/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 15:32:14,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 15:32:14,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 15:32:14,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 15:32:14,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 15:32:14,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 15:32:14,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 15:32:14,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 15:32:14,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 15:32:14,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 15:32:14,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 15:32:14,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 15:32:14,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 15:32:14,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 15:32:14,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 15:32:14,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 15:32:14,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 15:32:14,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 15:32:14,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 15:32:14,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 15:32:14,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 15:32:14,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 15:32:14,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 15:32:14,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 15:32:15,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 15:32:15,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 15:32:15,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 15:32:15,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 15:32:15,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 15:32:15,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 15:32:15,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 15:32:15,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 15:32:15,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 15:32:15,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 15:32:15,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 15:32:15,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 15:32:15,024 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 15:32:15,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 15:32:15,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 15:32:15,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 15:32:15,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 15:32:15,034 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 15:32:15,091 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 15:32:15,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 15:32:15,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 15:32:15,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 15:32:15,093 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 15:32:15,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 15:32:15,094 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 15:32:15,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 15:32:15,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 15:32:15,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 15:32:15,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 15:32:15,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 15:32:15,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 15:32:15,095 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 15:32:15,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 15:32:15,096 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 15:32:15,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 15:32:15,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 15:32:15,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 15:32:15,096 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 15:32:15,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 15:32:15,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:32:15,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 15:32:15,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 15:32:15,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 15:32:15,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 15:32:15,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 15:32:15,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 15:32:15,098 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 15:32:15,098 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 15:32:15,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 15:32:15,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 15:32:15,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 15:32:15,511 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 15:32:15,513 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 15:32:15,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label21.c [2020-10-27 15:32:15,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2312c8621/c15d4dd5b0304889a1ba15b084cfad7c/FLAG89250eb8e [2020-10-27 15:32:16,337 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 15:32:16,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label21.c [2020-10-27 15:32:16,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2312c8621/c15d4dd5b0304889a1ba15b084cfad7c/FLAG89250eb8e [2020-10-27 15:32:16,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2312c8621/c15d4dd5b0304889a1ba15b084cfad7c [2020-10-27 15:32:16,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 15:32:16,625 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 15:32:16,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 15:32:16,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 15:32:16,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 15:32:16,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:32:16" (1/1) ... [2020-10-27 15:32:16,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fcb6a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:32:16, skipping insertion in model container [2020-10-27 15:32:16,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:32:16" (1/1) ... [2020-10-27 15:32:16,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 15:32:16,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 15:32:17,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:32:17,268 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 15:32:17,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:32:17,457 INFO L208 MainTranslator]: Completed translation [2020-10-27 15:32:17,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:32:17 WrapperNode [2020-10-27 15:32:17,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 15:32:17,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 15:32:17,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 15:32:17,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 15:32:17,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:32:17" (1/1) ... [2020-10-27 15:32:17,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:32:17" (1/1) ... [2020-10-27 15:32:17,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:32:17" (1/1) ... [2020-10-27 15:32:17,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:32:17" (1/1) ... [2020-10-27 15:32:17,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:32:17" (1/1) ... [2020-10-27 15:32:17,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:32:17" (1/1) ... [2020-10-27 15:32:17,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:32:17" (1/1) ... [2020-10-27 15:32:17,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 15:32:17,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 15:32:17,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 15:32:17,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 15:32:17,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:32:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:32:17,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 15:32:17,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 15:32:17,670 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 15:32:17,671 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 15:32:17,671 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 15:32:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 15:32:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 15:32:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 15:32:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 15:32:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 15:32:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 15:32:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 15:32:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 15:32:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 15:32:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 15:32:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 15:32:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 15:32:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 15:32:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 15:32:19,034 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 15:32:19,035 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 15:32:19,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:32:19 BoogieIcfgContainer [2020-10-27 15:32:19,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 15:32:19,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 15:32:19,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 15:32:19,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 15:32:19,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:32:16" (1/3) ... [2020-10-27 15:32:19,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d1a5c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:32:19, skipping insertion in model container [2020-10-27 15:32:19,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:32:17" (2/3) ... [2020-10-27 15:32:19,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d1a5c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:32:19, skipping insertion in model container [2020-10-27 15:32:19,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:32:19" (3/3) ... [2020-10-27 15:32:19,047 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label21.c [2020-10-27 15:32:19,058 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 15:32:19,064 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 15:32:19,078 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 15:32:19,110 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 15:32:19,110 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 15:32:19,110 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 15:32:19,110 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 15:32:19,111 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 15:32:19,111 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 15:32:19,111 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 15:32:19,111 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 15:32:19,136 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states. [2020-10-27 15:32:19,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 15:32:19,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:32:19,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:32:19,149 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:32:19,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:32:19,156 INFO L82 PathProgramCache]: Analyzing trace with hash -663699015, now seen corresponding path program 1 times [2020-10-27 15:32:19,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:32:19,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652875443] [2020-10-27 15:32:19,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:32:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:19,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:19,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:21,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:21,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 15:32:21,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:32:21,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2083 [2020-10-27 15:32:21,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:21,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:32:21,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:32:21,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 15:32:21,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 15:32:21,767 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 15:32:21,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:32:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:21,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:21,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:21,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:32:21,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:32:21,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 15:32:21,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:32:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:32:21,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:32:21,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:32:21,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:32:21,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652875443] [2020-10-27 15:32:21,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:32:21,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 15:32:21,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712492731] [2020-10-27 15:32:21,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:32:21,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:32:21,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:32:21,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:32:21,898 INFO L87 Difference]: Start difference. First operand 211 states. Second operand 4 states. [2020-10-27 15:32:22,068 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-27 15:32:23,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:32:23,790 INFO L93 Difference]: Finished difference Result 562 states and 962 transitions. [2020-10-27 