/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=SHALLOWEST --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_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 20:36:10,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 20:36:10,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 20:36:10,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 20:36:10,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 20:36:10,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 20:36:10,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 20:36:10,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 20:36:10,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 20:36:10,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 20:36:10,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 20:36:10,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 20:36:10,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 20:36:10,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 20:36:10,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 20:36:10,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 20:36:10,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 20:36:10,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 20:36:10,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 20:36:10,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 20:36:10,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 20:36:10,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 20:36:10,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 20:36:10,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 20:36:10,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 20:36:10,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 20:36:10,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 20:36:10,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 20:36:10,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 20:36:10,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 20:36:10,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 20:36:10,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 20:36:10,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 20:36:10,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 20:36:10,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 20:36:10,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 20:36:10,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 20:36:10,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 20:36:10,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 20:36:10,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 20:36:10,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 20:36:10,398 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 [2020-10-26 20:36:10,424 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 20:36:10,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 20:36:10,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 20:36:10,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 20:36:10,426 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 20:36:10,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 20:36:10,427 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 20:36:10,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 20:36:10,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 20:36:10,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 20:36:10,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 20:36:10,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 20:36:10,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 20:36:10,428 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 20:36:10,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 20:36:10,428 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 20:36:10,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 20:36:10,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 20:36:10,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 20:36:10,429 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 20:36:10,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 20:36:10,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:36:10,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 20:36:10,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 20:36:10,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 20:36:10,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 20:36:10,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 20:36:10,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 20:36:10,431 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 20:36:10,431 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 20:36:10,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 20:36:10,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 20:36:10,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 20:36:10,839 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 20:36:10,840 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 20:36:10,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2020-10-26 20:36:10,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8117945e9/22233a0c8da34bea9f3da0f2d596e86b/FLAG4c8b8eb36 [2020-10-26 20:36:11,664 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 20:36:11,665 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2020-10-26 20:36:11,695 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8117945e9/22233a0c8da34bea9f3da0f2d596e86b/FLAG4c8b8eb36 [2020-10-26 20:36:11,924 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8117945e9/22233a0c8da34bea9f3da0f2d596e86b [2020-10-26 20:36:11,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 20:36:11,934 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 20:36:11,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 20:36:11,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 20:36:11,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 20:36:11,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:36:11" (1/1) ... [2020-10-26 20:36:11,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@572ef533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:11, skipping insertion in model container [2020-10-26 20:36:11,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:36:11" (1/1) ... [2020-10-26 20:36:11,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 20:36:12,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 20:36:12,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:36:12,474 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 20:36:12,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:36:12,612 INFO L208 MainTranslator]: Completed translation [2020-10-26 20:36:12,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:12 WrapperNode [2020-10-26 20:36:12,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 20:36:12,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 20:36:12,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 20:36:12,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 20:36:12,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:12" (1/1) ... [2020-10-26 20:36:12,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:12" (1/1) ... [2020-10-26 20:36:12,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:12" (1/1) ... [2020-10-26 20:36:12,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:12" (1/1) ... [2020-10-26 20:36:12,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:12" (1/1) ... [2020-10-26 20:36:12,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:12" (1/1) ... [2020-10-26 20:36:12,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:12" (1/1) ... [2020-10-26 20:36:12,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 20:36:12,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 20:36:12,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 20:36:12,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 20:36:12,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:12" (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 [2020-10-26 20:36:12,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 20:36:12,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 20:36:12,829 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 20:36:12,829 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 20:36:12,830 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 20:36:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 20:36:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 20:36:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 20:36:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 20:36:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 20:36:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 20:36:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 20:36:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 20:36:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 20:36:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 20:36:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 20:36:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 20:36:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 20:36:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 20:36:14,464 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 20:36:14,464 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 20:36:14,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:36:14 BoogieIcfgContainer [2020-10-26 20:36:14,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 20:36:14,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 20:36:14,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 20:36:14,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 20:36:14,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:36:11" (1/3) ... [2020-10-26 