/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem01_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:06:05,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:06:05,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:06:05,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:06:05,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:06:05,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:06:05,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:06:05,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:06:05,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:06:05,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:06:05,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:06:05,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:06:05,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:06:05,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:06:05,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:06:05,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:06:05,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:06:05,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:06:05,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:06:05,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:06:05,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:06:05,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:06:05,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:06:05,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:06:05,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:06:05,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:06:05,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:06:05,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:06:05,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:06:05,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:06:05,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:06:05,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:06:05,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:06:05,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:06:05,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:06:05,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:06:05,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:06:05,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:06:05,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:06:05,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:06:05,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:06:05,123 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 [2020-10-28 10:06:05,176 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:06:05,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:06:05,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:06:05,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:06:05,181 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:06:05,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:06:05,182 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:06:05,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:06:05,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:06:05,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:06:05,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:06:05,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:06:05,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:06:05,184 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:06:05,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:06:05,185 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:06:05,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:06:05,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:06:05,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:06:05,186 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:06:05,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:06:05,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:06:05,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:06:05,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:06:05,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:06:05,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:06:05,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:06:05,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:06:05,188 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:06:05,188 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:06:05,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:06:05,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:06:05,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:06:05,628 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:06:05,629 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:06:05,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label15.c [2020-10-28 10:06:05,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c1c51101/43fdd7ec41a54b70b7a8041a219f68ce/FLAGe4091b7b9 [2020-10-28 10:06:06,419 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:06:06,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label15.c [2020-10-28 10:06:06,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c1c51101/43fdd7ec41a54b70b7a8041a219f68ce/FLAGe4091b7b9 [2020-10-28 10:06:06,645 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c1c51101/43fdd7ec41a54b70b7a8041a219f68ce [2020-10-28 10:06:06,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:06:06,661 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:06:06,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:06:06,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:06:06,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:06:06,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:06:06" (1/1) ... [2020-10-28 10:06:06,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d4d9770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:06:06, skipping insertion in model container [2020-10-28 10:06:06,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:06:06" (1/1) ... [2020-10-28 10:06:06,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:06:06,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:06:07,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:06:07,150 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:06:07,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:06:07,311 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:06:07,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:06:07 WrapperNode [2020-10-28 10:06:07,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:06:07,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:06:07,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:06:07,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:06:07,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:06:07" (1/1) ... [2020-10-28 10:06:07,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:06:07" (1/1) ... [2020-10-28 10:06:07,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:06:07" (1/1) ... [2020-10-28 10:06:07,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:06:07" (1/1) ... [2020-10-28 10:06:07,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:06:07" (1/1) ... [2020-10-28 10:06:07,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:06:07" (1/1) ... [2020-10-28 10:06:07,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:06:07" (1/1) ... [2020-10-28 10:06:07,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:06:07,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:06:07,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:06:07,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:06:07,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:06:07" (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 [2020-10-28 10:06:07,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:06:07,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:06:07,599 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:06:07,599 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:06:07,599 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:06:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:06:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:06:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:06:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:06:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:06:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:06:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:06:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:06:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:06:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:06:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:06:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:06:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:06:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:06:08,767 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:06:08,768 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:06:08,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:06:08 BoogieIcfgContainer [2020-10-28 10:06:08,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:06:08,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:06:08,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:06:08,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:06:08,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:06:06" (1/3) ... [2020-10-28 10:06:08,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57996c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:06:08, skipping insertion in model container [2020-10-28 10:06:08,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:06:07" (2/3) ... [2020-10-28 10:06:08,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57996c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:06:08, skipping insertion in model container [2020-10-28 10:06:08,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:06:08" (3/3) ... [2020-10-28 10:06:08,779 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label15.c [2020-10-28 10:06:08,791 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:06:08,796 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:06:08,809 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:06:08,838 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:06:08,838 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:06:08,838 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:06:08,838 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:06:08,838 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:06:08,838 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:06:08,839 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:06:08,839 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:06:08,861 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states. [2020-10-28 10:06:08,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-28 10:06:08,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:06:08,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:06:08,873 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:06:08,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:06:08,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1917998479, now seen corresponding path program 1 times [2020-10-28 10:06:08,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:06:08,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381121847] [2020-10-28 10:06:08,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:06:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:09,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:09,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:11,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:11,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 10:06:11,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:06:11,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1961 [2020-10-28 10:06:11,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:11,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:11,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:06:11,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:06:11,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 10:06:11,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:06:11,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:06:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:11,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:11,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:11,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:06:11,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:11,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 10:06:11,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:11,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:11,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:06:11,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:06:11,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:06:11,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:06:11,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:06:11,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381121847] [2020-10-28 10:06:11,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:06:11,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 10:06:11,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533156560] [2020-10-28 10:06:11,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 10:06:11,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:06:11,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 10:06:11,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 10:06:11,468 INFO L87 Difference]: Start difference. First operand 211 states. Second operand 4 states. [2020-10-28 10:06:13,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:06:13,120 INFO L93 Difference]: Finished difference Result 562 states and 962 transitions. [2020-10-28 