15:32:23,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:32:23,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-10-27 15:32:23,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:32:23,808 INFO L225 Difference]: With dead ends: 562 [2020-10-27 15:32:23,808 INFO L226 Difference]: Without dead ends: 287 [2020-10-27 15:32:23,816 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 [2020-10-27 15:32:23,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-27 15:32:23,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 281. [2020-10-27 15:32:23,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-10-27 15:32:23,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 397 transitions. [2020-10-27 15:32:23,906 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 397 transitions. Word has length 90 [2020-10-27 15:32:23,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:32:23,907 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 397 transitions. [2020-10-27 15:32:23,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:32:23,908 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 397 transitions. [2020-10-27 15:32:23,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 15:32:23,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:32:23,914 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:32:23,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 15:32:23,914 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:32:23,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:32:23,915 INFO L82 PathProgramCache]: Analyzing trace with hash -2146115789, now seen corresponding path program 1 times [2020-10-27 15:32:23,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:32:23,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78280702] [2020-10-27 15:32:23,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:32:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:23,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:24,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:24,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:25,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:25,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 15:32:25,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:32:25,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1112 [2020-10-27 15:32:25,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:25,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:32:25,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 15:32:25,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 15:32:25,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:25,287 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 15:32:25,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:32:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:25,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:25,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:25,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:32:25,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:32:25,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:32:25,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:25,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:32:25,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:32:25,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:32:25,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:32:25,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:32:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:25,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:25,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:25,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:32:25,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:32:25,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 15:32:25,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:25,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:32:25,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:32:25,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 15:32:25,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:32:25,420 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:32:25,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78280702] [2020-10-27 15:32:25,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:32:25,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:32:25,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215711933] [2020-10-27 15:32:25,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:32:25,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:32:25,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:32:25,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:32:25,429 INFO L87 Difference]: Start difference. First operand 281 states and 397 transitions. Second operand 5 states. [2020-10-27 15:32:25,711 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-27 15:32:27,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:32:27,160 INFO L93 Difference]: Finished difference Result 699 states and 1009 transitions. [2020-10-27 15:32:27,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:32:27,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-27 15:32:27,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:32:27,167 INFO L225 Difference]: With dead ends: 699 [2020-10-27 15:32:27,167 INFO L226 Difference]: Without dead ends: 424 [2020-10-27 15:32:27,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:32:27,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-10-27 15:32:27,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 420. [2020-10-27 15:32:27,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-10-27 15:32:27,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 565 transitions. [2020-10-27 15:32:27,223 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 565 transitions. Word has length 100 [2020-10-27 15:32:27,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:32:27,224 INFO L481 AbstractCegarLoop]: Abstraction has 420 states and 565 transitions. [2020-10-27 15:32:27,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:32:27,225 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 565 transitions. [2020-10-27 15:32:27,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-27 15:32:27,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:32:27,229 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, 1, 1] [2020-10-27 15:32:27,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 15:32:27,230 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:32:27,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:32:27,230 INFO L82 PathProgramCache]: Analyzing trace with hash 682400586, now seen corresponding path program 1 times [2020-10-27 15:32:27,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:32:27,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115628698] [2020-10-27 15:32:27,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:32:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:27,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:27,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:27,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:28,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:28,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 15:32:28,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:32:28,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 991 [2020-10-27 15:32:28,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:28,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:32:28,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 15:32:28,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 15:32:28,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:28,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:32:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:28,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:28,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:28,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:32:28,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:32:28,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:32:28,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:28,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:32:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:32:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:32:28,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:28,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:32:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:28,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:28,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:28,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 15:32:28,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:32:28,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 15:32:28,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:28,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:32:28,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:32:28,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 15:32:28,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:28,665 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:32:28,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115628698] [2020-10-27 15:32:28,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:32:28,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:32:28,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311591458] [2020-10-27 15:32:28,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:32:28,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:32:28,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:32:28,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:32:28,672 INFO L87 Difference]: Start difference. First operand 420 states and 565 transitions. Second operand 5 states. [2020-10-27 15:32:29,007 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-27 15:32:30,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:32:30,215 INFO L93 Difference]: Finished difference Result 919 states and 1287 transitions. [2020-10-27 15:32:30,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:32:30,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-27 15:32:30,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:32:30,222 INFO L225 Difference]: With dead ends: 919 [2020-10-27 15:32:30,223 INFO L226 Difference]: Without dead ends: 424 [2020-10-27 15:32:30,225 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 [2020-10-27 15:32:30,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-10-27 15:32:30,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 420. [2020-10-27 15:32:30,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-10-27 15:32:30,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 562 transitions. [2020-10-27 15:32:30,283 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 562 transitions. Word has length 107 [2020-10-27 15:32:30,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:32:30,283 INFO L481 AbstractCegarLoop]: Abstraction has 420 states and 562 transitions. [2020-10-27 15:32:30,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:32:30,284 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 562 transitions. [2020-10-27 15:32:30,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 15:32:30,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:32:30,298 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, 1, 1] [2020-10-27 15:32:30,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 15:32:30,298 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:32:30,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:32:30,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1815494019, now seen corresponding path program 1 times [2020-10-27 15:32:30,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:32:30,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003079353] [2020-10-27 15:32:30,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:32:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:30,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:30,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:30,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:31,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:31,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 15:32:31,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:32:31,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1284 [2020-10-27 15:32:31,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:31,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:32:31,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 15:32:31,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 15:32:31,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:31,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:32:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:31,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:31,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:31,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:32:31,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:32:31,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 15:32:31,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:31,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:32:31,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:32:31,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:32:31,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:31,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:32:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:31,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:31,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:31,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 15:32:31,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:32:31,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 15:32:31,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:31,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:32:31,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:32:31,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 15:32:31,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:31,946 