/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:38:37,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:38:37,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:38:37,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 01:38:37,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 01:38:37,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 01:38:37,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 01:38:37,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 01:38:37,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 01:38:37,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 01:38:37,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 01:38:37,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 01:38:37,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:38:37,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:38:37,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:38:37,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:38:37,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:38:37,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:38:37,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:38:37,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:38:37,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:38:37,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:38:37,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:38:37,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:38:37,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 01:38:37,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 01:38:37,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 01:38:37,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 01:38:37,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 01:38:37,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 01:38:37,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 01:38:37,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 01:38:37,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 01:38:37,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 01:38:37,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 01:38:37,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 01:38:37,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 01:38:37,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 01:38:37,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:38:37,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:38:37,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:38:37,867 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 01:38:37,879 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:38:37,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:38:37,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:38:37,881 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:38:37,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:38:37,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:38:37,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:38:37,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:38:37,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:38:37,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:38:37,883 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:38:37,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:38:37,883 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:38:37,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:38:37,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:38:37,884 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:38:37,884 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:38:37,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:38:37,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:38:37,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:38:37,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:38:37,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:38:37,886 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:38:38,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:38:38,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:38:38,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:38:38,271 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:38:38,272 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:38:38,276 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label46.c [2020-11-07 01:38:38,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44be55956/9b143cb742f549f28b64aa48cece9521/FLAGba26aa02a [2020-11-07 01:38:39,213 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:38:39,213 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label46.c [2020-11-07 01:38:39,225 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44be55956/9b143cb742f549f28b64aa48cece9521/FLAGba26aa02a [2020-11-07 01:38:39,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44be55956/9b143cb742f549f28b64aa48cece9521 [2020-11-07 01:38:39,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:38:39,453 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:38:39,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:38:39,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:38:39,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:38:39,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:38:39" (1/1) ... [2020-11-07 01:38:39,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36988f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:39, skipping insertion in model container [2020-11-07 01:38:39,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:38:39" (1/1) ... [2020-11-07 01:38:39,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:38:39,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:38:39,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:38:39,935 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:38:40,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:38:40,167 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:38:40,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:40 WrapperNode [2020-11-07 01:38:40,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:38:40,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:38:40,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:38:40,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:38:40,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:40" (1/1) ... [2020-11-07 01:38:40,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:40" (1/1) ... [2020-11-07 01:38:40,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:40" (1/1) ... [2020-11-07 01:38:40,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:40" (1/1) ... [2020-11-07 01:38:40,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:40" (1/1) ... [2020-11-07 01:38:40,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:40" (1/1) ... [2020-11-07 01:38:40,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:40" (1/1) ... [2020-11-07 01:38:40,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:38:40,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:38:40,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:38:40,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:38:40,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-11-07 01:38:40,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:38:40,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:38:40,367 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:38:40,367 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-11-07 01:38:40,367 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:38:40,367 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-11-07 01:38:40,367 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:38:40,368 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:38:40,368 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:38:40,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:38:40,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 