10:06:13,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:06:13,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-10-28 10:06:13,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:06:13,150 INFO L225 Difference]: With dead ends: 562 [2020-10-28 10:06:13,150 INFO L226 Difference]: Without dead ends: 287 [2020-10-28 10:06:13,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:06:13,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-28 10:06:13,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 281. [2020-10-28 10:06:13,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-10-28 10:06:13,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 397 transitions. [2020-10-28 10:06:13,267 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 397 transitions. Word has length 88 [2020-10-28 10:06:13,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:06:13,268 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 397 transitions. [2020-10-28 10:06:13,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 10:06:13,268 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 397 transitions. [2020-10-28 10:06:13,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 10:06:13,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:06:13,274 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:06:13,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:06:13,274 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:06:13,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:06:13,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1176915410, now seen corresponding path program 1 times [2020-10-28 10:06:13,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:06:13,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697291320] [2020-10-28 10:06:13,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:06:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:13,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:13,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:15,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:16,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:16,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 10:06:16,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:06:16,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3650 [2020-10-28 10:06:16,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:16,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:16,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:06:16,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 10:06:16,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 10:06:16,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:06:17,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:06:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:17,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:17,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:17,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:06:17,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:17,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:06:17,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:17,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:17,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:06:17,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:06:17,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:06:17,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 10:06:17,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:06:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:17,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:17,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:17,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:06:17,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:17,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:06:17,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:17,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:17,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:06:17,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:06:17,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 10:06:17,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:17,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:06:17,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697291320] [2020-10-28 10:06:17,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:06:17,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:06:17,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360166196] [2020-10-28 10:06:17,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:06:17,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:06:17,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:06:17,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:06:17,299 INFO L87 Difference]: Start difference. First operand 281 states and 397 transitions. Second operand 5 states. [2020-10-28 10:06:17,510 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-28 10:06:18,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:06:18,943 INFO L93 Difference]: Finished difference Result 836 states and 1203 transitions. [2020-10-28 10:06:18,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:06:18,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-28 10:06:18,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:06:18,955 INFO L225 Difference]: With dead ends: 836 [2020-10-28 10:06:18,955 INFO L226 Difference]: Without dead ends: 561 [2020-10-28 10:06:18,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:06:18,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2020-10-28 10:06:18,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 557. [2020-10-28 10:06:18,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2020-10-28 10:06:18,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 756 transitions. [2020-10-28 10:06:18,999 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 756 transitions. Word has length 97 [2020-10-28 10:06:19,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:06:19,000 INFO L481 AbstractCegarLoop]: Abstraction has 557 states and 756 transitions. [2020-10-28 10:06:19,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:06:19,000 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 756 transitions. [2020-10-28 10:06:19,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 10:06:19,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:06:19,007 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:06:19,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:06:19,008 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:06:19,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:06:19,008 INFO L82 PathProgramCache]: Analyzing trace with hash 893792522, now seen corresponding path program 1 times [2020-10-28 10:06:19,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:06:19,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877167550] [2020-10-28 10:06:19,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:06:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:19,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:19,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:20,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:21,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:22,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:23,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:23,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 10:06:23,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:06:23,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4340 [2020-10-28 10:06:23,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:23,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:23,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:06:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 10:06:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 10:06:23,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 10:06:23,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:06:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:23,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:23,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:23,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:06:23,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:23,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:06:23,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:23,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:06:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:06:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:06:23,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:23,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:06:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:23,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:23,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:23,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 10:06:23,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:23,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 10:06:23,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:23,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:23,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:06:23,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:06:23,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 10:06:23,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:23,612 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:06:23,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877167550] [2020-10-28 10:06:23,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:06:23,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:06:23,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855496355] [2020-10-28 10:06:23,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:06:23,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:06:23,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:06:23,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:06:23,620 INFO L87 Difference]: Start difference. First operand 557 states and 756 transitions. Second operand 5 states. [2020-10-28 10:06:25,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:06:25,325 INFO L93 Difference]: Finished difference Result 1392 states and 1946 transitions. [2020-10-28 10:06:25,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:06:25,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-28 10:06:25,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:06:25,339 INFO L225 Difference]: With dead ends: 1392 [2020-10-28 10:06:25,341 INFO L226 Difference]: Without dead ends: 841 [2020-10-28 10:06:25,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:06:25,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2020-10-28 10:06:25,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 831. [2020-10-28 10:06:25,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2020-10-28 10:06:25,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1117 transitions. [2020-10-28 10:06:25,415 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1117 transitions. Word has length 101 [2020-10-28 10:06:25,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:06:25,420 INFO L481 AbstractCegarLoop]: Abstraction has 831 states and 1117 transitions. [2020-10-28 10:06:25,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:06:25,421 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1117 transitions. [2020-10-28 10:06:25,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 10:06:25,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:06:25,436 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:06:25,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:06:25,438 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:06:25,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:06:25,439 INFO L82 PathProgramCache]: Analyzing trace with hash -142298046, now seen corresponding path program 1 times [2020-10-28 10:06:25,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:06:25,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090099231] [2020-10-28 10:06:25,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:06:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:25,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:25,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:25,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:26,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:26,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 10:06:26,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:06:26,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-10-28 10:06:26,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:26,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:26,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:06:26,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 10:06:26,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 10:06:26,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:06:26,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:06:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:26,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:26,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:26,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:06:26,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:26,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 10:06:26,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:26,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:26,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:06:26,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:06:26,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:06:26,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:06:26,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:06:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:26,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:26,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:26,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:06:26,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:26,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 