20:36:14,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f0a1fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:36:14, skipping insertion in model container [2020-10-26 20:36:14,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:36:12" (2/3) ... [2020-10-26 20:36:14,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f0a1fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:36:14, skipping insertion in model container [2020-10-26 20:36:14,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:36:14" (3/3) ... [2020-10-26 20:36:14,482 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label50.c [2020-10-26 20:36:14,494 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 20:36:14,500 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 20:36:14,514 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 20:36:14,546 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 20:36:14,546 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 20:36:14,546 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 20:36:14,547 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 20:36:14,547 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 20:36:14,547 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 20:36:14,547 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 20:36:14,547 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 20:36:14,568 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states. [2020-10-26 20:36:14,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-26 20:36:14,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:14,579 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] [2020-10-26 20:36:14,579 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:14,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:14,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1745001687, now seen corresponding path program 1 times [2020-10-26 20:36:14,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:14,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528776777] [2020-10-26 20:36:14,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:14,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:15,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:16,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:16,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 20:36:16,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:36:16,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1980 [2020-10-26 20:36:16,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:16,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:36:16,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:36:16,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 20:36:16,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 20:36:17,175 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:36:17,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:17,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:17,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:17,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:17,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:17,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 20:36:17,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:17,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:17,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:17,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:36:17,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:17,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:36:17,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528776777] [2020-10-26 20:36:17,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:36:17,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 20:36:17,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191042140] [2020-10-26 20:36:17,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:36:17,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:17,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:36:17,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:36:17,313 INFO L87 Difference]: Start difference. First operand 211 states. Second operand 4 states. [2020-10-26 20:36:17,552 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-26 20:36:19,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:19,468 INFO L93 Difference]: Finished difference Result 562 states and 962 transitions. [2020-10-26 20:36:19,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 20:36:19,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-10-26 20:36:19,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:19,486 INFO L225 Difference]: With dead ends: 562 [2020-10-26 20:36:19,486 INFO L226 Difference]: Without dead ends: 287 [2020-10-26 20:36:19,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:36:19,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-26 20:36:19,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 281. [2020-10-26 20:36:19,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-10-26 20:36:19,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 403 transitions. [2020-10-26 20:36:19,579 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 403 transitions. Word has length 86 [2020-10-26 20:36:19,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:19,580 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 403 transitions. [2020-10-26 20:36:19,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:36:19,580 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 403 transitions. [2020-10-26 20:36:19,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-26 20:36:19,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:19,587 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] [2020-10-26 20:36:19,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 20:36:19,587 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:19,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:19,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1209053789, now seen corresponding path program 1 times [2020-10-26 20:36:19,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:19,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201433217] [2020-10-26 20:36:19,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:19,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:19,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:20,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:20,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:20,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 20:36:20,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:36:20,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1068 [2020-10-26 20:36:20,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:20,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:36:20,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:36:20,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-26 20:36:20,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:20,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:20,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:20,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:20,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:20,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:20,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:36:20,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:20,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:20,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:36:20,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:20,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:20,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:20,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:20,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:20,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:36:20,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:36:20,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 20:36:20,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:20,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:20,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:20,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 20:36:20,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:20,971 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 20:36:20,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201433217] [2020-10-26 20:36:20,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:20,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 20:36:20,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516432] [2020-10-26 20:36:20,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:36:20,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:20,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:36:20,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:36:20,976 INFO L87 Difference]: Start difference. First operand 281 states and 403 transitions. Second operand 6 states. [2020-10-26 20:36:22,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:22,585 INFO L93 Difference]: Finished difference Result 852 states and 1260 transitions. [2020-10-26 20:36:22,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 20:36:22,586 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2020-10-26 20:36:22,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:22,593 INFO L225 Difference]: With dead ends: 852 [2020-10-26 20:36:22,594 INFO L226 Difference]: Without dead ends: 577 [2020-10-26 20:36:22,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:36:22,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2020-10-26 20:36:22,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 563. [2020-10-26 20:36:22,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-10-26 