01:38:40,368 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 01:38:40,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:38:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:38:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:38:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:38:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:38:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:38:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:38:41,689 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:38:41,689 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 01:38:41,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:38:41 BoogieIcfgContainer [2020-11-07 01:38:41,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:38:41,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:38:41,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:38:41,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:38:41,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:38:39" (1/3) ... [2020-11-07 01:38:41,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a544edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:38:41, skipping insertion in model container [2020-11-07 01:38:41,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:38:40" (2/3) ... [2020-11-07 01:38:41,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a544edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:38:41, skipping insertion in model container [2020-11-07 01:38:41,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:38:41" (3/3) ... [2020-11-07 01:38:41,701 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label46.c [2020-11-07 01:38:41,718 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:38:41,722 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:38:41,735 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:38:41,761 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:38:41,761 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:38:41,761 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:38:41,762 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:38:41,762 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:38:41,762 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:38:41,762 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:38:41,762 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:38:41,790 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states. [2020-11-07 01:38:41,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-11-07 01:38:41,815 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:38:41,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:38:41,817 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:38:41,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:38:41,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1766183317, now seen corresponding path program 1 times [2020-11-07 01:38:41,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:38:41,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248561281] [2020-11-07 01:38:41,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:38:41,919 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:38:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:38:42,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:38:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:38:42,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:38:42,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248561281] [2020-11-07 01:38:42,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:38:42,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 01:38:42,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109925425] [2020-11-07 01:38:42,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 01:38:42,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:38:42,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 01:38:42,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 01:38:42,715 INFO L87 Difference]: Start difference. First operand 539 states. Second operand 5 states. [2020-11-07 01:38:46,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:38:46,897 INFO L93 Difference]: Finished difference Result 1432 states and 2028 transitions. [2020-11-07 01:38:46,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 01:38:46,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-11-07 01:38:46,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:38:46,924 INFO L225 Difference]: With dead ends: 1432 [2020-11-07 01:38:46,925 INFO L226 Difference]: Without dead ends: 845 [2020-11-07 01:38:46,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-07 01:38:46,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2020-11-07 01:38:47,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 781. [2020-11-07 01:38:47,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 781 states. [2020-11-07 01:38:47,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 952 transitions. [2020-11-07 01:38:47,200 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 952 transitions. Word has length 147 [2020-11-07 01:38:47,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:38:47,202 INFO L481 AbstractCegarLoop]: Abstraction has 781 states and 952 transitions. [2020-11-07 01:38:47,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 01:38:47,202 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 952 transitions. [2020-11-07 01:38:47,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-11-07 01:38:47,210 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:38:47,210 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:38:47,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:38:47,211 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:38:47,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:38:47,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1456296976, now seen corresponding path program 1 times [2020-11-07 01:38:47,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:38:47,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723925657] [2020-11-07 01:38:47,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:38:47,327 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 37 [2020-11-07 01:38:48,004 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:38:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:38:48,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:38:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:38:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:38:49,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723925657] [2020-11-07 01:38:49,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:38:49,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-11-07 01:38:49,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020408196] [2020-11-07 01:38:49,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-07 01:38:49,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:38:49,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-07 01:38:49,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-11-07 01:38:49,060 INFO L87 Difference]: Start difference. First operand 781 states and 952 transitions. Second operand 18 states. [2020-11-07 01:38:49,451 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 01:38:49,695 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 01:38:49,925 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-11-07 01:38:50,225 WARN L194 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 118 [2020-11-07 01:38:50,497 WARN L194 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2020-11-07 01:38:52,087 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 01:38:52,258 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-11-07 01:38:52,549 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-11-07 