10:06:26,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:26,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:26,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:06:26,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:06:26,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:06:26,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 10:06:26,466 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:06:26,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090099231] [2020-10-28 10:06:26,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:06:26,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:06:26,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484258625] [2020-10-28 10:06:26,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:06:26,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:06:26,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:06:26,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:06:26,470 INFO L87 Difference]: Start difference. First operand 831 states and 1117 transitions. Second operand 5 states. [2020-10-28 10:06:28,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:06:28,031 INFO L93 Difference]: Finished difference Result 2488 states and 3436 transitions. [2020-10-28 10:06:28,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:06:28,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-28 10:06:28,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:06:28,048 INFO L225 Difference]: With dead ends: 2488 [2020-10-28 10:06:28,049 INFO L226 Difference]: Without dead ends: 1663 [2020-10-28 10:06:28,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:06:28,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2020-10-28 10:06:28,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1655. [2020-10-28 10:06:28,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1655 states. [2020-10-28 10:06:28,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2152 transitions. [2020-10-28 10:06:28,182 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2152 transitions. Word has length 105 [2020-10-28 10:06:28,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:06:28,182 INFO L481 AbstractCegarLoop]: Abstraction has 1655 states and 2152 transitions. [2020-10-28 10:06:28,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:06:28,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2152 transitions. [2020-10-28 10:06:28,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-28 10:06:28,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:06:28,190 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:06:28,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:06:28,190 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:06:28,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:06:28,191 INFO L82 PathProgramCache]: Analyzing trace with hash 170291678, now seen corresponding path program 1 times [2020-10-28 10:06:28,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:06:28,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837991388] [2020-10-28 10:06:28,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:06:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:28,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:28,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:29,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:30,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:31,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:31,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 10:06:31,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:06:31,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3133 [2020-10-28 10:06:31,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:31,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:31,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:06:31,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 10:06:31,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 10:06:31,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:06:31,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:06:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:31,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:31,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:31,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:06:31,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:31,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:06:31,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:31,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:31,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:06:31,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:06:31,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:06:31,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:06:31,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:06:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:31,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:31,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:31,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:06:31,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:31,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:06:31,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:31,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:31,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:06:31,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:06:31,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:06:31,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 10:06:31,601 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:06:31,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837991388] [2020-10-28 10:06:31,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:06:31,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:06:31,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818724473] [2020-10-28 10:06:31,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:06:31,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:06:31,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:06:31,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:06:31,604 INFO L87 Difference]: Start difference. First operand 1655 states and 2152 transitions. Second operand 5 states. [2020-10-28 10:06:33,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:06:33,166 INFO L93 Difference]: Finished difference Result 3997 states and 5368 transitions. [2020-10-28 10:06:33,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:06:33,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-28 10:06:33,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:06:33,181 INFO L225 Difference]: With dead ends: 3997 [2020-10-28 10:06:33,182 INFO L226 Difference]: Without dead ends: 2348 [2020-10-28 10:06:33,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:06:33,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2020-10-28 10:06:33,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2070. [2020-10-28 10:06:33,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2070 states. [2020-10-28 10:06:33,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 2709 transitions. [2020-10-28 10:06:33,298 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 2709 transitions. Word has length 107 [2020-10-28 10:06:33,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:06:33,298 INFO L481 AbstractCegarLoop]: Abstraction has 2070 states and 2709 transitions. [2020-10-28 10:06:33,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:06:33,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 2709 transitions. [2020-10-28 10:06:33,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 10:06:33,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:06:33,305 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:06:33,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:06:33,306 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:06:33,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:06:33,306 INFO L82 PathProgramCache]: Analyzing trace with hash -212627269, now seen corresponding path program 1 times [2020-10-28 10:06:33,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:06:33,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626855239] [2020-10-28 10:06:33,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:06:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:33,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:33,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:33,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 10:06:33,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:33,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-28 10:06:33,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:33,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:33,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:06:33,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:06:33,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 10:06:33,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:33,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:06:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:33,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:33,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:33,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:06:33,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:33,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:06:33,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:33,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:33,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:06:33,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:06:33,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:06:33,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:33,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:06:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:33,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:33,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:33,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:06:33,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:33,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 10:06:33,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:33,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:33,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:06:33,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:06:33,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 10:06:33,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:33,973 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:06:33,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626855239] [2020-10-28 10:06:33,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:06:33,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:06:33,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352381094] [2020-10-28 10:06:33,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:06:33,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:06:33,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:06:33,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:06:33,978 INFO L87 Difference]: Start difference. First operand 2070 states and 2709 transitions. Second operand 7 states. [2020-10-28 10:06:34,121 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-28 10:06:35,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:06:35,870 INFO L93 Difference]: Finished difference Result 4250 states and 6033 transitions. [2020-10-28 10:06:35,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:06:35,871 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-28 10:06:35,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:06:35,886 INFO L225 Difference]: With dead ends: 4250 [2020-10-28 10:06:35,887 INFO L226 Difference]: Without dead ends: 2186 [2020-10-28 10:06:35,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 10:06:35,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2186 states. [2020-10-28 10:06:35,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2186 to 2094. [2020-10-28 10:06:35,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-10-28 10:06:36,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 2715 transitions. [2020-10-28 10:06:36,002 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 2715 transitions. Word has length 122 [2020-10-28 10:06:36,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:06:36,002 INFO L481 AbstractCegarLoop]: Abstraction has 2094 states and 2715 transitions. [2020-10-28 10:06:36,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:06:36,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 2715 transitions. [2020-10-28 10:06:36,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 10:06:36,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:06:36,008 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:06:36,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 10:06:36,008 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:06:36,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:06:36,009 INFO L82 PathProgramCache]: Analyzing trace with hash 677796759, now seen corresponding path program 1 times [2020-10-28 10:06:36,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:06:36,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395148978] [2020-10-28 10:06:36,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:06:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:36,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:36,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:37,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:38,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:39,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:39,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 