 Difference]: With dead ends: 11208 [2020-10-29 08:16:30,885 INFO L226 Difference]: Without dead ends: 7479 [2020-10-29 08:16:30,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-29 08:16:30,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7479 states. [2020-10-29 08:16:31,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7479 to 6956. [2020-10-29 08:16:31,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6956 states. [2020-10-29 08:16:31,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6956 states to 6956 states and 9854 transitions. [2020-10-29 08:16:31,118 INFO L78 Accepts]: Start accepts. Automaton has 6956 states and 9854 transitions. Word has length 207 [2020-10-29 08:16:31,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:16:31,119 INFO L481 AbstractCegarLoop]: Abstraction has 6956 states and 9854 transitions. [2020-10-29 08:16:31,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:16:31,119 INFO L276 IsEmpty]: Start isEmpty. Operand 6956 states and 9854 transitions. [2020-10-29 08:16:31,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-29 08:16:31,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:16:31,124 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:16:31,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:16:31,125 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:16:31,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:16:31,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1628028415, now seen corresponding path program 1 times [2020-10-29 08:16:31,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:16:31,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60254809] [2020-10-29 08:16:31,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:16:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:31,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:31,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:32,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:32,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:32,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-29 08:16:32,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:16:32,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1757 [2020-10-29 08:16:32,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:32,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:32,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:16:32,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:16:32,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 08:16:32,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:16:33,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:16:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:33,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:33,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:33,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:16:33,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:33,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:16:33,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:33,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:33,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:16:33,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:16:33,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:16:33,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:16:33,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:16:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:33,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:33,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:33,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:16:33,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:33,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 08:16:33,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:33,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:16:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:16:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:16:33,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:33,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:16:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:33,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:33,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:33,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 08:16:33,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:33,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 08:16:33,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:33,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:33,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:16:33,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:16:33,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 08:16:33,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:33,566 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:16:33,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60254809] [2020-10-29 08:16:33,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:16:33,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:16:33,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965058696] [2020-10-29 08:16:33,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:16:33,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:16:33,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:16:33,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:16:33,572 INFO L87 Difference]: Start difference. First operand 6956 states and 9854 transitions. Second operand 7 states. [2020-10-29 08:16:56,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:16:56,484 INFO L93 Difference]: Finished difference Result 19050 states and 29765 transitions. [2020-10-29 08:16:56,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:16:56,486 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-10-29 08:16:56,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:16:56,564 INFO L225 Difference]: With dead ends: 19050 [2020-10-29 08:16:56,565 INFO L226 Difference]: Without dead ends: 12533 [2020-10-29 08:16:56,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:16:56,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12533 states. [2020-10-29 08:16:57,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12533 to 12464. [2020-10-29 08:16:57,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12464 states. [2020-10-29 08:16:57,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12464 states to 12464 states and 18134 transitions. [2020-10-29 08:16:57,090 INFO L78 Accepts]: Start accepts. Automaton has 12464 states and 18134 transitions. Word has length 213 [2020-10-29 08:16:57,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:16:57,091 INFO L481 AbstractCegarLoop]: Abstraction has 12464 states and 18134 transitions. [2020-10-29 08:16:57,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:16:57,091 INFO L276 IsEmpty]: Start isEmpty. Operand 12464 states and 18134 transitions. [2020-10-29 08:16:57,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-29 08:16:57,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:16:57,096 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:16:57,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:16:57,096 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:16:57,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:16:57,099 INFO L82 PathProgramCache]: Analyzing trace with hash -708617371, now seen corresponding path program 1 times [2020-10-29 08:16:57,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:16:57,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345398990] [2020-10-29 08:16:57,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:16:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:57,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:57,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:57,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:02,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:02,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-29 08:17:02,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:17:02,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 08:17:02,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:02,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:02,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:17:02,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:17:02,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 08:17:02,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:02,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:17:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:02,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:02,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:02,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:17:02,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:02,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:17:02,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:02,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:17:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:17:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:17:02,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:02,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:17:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:02,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:02,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:02,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:17:02,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:02,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 08:17:02,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:02,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:02,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:17:02,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:17:02,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:17:02,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:02,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:17:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:02,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:02,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:02,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:02,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:17:02,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:17:02,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-29 08:17:02,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:02,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:02,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:17:02,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:17:02,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:17:02,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:02,797 