01:38:53,202 WARN L194 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 118 [2020-11-07 01:38:54,408 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-11-07 01:38:55,059 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 01:38:57,032 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2020-11-07 01:39:01,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:39:01,056 INFO L93 Difference]: Finished difference Result 2881 states and 4032 transitions. [2020-11-07 01:39:01,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-11-07 01:39:01,057 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 164 [2020-11-07 01:39:01,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:39:01,096 INFO L225 Difference]: With dead ends: 2881 [2020-11-07 01:39:01,097 INFO L226 Difference]: Without dead ends: 2130 [2020-11-07 01:39:01,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3272 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1367, Invalid=7375, Unknown=0, NotChecked=0, Total=8742 [2020-11-07 01:39:01,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2130 states. [2020-11-07 01:39:01,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2130 to 1812. [2020-11-07 01:39:01,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1812 states. [2020-11-07 01:39:01,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 2292 transitions. [2020-11-07 01:39:01,686 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 2292 transitions. Word has length 164 [2020-11-07 01:39:01,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:39:01,687 INFO L481 AbstractCegarLoop]: Abstraction has 1812 states and 2292 transitions. [2020-11-07 01:39:01,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-07 01:39:01,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 2292 transitions. [2020-11-07 01:39:01,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-11-07 01:39:01,695 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:39:01,696 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:39:01,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:39:01,697 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:39:01,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:39:01,697 INFO L82 PathProgramCache]: Analyzing trace with hash -281896290, now seen corresponding path program 1 times [2020-11-07 01:39:01,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:39:01,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653316619] [2020-11-07 01:39:01,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:39:01,945 WARN L194 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 46 [2020-11-07 01:39:02,860 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:39:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:39:03,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:39:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:39:03,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:39:04,147 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-11-07 01:39:04,327 WARN L194 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-11-07 01:39:04,692 WARN L194 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-11-07 01:39:05,107 WARN L194 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-11-07 01:39:05,349 WARN L194 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-11-07 01:39:05,624 WARN L194 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-07 01:39:05,937 WARN L194 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-11-07 01:39:06,520 WARN L194 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-11-07 01:39:06,867 WARN L194 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-07 01:39:07,247 WARN L194 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-11-07 01:39:07,647 WARN L194 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-11-07 01:39:08,415 WARN L194 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-11-07 01:39:09,200 WARN L194 SmtUtils]: Spent 680.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 78 [2020-11-07 01:39:10,035 WARN L194 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 79 [2020-11-07 01:39:10,986 WARN L194 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-11-07 01:39:11,505 WARN L194 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-11-07 01:39:12,419 WARN L194 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2020-11-07 01:39:12,976 WARN L194 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-11-07 01:39:13,545 WARN L194 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-07 01:39:13,862 WARN L194 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 26 [2020-11-07 01:39:15,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653316619] [2020-11-07 01:39:15,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:39:15,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2020-11-07 01:39:15,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079949213] [2020-11-07 01:39:15,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-11-07 01:39:15,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:39:15,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-11-07 01:39:15,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=650, Invalid=1606, Unknown=0, NotChecked=0, Total=2256 [2020-11-07 01:39:15,005 INFO L87 Difference]: Start difference. First operand 1812 states and 2292 transitions. Second operand 45 states. [2020-11-07 01:39:15,213 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 01:39:15,353 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 01:39:15,481 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 01:39:15,602 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 01:39:15,739 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 01:39:15,872 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 01:39:16,137 WARN L194 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 101 [2020-11-07 01:39:16,482 WARN L194 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 112 [2020-11-07 01:39:16,688 WARN L194 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-11-07 01:39:17,151 WARN L194 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 115 [2020-11-07 01:39:17,787 WARN L194 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2020-11-07 01:39:18,488 WARN L194 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 120 [2020-11-07 01:39:18,842 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 01:39:19,680 WARN L194 SmtUtils]: Spent 776.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 121 [2020-11-07 01:39:19,812 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-11-07 01:39:20,128 WARN L194 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 111 [2020-11-07 01:39:20,271 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-11-07 01:39:20,646 WARN L194 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 117 [2020-11-07 01:39:20,796 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-11-07 01:39:21,214 WARN L194 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 126 [2020-11-07 01:39:21,636 WARN L194 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 129 [2020-11-07 01:39:22,097 WARN L194 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 127 [2020-11-07 01:39:22,240 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 01:39:22,728 WARN L194 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 133 [2020-11-07 01:39:22,873 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 01:39:23,417 WARN L194 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 134 [2020-11-07 01:39:23,597 WARN L194 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-11-07 01:39:24,122 WARN L194 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 116 [2020-11-07 01:39:24,663 WARN L194 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 134 [2020-11-07 01:39:24,909 WARN L194 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-11-07 01:39:25,848 WARN L194 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 135 [2020-11-07 01:39:26,096 WARN L194 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-11-07 01:39:26,281 WARN L194 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 41 [2020-11-07 01:39:27,127 WARN L194 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 134 [2020-11-07 01:39:28,091 WARN L194 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 141 [2020-11-07 01:39:28,597 WARN L194 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 133 [2020-11-07 01:39:29,680 WARN L194 SmtUtils]: Spent 986.