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:32:31,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003079353] [2020-10-27 15:32:31,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:32:31,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:32:31,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336793357] [2020-10-27 15:32:31,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:32:31,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:32:31,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:32:31,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:32:31,949 INFO L87 Difference]: Start difference. First operand 420 states and 562 transitions. Second operand 5 states. [2020-10-27 15:32:32,090 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-27 15:32:33,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:32:33,372 INFO L93 Difference]: Finished difference Result 1249 states and 1705 transitions. [2020-10-27 15:32:33,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:32:33,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-27 15:32:33,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:32:33,381 INFO L225 Difference]: With dead ends: 1249 [2020-10-27 15:32:33,382 INFO L226 Difference]: Without dead ends: 835 [2020-10-27 15:32:33,383 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 [2020-10-27 15:32:33,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2020-10-27 15:32:33,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 696. [2020-10-27 15:32:33,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-10-27 15:32:33,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 918 transitions. [2020-10-27 15:32:33,438 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 918 transitions. Word has length 124 [2020-10-27 15:32:33,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:32:33,439 INFO L481 AbstractCegarLoop]: Abstraction has 696 states and 918 transitions. [2020-10-27 15:32:33,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:32:33,439 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 918 transitions. [2020-10-27 15:32:33,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 15:32:33,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:32:33,443 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:32:33,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 15:32:33,444 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:32:33,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:32:33,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1071179943, now seen corresponding path program 1 times [2020-10-27 15:32:33,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:32:33,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459338779] [2020-10-27 15:32:33,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:32:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:33,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:33,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:34,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:34,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:35,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:35,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 15:32:35,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:32:35,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2085 [2020-10-27 15:32:35,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:32:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-27 15:32:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 15:32:35,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:35,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:32:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:35,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:35,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:35,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:32:35,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:32:35,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:32:35,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:35,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:32:35,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:32:35,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:32:35,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:32:35,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:32:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:35,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:35,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:35,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:32:35,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:32:35,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:32:35,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:35,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:32:35,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:32:35,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:32:35,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:32:35,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:32:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:35,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:36,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:36,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 15:32:36,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:32:36,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 15:32:36,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:36,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:32:36,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:32:36,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 15:32:36,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 15:32:36,305 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 15:32:36,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459338779] [2020-10-27 15:32:36,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:32:36,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:32:36,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112887223] [2020-10-27 15:32:36,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:32:36,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:32:36,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:32:36,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:32:36,311 INFO L87 Difference]: Start difference. First operand 696 states and 918 transitions. Second operand 5 states. [2020-10-27 15:32:37,041 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-27 15:32:37,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:32:37,893 INFO L93 Difference]: Finished difference Result 1468 states and 1993 transitions. [2020-10-27 15:32:37,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:32:37,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-27 15:32:37,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:32:37,900 INFO L225 Difference]: With dead ends: 1468 [2020-10-27 15:32:37,900 INFO L226 Difference]: Without dead ends: 700 [2020-10-27 15:32:37,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:32:37,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-10-27 15:32:37,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 696. [2020-10-27 15:32:37,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-10-27 15:32:37,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 915 transitions. [2020-10-27 15:32:37,948 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 915 transitions. Word has length 144 [2020-10-27 15:32:37,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:32:37,948 INFO L481 AbstractCegarLoop]: Abstraction has 696 states and 915 transitions. [2020-10-27 15:32:37,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:32:37,949 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 915 transitions. [2020-10-27 15:32:37,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 15:32:37,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:32:37,954 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, 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] [2020-10-27 15:32:37,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 15:32:37,955 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:32:37,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:32:37,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1556769077, now seen corresponding path program 1 times [2020-10-27 15:32:37,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:32:37,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707765516] [2020-10-27 15:32:37,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:32:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:38,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:38,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:38,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:39,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:39,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:39,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 15:32:39,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:32:39,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1869 [2020-10-27 15:32:39,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:39,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:32:39,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 15:32:39,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 15:32:39,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:40,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:32:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:40,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:40,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:40,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:32:40,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:32:40,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:32:40,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:40,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:32:40,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:32:40,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:32:40,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:40,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:32:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:40,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:40,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:40,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:32:40,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:32:40,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:32:40,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:40,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:32:40,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:32:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:32:40,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:32:40,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:32:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:40,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:40,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:40,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 15:32:40,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:32:40,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 15:32:40,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:40,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:32:40,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:32:40,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 15:32:40,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:40,384 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 15:32:40,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707765516] [2020-10-27 15:32:40,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:32:40,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:32:40,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738684264] [2020-10-27 15:32:40,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:32:40,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:32:40,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:32:40,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:32:40,394 INFO L87 Difference]: Start difference. First operand 696 states and 915 transitions. Second operand 5 states. [2020-10-27 15:32:41,075 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-27 15:32:41,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:32:41,827 INFO L93 Difference]: Finished difference Result 1464 states and 1982 transitions. [2020-10-27 15:32:41,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:32:41,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-27 15:32:41,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:32:41,837 INFO L225 Difference]: With dead ends: 1464 [2020-10-27 15:32:41,837 INFO L226 Difference]: Without dead ends: 700 [2020-10-27 15:32:41,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:32:41,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-10-27 15:32:41,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 696. [2020-10-27 15:32:41,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-10-27 15:32:41,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 912 transitions. [2020-10-27 15:32:41,879 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 912 transitions. Word has length 146 [2020-10-27 15:32:41,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:32:41,879 INFO L481 AbstractCegarLoop]: Abstraction has 696 states and 912 transitions. [2020-10-27 15:32:41,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:32:41,879 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 912 transitions. [2020-10-27 15:32:41,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-27 15:32:41,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:32:41,883 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:32:41,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 15:32:41,884 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:32:41,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:32:41,884 INFO L82 PathProgramCache]: Analyzing trace with hash -47684518, now seen corresponding path program 1 times [2020-10-27 