20:36:22,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 795 transitions. [2020-10-26 20:36:22,684 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 795 transitions. Word has length 96 [2020-10-26 20:36:22,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:22,686 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 795 transitions. [2020-10-26 20:36:22,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:36:22,686 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 795 transitions. [2020-10-26 20:36:22,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-26 20:36:22,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:22,702 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] [2020-10-26 20:36:22,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 20:36:22,702 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:22,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:22,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1023323450, now seen corresponding path program 1 times [2020-10-26 20:36:22,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:22,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873649511] [2020-10-26 20:36:22,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:22,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:23,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:23,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 20:36:23,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:23,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-26 20:36:23,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:36:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:36:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 20:36:23,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:23,247 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:36:23,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:23,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:23,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:23,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:23,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:23,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 20:36:23,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:23,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:23,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:23,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:36:23,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:23,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:23,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:23,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:23,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:36:23,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:23,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 20:36:23,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:23,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:23,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:23,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:36:23,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:36:23,440 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:36:23,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873649511] [2020-10-26 20:36:23,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:36:23,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 20:36:23,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714202712] [2020-10-26 20:36:23,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:36:23,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:23,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:36:23,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:36:23,449 INFO L87 Difference]: Start difference. First operand 563 states and 795 transitions. Second operand 7 states. [2020-10-26 20:36:23,582 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 20:36:25,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:25,380 INFO L93 Difference]: Finished difference Result 1428 states and 2056 transitions. [2020-10-26 20:36:25,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:36:25,382 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2020-10-26 20:36:25,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:25,389 INFO L225 Difference]: With dead ends: 1428 [2020-10-26 20:36:25,389 INFO L226 Difference]: Without dead ends: 871 [2020-10-26 20:36:25,391 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 [2020-10-26 20:36:25,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-10-26 20:36:25,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 712. [2020-10-26 20:36:25,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2020-10-26 20:36:25,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 957 transitions. [2020-10-26 20:36:25,438 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 957 transitions. Word has length 103 [2020-10-26 20:36:25,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:25,438 INFO L481 AbstractCegarLoop]: Abstraction has 712 states and 957 transitions. [2020-10-26 20:36:25,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:36:25,439 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 957 transitions. [2020-10-26 20:36:25,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-26 20:36:25,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:25,443 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:36:25,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 20:36:25,443 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:25,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:25,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1665728127, now seen corresponding path program 1 times [2020-10-26 20:36:25,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:25,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700697508] [2020-10-26 20:36:25,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:25,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:25,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:26,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:26,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 20:36:26,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:36:26,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 963 [2020-10-26 20:36:26,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:26,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:36:26,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:36:26,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-26 20:36:26,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:26,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:26,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:26,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:26,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:26,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:26,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 20:36:26,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:26,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:26,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:26,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:36:26,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:26,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:26,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:26,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:26,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:36:26,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:26,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 20:36:26,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:26,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:26,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:26,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:36:26,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:26,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-26 20:36:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:26,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:26,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:26,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:36:26,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:26,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:36:26,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:26,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:26,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-26 20:36:26,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:26,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:26,761 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 20:36:26,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700697508] [2020-10-26 20:36:26,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:26,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:36:26,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901168279] [2020-10-26 20:36:26,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:36:26,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:26,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:36:26,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:36:26,764 INFO L87 Difference]: Start difference. First operand 712 states and 957 transitions. Second operand 7 states. [2020-10-26 20:36:28,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:28,481 INFO L93 Difference]: Finished difference Result 1744 states and 2471 transitions. [2020-10-26 20:36:28,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 20:36:28,482 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-26 20:36:28,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:28,495 INFO L225 Difference]: With dead ends: 1744 [2020-10-26 20:36:28,495 INFO L226 Difference]: Without dead ends: 1038 [2020-10-26 