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 142 [2020-11-07 01:39:30,619 WARN L194 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 140 [2020-11-07 01:39:31,583 WARN L194 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-11-07 01:39:32,129 WARN L194 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 136 [2020-11-07 01:39:32,673 WARN L194 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 121 [2020-11-07 01:39:33,481 WARN L194 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 145 [2020-11-07 01:39:34,087 WARN L194 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 139 [2020-11-07 01:39:34,575 WARN L194 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-11-07 01:39:35,386 WARN L194 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 140 [2020-11-07 01:39:36,234 WARN L194 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 144 [2020-11-07 01:39:37,089 WARN L194 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 146 [2020-11-07 01:39:37,817 WARN L194 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 141 [2020-11-07 01:39:38,629 WARN L194 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 142 [2020-11-07 01:39:39,585 WARN L194 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 147 [2020-11-07 01:39:40,545 WARN L194 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 146 [2020-11-07 01:39:41,506 WARN L194 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 148 [2020-11-07 01:39:42,325 WARN L194 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 143 [2020-11-07 01:39:43,288 WARN L194 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 147 [2020-11-07 01:39:44,036 WARN L194 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 125 [2020-11-07 01:39:45,010 WARN L194 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 148 [2020-11-07 01:39:45,945 WARN L194 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 148 [2020-11-07 01:39:46,115 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-11-07 01:39:46,510 WARN L194 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2020-11-07 01:39:47,540 WARN L194 SmtUtils]: Spent 941.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 149 [2020-11-07 01:39:48,514 WARN L194 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 147 [2020-11-07 01:39:49,490 WARN L194 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 149 [2020-11-07 01:39:50,613 WARN L194 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 148 [2020-11-07 01:39:51,681 WARN L194 SmtUtils]: Spent 967.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 153 [2020-11-07 01:39:51,842 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 01:39:52,847 WARN L194 SmtUtils]: Spent 921.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 150 [2020-11-07 01:39:54,038 WARN L194 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 159 DAG size of output: 154 [2020-11-07 01:39:54,200 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 01:39:55,275 WARN L194 SmtUtils]: Spent 974.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 151 [2020-11-07 01:39:55,417 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-11-07 01:39:55,617 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2020-11-07 01:39:56,738 WARN L194 SmtUtils]: Spent 996.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 153 [2020-11-07 01:39:57,896 WARN L194 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 162 DAG size of output: 157 [2020-11-07 01:39:58,080 WARN L194 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-11-07 01:39:58,386 WARN L194 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 100 [2020-11-07 01:39:59,192 WARN L194 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2020-11-07 01:39:59,545 WARN L194 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 99 [2020-11-07 01:39:59,755 WARN L194 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-11-07 01:40:00,886 WARN L194 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 155 DAG size of output: 152 [2020-11-07 01:40:01,939 WARN L194 SmtUtils]: Spent 835.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 125 [2020-11-07 01:40:02,280 WARN L194 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-11-07 01:40:03,485 WARN L194 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 156 DAG size of output: 153 [2020-11-07 01:40:03,674 WARN L194 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-11-07 01:40:04,034 WARN L194 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 113 [2020-11-07 01:40:04,487 WARN L194 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-11-07 01:40:05,687 WARN L194 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 156 DAG size of output: 153 [2020-11-07 01:40:06,104 WARN L194 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-11-07 01:40:07,330 WARN L194 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 157 DAG size of output: 154 [2020-11-07 01:40:07,472 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 01:40:08,692 WARN L194 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 162 DAG size of output: 156 [2020-11-07 01:40:09,090 WARN L194 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-11-07 01:40:10,511 WARN L194 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 160 DAG size of output: 157 [2020-11-07 01:40:10,956 WARN L194 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-11-07 01:40:11,203 WARN L194 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-11-07 01:40:11,542 WARN L194 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 114 [2020-11-07 01:40:11,959 WARN L194 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-11-07 01:40:12,433 WARN L194 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 116 [2020-11-07 01:40:12,807 WARN L194 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 120 [2020-11-07 01:40:13,334 WARN L194 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-11-07 01:40:13,718 WARN L194 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-11-07 01:40:14,167 WARN L194 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-11-07 01:40:14,726 WARN L194 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 130 [2020-11-07 01:40:15,320 WARN L194 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-11-07 01:40:16,013 WARN L194 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-11-07 01:40:16,629 WARN L194 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 133 [2020-11-07 01:40:17,227 WARN L194 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-11-07 01:40:17,904 WARN L194 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 130 [2020-11-07 01:40:18,465 WARN L194 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 133 [2020-11-07 01:40:19,041 WARN L194 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-11-07 01:40:19,292 WARN L194 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-11-07 01:40:19,900 WARN L194 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-11-07 01:40:20,627 WARN L194 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-11-07 01:40:21,761 WARN L194 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 146 DAG size of output: 141 [2020-11-07 01:40:22,444 WARN L194 SmtUtils]: Spent 537.