15:32:41,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:32:41,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768414232] [2020-10-27 15:32:41,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:32:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:41,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:42,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:43,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:43,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-27 15:32:43,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:32:43,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1304 [2020-10-27 15:32:43,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:43,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:32:43,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:32:43,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 15:32:43,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:43,398 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 15:32:43,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:32:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:43,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:43,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:43,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:32:43,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:32:43,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 15:32:43,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:43,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:32:43,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:32:43,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:32:43,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:43,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:32:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:43,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:43,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:43,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 15:32:43,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:32:43,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-27 15:32:43,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:43,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:32:43,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:32:43,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 15:32:43,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:32:43,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768414232] [2020-10-27 15:32:43,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:32:43,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 15:32:43,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581348172] [2020-10-27 15:32:43,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:32:43,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:32:43,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:32:43,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:32:43,796 INFO L87 Difference]: Start difference. First operand 696 states and 912 transitions. Second operand 7 states. [2020-10-27 15:32:43,940 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-27 15:32:45,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:32:45,649 INFO L93 Difference]: Finished difference Result 1950 states and 2577 transitions. [2020-10-27 15:32:45,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:32:45,650 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-10-27 15:32:45,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:32:45,658 INFO L225 Difference]: With dead ends: 1950 [2020-10-27 15:32:45,658 INFO L226 Difference]: Without dead ends: 1123 [2020-10-27 15:32:45,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:32:45,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-10-27 15:32:45,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 982. [2020-10-27 15:32:45,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 982 states. [2020-10-27 15:32:45,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1249 transitions. [2020-10-27 15:32:45,705 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1249 transitions. Word has length 163 [2020-10-27 15:32:45,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:32:45,706 INFO L481 AbstractCegarLoop]: Abstraction has 982 states and 1249 transitions. [2020-10-27 15:32:45,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:32:45,706 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1249 transitions. [2020-10-27 15:32:45,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-27 15:32:45,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:32:45,711 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:32:45,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 15:32:45,711 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:32:45,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:32:45,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1785341688, now seen corresponding path program 1 times [2020-10-27 15:32:45,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:32:45,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4949933] [2020-10-27 15:32:45,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:32:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:45,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:45,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:46,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:46,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:48,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:48,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:48,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-27 15:32:48,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:32:48,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2670 [2020-10-27 15:32:48,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:48,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:32:48,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-27 15:32:48,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 15:32:48,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:48,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:32:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:48,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:48,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:48,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:32:48,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:32:48,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:32:48,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:32:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:32:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:32:48,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:48,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:32:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:48,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:48,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:48,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:32:48,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:32:48,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:32:48,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:32:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:32:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:32:48,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:48,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:32:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:48,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:48,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:48,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 15:32:48,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:32:48,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 15:32:48,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:48,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:32:48,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:32:48,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 15:32:48,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:48,930 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 15:32:48,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4949933] [2020-10-27 15:32:48,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:32:48,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:32:48,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633249961] [2020-10-27 15:32:48,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:32:48,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:32:48,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:32:48,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:32:48,933 INFO L87 Difference]: Start difference. First operand 982 states and 1249 transitions. Second operand 5 states. [2020-10-27 15:32:49,801 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-27 15:32:50,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:32:50,489 INFO L93 Difference]: Finished difference Result 2042 states and 2659 transitions. [2020-10-27 15:32:50,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:32:50,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-27 15:32:50,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:32:50,496 INFO L225 Difference]: With dead ends: 2042 [2020-10-27 15:32:50,496 INFO L226 Difference]: Without dead ends: 986 [2020-10-27 15:32:50,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:32:50,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-10-27 15:32:50,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 982. [2020-10-27 15:32:50,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 982 states. [2020-10-27 15:32:50,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1246 transitions. [2020-10-27 15:32:50,539 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1246 transitions. Word has length 171 [2020-10-27 15:32:50,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:32:50,540 INFO L481 AbstractCegarLoop]: Abstraction has 982 states and 1246 transitions. [2020-10-27 15:32:50,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:32:50,540 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1246 transitions. [2020-10-27 15:32:50,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-27 15:32:50,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:32:50,544 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:32:50,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 15:32:50,545 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:32:50,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:32:50,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1264026819, now seen corresponding path program 1 times [2020-10-27 15:32:50,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:32:50,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779601918] [2020-10-27 15:32:50,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:32:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:50,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:50,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:51,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:51,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-27 15:32:51,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:32:51,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 984 [2020-10-27 15:32:51,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:32:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 15:32:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 15:32:51,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:51,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:32:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:51,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:51,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:51,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:32:51,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:32:51,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:32:51,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:51,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:32:51,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:32:51,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:32:51,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:51,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:32:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:51,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:51,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:51,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 15:32:51,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:32:51,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 15:32:51,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:51,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:32:51,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:32:51,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 15:32:51,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:51,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 15:32:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:51,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:51,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:51,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 15:32:51,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:32:51,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 15:32:51,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:51,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:32:51,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:32:51,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 15:32:51,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 15:32:52,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779601918] [2020-10-27 15:32:52,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:32:52,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:32:52,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966105965] [2020-10-27 15:32:52,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:32:52,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:32:52,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:32:52,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:32:52,247 