10:06:39,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:06:39,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3109 [2020-10-28 10:06:39,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:39,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:39,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:06:39,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 10:06:39,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 10:06:39,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:39,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:06:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:39,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:39,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:39,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:06:39,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:39,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:06:39,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:39,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:06:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:06:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:06:39,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:39,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:06:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:39,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:39,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:39,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 10:06:39,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:39,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 10:06:39,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:39,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:39,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:06:39,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:06:39,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 10:06:39,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:06:39,459 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:06:39,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395148978] [2020-10-28 10:06:39,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:06:39,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:06:39,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452331872] [2020-10-28 10:06:39,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:06:39,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:06:39,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:06:39,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:06:39,463 INFO L87 Difference]: Start difference. First operand 2094 states and 2715 transitions. Second operand 5 states. [2020-10-28 10:06:40,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:06:40,841 INFO L93 Difference]: Finished difference Result 5278 states and 6933 transitions. [2020-10-28 10:06:40,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:06:40,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-28 10:06:40,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:06:40,865 INFO L225 Difference]: With dead ends: 5278 [2020-10-28 10:06:40,865 INFO L226 Difference]: Without dead ends: 3190 [2020-10-28 10:06:40,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:06:40,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2020-10-28 10:06:40,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 2920. [2020-10-28 10:06:40,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2920 states. [2020-10-28 10:06:40,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 3704 transitions. [2020-10-28 10:06:40,976 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 3704 transitions. Word has length 124 [2020-10-28 10:06:40,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:06:40,976 INFO L481 AbstractCegarLoop]: Abstraction has 2920 states and 3704 transitions. [2020-10-28 10:06:40,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:06:40,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 3704 transitions. [2020-10-28 10:06:40,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 10:06:40,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:06:40,984 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:06:40,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 10:06:40,984 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:06:40,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:06:40,985 INFO L82 PathProgramCache]: Analyzing trace with hash -964318631, now seen corresponding path program 1 times [2020-10-28 10:06:40,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:06:40,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628631836] [2020-10-28 10:06:40,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:06:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:41,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:41,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:41,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:41,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 10:06:41,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:06:41,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 644 [2020-10-28 10:06:41,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:41,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:41,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:06:41,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 10:06:41,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 10:06:41,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:41,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:06:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:41,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:41,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:41,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:06:41,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:41,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:06:41,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:41,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:41,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:06:41,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:06:41,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:06:41,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:41,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:06:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:41,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:41,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:41,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 10:06:41,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:41,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:06:41,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:41,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:41,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:06:41,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:06:41,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 10:06:41,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:41,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 10:06:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:41,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:41,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:41,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:06:41,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:41,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 10:06:41,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:41,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:41,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:06:41,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:06:41,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 10:06:41,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:41,992 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:06:41,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628631836] [2020-10-28 10:06:41,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:06:41,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:06:41,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142433888] [2020-10-28 10:06:41,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:06:41,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:06:41,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:06:41,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:06:41,995 INFO L87 Difference]: Start difference. First operand 2920 states and 3704 transitions. Second operand 7 states. [2020-10-28 10:06:43,531 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-28 10:06:43,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:06:43,809 INFO L93 Difference]: Finished difference Result 6255 states and 7932 transitions. [2020-10-28 10:06:43,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:06:43,809 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-28 10:06:43,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:06:43,826 INFO L225 Difference]: With dead ends: 6255 [2020-10-28 10:06:43,826 INFO L226 Difference]: Without dead ends: 3341 [2020-10-28 10:06:43,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:06:43,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3341 states. [2020-10-28 10:06:43,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3341 to 3339. [2020-10-28 10:06:43,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3339 states. [2020-10-28 10:06:43,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3339 states to 3339 states and 4122 transitions. [2020-10-28 10:06:43,945 INFO L78 Accepts]: Start accepts. Automaton has 3339 states and 4122 transitions. Word has length 130 [2020-10-28 10:06:43,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:06:43,945 INFO L481 AbstractCegarLoop]: Abstraction has 3339 states and 4122 transitions. [2020-10-28 10:06:43,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:06:43,945 INFO L276 IsEmpty]: Start isEmpty. Operand 3339 states and 4122 transitions. [2020-10-28 10:06:43,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-28 10:06:43,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:06:43,954 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:06:43,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 10:06:43,954 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:06:43,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:06:43,955 INFO L82 PathProgramCache]: Analyzing trace with hash -2018979208, now seen corresponding path program 1 times [2020-10-28 10:06:43,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:06:43,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142098] [2020-10-28 10:06:43,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:06:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:43,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:44,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:44,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:44,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-28 10:06:44,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:06:44,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 706 [2020-10-28 10:06:44,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:44,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:06:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 10:06:44,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 10:06:44,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:44,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:06:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:44,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:44,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:44,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:06:44,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:44,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:06:44,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:44,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:44,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:06:44,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:06:44,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:06:44,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:44,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:06:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:44,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:44,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:44,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:06:44,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:44,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:06:44,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:44,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:44,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:06:44,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:06:44,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 10:06:44,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:44,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 10:06:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:44,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:44,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:44,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:06:44,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:44,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 10:06:44,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:44,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:44,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:06:44,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:06:44,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 10:06:44,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:45,150 