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-11-07 01:40:23,191 WARN L194 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-11-07 01:40:24,027 WARN L194 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-11-07 01:40:24,842 WARN L194 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-11-07 01:40:25,813 WARN L194 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 145 [2020-11-07 01:40:26,596 WARN L194 SmtUtils]: Spent 623.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-11-07 01:40:27,434 WARN L194 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-11-07 01:40:28,279 WARN L194 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-11-07 01:40:29,304 WARN L194 SmtUtils]: Spent 883.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 147 [2020-11-07 01:40:30,849 WARN L194 SmtUtils]: Spent 966.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 152 [2020-11-07 01:40:31,811 WARN L194 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-11-07 01:40:33,565 WARN L194 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2020-11-07 01:40:35,498 WARN L194 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2020-11-07 01:40:39,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:40:39,918 INFO L93 Difference]: Finished difference Result 5769 states and 7472 transitions. [2020-11-07 01:40:39,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2020-11-07 01:40:39,919 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 189 [2020-11-07 01:40:39,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:40:39,949 INFO L225 Difference]: With dead ends: 5769 [2020-11-07 01:40:39,949 INFO L226 Difference]: Without dead ends: 3971 [2020-11-07 01:40:39,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16503 ImplicationChecksByTransitivity, 83.7s TimeCoverageRelationStatistics Valid=7281, Invalid=34949, Unknown=0, NotChecked=0, Total=42230 [2020-11-07 01:40:39,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3971 states. [2020-11-07 01:40:41,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3971 to 3478. [2020-11-07 01:40:41,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3478 states. [2020-11-07 01:40:41,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 4441 transitions. [2020-11-07 01:40:41,362 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 4441 transitions. Word has length 189 [2020-11-07 01:40:41,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:40:41,362 INFO L481 AbstractCegarLoop]: Abstraction has 3478 states and 4441 transitions. [2020-11-07 01:40:41,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-11-07 01:40:41,362 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 4441 transitions. [2020-11-07 01:40:41,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-11-07 01:40:41,378 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:40:41,378 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:40:41,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 01:40:41,379 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:40:41,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:40:41,380 INFO L82 PathProgramCache]: Analyzing trace with hash -433506128, now seen corresponding path program 1 times [2020-11-07 01:40:41,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:40:41,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291374431] [2020-11-07 01:40:41,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:40:41,799 WARN L194 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 48 [2020-11-07 01:40:43,414 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:40:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:40:44,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:40:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:40:44,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:40:45,666 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2020-11-07 01:40:46,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291374431] [2020-11-07 01:40:46,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:40:46,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-11-07 01:40:46,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310926701] [2020-11-07 01:40:46,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-07 01:40:46,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:40:46,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-07 01:40:46,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=601, Unknown=0, NotChecked=0, Total=812 [2020-11-07 01:40:46,069 INFO L87 Difference]: Start difference. First operand 3478 states and 4441 transitions. Second operand 25 states. [2020-11-07 01:40:46,427 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 01:40:46,562 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 01:40:46,692 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 01:40:46,833 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-11-07 01:40:46,973 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-11-07 01:40:47,123 WARN L194 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-11-07 01:40:47,278 WARN L194 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-11-07 01:40:47,741 WARN L194 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-11-07 01:40:47,928 WARN L194 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-11-07 01:40:48,305 WARN L194 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-11-07 01:40:51,210 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-11-07 01:40:57,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:40:57,278 INFO L93 Difference]: Finished difference Result 8363 states and 10911 transitions. [2020-11-07 01:40:57,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-07 01:40:57,279 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 199 [2020-11-07 01:40:57,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:40:57,319 INFO L225 Difference]: With dead ends: 8363 [2020-11-07 01:40:57,320 INFO L226 Difference]: Without dead ends: 5065 [2020-11-07 01:40:57,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 32 SyntacticMatches, 19 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1256 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=473, Invalid=1879, Unknown=0, NotChecked=0, Total=2352 [2020-11-07 01:40:57,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5065 states. [2020-11-07 01:40:58,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5065 to 4157. [2020-11-07 01:40:58,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4157 states. [2020-11-07 01:40:58,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4157 states to 4157 states and 5219 transitions. [2020-11-07 01:40:58,925 INFO L78 Accepts]: Start accepts. Automaton has 4157 states and 5219 transitions. Word has length 199 [2020-11-07 01:40:58,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:40:58,926 INFO L481 AbstractCegarLoop]: Abstraction has 4157 states and 5219 transitions. [2020-11-07 01:40:58,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-11-07 01:40:58,926 INFO L276 IsEmpty]: Start isEmpty. Operand 4157 states and 5219 transitions. [2020-11-07 01:40:58,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-11-07 01:40:58,944 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:40:58,944 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:40:58,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 01:40:58,945 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:40:58,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:40:58,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1413213706, now seen corresponding path program 1 times [2020-11-07 01:40:58,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:40:58,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690837633] [2020-11-07 01:40:58,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:40:59,074 WARN L194 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 38 [2020-11-07 01:40:59,351 WARN L194 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 45 [2020-11-07 01:40:59,938 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:40:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:41:00,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:41:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:41:00,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:41:00,856 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-11-07 01:41:01,002 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-11-07 01:41:01,170 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-11-07 01:41:01,982 WARN L194 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-11-07 01:41:02,714 WARN L194 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-11-07 01:41:03,379 WARN L194 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-11-07 01:41:04,138 WARN L194 SmtUtils]: Spent 647.