INFO L87 Difference]: Start difference. First operand 982 states and 1246 transitions. Second operand 7 states. [2020-10-27 15:32:53,446 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-27 15:32:54,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:32:54,331 INFO L93 Difference]: Finished difference Result 2260 states and 2916 transitions. [2020-10-27 15:32:54,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 15:32:54,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2020-10-27 15:32:54,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:32:54,337 INFO L225 Difference]: With dead ends: 2260 [2020-10-27 15:32:54,337 INFO L226 Difference]: Without dead ends: 871 [2020-10-27 15:32:54,341 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 [2020-10-27 15:32:54,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-10-27 15:32:54,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 841. [2020-10-27 15:32:54,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 841 states. [2020-10-27 15:32:54,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 924 transitions. [2020-10-27 15:32:54,380 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 924 transitions. Word has length 174 [2020-10-27 15:32:54,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:32:54,381 INFO L481 AbstractCegarLoop]: Abstraction has 841 states and 924 transitions. [2020-10-27 15:32:54,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:32:54,381 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 924 transitions. [2020-10-27 15:32:54,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-27 15:32:54,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:32:54,386 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:32:54,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 15:32:54,386 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:32:54,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:32:54,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1842581197, now seen corresponding path program 1 times [2020-10-27 15:32:54,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:32:54,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974111231] [2020-10-27 15:32:54,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:32:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:54,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:54,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:54,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:58,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:58,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 15:32:58,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:32:58,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4557 [2020-10-27 15:32:58,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:58,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 15:32:58,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 15:32:58,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 15:32:58,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:59,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:32:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:59,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:59,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:59,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:32:59,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:32:59,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:32:59,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:59,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:32:59,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:32:59,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:32:59,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:59,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:32:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:59,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:59,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:59,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 15:32:59,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:32:59,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 15:32:59,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:59,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:32:59,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:32:59,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 15:32:59,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:59,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 15:32:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:32:59,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:59,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:32:59,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:32:59,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 15:32:59,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:32:59,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-27 15:32:59,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:32:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:32:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:32:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 15:32:59,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:32:59,943 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 15:32:59,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974111231] [2020-10-27 15:32:59,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:32:59,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 15:32:59,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745201497] [2020-10-27 15:32:59,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 15:32:59,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:32:59,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 15:32:59,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:32:59,946 INFO L87 Difference]: Start difference. First operand 841 states and 924 transitions. Second operand 8 states. [2020-10-27 15:33:00,349 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 15:33:01,030 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-27 15:33:02,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:33:02,202 INFO L93 Difference]: Finished difference Result 1871 states and 2126 transitions. [2020-10-27 15:33:02,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 15:33:02,203 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 182 [2020-10-27 15:33:02,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:33:02,212 INFO L225 Difference]: With dead ends: 1871 [2020-10-27 15:33:02,212 INFO L226 Difference]: Without dead ends: 1036 [2020-10-27 15:33:02,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-27 15:33:02,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2020-10-27 15:33:02,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 980. [2020-10-27 15:33:02,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 980 states. [2020-10-27 15:33:02,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1073 transitions. [2020-10-27 15:33:02,268 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1073 transitions. Word has length 182 [2020-10-27 15:33:02,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:33:02,268 INFO L481 AbstractCegarLoop]: Abstraction has 980 states and 1073 transitions. [2020-10-27 15:33:02,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 15:33:02,268 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1073 transitions. [2020-10-27 15:33:02,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-27 15:33:02,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:33:02,273 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 15:33:02,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 15:33:02,273 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:33:02,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:33:02,274 INFO L82 PathProgramCache]: Analyzing trace with hash -2143538369, now seen corresponding path program 1 times [2020-10-27 15:33:02,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:33:02,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490314581] [2020-10-27 15:33:02,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:33:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:02,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:02,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:02,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:04,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:04,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-27 15:33:04,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:33:04,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2273 [2020-10-27 15:33:04,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:04,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:33:04,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 15:33:04,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 15:33:04,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:04,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:33:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:04,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:04,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:04,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:33:04,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:33:04,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:33:04,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:04,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:33:04,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:33:04,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:33:04,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:04,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:33:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:04,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:04,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:04,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:33:04,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:33:04,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:33:04,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:33:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:33:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 15:33:04,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:04,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 15:33:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:04,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:04,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:04,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:33:04,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:33:04,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 15:33:04,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:04,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:33:04,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:33:04,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 15:33:04,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:04,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 15:33:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:04,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:04,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:04,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 15:33:04,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:33:04,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 15:33:04,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:04,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:33:04,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 15:33:04,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:33:04,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:04,949 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 94 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 15:33:04,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490314581] [2020-10-27 15:33:04,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:33:04,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:33:04,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840835576] [2020-10-27 15:33:04,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:33:04,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:33:04,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:33:04,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:33:04,952 INFO L87 Difference]: Start difference. First operand 980 states and 1073 transitions. Second operand 7 states. [2020-10-27 15:33:05,083 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-27 15:33:06,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:33:06,533 INFO L93 Difference]: Finished difference Result 2653 states and 2965 transitions. [2020-10-27 15:33:06,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 15:33:06,534 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2020-10-27 15:33:06,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:33:06,542 INFO L225 Difference]: With dead ends: 2653 [2020-10-27 15:33:06,542 INFO L226 Difference]: Without dead ends: 1679 [2020-10-27 15:33:06,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-27 15:33:06,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2020-10-27 15:33:06,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 1538. [2020-10-27 15:33:06,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1538 states. [2020-10-27 15:33:06,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 1707 transitions. [2020-10-27 15:33:06,608 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 1707 transitions. Word has length 184 [2020-10-27 15:33:06,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:33:06,608 INFO L481 AbstractCegarLoop]: Abstraction has 1538 states and 1707 transitions. [2020-10-27 15:33:06,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:33:06,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 1707 transitions. [2020-10-27 15:33:06,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-27 15:33:06,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:33:06,615 