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:06:45,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142098] [2020-10-28 10:06:45,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:06:45,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:06:45,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985029956] [2020-10-28 10:06:45,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:06:45,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:06:45,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:06:45,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:06:45,153 INFO L87 Difference]: Start difference. First operand 3339 states and 4122 transitions. Second operand 7 states. [2020-10-28 10:06:45,462 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:06:47,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:06:47,234 INFO L93 Difference]: Finished difference Result 6692 states and 8328 transitions. [2020-10-28 10:06:47,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 10:06:47,235 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-10-28 10:06:47,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:06:47,249 INFO L225 Difference]: With dead ends: 6692 [2020-10-28 10:06:47,249 INFO L226 Difference]: Without dead ends: 3073 [2020-10-28 10:06:47,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:06:47,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3073 states. [2020-10-28 10:06:47,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3073 to 3055. [2020-10-28 10:06:47,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3055 states. [2020-10-28 10:06:47,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3055 states to 3055 states and 3475 transitions. [2020-10-28 10:06:47,366 INFO L78 Accepts]: Start accepts. Automaton has 3055 states and 3475 transitions. Word has length 133 [2020-10-28 10:06:47,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:06:47,366 INFO L481 AbstractCegarLoop]: Abstraction has 3055 states and 3475 transitions. [2020-10-28 10:06:47,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:06:47,367 INFO L276 IsEmpty]: Start isEmpty. Operand 3055 states and 3475 transitions. [2020-10-28 10:06:47,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-28 10:06:47,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:06:47,374 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:06:47,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 10:06:47,374 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:06:47,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:06:47,375 INFO L82 PathProgramCache]: Analyzing trace with hash 511060022, now seen corresponding path program 1 times [2020-10-28 10:06:47,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:06:47,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565139780] [2020-10-28 10:06:47,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:06:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:47,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:47,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:48,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:48,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-28 10:06:48,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:06:48,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 768 [2020-10-28 10:06:48,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:48,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:48,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:06:48,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 10:06:48,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 10:06:48,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:48,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:06:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:48,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:48,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:48,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:06:48,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:48,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:06:48,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:48,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:48,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:06:48,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:06:48,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:06:48,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:48,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:06:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:48,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:48,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:48,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 10:06:48,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:48,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 10:06:48,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:48,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:48,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:06:48,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:06:48,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 10:06:48,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:48,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 10:06:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:48,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:48,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:48,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:48,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 10:06:48,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:06:48,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 10:06:48,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:48,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:06:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:06:48,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:06:48,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:48,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 10:06:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:48,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:48,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:48,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:06:48,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:48,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 10:06:48,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:48,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:48,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:06:48,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:06:48,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 10:06:48,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:48,630 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 56 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 10:06:48,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565139780] [2020-10-28 10:06:48,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:06:48,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 10:06:48,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471185841] [2020-10-28 10:06:48,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 10:06:48,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:06:48,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 10:06:48,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 10:06:48,632 INFO L87 Difference]: Start difference. First operand 3055 states and 3475 transitions. Second operand 10 states. [2020-10-28 10:06:51,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:06:51,066 INFO L93 Difference]: Finished difference Result 6966 states and 8091 transitions. [2020-10-28 10:06:51,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 10:06:51,067 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 143 [2020-10-28 10:06:51,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:06:51,086 INFO L225 Difference]: With dead ends: 6966 [2020-10-28 10:06:51,086 INFO L226 Difference]: Without dead ends: 4052 [2020-10-28 10:06:51,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-10-28 10:06:51,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2020-10-28 10:06:51,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 3466. [2020-10-28 10:06:51,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3466 states. [2020-10-28 10:06:51,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 3898 transitions. [2020-10-28 10:06:51,233 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 3898 transitions. Word has length 143 [2020-10-28 10:06:51,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:06:51,233 INFO L481 AbstractCegarLoop]: Abstraction has 3466 states and 3898 transitions. [2020-10-28 10:06:51,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 10:06:51,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 3898 transitions. [2020-10-28 10:06:51,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-28 10:06:51,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:06:51,242 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, 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] [2020-10-28 10:06:51,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 10:06:51,243 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:06:51,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:06:51,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1845904796, now seen corresponding path program 1 times [2020-10-28 10:06:51,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:06:51,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969073530] [2020-10-28 10:06:51,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:06:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:51,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:51,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:52,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:52,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-28 10:06:52,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:06:52,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 844 [2020-10-28 10:06:52,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:52,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:52,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:06:52,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 10:06:52,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 10:06:52,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:52,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:06:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:52,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:52,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:52,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:06:52,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:52,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:06:52,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:52,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:52,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:06:52,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:06:52,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:06:52,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:52,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:06:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:52,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:52,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:52,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 10:06:52,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:52,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 10:06:52,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:52,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:52,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:06:52,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:06:52,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 10:06:52,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:52,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 10:06:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:52,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:52,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:52,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:06:52,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:52,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 10:06:52,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:52,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:52,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:06:52,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:06:52,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 10:06:52,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:52,544 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:06:52,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969073530] [2020-10-28 10:06:52,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:06:52,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:06:52,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556488277] [2020-10-28 10:06:52,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:06:52,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:06:52,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:06:52,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:06:52,547 INFO L87 Difference]: Start difference. First operand 3466 states and 3898 transitions. Second operand 8 states. [2020-10-28 10:06:53,114 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-28 10:06:54,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:06:54,881 INFO L93 Difference]: Finished difference Result 6668 states and 7503 transitions. [2020-10-28 10:06:54,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 10:06:54,882 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 163 [2020-10-28 