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-11-07 01:41:04,799 WARN L194 SmtUtils]: Spent 606.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-11-07 01:41:06,264 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2020-11-07 01:41:08,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690837633] [2020-11-07 01:41:08,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:41:08,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2020-11-07 01:41:08,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063531501] [2020-11-07 01:41:08,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-11-07 01:41:08,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:41:08,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-11-07 01:41:08,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=1564, Unknown=2, NotChecked=0, Total=1980 [2020-11-07 01:41:08,385 INFO L87 Difference]: Start difference. First operand 4157 states and 5219 transitions. Second operand 41 states. [2020-11-07 01:41:08,806 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 01:41:08,939 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 01:41:09,068 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 01:41:09,211 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 01:41:09,354 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 01:41:09,505 WARN L194 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 01:41:09,843 WARN L194 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 111 [2020-11-07 01:41:10,236 WARN L194 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 117 [2020-11-07 01:41:10,429 WARN L194 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-11-07 01:41:10,878 WARN L194 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 121 [2020-11-07 01:41:11,373 WARN L194 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 127 [2020-11-07 01:41:11,744 WARN L194 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-11-07 01:41:12,690 WARN L194 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-11-07 01:41:13,321 WARN L194 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-11-07 01:41:13,551 WARN L194 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-11-07 01:41:14,466 WARN L194 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-11-07 01:41:14,660 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-11-07 01:41:15,084 WARN L194 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2020-11-07 01:41:15,347 WARN L194 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2020-11-07 01:41:15,605 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-11-07 01:41:15,961 WARN L194 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-11-07 01:41:16,249 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 01:41:16,487 WARN L194 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-11-07 01:41:16,763 WARN L194 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-11-07 01:41:17,174 WARN L194 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-11-07 01:41:17,472 WARN L194 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-11-07 01:41:17,864 WARN L194 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-11-07 01:41:18,142 WARN L194 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-11-07 01:41:18,516 WARN L194 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-11-07 01:41:18,819 WARN L194 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2020-11-07 01:41:19,535 WARN L194 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 137 [2020-11-07 01:41:19,827 WARN L194 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-11-07 01:41:20,143 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 01:41:20,485 WARN L194 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-11-07 01:41:20,903 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-11-07 01:41:21,414 WARN L194 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 116 [2020-11-07 01:41:22,009 WARN L194 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 122 [2020-11-07 01:41:22,195 WARN L194 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-11-07 01:41:22,420 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 01:41:22,694 WARN L194 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-11-07 01:41:23,139 WARN L194 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 130 [2020-11-07 01:41:23,371 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 01:41:23,919 WARN L194 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 131 [2020-11-07 01:41:24,187 WARN L194 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-11-07 01:41:24,845 WARN L194 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 134 [2020-11-07 01:41:25,156 WARN L194 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-11-07 01:41:25,392 WARN L194 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-11-07 01:41:25,845 WARN L194 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2020-11-07 01:41:26,230 WARN L194 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-11-07 01:41:26,506 WARN L194 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-11-07 01:41:26,824 WARN L194 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-11-07 01:41:27,373 WARN L194 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-11-07 01:41:27,694 WARN L194 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2020-11-07 01:41:27,887 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-11-07 01:41:28,062 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 01:41:28,419 WARN L194 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-11-07 01:41:28,681 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-11-07 01:41:29,269 WARN L194 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 111 [2020-11-07 01:41:29,679 WARN L194 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-11-07 01:41:30,062 WARN L194 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 117 [2020-11-07 01:41:30,394 WARN L194 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-11-07 01:41:30,912 WARN L194 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 126 [2020-11-07 01:41:31,130 WARN L194 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 01:41:31,394 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-11-07 01:41:31,975 WARN L194 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 127 [2020-11-07 01:41:32,481 WARN L194 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-11-07 01:41:33,021 WARN L194 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 133 [2020-11-07 01:41:33,746 WARN L194 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-11-07 01:41:34,162 WARN L194 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-11-07 01:41:34,582 WARN L194 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-11-07 01:41:34,855 WARN L194 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-11-07 01:41:35,130 WARN L194 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-11-07 01:41:35,447 WARN L194 