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:17:02,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345398990] [2020-10-29 08:17:02,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:17:02,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:17:02,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678302950] [2020-10-29 08:17:02,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:17:02,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:17:02,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:17:02,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:17:02,799 INFO L87 Difference]: Start difference. First operand 12464 states and 18134 transitions. Second operand 5 states. [2020-10-29 08:17:15,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:17:15,358 INFO L93 Difference]: Finished difference Result 24930 states and 36775 transitions. [2020-10-29 08:17:15,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:17:15,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-29 08:17:15,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:17:15,432 INFO L225 Difference]: With dead ends: 24930 [2020-10-29 08:17:15,432 INFO L226 Difference]: Without dead ends: 12913 [2020-10-29 08:17:15,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:17:15,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12913 states. [2020-10-29 08:17:15,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12913 to 12901. [2020-10-29 08:17:15,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12901 states. [2020-10-29 08:17:15,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12901 states to 12901 states and 18878 transitions. [2020-10-29 08:17:15,904 INFO L78 Accepts]: Start accepts. Automaton has 12901 states and 18878 transitions. Word has length 222 [2020-10-29 08:17:15,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:17:15,905 INFO L481 AbstractCegarLoop]: Abstraction has 12901 states and 18878 transitions. [2020-10-29 08:17:15,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:17:15,905 INFO L276 IsEmpty]: Start isEmpty. Operand 12901 states and 18878 transitions. [2020-10-29 08:17:15,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-29 08:17:15,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:17:15,913 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:17:15,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:17:15,914 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:17:15,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:17:15,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1387865314, now seen corresponding path program 1 times [2020-10-29 08:17:15,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:17:15,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396718324] [2020-10-29 08:17:15,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:17:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:16,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:16,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:16,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:18,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:19,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:21,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:21,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-29 08:17:21,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:17:21,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 08:17:21,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:21,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:17:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-29 08:17:21,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 08:17:21,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:21,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:17:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:21,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:21,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:21,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:17:21,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:21,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:17:21,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:21,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:21,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:17:21,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:17:21,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:17:21,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:21,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:17:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:21,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:21,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:21,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:17:21,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:21,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 08:17:21,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:21,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:21,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:17:21,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:17:21,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:17:21,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:21,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:17:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:21,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:21,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:21,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:17:21,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:21,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 08:17:21,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:21,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:21,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:17:21,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:17:21,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 08:17:21,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:21,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-29 08:17:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:21,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:21,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:21,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 08:17:21,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:21,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-29 08:17:21,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:21,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:21,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:17:21,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:17:21,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 08:17:21,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 270 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-29 08:17:21,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396718324] [2020-10-29 08:17:21,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:17:21,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:17:21,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903850109] [2020-10-29 08:17:21,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:17:21,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:17:21,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:17:21,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:17:21,907 INFO L87 Difference]: Start difference. First operand 12901 states and 18878 transitions. Second operand 7 states. [2020-10-29 08:17:22,088 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:17:39,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:17:39,959 INFO L93 Difference]: Finished difference Result 23583 states and 34535 transitions. [2020-10-29 08:17:39,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:17:39,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 284 [2020-10-29 08:17:39,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:17:40,015 INFO L225 Difference]: With dead ends: 23583 [2020-10-29 08:17:40,016 INFO L226 Difference]: Without dead ends: 11129 [2020-10-29 08:17:40,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:17:40,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11129 states. [2020-10-29 08:17:40,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11129 to 10658. [2020-10-29 08:17:40,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10658 states. [2020-10-29 08:17:40,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10658 states to 10658 states and 13885 transitions. [2020-10-29 08:17:40,339 INFO L78 Accepts]: Start accepts. Automaton has 10658 states and 13885 transitions. Word has length 284 [2020-10-29 08:17:40,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:17:40,340 INFO L481 AbstractCegarLoop]: Abstraction has 10658 states and 13885 transitions. [2020-10-29 08:17:40,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:17:40,340 INFO L276 IsEmpty]: Start isEmpty. Operand 10658 states and 13885 transitions. [2020-10-29 08:17:40,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-29 08:17:40,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:17:40,348 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:17:40,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:17:40,348 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:17:40,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:17:40,349 INFO L82 PathProgramCache]: Analyzing trace with hash -823591072, now seen corresponding path program 1 times [2020-10-29 08:17:40,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:17:40,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089251444] [2020-10-29 08:17:40,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:17:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:40,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:40,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:40,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:41,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:44,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:44,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-29 08:17:44,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:17:44,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3938 [2020-10-29 08:17:44,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:44,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:44,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 08:17:44,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:17:44,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 300 [2020-10-29 