10:06:54,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:06:54,895 INFO L225 Difference]: With dead ends: 6668 [2020-10-28 10:06:54,895 INFO L226 Difference]: Without dead ends: 3343 [2020-10-28 10:06:54,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-28 10:06:54,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2020-10-28 10:06:54,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3335. [2020-10-28 10:06:54,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3335 states. [2020-10-28 10:06:54,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3335 states to 3335 states and 3718 transitions. [2020-10-28 10:06:54,985 INFO L78 Accepts]: Start accepts. Automaton has 3335 states and 3718 transitions. Word has length 163 [2020-10-28 10:06:54,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:06:54,986 INFO L481 AbstractCegarLoop]: Abstraction has 3335 states and 3718 transitions. [2020-10-28 10:06:54,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:06:54,986 INFO L276 IsEmpty]: Start isEmpty. Operand 3335 states and 3718 transitions. [2020-10-28 10:06:54,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-28 10:06:54,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:06:54,995 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-28 10:06:54,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 10:06:54,996 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:06:54,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:06:54,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1702052253, now seen corresponding path program 1 times [2020-10-28 10:06:54,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:06:54,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129350882] [2020-10-28 10:06:54,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:06:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:55,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:55,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:55,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-28 10:06:55,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:55,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-10-28 10:06:55,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:55,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:55,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:06:55,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-28 10:06:55,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 10:06:55,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:55,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:06:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:55,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:55,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:55,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:06:55,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:55,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 10:06:55,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:55,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:55,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:06:55,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:06:55,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:06:55,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:55,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:06:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:55,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:55,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:55,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 10:06:55,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:55,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 10:06:55,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:55,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:55,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:06:55,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:06:55,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:06:55,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:55,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 10:06:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:55,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:55,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:55,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 10:06:55,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:55,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 10:06:55,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:55,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:06:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:06:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:06:55,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:55,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 10:06:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:55,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:55,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:55,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 10:06:55,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:55,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 10:06:55,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:55,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:55,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:06:55,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:06:55,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 10:06:55,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:55,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 10:06:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:06:55,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:06:55,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:06:55,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:06:55,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:06:55,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 10:06:55,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:06:55,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:06:55,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:06:55,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:06:55,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 10:06:55,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:06:55,931 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-28 10:06:55,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129350882] [2020-10-28 10:06:55,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:06:55,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:06:55,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338264883] [2020-10-28 10:06:55,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:06:55,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:06:55,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:06:55,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:06:55,934 INFO L87 Difference]: Start difference. First operand 3335 states and 3718 transitions. Second operand 7 states. [2020-10-28 10:06:56,424 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-28 10:06:56,926 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:06:57,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:06:57,801 INFO L93 Difference]: Finished difference Result 6601 states and 7494 transitions. [2020-10-28 10:06:57,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:06:57,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 238 [2020-10-28 10:06:57,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:06:57,827 INFO L225 Difference]: With dead ends: 6601 [2020-10-28 10:06:57,827 INFO L226 Difference]: Without dead ends: 2706 [2020-10-28 10:06:57,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:06:57,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2020-10-28 10:06:57,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 2648. [2020-10-28 10:06:57,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2648 states. [2020-10-28 10:06:57,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2648 states to 2648 states and 2915 transitions. [2020-10-28 10:06:57,958 INFO L78 Accepts]: Start accepts. Automaton has 2648 states and 2915 transitions. Word has length 238 [2020-10-28 10:06:57,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:06:57,958 INFO L481 AbstractCegarLoop]: Abstraction has 2648 states and 2915 transitions. [2020-10-28 10:06:57,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:06:57,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2648 states and 2915 transitions. [2020-10-28 10:06:57,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-28 10:06:57,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:06:57,967 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:06:57,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 10:06:57,967 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:06:57,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:06:57,968 INFO L82 PathProgramCache]: Analyzing trace with hash 524919260, now seen corresponding path program 1 times [2020-10-28 10:06:57,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:06:57,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074907152] [2020-10-28 10:06:57,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:06:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 10:06:58,023 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 10:06:58,024 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 10:06:58,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 10:06:58,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 10:06:58 BoogieIcfgContainer [2020-10-28 10:06:58,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 10:06:58,102 INFO L168 Benchmark]: Toolchain (without parser) took 51447.81 ms. Allocated memory was 153.1 MB in the beginning and 891.3 MB in the end (delta: 738.2 MB). Free memory was 126.4 MB in the beginning and 823.5 MB in the end (delta: -697.1 MB). Peak memory consumption was 42.6 MB. Max. memory is 8.0 GB. [2020-10-28 10:06:58,103 INFO L168 Benchmark]: CDTParser took 0.64 ms. Allocated memory is still 153.1 MB. Free memory is still 127.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 10:06:58,105 INFO L168 Benchmark]: CACSL2BoogieTranslator took 648.22 ms. Allocated memory is still 153.1 MB. Free memory was 125.8 MB in the beginning and 99.1 MB in the end (delta: 26.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2020-10-28 10:06:58,108 INFO L168 Benchmark]: Boogie Preprocessor took 200.24 ms. Allocated memory is still 153.1 MB. Free memory was 99.1 MB in the beginning and 130.8 MB in the end (delta: -31.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 8.0 GB. [2020-10-28 10:06:58,108 INFO L168 Benchmark]: RCFGBuilder took 1256.24 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 130.8 MB in the beginning and 141.4 MB in the end (delta: -10.7 MB). Peak memory consumption was 84.9 MB. Max. memory is 8.0 GB. [2020-10-28 10:06:58,109 INFO L168 Benchmark]: TraceAbstraction took 49324.58 ms. Allocated memory was 184.5 MB in the beginning and 891.3 MB in the end (delta: 706.7 MB). Free memory was 140.9 MB in the beginning and 823.5 MB in the end (delta: -682.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 8.0 GB. [2020-10-28 10:06:58,112 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64 ms. Allocated memory is still 153.1 MB. Free memory is still 127.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 648.22 ms. Allocated memory is still 153.1 MB. Free memory was 125.8 MB in the beginning and 99.1 MB in the end (delta: 26.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 200.24 ms. Allocated memory is still 153.1 MB. Free memory was 99.1 MB in the beginning and 130.8 MB in the end (delta: -31.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1256.24 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 130.8 MB in the beginning and 141.4 MB in the end (delta: -10.7 MB). Peak memory consumption was 84.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 49324.58 ms. Allocated memory was 184.5 MB in the beginning and 891.3 MB in the end (delta: 706.7 MB). Free memory was 140.9 MB in the beginning and 823.5 MB in the end (delta: -682.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] int a= 1; [L10] int d= 4; [L11] int e= 5; [L12] int f= 6; [L13] int c= 3; [L14] int b= 2; [L17] int u = 21; [L18] int v = 22; [L19] int w = 23; [L20] int x = 24; [L21] int y = 25; [L22] int z = 26; [L24] int a17 = 1; [L25] int a7 = 0; [L26] int a20 = 1; [L27] int a8 = 15; [L28] int a12 = 8; [L29] int a16 = 5; [L30] int a21 = 1; [L582] int output = -1; [L585] COND TRUE 1 [L588] int input; [L589] input = __VERIFIER_nondet_int() [L590] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L593] CALL, EXPR calculate_output(input) [L33] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L37] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L45] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L51] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L56] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L64] COND FALSE !((((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6))) [L67] COND FALSE !((((a12==8)&&(((a21==1)&&((((input==5)&&!(a7==1))&&(a8==15))&&(a16==5)))&&!(a20==1)))&&!(a17==1))) [L74] COND FALSE !(((a12==8)&&((input==1)&&(((a21==1)&&(((a8==15)&&((!(a17==1)&&!(a7==1))&&!(a20==1)))&&(a16==6)))||(!(a21==1)&&((a16==4)&&((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1))))))))) [L82] COND FALSE !(((((!(a17==1)&&(!(a7==1)&&((a21==1)&&((a8==15)&&(input==4)))))&&!(a20==1))&&(a12==8))&&(a16==4))) [L86] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&(((a20==1)&&((a17==1)&&(a7==1)))&&(a8==13)))&&!(a21==1)))&&(input==2))&&(a12==8))) [L94] COND FALSE !(((a8==13)&&(!(a21==1)&&((((input==3)&&((((a20==1)&&!(a17==1))&&(a16==6))||((!(a20==1)&&(a17==1))&&(a16==4))))&&(a12==8))&&(a7==1))))) [L99] COND FALSE !