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-07 01:41:35,768 WARN L194 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-11-07 01:41:36,268 WARN L194 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2020-11-07 01:41:36,445 WARN L194 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-11-07 01:41:36,790 WARN L194 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-11-07 01:41:37,361 WARN L194 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-11-07 01:41:42,016 WARN L194 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-11-07 01:41:42,823 WARN L194 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-11-07 01:41:45,333 WARN L194 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-11-07 01:41:46,627 WARN L194 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-11-07 01:41:46,974 WARN L194 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2020-11-07 01:41:47,291 WARN L194 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-11-07 01:41:53,056 WARN L194 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-11-07 01:41:53,205 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-11-07 01:41:53,354 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-11-07 01:41:53,525 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-11-07 01:41:56,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:41:56,016 INFO L93 Difference]: Finished difference Result 11727 states and 16747 transitions. [2020-11-07 01:41:56,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2020-11-07 01:41:56,018 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 203 [2020-11-07 01:41:56,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:41:56,094 INFO L225 Difference]: With dead ends: 11727 [2020-11-07 01:41:56,095 INFO L226 Difference]: Without dead ends: 7750 [2020-11-07 01:41:56,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 43 SyntacticMatches, 15 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15845 ImplicationChecksByTransitivity, 34.3s TimeCoverageRelationStatistics Valid=4367, Invalid=32687, Unknown=2, NotChecked=0, Total=37056 [2020-11-07 01:41:56,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7750 states. [2020-11-07 01:41:58,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7750 to 5620. [2020-11-07 01:41:58,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5620 states. [2020-11-07 01:41:58,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5620 states to 5620 states and 7095 transitions. [2020-11-07 01:41:58,641 INFO L78 Accepts]: Start accepts. Automaton has 5620 states and 7095 transitions. Word has length 203 [2020-11-07 01:41:58,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:41:58,643 INFO L481 AbstractCegarLoop]: Abstraction has 5620 states and 7095 transitions. [2020-11-07 01:41:58,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-11-07 01:41:58,643 INFO L276 IsEmpty]: Start isEmpty. Operand 5620 states and 7095 transitions. [2020-11-07 01:41:58,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-11-07 01:41:58,664 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:41:58,664 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:41:58,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 01:41:58,664 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:41:58,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:41:58,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1218694638, now seen corresponding path program 1 times [2020-11-07 01:41:58,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:41:58,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352889406] [2020-11-07 01:41:58,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:41:58,772 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 37 [2020-11-07 01:41:59,073 WARN L194 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 48 [2020-11-07 01:41:59,248 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 33 [2020-11-07 01:42:00,893 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:42:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:42:01,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:42:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:42:01,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:42:04,054 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2020-11-07 01:42:04,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352889406] [2020-11-07 01:42:04,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:42:04,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2020-11-07 01:42:04,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228058321] [2020-11-07 01:42:04,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-11-07 01:42:04,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:42:04,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-11-07 01:42:04,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=1329, Unknown=0, NotChecked=0, Total=1722 [2020-11-07 01:42:04,722 INFO L87 Difference]: Start difference. First operand 5620 states and 7095 transitions. Second operand 38 states. [2020-11-07 01:42:05,027 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-11-07 01:42:05,242 WARN L194 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 01:42:05,418 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 01:42:05,590 WARN L194 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 01:42:05,776 WARN L194 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-11-07 01:42:05,965 WARN L194 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-11-07 01:42:06,157 WARN L194 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 01:42:06,343 WARN L194 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 01:42:06,903 WARN L194 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-11-07 01:42:07,109 WARN L194 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-11-07 01:42:07,513 WARN L194 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 01:42:07,761 WARN L194 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 01:42:10,587 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-11-07 01:42:11,001 WARN L194 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-11-07 01:42:11,381 WARN L194 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 01:42:20,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:42:20,746 INFO L93 Difference]: Finished difference Result 11413 states and 14405 transitions. [2020-11-07 01:42:20,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-07 01:42:20,747 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 219 [2020-11-07 01:42:20,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:42:20,780 INFO L225 Difference]: With dead ends: 11413 [2020-11-07 01:42:20,781 INFO L226 Difference]: Without dead ends: 5969 [2020-11-07 01:42:20,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 35 SyntacticMatches, 28 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2433 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=774, Invalid=3132, Unknown=0, NotChecked=0, Total=3906 [2020-11-07 01:42:20,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5969 states. [2020-11-07 01:42:22,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5969 to 5780. [2020-11-07 01:42:22,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5780 states. [2020-11-07 01:42:22,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5780 states to 5780 states and 7259 transitions. [2020-11-07 01:42:22,879 INFO L78 Accepts]: Start accepts. Automaton has 5780 states and 7259 transitions. Word has length 219 [2020-11-07 01:42:22,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:42:22,879 INFO L481 AbstractCegarLoop]: Abstraction has 5780 states and 7259 transitions. [2020-11-07 01:42:22,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-11-07 01:42:22,879 INFO L276 IsEmpty]: Start isEmpty. Operand 5780 states and 7259 transitions. [2020-11-07 