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 15:33:06,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 15:33:06,615 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:33:06,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:33:06,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1690938633, now seen corresponding path program 1 times [2020-10-27 15:33:06,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:33:06,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798632416] [2020-10-27 15:33:06,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:33:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:06,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:06,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:06,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:10,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:10,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-27 15:33:10,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:33:10,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4292 [2020-10-27 15:33:10,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:10,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:33:10,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 15:33:10,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 15:33:10,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:11,121 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 15:33:11,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:33:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:11,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:11,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:11,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:33:11,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:33:11,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:33:11,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:11,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:33:11,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:33:11,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:33:11,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:11,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:33:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:11,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:11,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:11,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 15:33:11,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:33:11,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 15:33:11,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:11,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:33:11,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:33:11,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 15:33:11,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:11,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 15:33:11,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:11,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:11,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:11,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 15:33:11,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:33:11,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 15:33:11,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:11,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:33:11,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:33:11,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 15:33:11,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:11,509 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 15:33:11,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798632416] [2020-10-27 15:33:11,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:33:11,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 15:33:11,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698261814] [2020-10-27 15:33:11,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 15:33:11,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:33:11,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 15:33:11,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:33:11,511 INFO L87 Difference]: Start difference. First operand 1538 states and 1707 transitions. Second operand 8 states. [2020-10-27 15:33:11,653 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-27 15:33:13,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:33:13,972 INFO L93 Difference]: Finished difference Result 3503 states and 3947 transitions. [2020-10-27 15:33:13,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 15:33:13,973 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2020-10-27 15:33:13,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:33:13,982 INFO L225 Difference]: With dead ends: 3503 [2020-10-27 15:33:13,982 INFO L226 Difference]: Without dead ends: 1971 [2020-10-27 15:33:13,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-27 15:33:13,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2020-10-27 15:33:14,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1949. [2020-10-27 15:33:14,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1949 states. [2020-10-27 15:33:14,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 2144 transitions. [2020-10-27 15:33:14,047 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 2144 transitions. Word has length 196 [2020-10-27 15:33:14,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:33:14,048 INFO L481 AbstractCegarLoop]: Abstraction has 1949 states and 2144 transitions. [2020-10-27 15:33:14,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 15:33:14,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 2144 transitions. [2020-10-27 15:33:14,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-27 15:33:14,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:33:14,055 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:33:14,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 15:33:14,056 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:33:14,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:33:14,056 INFO L82 PathProgramCache]: Analyzing trace with hash 889220371, now seen corresponding path program 1 times [2020-10-27 15:33:14,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:33:14,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974695563] [2020-10-27 15:33:14,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:33:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:14,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:14,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:14,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:19,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:19,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 15:33:19,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:33:19,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 15:33:19,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:19,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 15:33:19,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 15:33:19,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 15:33:19,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:19,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:33:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:19,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:19,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:19,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:33:19,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:33:19,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:33:19,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:19,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:33:19,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:33:19,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:33:19,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:19,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:33:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:19,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:19,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:19,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 15:33:19,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:33:19,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:33:19,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:19,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:33:19,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:33:19,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:33:19,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:19,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 15:33:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:19,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:19,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:19,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 15:33:19,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:33:19,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 15:33:19,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:19,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:33:19,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:33:19,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 15:33:19,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:19,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 15:33:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:19,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:19,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:19,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:19,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 15:33:19,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:33:19,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-27 15:33:19,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:19,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 15:33:19,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:33:19,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 15:33:19,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:20,133 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 53 [2020-10-27 15:33:20,487 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 89 [2020-10-27 15:33:20,832 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 90 [2020-10-27 15:33:21,228 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 93 [2020-10-27 15:33:21,631 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 95 [2020-10-27 15:33:22,039 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 98 [2020-10-27 15:33:22,710 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 15:33:22,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974695563] [2020-10-27 15:33:22,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:33:22,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 15:33:22,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608356660] [2020-10-27 15:33:22,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 15:33:22,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:33:22,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 15:33:22,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-27 15:33:22,712 INFO L87 Difference]: Start difference. First operand 1949 states and 2144 transitions. Second operand 13 states. [2020-10-27 15:33:23,025 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 94 [2020-10-27 15:33:23,569 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 119 [2020-10-27 15:33:23,775 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 15:33:24,151 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 107 [2020-10-27 15:33:24,724 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 121 [2020-10-27 15:33:25,241 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 124 [2020-10-27 15:33:25,771 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 110 [2020-10-27 15:33:26,276 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 126 [2020-10-27 15:33:26,547 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 66 [2020-10-27 15:33:27,134 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 113 [2020-10-27 15:33:27,697 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 110 [2020-10-27 15:33:28,230 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 113 [2020-10-27 15:33:28,720 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 129 [2020-10-27 15:33:29,329 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 150 [2020-10-27 15:33:29,917 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 115 [2020-10-27 15:33:30,314 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 64 [2020-10-27 15:33:31,105 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 118 [2020-10-27 15:33:31,743 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 122 [2020-10-27 15:33:32,196 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2020-10-27 15:33:32,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:33:32,981 INFO L93 Difference]: Finished difference Result 3910 states and 4316 transitions. [2020-10-27 15:33:32,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 15:33:32,982 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 224 [2020-10-27 15:33:32,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:33:32,991 INFO L225 Difference]: With dead ends: 3910 [2020-10-27 15:33:32,991 INFO L226 Difference]: Without dead ends: 1771 [2020-10-27 15:33:32,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2020-10-27 15:33:32,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2020-10-27 15:33:33,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1737. [2020-10-27 15:33:33,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1737 states. [2020-10-27 15:33:33,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 1920 transitions. [2020-10-27 15:33:33,057 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 1920 transitions. Word has length 224 [2020-10-27 15:33:33,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:33:33,058 INFO L481 AbstractCegarLoop]: Abstraction has 1737 states and 1920 transitions. [2020-10-27 15:33:33,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 15:33:33,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 