(((((a21==1)&&((a12==8)&&((input==1)&&(((!(a20==1)&&(a17==1))&&(a16==4))||(((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&(!(a17==1)&&(a20==1))))))))&&!(a7==1))&&(a8==15))) [L104] COND FALSE !((((a16==5)&&(((a7==1)&&((!(a21==1)&&((a12==8)&&(input==3)))&&(a8==13)))&&(a17==1)))&&(a20==1))) [L110] COND FALSE !(((a17==1)&&(((a8==15)&&(((a12==8)&&((!(a7==1)&&(input==5))&&(a21==1)))&&!(a20==1)))&&(a16==5)))) [L116] COND FALSE !((!(a7==1)&&(((((a21==1)&&(((a8==15)&&(input==5))&&!(a17==1)))&&(a12==8))&&(a20==1))&&(a16==4)))) [L121] COND FALSE !(((!(a21==1)&&(((a12==8)&&((((a16==6)&&((a20==1)&&!(a17==1)))||((!(a20==1)&&(a17==1))&&(a16==4)))&&(input==1)))&&(a8==13)))&&(a7==1))) [L126] COND FALSE !(((a17==1)&&(!(a7==1)&&(((a21==1)&&(((a12==8)&&((input==5)&&((a16==5)||(a16==6))))&&(a20==1)))&&(a8==15))))) [L131] COND FALSE !((((a12==8)&&(!(a21==1)&&((a7==1)&&((a8==13)&&((input==6)&&((((a16==6)&&(a17==1))||((a16==4)&&!(a17==1)))||((a16==5)&&!(a17==1))))))))&&(a20==1))) [L138] COND FALSE !((((a16==5)&&((((a8==15)&&((!(a7==1)&&(input==2))&&(a21==1)))&&(a12==8))&&!(a20==1)))&&!(a17==1))) [L142] COND FALSE !((!(a20==1)&&((a21==1)&&((a16==4)&&((a8==15)&&(((a12==8)&&((input==2)&&!(a7==1)))&&!(a17==1))))))) [L146] COND FALSE !((((a21==1)&&(!(a7==1)&&((!(a20==1)&&(!(a17==1)&&((a12==8)&&(input==6))))&&(a16==4))))&&(a8==15))) [L150] COND FALSE !(((a17==1)&&((((((a12==8)&&((input==4)&&(a8==13)))&&(a20==1))&&!(a21==1))&&(a16==5))&&(a7==1)))) [L154] COND FALSE !(((((a8==13)&&((a12==8)&&((((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5)))&&(input==1))&&!(a21==1))))&&(a20==1))&&(a7==1))) [L162] COND FALSE !(((a8==13)&&(!(a21==1)&&((((((!(a17==1)&&(a20==1))&&(a16==6))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==5))&&(a7==1))&&(a12==8))))) [L167] COND FALSE !(((!(a21==1)&&((((((a16==6)&&((a20==1)&&!(a17==1)))||(((a17==1)&&!(a20==1))&&(a16==4)))&&(input==4))&&(a7==1))&&(a12==8)))&&(a8==13))) [L175] COND FALSE !((((a21==1)&&(!(a7==1)&&((((((a16==5)&&((a20==1)&&!(a17==1)))||((!(a17==1)&&(a20==1))&&(a16==6)))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==4))&&(a12==8))))&&(a8==15))) [L180] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&((((a7==1)&&(a17==1))&&(a20==1))&&(a8==13)))&&!(a21==1)))&&(input==4))&&(a12==8))) [L188] COND FALSE !((!(a17==1)&&(((a12==8)&&(!(a20==1)&&(((a8==15)&&((a21==1)&&(input==4)))&&!(a7==1))))&&(a16==5)))) [L191] COND FALSE !((((!(a7==1)&&(((input==2)&&((((a16==5)&&((a20==1)&&!(a17==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a8==15)))&&(a12==8))&&(a21==1))) [L196] COND FALSE !((!(a20==1)&&(((((((input==6)&&(a16==5))&&(a21==1))&&!(a17==1))&&(a12==8))&&!(a7==1))&&(a8==15)))) [L199] COND FALSE !(((a12==8)&&(((((((a21==1)&&(input==5))&&(a8==15))&&(a17==1))&&!(a7==1))&&!(a20==1))&&(a16==6)))) [L205] COND FALSE !(((((a8==15)&&(!(a7==1)&&((((!(a20==1)&&(a17==1))&&(a16==4))||(((!(a17==1)&&(a20==1))&&(a16==5))||((a16==6)&&((a20==1)&&!(a17==1)))))&&(input==6))))&&(a12==8))&&(a21==1))) [L210] COND FALSE !(((a8==15)&&((a16==4)&&(!(a20==1)&&((((a21==1)&&(!(a17==1)&&(input==5)))&&!(a7==1))&&(a12==8)))))) [L216] COND FALSE !(((a17==1)&&((a12==8)&&((a8==15)&&(((!(a7==1)&&(((a16==5)||(a16==6))&&(input==2)))&&(a21==1))&&(a20==1)))))) [L220] COND FALSE !((!(a7==1)&&(((a8==15)&&((!(a17==1)&&((a12==8)&&((input==3)&&(a21==1))))&&(a16==4)))&&(a20==1)))) [L225] COND FALSE !(((a16==5)&&((!(a21==1)&&(((a8==13)&&(((input==2)&&(a20==1))&&(a12==8)))&&(a7==1)))&&(a17==1)))) [L233] COND FALSE !(((a20==1)&&(((a12==8)&&((a7==1)&&((a8==13)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==3)))))&&!(a21==1)))) [L240] COND FALSE !(((a12==8)&&((a7==1)&&(!(a21==1)&&((a8==13)&&((input==6)&&(((a16==6)&&((a20==1)&&!(a17==1)))||((a16==4)&&((a17==1)&&!(a20==1)))))))))) [L247] COND FALSE !(((!(a7==1)&&(!(a17==1)&&((((a16==4)&&((a8==15)&&(input==1)))&&(a12==8))&&(a21==1))))&&(a20==1))) [L252] COND FALSE !(((a17==1)&&(((a21==1)&&(!(a20==1)&&((a12==8)&&((a8==15)&&(!(a7==1)&&(input==1))))))&&(a16==6)))) [L258] COND FALSE !(((a20==1)&&((a12==8)&&((((a17==1)&&((((a16==5)||(a16==6))&&(input==4))&&(a8==15)))&&(a21==1))&&!(a7==1))))) [L263] COND FALSE !(((((a8==13)&&((((!(a21==1)&&(input==6))&&(a20==1))&&(a12==8))&&(a17==1)))&&(a7==1))&&(a16==5))) [L267] COND FALSE !(((a16==5)&&(((((a12==8)&&(!(a7==1)&&((input==2)&&!(a20==1))))&&(a21==1))&&(a17==1))&&(a8==15)))) [L270] COND FALSE !((((a12==8)&&(((!(a17==1)&&((a21==1)&&((input==4)&&!(a7==1))))&&(a8==15))&&(a20==1)))&&(a16==4))) [L275] COND FALSE !(((a7==1)&&((a8==13)&&((a12==8)&&(!(a21==1)&&((input==2)&&((((a20==1)&&!(a17==1))&&(a16==6))||(((a17==1)&&!(a20==1))&&(a16==4))))))))) [L280] COND FALSE !((((((((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15))&&(a16==6))&&(a21==1))||((((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1)))&&(a16==4))&&!(a21==1)))&&(input==6))&&(a12==8))) [L288] COND FALSE !(((!(a7==1)&&(!(a17==1)&&(((((input==3)&&(a21==1))&&(a16==4))&&(a8==15))&&(a12==8))))&&!(a20==1))) [L294] COND FALSE !((((((a12==8)&&(((((a17==1)&&!(a20==1))&&(a16==4))||((((a20==1)&&!(a17==1))&&(a16==5))||((!(a17==1)&&(a20==1))&&(a16==6))))&&(input==3)))&&(a8==15))&&(a21==1))&&!(a7==1))) [L301] COND FALSE !((((!(a7==1)&&(((input==5)&&((((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a12==8)))&&(a21==1))&&(a8==15))) [L308] COND FALSE !(((!(a7==1)&&(((a21==1)&&(((a17==1)&&((a12==8)&&(input==2)))&&!(a20==1)))&&(a16==6)))&&(a8==15))) [L314] COND FALSE !(((!(a17==1)&&((a21==1)&&((!(a20==1)&&((a12==8)&&((input==3)&&!(a7==1))))&&(a8==15))))&&(a16==5))) [L318] COND FALSE !((((a16==5)&&(!(a20==1)&&(((((input==6)&&(a21==1))&&(a17==1))&&!(a7==1))&&(a12==8))))&&(a8==15))) [L320] COND FALSE !((!(a7==1)&&((a17==1)&&(((a16==6)&&(!(a20==1)&&(((input==6)&&(a12==8))&&(a21==1))))&&(a8==15))))) [L326] COND FALSE !(((((a21==1)&&((a8==15)&&((a12==8)&&(!(a7==1)&&(!(a17==1)&&(input==2))))))&&(a16==4))&&(a20==1))) [L331] COND FALSE !(((a8==15)&&(((a16==4)&&((a12==8)&&((!(a20==1)&&(!(a7==1)&&(input==1)))&&!(a17==1))))&&(a21==1)))) [L335] COND TRUE ((a21==1)&&(((a12==8)&&((((a17==1)&&((input==3)&&((a16==5)||(a16==6))))&&!(a7==1))&&(a20==1)))&&(a8==15))) [L336] a17 = 0 [L337] a16 = 4 [L338] return 21; [L593] RET, EXPR calculate_output(input) [L593] output = calculate_output(input) [L585] COND TRUE 1 [L588] int input; [L589] input = __VERIFIER_nondet_int() [L590] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L593] CALL, EXPR calculate_output(input) [L33] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L37] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L45] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L51] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L56] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L64] COND FALSE !((((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6))) [L67] COND FALSE !((((a12==8)&&(((a21==1)&&((((input==5)&&!(a7==1))&&(a8==15))&&(a16==5)))&&!(a20==1)))&&!(a17==1))) [L74] COND FALSE !(((a12==8)&&((input==1)&&(((a21==1)&&(((a8==15)&&((!(a17==1)&&!(a7==1))&&!(a20==1)))&&(a16==6)))||(!(a21==1)&&((a16==4)&&((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1))))))))) [L82] COND FALSE !(((((!(a17==1)&&(!(a7==1)&&((a21==1)&&((a8==15)&&(input==4)))))&&!(a20==1))&&(a12==8))&&(a16==4))) [L86] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&(((a20==1)&&((a17==1)&&(a7==1)))&&(a8==13)))&&!(a21==1)))&&(input==2))&&(a12==8))) [L94] COND FALSE !(((a8==13)&&(!(a21==1)&&((((input==3)&&((((a20==1)&&!(a17==1))&&(a16==6))||((!(a20==1)&&(a17==1))&&(a16==4))))&&(a12==8))&&(a7==1))))) [L99] COND FALSE !(((((a21==1)&&((a12==8)&&((input==1)&&(((!(a20==1)&&(a17==1))&&(a16==4))||(((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&(!(a17==1)&&(a20==1))))))))&&!(a7==1))&&(a8==15))) [L104] COND FALSE !((((a16==5)&&(((a7==1)&&((!(a21==1)&&((a12==8)&&(input==3)))&&(a8==13)))&&(a17==1)))&&(a20==1))) [L110] COND FALSE !(((a17==1)&&(((a8==15)&&(((a12==8)&&((!(a7==1)&&(input==5))&&(a21==1)))&&!(a20==1)))&&(a16==5)))) [L116] COND FALSE !((!(a7==1)&&(((((a21==1)&&(((a8==15)&&(input==5))&&!(a17==1)))&&(a12==8))&&(a20==1))&&(a16==4)))) [L121] COND FALSE !(((!(a21==1)&&(((a12==8)&&((((a16==6)&&((a20==1)&&!(a17==1)))||((!(a20==1)&&(a17==1))&&(a16==4)))&&(input==1)))&&(a8==13)))&&(a7==1))) [L126] COND FALSE !(((a17==1)&&(!(a7==1)&&(((a21==1)&&(((a12==8)&&((input==5)&&((a16==5)||(a16==6))))&&(a20==1)))&&(a8==15))))) [L131] COND FALSE !((((a12==8)&&(!(a21==1)&&((a7==1)&&((a8==13)&&((input==6)&&((((a16==6)&&(a17==1))||((a16==4)&&!(a17==1)))||((a16==5)&&!(a17==1))))))))&&(a20==1))) [L138] COND FALSE !((((a16==5)&&((((a8==15)&&((!(a7==1)&&(input==2))&&(a21==1)))&&(a12==8))&&!(a20==1)))&&!(a17==1))) [L142] COND FALSE !((!(a20==1)&&((a21==1)&&((a16==4)&&((a8==15)&&(((a12==8)&&((input==2)&&!(a7==1)))&&!(a17==1))))))) [L146] COND FALSE !((((a21==1)&&(!(a7==1)&&((!(a20==1)&&(!(a17==1)&&((a12==8)&&(input==6))))&&(a16==4))))&&(a8==15))) [L150] COND FALSE !(((a17==1)&&((((((a12==8)&&((input==4)&&(a8==13)))&&(a20==1))&&!(a21==1))&&(a16==5))&&(a7==1)))) [L154] COND FALSE !(((((a8==13)&&((a12==8)&&((((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5)))&&(input==1))&&!(a21==1))))&&(a20==1))&&(a7==1))) [L162] COND FALSE !(((a8==13)&&(!(a21==1)&&((((((!(a17==1)&&(a20==1))&&(a16==6))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==5))&&(a7==1))&&(a12==8))))) [L167] COND FALSE !(((!(a21==1)&&((((((a16==6)&&((a20==1)&&!(a17==1)))||(((a17==1)&&!(a20==1))&&(a16==4)))&&(input==4))&&(a7==1))&&(a12==8)))&&(a8==13))) [L175] COND FALSE !((((a21==1)&&(!(a7==1)&&((((((a16==5)&&((a20==1)&&!(a17==1)))||((!(a17==1)&&(a20==1))&&(a16==6)))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==4))&&(a12==8))))&&(a8==15))) [L180] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&((((a7==1)&&(a17==1))&&(a20==1))&&(a8==13)))&&!(a21==1)))&&(input==4))&&(a12==8))) [L188] COND FALSE !((!(a17==1)&&(((a12==8)&&(!(a20==1)&&(((a8==15)&&((a21==1)&&(input==4)))&&!(a7==1))))&&(a16==5)))) [L191] COND FALSE !((((!(a7==1)&&(((input==2)&&((((a16==5)&&((a20==1)&&!(a17==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a8==15)))&&(a12==8))&&(a21==1))) [L196] COND FALSE !((!(a20==1)&&(((((((input==6)&&(a16==5))&&(a21==1))&&!(a17==1))&&(a12==8))&&!(a7==1))&&(a8==15)))) [L199] COND FALSE !(((a12==8)&&(((((((a21==1)&&(input==5))&&(a8==15))&&(a17==1))&&!(a7==1))&&!(a20==1))&&(a16==6)))) [L205] COND FALSE !(((((a8==15)&&(!(a7==1)&&((((!(a20==1)&&(a17==1))&&(a16==4))||(((!(a17==1)&&(a20==1))&&(a16==5))||((a16==6)&&((a20==1)&&!(a17==1)))))&&(input==6))))&&(a12==8))&&(a21==1))) [L210] COND FALSE !(((a8==15)&&((a16==4)&&(!(a20==1)&&((((a21==1)&&(!(a17==1)&&(input==5)))&&!(a7==1))&&(a12==8)))))) [L216] COND FALSE !(((a17==1)&&((a12==8)&&((a8==15)&&(((!(a7==1)&&(((a16==5)||(a16==6))&&(input==2)))&&(a21==1))&&(a20==1)))))) [L220] COND FALSE !((!(a7==1)&&(((a8==15)&&((!(a17==1)&&((a12==8)&&((input==3)&&(a21==1))))&&(a16==4)))&&(a20==1)))) [L225] COND FALSE !(((a16==5)&&((!(a21==1)&&(((a8==13)&&(((input==2)&&(a20==1))&&(a12==8)))&&(a7==1)))&&(a17==1)))) [L233] COND FALSE !(((a20==1)&&(((a12==8)&&((a7==1)&&((a8==13)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==3)))))&&!(a21==1)))) [L240] COND FALSE !(((a12==8)&&((a7==1)&&(!(a21==1)&&((a8==13)&&((input==6)&&(((a16==6)&&((a20==1)&&!(a17==1)))||((a16==4)&&((a17==1)&&!(a20==1)))))))))) [L247] COND FALSE !(((!(a7==1)&&(!(a17==1)&&((((a16==4)&&((a8==15)&&(input==1)))&&(a12==8))&&(a21==1))))&&(a20==1))) [L252] COND FALSE !(((a17==1)&&(((a21==1)&&(!(a20==1)&&((a12==8)&&((a8==15)&&(!(a7==1)&&(input==1))))))&&(a16==6)))) [L258] COND FALSE !(((a20==1)&&((a12==8)&&((((a17==1)&&((((a16==5)||(a16==6))&&(input==4))&&(a8==15)))&&(a21==1))&&!(a7==1))))) [L263] COND FALSE !(((((a8==13)&&((((!(a21==1)&&(input==6))&&(a20==1))&&(a12==8))&&(a17==1)))&&(a7==1))&&(a16==5))) [L267] COND FALSE !(((a16==5)&&(((((a12==8)&&(!(a7==1)&&((input==2)&&!(a20==1))))&&(a21==1))&&(a17==1))&&(a8==15)))) [L270] COND TRUE (((a12==8)&&(((!(a17==1)&&((a21==1)&&((input==4)&&!(a7==1))))&&(a8==15))&&(a20==1)))&&(a16==4)) [L271] a20 = 0 [L272] a17 = 1 [L273] a16 = 6 [L274] return 21; [L593] RET, EXPR calculate_output(input) [L593] output = calculate_output(input) [L585] COND TRUE 1 [L588] int input; [L589] input = __VERIFIER_nondet_int() [L590] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L593] CALL, EXPR calculate_output(input) [L33] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L37] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L45] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L51] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L56] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L64] COND TRUE (((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6)) [L65] a17 = 0 [L66] return 26; [L593] RET, EXPR calculate_output(input) [L593] output = calculate_output(input) [L585] COND TRUE 1 [L588] int input; [L589] input = __VERIFIER_nondet_int() [L590] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L593] CALL, EXPR calculate_output(input) [L33] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L37] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L45] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L51] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L56] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L64] COND FALSE !((((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6))) [L67] COND FALSE !((((a12==8)&&(((a21==1)&&((((input==5)&&!(a7==1))&&(a8==15))&&(a16==5)))&&!(a20==1)))&&!(a17==1))) [L74] COND FALSE !(((a12==8)&&((input==1)&&(((a21==1)&&(((a8==15)&&((!(a17==1)&&!(a7==1))&&!(a20==1)))&&(a16==6)))||(!(a21==1)&&((a16==4)&&((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1))))))))) [L82] COND FALSE !(((((!(a17==1)&&(!(a7==1)&&((a21==1)&&((a8==15)&&(input==4)))))&&!(a20==1))&&(a12==8))&&(a16==4))) [L86] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&(((a20==1)&&((a17==1)&&(a7==1)))&&(a8==13)))&&!