20:36:28,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:36:28,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-10-26 20:36:28,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1004. [2020-10-26 20:36:28,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1004 states. [2020-10-26 20:36:28,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1336 transitions. [2020-10-26 20:36:28,580 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1336 transitions. Word has length 116 [2020-10-26 20:36:28,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:28,580 INFO L481 AbstractCegarLoop]: Abstraction has 1004 states and 1336 transitions. [2020-10-26 20:36:28,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:36:28,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1336 transitions. [2020-10-26 20:36:28,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-26 20:36:28,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:28,586 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:36:28,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 20:36:28,587 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:28,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:28,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1163440666, now seen corresponding path program 1 times [2020-10-26 20:36:28,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:28,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231610698] [2020-10-26 20:36:28,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:28,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:28,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:30,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:31,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:32,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:32,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-26 20:36:32,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:36:32,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4125 [2020-10-26 20:36:32,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:36:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:36:32,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-26 20:36:32,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:32,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:32,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:32,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:32,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:32,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:32,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 20:36:32,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:32,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:32,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:32,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:36:32,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:32,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:32,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:33,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:33,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-26 20:36:33,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:33,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 20:36:33,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:33,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:33,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:33,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-26 20:36:33,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:33,258 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:36:33,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231610698] [2020-10-26 20:36:33,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:36:33,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 20:36:33,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004386354] [2020-10-26 20:36:33,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:36:33,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:33,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:36:33,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:36:33,261 INFO L87 Difference]: Start difference. First operand 1004 states and 1336 transitions. Second operand 7 states. [2020-10-26 20:36:33,411 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 20:36:34,407 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 20:36:35,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:35,196 INFO L93 Difference]: Finished difference Result 2586 states and 3435 transitions. [2020-10-26 20:36:35,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:36:35,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-26 20:36:35,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:35,206 INFO L225 Difference]: With dead ends: 2586 [2020-10-26 20:36:35,206 INFO L226 Difference]: Without dead ends: 1588 [2020-10-26 20:36:35,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:36:35,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2020-10-26 20:36:35,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1310. [2020-10-26 20:36:35,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1310 states. [2020-10-26 20:36:35,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1697 transitions. [2020-10-26 20:36:35,268 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1697 transitions. Word has length 119 [2020-10-26 20:36:35,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:35,268 INFO L481 AbstractCegarLoop]: Abstraction has 1310 states and 1697 transitions. [2020-10-26 20:36:35,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:36:35,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1697 transitions. [2020-10-26 20:36:35,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-26 20:36:35,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:35,273 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:36:35,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 20:36:35,274 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:35,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:35,274 INFO L82 PathProgramCache]: Analyzing trace with hash 482356540, now seen corresponding path program 1 times [2020-10-26 20:36:35,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:35,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124932438] [2020-10-26 20:36:35,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:35,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:35,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:36,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:36,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:38,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:38,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:38,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 20:36:38,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:36:38,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3650 [2020-10-26 20:36:38,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:38,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 20:36:38,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:36:38,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 20:36:38,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:39,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:39,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:39,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:39,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:39,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:39,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:36:39,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:39,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:39,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:39,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:36:39,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:39,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:39,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:39,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:39,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:39,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:36:39,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:36:39,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 20:36:39,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:39,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:36:39,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:39,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:36:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:39,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:39,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:39,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:39,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-26 20:36:39,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:36:39,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 20:36:39,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:39,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:39,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:39,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-26 20:36:39,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:39,362 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-26 20:36:39,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124932438] [2020-10-26 20:36:39,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:39,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:36:39,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027370043] [2020-10-26 20:36:39,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:36:39,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:39,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:36:39,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:36:39,365 