08:17:44,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:17:44,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:17:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:44,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:44,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:44,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:17:44,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:44,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:17:44,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:44,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:44,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:17:44,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:17:44,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:17:44,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:44,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:17:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:44,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:44,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:44,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:17:44,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:44,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-29 08:17:44,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:44,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:17:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:17:44,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:17:44,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:17:45,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:17:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:45,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:45,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:45,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:17:45,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:45,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-29 08:17:45,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:45,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:45,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:17:45,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:17:45,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 08:17:45,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:45,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:17:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:45,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:45,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:45,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:17:45,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:45,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 08:17:45,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:45,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:45,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:17:45,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:17:45,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:17:45,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:45,638 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 139 proven. 118 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-29 08:17:45,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089251444] [2020-10-29 08:17:45,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:17:45,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:17:45,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707487112] [2020-10-29 08:17:45,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 08:17:45,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:17:45,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 08:17:45,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 08:17:45,649 INFO L87 Difference]: Start difference. First operand 10658 states and 13885 transitions. Second operand 9 states. [2020-10-29 08:17:45,810 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:18:10,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:18:10,380 INFO L93 Difference]: Finished difference Result 27716 states and 38933 transitions. [2020-10-29 08:18:10,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 08:18:10,383 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 293 [2020-10-29 08:18:10,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:18:10,448 INFO L225 Difference]: With dead ends: 27716 [2020-10-29 08:18:10,449 INFO L226 Difference]: Without dead ends: 17497 [2020-10-29 08:18:10,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-29 08:18:10,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17497 states. [2020-10-29 08:18:10,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17497 to 15125. [2020-10-29 08:18:10,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15125 states. [2020-10-29 08:18:10,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15125 states to 15125 states and 19900 transitions. [2020-10-29 08:18:10,881 INFO L78 Accepts]: Start accepts. Automaton has 15125 states and 19900 transitions. Word has length 293 [2020-10-29 08:18:10,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:18:10,882 INFO L481 AbstractCegarLoop]: Abstraction has 15125 states and 19900 transitions. [2020-10-29 08:18:10,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 08:18:10,883 INFO L276 IsEmpty]: Start isEmpty. Operand 15125 states and 19900 transitions. [2020-10-29 08:18:10,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-29 08:18:10,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:18:10,891 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:18:10,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:18:10,891 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:18:10,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:18:10,892 INFO L82 PathProgramCache]: Analyzing trace with hash 533577763, now seen corresponding path program 1 times [2020-10-29 08:18:10,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:18:10,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521032006] [2020-10-29 08:18:10,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:18:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:11,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:11,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:11,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:13,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:15,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:15,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-29 08:18:15,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:18:15,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 08:18:15,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:15,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:15,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:18:15,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:18:15,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:18:15,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:18:16,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:18:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:16,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:16,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:16,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:18:16,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:18:16,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:18:16,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:16,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:16,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:18:16,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:18:16,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:18:16,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:18:16,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:18:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:16,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:16,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:16,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:18:16,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:18:16,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 08:18:16,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:16,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:16,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:18:16,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:18:16,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:18:16,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:18:16,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:18:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:16,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:16,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:16,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 08:18:16,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:18:16,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-29 08:18:16,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:16,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:18:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:18:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 08:18:16,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:18:16,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-29 08:18:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:16,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:16,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:16,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:18:16,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:18:16,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 08:18:16,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:16,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:16,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:18:16,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 08:18:16,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:18:16,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:18:16,809 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 211 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-29 08:18:16,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521032006] [2020-10-29 08:18:16,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:18:16,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:18:16,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661944352] [2020-10-29 08:18:16,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:18:16,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:18:16,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:18:16,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:18:16,811 INFO L87 Difference]: Start difference. First operand 15125 states and 19900 transitions. Second operand 7 states.