(a21==1)))&&(input==2))&&(a12==8))) [L94] COND FALSE !(((a8==13)&&(!(a21==1)&&((((input==3)&&((((a20==1)&&!(a17==1))&&(a16==6))||((!(a20==1)&&(a17==1))&&(a16==4))))&&(a12==8))&&(a7==1))))) [L99] COND FALSE !(((((a21==1)&&((a12==8)&&((input==1)&&(((!(a20==1)&&(a17==1))&&(a16==4))||(((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&(!(a17==1)&&(a20==1))))))))&&!(a7==1))&&(a8==15))) [L104] COND FALSE !((((a16==5)&&(((a7==1)&&((!(a21==1)&&((a12==8)&&(input==3)))&&(a8==13)))&&(a17==1)))&&(a20==1))) [L110] COND FALSE !(((a17==1)&&(((a8==15)&&(((a12==8)&&((!(a7==1)&&(input==5))&&(a21==1)))&&!(a20==1)))&&(a16==5)))) [L116] COND FALSE !((!(a7==1)&&(((((a21==1)&&(((a8==15)&&(input==5))&&!(a17==1)))&&(a12==8))&&(a20==1))&&(a16==4)))) [L121] COND FALSE !(((!(a21==1)&&(((a12==8)&&((((a16==6)&&((a20==1)&&!(a17==1)))||((!(a20==1)&&(a17==1))&&(a16==4)))&&(input==1)))&&(a8==13)))&&(a7==1))) [L126] COND FALSE !(((a17==1)&&(!(a7==1)&&(((a21==1)&&(((a12==8)&&((input==5)&&((a16==5)||(a16==6))))&&(a20==1)))&&(a8==15))))) [L131] COND FALSE !((((a12==8)&&(!(a21==1)&&((a7==1)&&((a8==13)&&((input==6)&&((((a16==6)&&(a17==1))||((a16==4)&&!(a17==1)))||((a16==5)&&!(a17==1))))))))&&(a20==1))) [L138] COND FALSE !((((a16==5)&&((((a8==15)&&((!(a7==1)&&(input==2))&&(a21==1)))&&(a12==8))&&!(a20==1)))&&!(a17==1))) [L142] COND FALSE !((!(a20==1)&&((a21==1)&&((a16==4)&&((a8==15)&&(((a12==8)&&((input==2)&&!(a7==1)))&&!(a17==1))))))) [L146] COND FALSE !((((a21==1)&&(!(a7==1)&&((!(a20==1)&&(!(a17==1)&&((a12==8)&&(input==6))))&&(a16==4))))&&(a8==15))) [L150] COND FALSE !(((a17==1)&&((((((a12==8)&&((input==4)&&(a8==13)))&&(a20==1))&&!(a21==1))&&(a16==5))&&(a7==1)))) [L154] COND FALSE !(((((a8==13)&&((a12==8)&&((((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5)))&&(input==1))&&!(a21==1))))&&(a20==1))&&(a7==1))) [L162] COND FALSE !(((a8==13)&&(!(a21==1)&&((((((!(a17==1)&&(a20==1))&&(a16==6))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==5))&&(a7==1))&&(a12==8))))) [L167] COND FALSE !(((!(a21==1)&&((((((a16==6)&&((a20==1)&&!(a17==1)))||(((a17==1)&&!(a20==1))&&(a16==4)))&&(input==4))&&(a7==1))&&(a12==8)))&&(a8==13))) [L175] COND FALSE !((((a21==1)&&(!(a7==1)&&((((((a16==5)&&((a20==1)&&!(a17==1)))||((!(a17==1)&&(a20==1))&&(a16==6)))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==4))&&(a12==8))))&&(a8==15))) [L180] COND TRUE ((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&((((a7==1)&&(a17==1))&&(a20==1))&&(a8==13)))&&!(a21==1)))&&(input==4))&&(a12==8)) [L181] a17 = 0 [L182] a16 = 5 [L183] a21 = 1 [L184] a8 = 14 [L185] a7 = 1 [L186] a20 = 1 [L187] return -1; [L593] RET, EXPR calculate_output(input) [L593] output = calculate_output(input) [L585] COND TRUE 1 [L588] int input; [L589] input = __VERIFIER_nondet_int() [L590] COND FALSE !((input != 1) && (input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L593] CALL calculate_output(input) [L33] COND FALSE !((((a8==15)&&(((((a21==1)&&(((a16==5)||(a16==6))&&(input==1)))&&(a20==1))&&(a17==1))&&!(a7==1)))&&(a12==8))) [L37] COND FALSE !((((((((input==5)&&((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5))))&&(a20==1))&&(a12==8))&&(a7==1))&&!(a21==1))&&(a8==13))) [L45] COND FALSE !(((!(a7==1)&&((((a16==6)&&((a21==1)&&((a17==1)&&(input==3))))&&!(a20==1))&&(a8==15)))&&(a12==8))) [L51] COND FALSE !(((a17==1)&&((!(a7==1)&&(((a21==1)&&((((a16==5)||(a16==6))&&(input==6))&&(a20==1)))&&(a8==15)))&&(a12==8)))) [L56] COND FALSE !((((input==3)&&((((a16==6)&&((!(a20==1)&&(!(a7==1)&&!(a17==1)))&&(a8==15)))&&(a21==1))||((((a8==13)&&((a20==1)&&((a17==1)&&(a7==1))))&&(a16==4))&&!(a21==1))))&&(a12==8))) [L64] COND FALSE !((((a17==1)&&(((a21==1)&&((!(a7==1)&&((input==4)&&(a8==15)))&&!(a20==1)))&&(a12==8)))&&(a16==6))) [L67] COND FALSE !((((a12==8)&&(((a21==1)&&((((input==5)&&!(a7==1))&&(a8==15))&&(a16==5)))&&!(a20==1)))&&!(a17==1))) [L74] COND FALSE !(((a12==8)&&((input==1)&&(((a21==1)&&(((a8==15)&&((!(a17==1)&&!(a7==1))&&!(a20==1)))&&(a16==6)))||(!(a21==1)&&((a16==4)&&((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1))))))))) [L82] COND FALSE !(((((!(a17==1)&&(!(a7==1)&&((a21==1)&&((a8==15)&&(input==4)))))&&!(a20==1))&&(a12==8))&&(a16==4))) [L86] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&(((a20==1)&&((a17==1)&&(a7==1)))&&(a8==13)))&&!(a21==1)))&&(input==2))&&(a12==8))) [L94] COND FALSE !(((a8==13)&&(!(a21==1)&&((((input==3)&&((((a20==1)&&!(a17==1))&&(a16==6))||((!(a20==1)&&(a17==1))&&(a16==4))))&&(a12==8))&&(a7==1))))) [L99] COND FALSE !(((((a21==1)&&((a12==8)&&((input==1)&&(((!(a20==1)&&(a17==1))&&(a16==4))||(((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&(!(a17==1)&&(a20==1))))))))&&!(a7==1))&&(a8==15))) [L104] COND FALSE !((((a16==5)&&(((a7==1)&&((!(a21==1)&&((a12==8)&&(input==3)))&&(a8==13)))&&(a17==1)))&&(a20==1))) [L110] COND FALSE !(((a17==1)&&(((a8==15)&&(((a12==8)&&((!(a7==1)&&(input==5))&&(a21==1)))&&!(a20==1)))&&(a16==5)))) [L116] COND FALSE !((!(a7==1)&&(((((a21==1)&&(((a8==15)&&(input==5))&&!(a17==1)))&&(a12==8))&&(a20==1))&&(a16==4)))) [L121] COND FALSE !(((!(a21==1)&&(((a12==8)&&((((a16==6)&&((a20==1)&&!(a17==1)))||((!(a20==1)&&(a17==1))&&(a16==4)))&&(input==1)))&&(a8==13)))&&(a7==1))) [L126] COND FALSE !(((a17==1)&&(!(a7==1)&&(((a21==1)&&(((a12==8)&&((input==5)&&((a16==5)||(a16==6))))&&(a20==1)))&&(a8==15))))) [L131] COND FALSE !((((a12==8)&&(!(a21==1)&&((a7==1)&&((a8==13)&&((input==6)&&((((a16==6)&&(a17==1))||((a16==4)&&!(a17==1)))||((a16==5)&&!(a17==1))))))))&&(a20==1))) [L138] COND FALSE !((((a16==5)&&((((a8==15)&&((!(a7==1)&&(input==2))&&(a21==1)))&&(a12==8))&&!(a20==1)))&&!(a17==1))) [L142] COND FALSE !((!(a20==1)&&((a21==1)&&((a16==4)&&((a8==15)&&(((a12==8)&&((input==2)&&!(a7==1)))&&!(a17==1))))))) [L146] COND FALSE !((((a21==1)&&(!(a7==1)&&((!(a20==1)&&(!(a17==1)&&((a12==8)&&(input==6))))&&(a16==4))))&&(a8==15))) [L150] COND FALSE !(((a17==1)&&((((((a12==8)&&((input==4)&&(a8==13)))&&(a20==1))&&!(a21==1))&&(a16==5))&&(a7==1)))) [L154] COND FALSE !(((((a8==13)&&((a12==8)&&((((((a16==6)&&(a17==1))||(!(a17==1)&&(a16==4)))||(!(a17==1)&&(a16==5)))&&(input==1))&&!(a21==1))))&&(a20==1))&&(a7==1))) [L162] COND FALSE !(((a8==13)&&(!(a21==1)&&((((((!(a17==1)&&(a20==1))&&(a16==6))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==5))&&(a7==1))&&(a12==8))))) [L167] COND FALSE !(((!(a21==1)&&((((((a16==6)&&((a20==1)&&!(a17==1)))||(((a17==1)&&!(a20==1))&&(a16==4)))&&(input==4))&&(a7==1))&&(a12==8)))&&(a8==13))) [L175] COND FALSE !((((a21==1)&&(!(a7==1)&&((((((a16==5)&&((a20==1)&&!(a17==1)))||((!(a17==1)&&(a20==1))&&(a16==6)))||((a16==4)&&((a17==1)&&!(a20==1))))&&(input==4))&&(a12==8))))&&(a8==15))) [L180] COND FALSE !(((((((a16==6)&&((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15)))&&(a21==1))||(((a16==4)&&((((a7==1)&&(a17==1))&&(a20==1))&&(a8==13)))&&!(a21==1)))&&(input==4))&&(a12==8))) [L188] COND FALSE !((!(a17==1)&&(((a12==8)&&(!(a20==1)&&(((a8==15)&&((a21==1)&&(input==4)))&&!(a7==1))))&&(a16==5)))) [L191] COND FALSE !((((!(a7==1)&&(((input==2)&&((((a16==5)&&((a20==1)&&!(a17==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a8==15)))&&(a12==8))&&(a21==1))) [L196] COND FALSE !((!(a20==1)&&(((((((input==6)&&(a16==5))&&(a21==1))&&!(a17==1))&&(a12==8))&&!(a7==1))&&(a8==15)))) [L199] COND FALSE !(((a12==8)&&(((((((a21==1)&&(input==5))&&(a8==15))&&(a17==1))&&!(a7==1))&&!(a20==1))&&(a16==6)))) [L205] COND FALSE !(((((a8==15)&&(!(a7==1)&&((((!(a20==1)&&(a17==1))&&(a16==4))||(((!(a17==1)&&(a20==1))&&(a16==5))||((a16==6)&&((a20==1)&&!(a17==1)))))&&(input==6))))&&(a12==8))&&(a21==1))) [L210] COND FALSE !(((a8==15)&&((a16==4)&&(!(a20==1)&&((((a21==1)&&(!(a17==1)&&(input==5)))&&!(a7==1))&&(a12==8)))))) [L216] COND FALSE !(((a17==1)&&((a12==8)&&((a8==15)&&(((!(a7==1)&&(((a16==5)||(a16==6))&&(input==2)))&&(a21==1))&&(a20==1)))))) [L220] COND FALSE !((!(a7==1)&&(((a8==15)&&((!(a17==1)&&((a12==8)&&((input==3)&&(a21==1))))&&(a16==4)))&&(a20==1)))) [L225] COND FALSE !(((a16==5)&&((!(a21==1)&&(((a8==13)&&(((input==2)&&(a20==1))&&(a12==8)))&&(a7==1)))&&(a17==1)))) [L233] COND FALSE !(((a20==1)&&(((a12==8)&&((a7==1)&&((a8==13)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==3)))))&&!(a21==1)))) [L240] COND FALSE !(((a12==8)&&((a7==1)&&(!(a21==1)&&((a8==13)&&((input==6)&&(((a16==6)&&((a20==1)&&!(a17==1)))||((a16==4)&&((a17==1)&&!(a20==1)))))))))) [L247] COND FALSE !(((!(a7==1)&&(!(a17==1)&&((((a16==4)&&((a8==15)&&(input==1)))&&(a12==8))&&(a21==1))))&&(a20==1))) [L252] COND FALSE !(((a17==1)&&(((a21==1)&&(!(a20==1)&&((a12==8)&&((a8==15)&&(!(a7==1)&&(input==1))))))&&(a16==6)))) [L258] COND FALSE !(((a20==1)&&((a12==8)&&((((a17==1)&&((((a16==5)||(a16==6))&&(input==4))&&(a8==15)))&&(a21==1))&&!(a7==1))))) [L263] COND FALSE !(((((a8==13)&&((((!(a21==1)&&(input==6))&&(a20==1))&&(a12==8))&&(a17==1)))&&(a7==1))&&(a16==5))) [L267] COND FALSE !(((a16==5)&&(((((a12==8)&&(!(a7==1)&&((input==2)&&!(a20==1))))&&(a21==1))&&(a17==1))&&(a8==15)))) [L270] COND FALSE !((((a12==8)&&(((!(a17==1)&&((a21==1)&&((input==4)&&!(a7==1))))&&(a8==15))&&(a20==1)))&&(a16==4))) [L275] COND FALSE !(((a7==1)&&((a8==13)&&((a12==8)&&(!(a21==1)&&((input==2)&&((((a20==1)&&!(a17==1))&&(a16==6))||(((a17==1)&&!(a20==1))&&(a16==4))))))))) [L280] COND FALSE !((((((((!(a20==1)&&(!(a17==1)&&!(a7==1)))&&(a8==15))&&(a16==6))&&(a21==1))||((((a8==13)&&(((a17==1)&&(a7==1))&&(a20==1)))&&(a16==4))&&!(a21==1)))&&(input==6))&&(a12==8))) [L288] COND FALSE !(((!(a7==1)&&(!(a17==1)&&(((((input==3)&&(a21==1))&&(a16==4))&&(a8==15))&&(a12==8))))&&!(a20==1))) [L294] COND FALSE !((((((a12==8)&&(((((a17==1)&&!(a20==1))&&(a16==4))||((((a20==1)&&!(a17==1))&&(a16==5))||((!(a17==1)&&(a20==1))&&(a16==6))))&&(input==3)))&&(a8==15))&&(a21==1))&&!(a7==1))) [L301] COND FALSE !((((!(a7==1)&&(((input==5)&&((((a16==5)&&(!(a17==1)&&(a20==1)))||((a16==6)&&((a20==1)&&!(a17==1))))||((a16==4)&&(!(a20==1)&&(a17==1)))))&&(a12==8)))&&(a21==1))&&(a8==15))) [L308] COND FALSE !(((!(a7==1)&&(((a21==1)&&(((a17==1)&&((a12==8)&&(input==2)))&&!(a20==1)))&&(a16==6)))&&(a8==15))) [L314] COND FALSE !(((!(a17==1)&&((a21==1)&&((!(a20==1)&&((a12==8)&&((input==3)&&!(a7==1))))&&(a8==15))))&&(a16==5))) [L318] COND FALSE !((((a16==5)&&(!(a20==1)&&(((((input==6)&&(a21==1))&&(a17==1))&&!(a7==1))&&(a12==8))))&&(a8==15))) [L320] COND FALSE !((!(a7==1)&&((a17==1)&&(((a16==6)&&(!(a20==1)&&(((input==6)&&(a12==8))&&(a21==1))))&&(a8==15))))) [L326] COND FALSE !(((((a21==1)&&((a8==15)&&((a12==8)&&(!(a7==1)&&(!(a17==1)&&(input==2))))))&&(a16==4))&&(a20==1))) [L331] COND FALSE !(((a8==15)&&(((a16==4)&&((a12==8)&&((!(a20==1)&&(!(a7==1)&&(input==1)))&&!(a17==1))))&&(a21==1)))) [L335] COND FALSE !(((a21==1)&&(((a12==8)&&((((a17==1)&&((input==3)&&((a16==5)||(a16==6))))&&!(a7==1))&&(a20==1)))&&(a8==15)))) [L339] COND FALSE !((!(a21==1)&&((a20==1)&&(((a12==8)&&((a8==13)&&((((a16==5)&&!(a17==1))||(((a17==1)&&(a16==6))||(!(a17==1)&&(a16==4))))&&(input==2))))&&(a7==1))))) [L347] COND FALSE !(((a7==1)&&((a12==8)&&((((a20==1)&&(((!(a17==1)&&(a16==5))||(((a17==1)&&(a16==6))||((a16==4)&&!(a17==1))))&&(input==4)))&&(a8==13))&&!(a21==1))))) [L355] COND FALSE !(((a21==1)&&((((!(a7==1)&&((a8==15)&&(!(a20==1)&&(input==4))))&&(a17==1))&&(a16==5))&&(a12==8)))) [L357] COND FALSE !((((!(a7==1)&&((!(a20==1)&&((a21==1)&&((input==3)&&(a17==1))))&&(a8==15)))&&(a12==8))&&(a16==5))) [L363] COND FALSE !(((((!(a17==1)&&(!(a20==1)&&((a8==15)&&((input==1)&&(a16==5)))))&&(a12==8))&&(a21==1))&&!(a7==1))) [L365] COND FALSE !(((((a21==1)&&((a8==15)&&(((a16==5)&&((a12==8)&&(input==1)))&&(a17==1))))&&!(a7==1))&&!(a20==1))) [L367] COND FALSE !(((!(a21==1)&&((a20==1)&&((((a8==13)&&((a7==1)&&(input==5)))&&(a17==1))&&(a12==8))))&&(a16==5))) [L374] COND FALSE !((((!(a7==1)&&((a21==1)&&((((input==6)&&(a20==1))&&(a8==15))&&!(a17==1))))&&(a12==8))&&(a16==4))) [L379] COND FALSE !(((((a20==1)&&(((!(a21==1)&&((a7==1)&&(input==1)))&&(a8==13))&&(a17==1)))&&(a12==8))&&(a16==5))) [L384] COND FALSE !(((a12==8)&&((input==5)&&((((((!(a17==1)&&!(a7==1))&&!(a20==1))&&(a8==15))&&(a16==6))&&(a21==1))||(!(a21==1)&&((a16==4)&&(((a20==1)&&((a7==1)&&(a17==1)))&&(a8==13)))))))) [L393] COND FALSE !(((((((!(a17==1)&&(a7==1))&&!(a20==1))&&(a8==14))&&(a12==8))&&(a16==4))&&(a21==1))) [L396] COND FALSE !((((((((a17==1)&&!(a7==1))&&(a20==1))&&(a8==14))&&(a12==8))&&(a16==4))&&(a21==1))) [L399] COND FALSE !(((((((!(a17==1)&&(a7==1))&&!(a20==1))&&(a8==15))&&(a12==8))&&(a16==4))&&(a21==1))) [L402] COND FALSE !((((((((a17==1)&&!(a7==1))&&(a20==1))&&(a8==13))&&(a12==8))&&(a16==6))&&(a21==1))) [L405] COND FALSE !(((((((!(a17==1)&&!(a7==1))&&!(a20==1))&&(a8==14))&&(a12==8))&&(a16==4))&&(a21==1))) [L408] COND FALSE !(((((((!(a17==1)&&(a7==1))&&!(a20==1))&&(a8==15))&&(a12==8))&&(a16==5))&&(a21==1))) [L411] COND FALSE !(((((((!(a17==1)&&!(a7==1))&&!(a20==1))&&(a8==14))&&(a12==8))&&(a16==5))&&(a21==1))) [L414] COND FALSE !(((((((!(a17==1)&&!(a7==1))&&(a20==1))&&(a8==14))&&(a12==8))&&(a16==4))&&(a21==1))) [L417] COND FALSE !((((((((a17==1)&&!(a7==1))&&(a20==1))&&(a8==13))&&(a12==8))&&(a16==4))&&(a21==1))) [L420] COND TRUE ((((((!(a17==1)&&(a7==1))&&(a20==1))&&(a8==14))&&(a12==8))&&(a16==5))&&(a21==1)) [L421] CALL reach_error() [L4] __assert_fail("0", "Problem01_label15.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 211 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 49.1s, OverallIterations: 13, TraceHistogramMax: 5, AutomataDifference: 22.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 354 SDtfs, 4502 SDslu, 412 SDs, 0 SdLazy, 9703 SolverSat, 1218 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 180 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3466occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 1340 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 24.3s InterpolantComputationTime, 1800 NumberOfCodeBlocks, 1800 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1539 ConstructedInterpolants, 0 QuantifiedInterpolants, 990578 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 633/662 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...