1920 transitions. [2020-10-27 15:33:33,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-27 15:33:33,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:33:33,066 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:33:33,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 15:33:33,067 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:33:33,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:33:33,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1662131198, now seen corresponding path program 1 times [2020-10-27 15:33:33,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:33:33,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846980200] [2020-10-27 15:33:33,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:33:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:33,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:33,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:33,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:33,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:38,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:38,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-27 15:33:38,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:33:38,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-27 15:33:38,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 15:33:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-27 15:33:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 15:33:38,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:38,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:33:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:38,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:38,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:38,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:33:38,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:33:38,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 15:33:38,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:38,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:33:38,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:33:38,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:33:38,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:38,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:33:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:38,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:38,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:38,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 15:33:38,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:33:38,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:33:38,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:38,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:33:38,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:33:38,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:33:38,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:38,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 15:33:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:38,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:38,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:38,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 15:33:38,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:33:38,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 15:33:38,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:38,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:33:38,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:33:38,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 15:33:38,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:38,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 15:33:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:38,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:38,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:38,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:38,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 15:33:38,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:33:38,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-27 15:33:38,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:38,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 15:33:38,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:33:38,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 15:33:38,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:39,520 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 70 [2020-10-27 15:33:39,893 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 74 [2020-10-27 15:33:40,294 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2020-10-27 15:33:40,714 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 79 [2020-10-27 15:33:41,140 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 82 [2020-10-27 15:33:41,315 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2020-10-27 15:33:41,793 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-27 15:33:41,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846980200] [2020-10-27 15:33:41,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:33:41,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 15:33:41,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158780164] [2020-10-27 15:33:41,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 15:33:41,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:33:41,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 15:33:41,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-27 15:33:41,795 INFO L87 Difference]: Start difference. First operand 1737 states and 1920 transitions. Second operand 13 states. [2020-10-27 15:33:41,994 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-27 15:33:42,422 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 124 [2020-10-27 15:33:42,856 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 129 [2020-10-27 15:33:43,511 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 131 [2020-10-27 15:33:43,930 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 95 [2020-10-27 15:33:44,453 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 135 [2020-10-27 15:33:45,023 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 137 [2020-10-27 15:33:45,701 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 154 [2020-10-27 15:33:46,180 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 71 [2020-10-27 15:33:46,396 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-27 15:33:46,594 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 15:33:47,094 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 116 [2020-10-27 15:33:47,651 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 120 [2020-10-27 15:33:48,564 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 122 [2020-10-27 15:33:49,228 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 125 [2020-10-27 15:33:49,527 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2020-10-27 15:33:50,264 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 127 [2020-10-27 15:33:50,963 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 133 [2020-10-27 15:33:51,429 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2020-10-27 15:33:51,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:33:51,780 INFO L93 Difference]: Finished difference Result 3615 states and 4035 transitions. [2020-10-27 15:33:51,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 15:33:51,780 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 247 [2020-10-27 15:33:51,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:33:51,788 INFO L225 Difference]: With dead ends: 3615 [2020-10-27 15:33:51,788 INFO L226 Difference]: Without dead ends: 1636 [2020-10-27 15:33:51,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=273, Invalid=719, Unknown=0, NotChecked=0, Total=992 [2020-10-27 15:33:51,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2020-10-27 15:33:51,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1611. [2020-10-27 15:33:51,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1611 states. [2020-10-27 15:33:51,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 1774 transitions. [2020-10-27 15:33:51,849 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 1774 transitions. Word has length 247 [2020-10-27 15:33:51,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:33:51,849 INFO L481 AbstractCegarLoop]: Abstraction has 1611 states and 1774 transitions. [2020-10-27 15:33:51,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 15:33:51,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 1774 transitions. [2020-10-27 15:33:51,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-27 15:33:51,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:33:51,857 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:33:51,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 15:33:51,857 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:33:51,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:33:51,858 INFO L82 PathProgramCache]: Analyzing trace with hash 35065597, now seen corresponding path program 1 times [2020-10-27 15:33:51,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:33:51,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143702974] [2020-10-27 15:33:51,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:33:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:51,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:51,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:53,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:53,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-27 15:33:53,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:33:53,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1253 [2020-10-27 15:33:53,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:53,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:33:53,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 15:33:53,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 15:33:53,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:53,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:33:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:53,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:53,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:53,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:33:53,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:33:53,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:33:53,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:53,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:33:53,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:33:53,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:33:53,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:53,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:33:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:53,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:53,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:53,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 15:33:53,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:33:53,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 15:33:53,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:53,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:33:53,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:33:53,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 15:33:53,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:53,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 15:33:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:53,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:53,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:53,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 15:33:53,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:33:53,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 15:33:53,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:53,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:33:53,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:33:53,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 15:33:53,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:53,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 15:33:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:53,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:53,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:53,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 15:33:53,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:33:53,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:33:53,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:53,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:33:53,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 15:33:53,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:33:53,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:53,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-27 15:33:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:53,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:53,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:33:53,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 15:33:53,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:33:53,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 15:33:53,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:33:53,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:33:53,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 15:33:53,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:33:53,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:33:53,642 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 196 proven. 