INFO L87 Difference]: Start difference. First operand 1310 states and 1697 transitions. Second operand 8 states. [2020-10-26 20:36:41,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:41,628 INFO L93 Difference]: Finished difference Result 3462 states and 4748 transitions. [2020-10-26 20:36:41,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:36:41,631 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 127 [2020-10-26 20:36:41,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:41,648 INFO L225 Difference]: With dead ends: 3462 [2020-10-26 20:36:41,649 INFO L226 Difference]: Without dead ends: 2158 [2020-10-26 20:36:41,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:36:41,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2020-10-26 20:36:41,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 1864. [2020-10-26 20:36:41,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1864 states. [2020-10-26 20:36:41,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2534 transitions. [2020-10-26 20:36:41,748 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2534 transitions. Word has length 127 [2020-10-26 20:36:41,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:41,750 INFO L481 AbstractCegarLoop]: Abstraction has 1864 states and 2534 transitions. [2020-10-26 20:36:41,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:36:41,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2534 transitions. [2020-10-26 20:36:41,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-26 20:36:41,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:41,756 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:36:41,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 20:36:41,756 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:41,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:41,757 INFO L82 PathProgramCache]: Analyzing trace with hash -2092132405, now seen corresponding path program 1 times [2020-10-26 20:36:41,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:41,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337011750] [2020-10-26 20:36:41,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:41,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:41,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:42,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:42,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 20:36:42,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:36:42,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1135 [2020-10-26 20:36:42,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:42,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:42,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:36:42,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:36:42,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:43,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:43,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:43,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:43,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:43,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:43,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:36:43,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:43,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:43,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:43,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:43,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:43,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:43,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:36:43,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:43,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:36:43,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:43,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:43,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:43,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-26 20:36:43,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:43,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:36:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:43,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:43,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:43,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:36:43,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:43,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 20:36:43,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:43,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:43,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:43,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:36:43,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:43,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-26 20:36:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:43,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:43,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:43,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:36:43,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:43,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:36:43,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:43,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:43,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-26 20:36:43,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:43,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:43,282 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 44 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-26 20:36:43,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337011750] [2020-10-26 20:36:43,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:43,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:36:43,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120187043] [2020-10-26 20:36:43,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:36:43,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:43,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:36:43,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:36:43,285 INFO L87 Difference]: Start difference. First operand 1864 states and 2534 transitions. Second operand 7 states. [2020-10-26 20:36:44,685 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 20:36:45,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:45,053 INFO L93 Difference]: Finished difference Result 4139 states and 5582 transitions. [2020-10-26 20:36:45,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:36:45,054 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-26 20:36:45,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:45,068 INFO L225 Difference]: With dead ends: 4139 [2020-10-26 20:36:45,068 INFO L226 Difference]: Without dead ends: 2281 [2020-10-26 20:36:45,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:36:45,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2281 states. [2020-10-26 20:36:45,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2281 to 2144. [2020-10-26 20:36:45,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2144 states. [2020-10-26 20:36:45,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2144 states to 2144 states and 2876 transitions. [2020-10-26 20:36:45,154 INFO L78 Accepts]: Start accepts. Automaton has 2144 states and 2876 transitions. Word has length 130 [2020-10-26 20:36:45,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:45,155 INFO L481 AbstractCegarLoop]: Abstraction has 2144 states and 2876 transitions. [2020-10-26 20:36:45,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:36:45,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2144 states and 2876 transitions. [2020-10-26 20:36:45,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-26 20:36:45,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:45,161 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:36:45,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 20:36:45,162 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:45,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:45,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1086756359, now seen corresponding path program 1 times [2020-10-26 20:36:45,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:45,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781715867] [2020-10-26 20:36:45,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:45,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:45,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:46,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:46,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-26 20:36:46,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:36:46,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 896 [2020-10-26 20:36:46,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:36:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:36:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-26 20:36:46,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:46,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:46,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:46,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:46,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:46,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:46,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 20:36:46,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:46,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:46,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:46,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:36:46,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:46,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:46,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:46,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:46,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:46,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 20:36:46,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:36:46,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-26 20:36:46,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:46,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:46,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:46,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-26 20:36:46,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:46,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-26 20:36:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:46,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:46,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:46,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:36:46,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:46,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 20:36:46,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:46,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:46,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:46,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:36:46,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:46,676 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 20:36:46,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781715867] [2020-10-26 20:36:46,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:46,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:36:46,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990184417] [2020-10-26 20:36:46,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:36:46,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:46,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:36:46,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:36:46,680 INFO L87 Difference]: Start difference. First operand 2144 states and 2876 transitions. Second operand 8 states. [2020-10-26 20:36:48,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:48,542 INFO L93 Difference]: Finished difference Result 5106 states and 7067 transitions. [2020-10-26 20:36:48,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:36:48,543 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 144 [2020-10-26 20:36:48,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:48,560 INFO L225 Difference]: With dead ends: 5106 [2020-10-26 20:36:48,561 INFO L226 Difference]: Without dead ends: 2968 [2020-10-26 20:36:48,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:36:48,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-10-26 20:36:48,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 2692. [2020-10-26 20:36:48,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2692 states. [2020-10-26 20:36:48,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 3547 transitions. [2020-10-26 20:36:48,671 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 3547 transitions. Word has length 144 [2020-10-26 20:36:48,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:48,672 INFO L481 AbstractCegarLoop]: Abstraction has 2692 states and 3547 transitions. [2020-10-26 20:36:48,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:36:48,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 3547 transitions. [2020-10-26 20:36:48,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-26 20:36:48,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:48,679 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:36:48,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 20:36:48,679 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:48,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:48,680 INFO L82 PathProgramCache]: Analyzing trace with hash -251672206, now seen corresponding path program 1 times [2020-10-26 20:36:48,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:48,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706943570] [2020-10-26 20:36:48,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:48,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:48,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:49,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:49,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-26 20:36:49,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:36:49,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 787 [2020-10-26 20:36:49,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:49,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:36:49,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:36:49,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-26 20:36:49,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:49,705 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:36:49,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:49,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:49,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:49,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:49,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:49,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 20:36:49,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:49,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:49,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:49,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:49,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:36:49,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:49,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:49,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:49,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:36:49,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:49,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:36:49,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:49,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:49,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:49,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-26 20:36:49,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:36:49,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:36:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:49,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:49,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:49,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:49,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 20:36:49,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:36:49,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-26 20:36:49,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 20:36:49,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:49,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 20:36:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:50,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:50,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:50,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:36:50,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:50,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 20:36:50,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:50,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:50,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:50,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:36:50,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:50,154 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 86 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 20:36:50,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706943570] [2020-10-26 20:36:50,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:50,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 20:36:50,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959059922] [2020-10-26 20:36:50,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 20:36:50,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:50,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 20:36:50,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:36:50,160 INFO L87 Difference]: Start difference. First operand 2692 states and 3547 transitions. Second operand 9 states. [2020-10-26 20:36:52,077 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 20:36:53,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:53,025 INFO L93 Difference]: Finished difference Result 5954 states and 7853 transitions. [2020-10-26 20:36:53,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 20:36:53,026 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-10-26 20:36:53,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:53,045 INFO L225 Difference]: With dead ends: 5954 [2020-10-26 20:36:53,045 INFO L226 Difference]: Without dead ends: 3268 [2020-10-26 20:36:53,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-26 20:36:53,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2020-10-26 20:36:53,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 2831. [2020-10-26 20:36:53,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2831 states. [2020-10-26 20:36:53,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2831 states to 2831 states and 3567 transitions. [2020-10-26 20:36:53,159 INFO L78 Accepts]: Start accepts. Automaton has 2831 states and 3567 transitions. Word has length 161 [2020-10-26 20:36:53,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:53,159 INFO L481 AbstractCegarLoop]: Abstraction has 2831 states and 3567 transitions. [2020-10-26 20:36:53,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 20:36:53,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2831 states and 3567 transitions. [2020-10-26 20:36:53,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-26 20:36:53,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:53,169 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 20:36:53,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 