60 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-27 15:33:53,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143702974] [2020-10-27 15:33:53,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:33:53,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 15:33:53,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080403995] [2020-10-27 15:33:53,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 15:33:53,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:33:53,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 15:33:53,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:33:53,645 INFO L87 Difference]: Start difference. First operand 1611 states and 1774 transitions. Second operand 8 states. [2020-10-27 15:33:53,870 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-27 15:33:54,436 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-27 15:33:56,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:33:56,492 INFO L93 Difference]: Finished difference Result 4151 states and 4676 transitions. [2020-10-27 15:33:56,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:33:56,493 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 260 [2020-10-27 15:33:56,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:33:56,505 INFO L225 Difference]: With dead ends: 4151 [2020-10-27 15:33:56,505 INFO L226 Difference]: Without dead ends: 2546 [2020-10-27 15:33:56,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 15:33:56,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2020-10-27 15:33:56,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2534. [2020-10-27 15:33:56,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2534 states. [2020-10-27 15:33:56,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 2843 transitions. [2020-10-27 15:33:56,606 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 2843 transitions. Word has length 260 [2020-10-27 15:33:56,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:33:56,606 INFO L481 AbstractCegarLoop]: Abstraction has 2534 states and 2843 transitions. [2020-10-27 15:33:56,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 15:33:56,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 2843 transitions. [2020-10-27 15:33:56,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-27 15:33:56,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:33:56,619 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:33:56,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 15:33:56,619 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:33:56,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:33:56,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1982081604, now seen corresponding path program 1 times [2020-10-27 15:33:56,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:33:56,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130586130] [2020-10-27 15:33:56,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:33:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:33:56,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:56,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:56,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:56,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:33:56,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:34:01,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:34:01,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-27 15:34:01,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:34:01,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 15:34:01,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:34:01,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:34:01,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-27 15:34:01,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 15:34:01,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:34:01,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:34:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:34:01,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:34:01,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:34:01,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:34:01,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:34:01,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:34:01,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:34:01,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:34:01,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:34:01,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:34:01,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:34:01,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:34:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:34:01,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:34:01,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:34:01,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 15:34:01,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:34:01,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:34:01,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:34:01,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:34:01,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:34:01,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:34:01,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:34:01,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 15:34:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:34:01,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:34:01,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:34:01,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:34:01,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:34:01,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 15:34:01,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:34:01,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:34:01,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:34:01,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:34:01,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:34:01,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 15:34:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:34:01,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:34:01,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:34:01,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 15:34:01,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:34:01,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 15:34:01,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:34:01,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:34:01,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:34:01,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 15:34:01,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:34:01,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-27 15:34:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:34:01,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:34:02,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:34:02,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 15:34:02,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:34:02,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 15:34:02,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:34:02,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:34:02,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:34:02,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 15:34:02,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:34:02,151 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-27 15:34:02,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130586130] [2020-10-27 15:34:02,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:34:02,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:34:02,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824266348] [2020-10-27 15:34:02,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:34:02,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:34:02,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:34:02,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:34:02,153 INFO L87 Difference]: Start difference. First operand 2534 states and 2843 transitions. Second operand 7 states. [2020-10-27 15:34:02,539 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-27 15:34:04,145 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 15:34:04,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:34:04,176 INFO L93 Difference]: Finished difference Result 5612 states and 6307 transitions. [2020-10-27 15:34:04,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:34:04,177 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2020-10-27 15:34:04,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:34:04,189 INFO L225 Difference]: With dead ends: 5612 [2020-10-27 15:34:04,189 INFO L226 Difference]: Without dead ends: 2669 [2020-10-27 15:34:04,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:34:04,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2020-10-27 15:34:04,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 2663. [2020-10-27 15:34:04,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2663 states. [2020-10-27 15:34:04,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 2943 transitions. [2020-10-27 15:34:04,292 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 2943 transitions. Word has length 265 [2020-10-27 15:34:04,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:34:04,293 INFO L481 AbstractCegarLoop]: Abstraction has 2663 states and 2943 transitions. [2020-10-27 15:34:04,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:34:04,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 2943 transitions. [2020-10-27 15:34:04,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-27 15:34:04,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:34:04,305 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:34:04,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 15:34:04,306 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:34:04,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:34:04,306 INFO L82 PathProgramCache]: Analyzing trace with hash -360362919, now seen corresponding path program 1 times [2020-10-27 15:34:04,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:34:04,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192308874] [2020-10-27 15:34:04,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:34:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 15:34:04,376 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 15:34:04,376 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 15:34:04,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 15:34:04,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:34:04 BoogieIcfgContainer [2020-10-27 15:34:04,428 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 15:34:04,430 INFO L168 Benchmark]: Toolchain (without parser) took 107809.54 ms. Allocated memory was 125.8 MB in the beginning and 941.6 MB in the end (delta: 815.8 MB). Free memory was 99.3 MB in the beginning and 475.3 MB in the end (delta: -375.9 MB). Peak memory consumption was 440.9 MB. Max. memory is 8.0 GB. [2020-10-27 15:34:04,430 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 15:34:04,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 829.69 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 98.6 MB in the beginning and 131.1 MB in the end (delta: -32.5 MB). Peak memory consumption was 31.7 MB. Max. memory is 8.0 GB. [2020-10-27 15:34:04,431 INFO L168 Benchmark]: Boogie Preprocessor took 115.43 ms. Allocated memory is still 151.0 MB. Free memory was 131.1 MB in the beginning and 125.9 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-27 15:34:04,432 INFO L168 Benchmark]: RCFGBuilder took 1462.06 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 70.5 MB in the end (delta: 55.5 MB). Peak memory consumption was 59.0 MB. Max. memory is 8.0 GB. [2020-10-27 15:34:04,432 INFO L168 Benchmark]: TraceAbstraction took 105389.22 ms. Allocated memory was 151.0 MB in the beginning and 941.6 MB in the end (delta: 790.6 MB). Free memory was 70.0 MB in the beginning and 475.3 MB in the end (delta: -405.3 MB). Peak memory consumption was 385.9 MB. Max. memory is 8.0 GB. [2020-10-27 15:34:04,434 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 829.69 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 98.6 MB in the beginning and 131.1 MB in the end (delta: -32.5 MB). Peak memory consumption was 31.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 115.43 ms. Allocated memory is still 151.0 MB. Free memory was 131.1 MB in the beginning and 125.9 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1462.06 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 70.5 MB in the end (delta: 55.5 MB). Peak memory consumption was 59.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 105389.22 ms. Allocated memory was 151.0 MB in the beginning and 941.6 MB in the end (delta: 790.6 MB). Free memory was 70.0 MB in the beginning and 475.3 MB in the end (delta: -405.3 MB). Peak memory consumption was 385.9 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 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 TRUE ((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))))))) [L385] a20 = 0 [L386] a21 = 1 [L387] a8 = 14 [L388] a17 = 0 [L389] a16 = 5 [L390] a7 = 1 [L391] 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 FALSE !(((((((!(a17==1)&&(a7==1))&&(a20==1))&&(a8==14))&&(a12==8))&&(a16==5))&&(a21==1))) [L423] COND FALSE !(((((((!(a17==1)&&!(a7==1))&&(a20==1))&&(a8==13))&&(a12==8))&&(a16==4))&&(a21==1))) [L426] COND TRUE ((((((!(a17==1)&&(a7==1))&&!(a20==1))&&(a8==14))&&(a12==8))&&(a16==5))&&(a21==1)) [L427] CALL reach_error() [L4] __assert_fail("0", "Problem01_label21.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: 105.2s, OverallIterations: 17, TraceHistogramMax: 5, AutomataDifference: 46.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 484 SDtfs, 5771 SDslu, 627 SDs, 0 SdLazy, 13375 SolverSat, 1459 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 309 GetRequests, 142 SyntacticMatches, 9 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 25.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2663occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 16 MinimizatonAttempts, 632 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 54.3s InterpolantComputationTime, 3067 NumberOfCodeBlocks, 3067 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 2761 ConstructedInterpolants, 0 QuantifiedInterpolants, 6218512 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 1786/1879 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...