20:36:53,169 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:53,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:53,170 INFO L82 PathProgramCache]: Analyzing trace with hash 252310424, now seen corresponding path program 1 times [2020-10-26 20:36:53,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:53,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668625493] [2020-10-26 20:36:53,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:53,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:53,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:53,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-26 20:36:53,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:53,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-26 20:36:53,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:53,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:53,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-26 20:36:53,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:36:53,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:53,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:36:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:53,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:53,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:53,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:36:53,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:53,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:36:53,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:53,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:53,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:53,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:53,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:53,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:36:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:53,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:53,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:53,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:36:53,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:53,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:36:53,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:53,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:53,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:53,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:53,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:53,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:36:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:53,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:53,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:53,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 20:36:53,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:53,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 20:36:53,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:53,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:36:53,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:53,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:36:53,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:53,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 20:36:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:53,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:53,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:53,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-26 20:36:53,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:53,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 20:36:53,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:53,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:36:53,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:36:53,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-26 20:36:53,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:53,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 20:36:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:53,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:54,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:36:54,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:36:54,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:36:54,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 20:36:54,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:36:54,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:36:54,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:36:54,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:36:54,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:36:54,194 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-26 20:36:54,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668625493] [2020-10-26 20:36:54,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:36:54,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:36:54,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513740849] [2020-10-26 20:36:54,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:36:54,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:36:54,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:36:54,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:36:54,199 INFO L87 Difference]: Start difference. First operand 2831 states and 3567 transitions. Second operand 8 states. [2020-10-26 20:36:54,992 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-26 20:36:55,153 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 20:36:57,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:36:57,376 INFO L93 Difference]: Finished difference Result 5656 states and 7136 transitions. [2020-10-26 20:36:57,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:36:57,380 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 219 [2020-10-26 20:36:57,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:36:57,394 INFO L225 Difference]: With dead ends: 5656 [2020-10-26 20:36:57,394 INFO L226 Difference]: Without dead ends: 2831 [2020-10-26 20:36:57,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-26 20:36:57,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2020-10-26 20:36:57,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 2690. [2020-10-26 20:36:57,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2690 states. [2020-10-26 20:36:57,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 3172 transitions. [2020-10-26 20:36:57,501 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 3172 transitions. Word has length 219 [2020-10-26 20:36:57,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:36:57,501 INFO L481 AbstractCegarLoop]: Abstraction has 2690 states and 3172 transitions. [2020-10-26 20:36:57,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:36:57,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 3172 transitions. [2020-10-26 20:36:57,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-26 20:36:57,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:36:57,511 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:36:57,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 20:36:57,511 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:36:57,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:36:57,512 INFO L82 PathProgramCache]: Analyzing trace with hash -263471333, now seen corresponding path program 1 times [2020-10-26 20:36:57,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:36:57,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216963381] [2020-10-26 20:36:57,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:36:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:36:57,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:57,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:57,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:36:58,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:00,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:00,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 20:37:00,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:37:00,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3346 [2020-10-26 20:37:00,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:00,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 20:37:00,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:37:00,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-26 20:37:00,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:01,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:37:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:01,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:01,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:01,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:37:01,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:01,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 20:37:01,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:01,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:37:01,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:37:01,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:37:01,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:01,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:37:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:01,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:01,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:01,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:37:01,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:01,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:37:01,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:37:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:37:01,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:01,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:37:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:01,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:01,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:01,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 20:37:01,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:01,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 20:37:01,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:37:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 20:37:01,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:01,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 20:37:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:01,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:01,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:01,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-26 20:37:01,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:01,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 20:37:01,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:01,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:01,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:37:01,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-26 20:37:01,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:01,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 20:37:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:01,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:01,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:01,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:37:01,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:01,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 20:37:01,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:01,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:37:01,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:37:01,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 20:37:01,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:01,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-26 20:37:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:37:01,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:37:01,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:37:01,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:37:01,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:37:01,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:37:01,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:37:01,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:37:01,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-26 20:37:01,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:37:01,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:37:01,687 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 189 proven. 43 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-26 20:37:01,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216963381] [2020-10-26 20:37:01,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:37:01,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 20:37:01,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393035703] [2020-10-26 20:37:01,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 20:37:01,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:37:01,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 20:37:01,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:37:01,690 INFO L87 Difference]: Start difference. First operand 2690 states and 3172 transitions. Second operand 9 states. [2020-10-26 20:37:03,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:37:03,366 INFO L93 Difference]: Finished difference Result 7099 states and 8445 transitions. [2020-10-26 20:37:03,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:37:03,367 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 228 [2020-10-26 20:37:03,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:37:03,389 INFO L225 Difference]: With dead ends: 7099 [2020-10-26 20:37:03,390 INFO L226 Difference]: Without dead ends: 4415 [2020-10-26 20:37:03,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-26 20:37:03,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4415 states. [2020-10-26 20:37:03,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4415 to 4223. [2020-10-26 20:37:03,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4223 states. [2020-10-26 20:37:03,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4223 states to 4223 states and 4940 transitions. [2020-10-26 20:37:03,566 INFO L78 Accepts]: Start accepts. Automaton has 4223 states and 4940 transitions. Word has length 228 [2020-10-26 20:37:03,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:37:03,567 INFO L481 AbstractCegarLoop]: Abstraction has 4223 states and 4940 transitions. [2020-10-26 20:37:03,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 20:37:03,567 INFO L276 IsEmpty]: Start isEmpty. Operand 4223 states and 4940 transitions. [2020-10-26 20:37:03,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-26 20:37:03,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:37:03,580 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 20:37:03,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 20:37:03,581 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:37:03,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:37:03,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1708979641, now seen corresponding path program 1 times [2020-10-26 20:37:03,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:37:03,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811413969] [2020-10-26 20:37:03,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:37:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 20:37:03,648 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-26 20:37:03,648 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 20:37:03,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 20:37:03,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:37:03 BoogieIcfgContainer [2020-10-26 20:37:03,727 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 20:37:03,731 INFO L168 Benchmark]: Toolchain (without parser) took 51798.93 ms. Allocated memory was 164.6 MB in the beginning and 715.1 MB in the end (delta: 550.5 MB). Free memory was 138.1 MB in the beginning and 624.1 MB in the end (delta: -486.0 MB). Peak memory consumption was 65.2 MB. Max. memory is 8.0 GB. [2020-10-26 20:37:03,734 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory was 100.0 MB in the beginning and 100.0 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 20:37:03,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.27 ms. Allocated memory is still 164.6 MB. Free memory was 137.4 MB in the beginning and 141.6 MB in the end (delta: -4.1 MB). Peak memory consumption was 26.5 MB. Max. memory is 8.0 GB. [2020-10-26 20:37:03,735 INFO L168 Benchmark]: Boogie Preprocessor took 128.69 ms. Allocated memory is still 164.6 MB. Free memory was 141.6 MB in the beginning and 136.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-26 20:37:03,738 INFO L168 Benchmark]: RCFGBuilder took 1725.89 ms. Allocated memory is still 164.6 MB. Free memory was 136.6 MB in the beginning and 126.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 49.1 MB. Max. memory is 8.0 GB. [2020-10-26 20:37:03,739 INFO L168 Benchmark]: TraceAbstraction took 49252.85 ms. Allocated memory was 164.6 MB in the beginning and 715.1 MB in the end (delta: 550.5 MB). Free memory was 126.1 MB in the beginning and 624.1 MB in the end (delta: -498.0 MB). Peak memory consumption was 52.5 MB. Max. memory is 8.0 GB. [2020-10-26 20:37:03,741 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory was 100.0 MB in the beginning and 100.0 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 677.27 ms. Allocated memory is still 164.6 MB. Free memory was 137.4 MB in the beginning and 141.6 MB in the end (delta: -4.1 MB). Peak memory consumption was 26.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 128.69 ms. Allocated memory is still 164.6 MB. Free memory was 141.6 MB in the beginning and 136.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1725.89 ms. Allocated memory is still 164.6 MB. Free memory was 136.6 MB in the beginning and 126.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 49.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 49252.85 ms. Allocated memory was 164.6 MB in the beginning and 715.1 MB in the end (delta: 550.5 MB). Free memory was 126.1 MB in the beginning and 624.1 MB in the end (delta: -498.0 MB). Peak memory consumption was 52.5 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 TRUE ((((((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)) [L87] a7 = 0 [L88] a20 = 1 [L89] a8 = 14 [L90] a16 = 4 [L91] a21 = 1 [L92] a17 = 0 [L93] 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 TRUE ((((((!(a17==1)&&!(a7==1))&&(a20==1))&&(a8==14))&&(a12==8))&&(a16==4))&&(a21==1)) [L415] CALL reach_error() [L4] __assert_fail("0", "Problem01_label50.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 211 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 49.1s, OverallIterations: 12, TraceHistogramMax: 6, AutomataDifference: 23.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 294 SDtfs, 5401 SDslu, 424 SDs, 0 SdLazy, 9085 SolverSat, 1650 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 192 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4223occurred in iteration=11, 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, 11 MinimizatonAttempts, 1968 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 23.3s InterpolantComputationTime, 1759 NumberOfCodeBlocks, 1759 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1518 ConstructedInterpolants, 0 QuantifiedInterpolants, 1161752 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 775/866 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...