01:42:22,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-11-07 01:42:22,899 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:42:22,899 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:42:22,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 01:42:22,899 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:42:22,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:42:22,900 INFO L82 PathProgramCache]: Analyzing trace with hash 120650885, now seen corresponding path program 1 times [2020-11-07 01:42:22,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:42:22,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213184447] [2020-11-07 01:42:22,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:42:23,161 WARN L194 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 48 [2020-11-07 01:42:23,529 WARN L194 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 39 [2020-11-07 01:42:24,856 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:42:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:42:25,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:42:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:42:25,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:42:25,924 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-11-07 01:42:28,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213184447] [2020-11-07 01:42:28,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:42:28,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2020-11-07 01:42:28,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407070388] [2020-11-07 01:42:28,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-07 01:42:28,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:42:28,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-07 01:42:28,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=856, Unknown=0, NotChecked=0, Total=1122 [2020-11-07 01:42:28,325 INFO L87 Difference]: Start difference. First operand 5780 states and 7259 transitions. Second operand 30 states. [2020-11-07 01:42:28,574 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 01:42:28,756 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 01:42:28,906 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 01:42:29,051 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 01:42:29,220 WARN L194 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 01:42:29,378 WARN L194 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 01:42:29,550 WARN L194 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-11-07 01:42:29,771 WARN L194 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-11-07 01:42:30,069 WARN L194 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-11-07 01:42:30,987 WARN L194 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-11-07 01:42:31,752 WARN L194 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-11-07 01:42:31,969 WARN L194 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-11-07 01:42:32,179 WARN L194 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-11-07 01:42:32,804 WARN L194 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-11-07 01:42:39,616 WARN L194 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-11-07 01:42:44,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:42:44,500 INFO L93 Difference]: Finished difference Result 11656 states and 14724 transitions. [2020-11-07 01:42:44,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-07 01:42:44,502 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 225 [2020-11-07 01:42:44,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:42:44,532 INFO L225 Difference]: With dead ends: 11656 [2020-11-07 01:42:44,532 INFO L226 Difference]: Without dead ends: 6216 [2020-11-07 01:42:44,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 28 SyntacticMatches, 45 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1938 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=597, Invalid=2265, Unknown=0, NotChecked=0, Total=2862 [2020-11-07 01:42:44,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6216 states. [2020-11-07 01:42:47,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6216 to 6089. [2020-11-07 01:42:47,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6089 states. [2020-11-07 01:42:47,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6089 states to 6089 states and 7584 transitions. [2020-11-07 01:42:47,058 INFO L78 Accepts]: Start accepts. Automaton has 6089 states and 7584 transitions. Word has length 225 [2020-11-07 01:42:47,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:42:47,059 INFO L481 AbstractCegarLoop]: Abstraction has 6089 states and 7584 transitions. [2020-11-07 01:42:47,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-11-07 01:42:47,059 INFO L276 IsEmpty]: Start isEmpty. Operand 6089 states and 7584 transitions. [2020-11-07 01:42:47,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-11-07 01:42:47,073 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:42:47,074 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:42:47,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 01:42:47,074 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:42:47,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:42:47,074 INFO L82 PathProgramCache]: Analyzing trace with hash -174001857, now seen corresponding path program 1 times [2020-11-07 01:42:47,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:42:47,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051265221] [2020-11-07 01:42:47,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:42:47,217 WARN L194 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 38 [2020-11-07 01:42:47,469 WARN L194 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 39 [2020-11-07 01:42:47,800 WARN L194 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 49 [2020-11-07 01:42:49,736 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:42:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:42:49,918 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:42:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:42:50,079 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:42:50,255 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 01:42:50,255 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 01:42:50,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 01:42:50,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:42:50 BoogieIcfgContainer [2020-11-07 01:42:50,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:42:50,310 INFO L168 Benchmark]: Toolchain (without parser) took 250863.15 ms. Allocated memory was 151.0 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 125.6 MB in the beginning and 397.4 MB in the end (delta: -271.8 MB). Peak memory consumption was 988.8 MB. Max. memory is 8.0 GB. [2020-11-07 01:42:50,311 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 151.0 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:42:50,311 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.69 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 130.0 MB in the end (delta: -5.0 MB). Peak memory consumption was 28.7 MB. Max. memory is 8.0 GB. [2020-11-07 01:42:50,312 INFO L168 Benchmark]: Boogie Preprocessor took 109.73 ms. Allocated memory is still 151.0 MB. Free memory was 130.0 MB in the beginning and 125.4 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-11-07 01:42:50,313 INFO L168 Benchmark]: RCFGBuilder took 1412.51 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 125.4 MB in the beginning and 159.0 MB in the end (delta: -33.6 MB). Peak memory consumption was 64.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:42:50,314 INFO L168 Benchmark]: TraceAbstraction took 248615.13 ms. Allocated memory was 188.7 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 158.5 MB in the beginning and 397.4 MB in the end (delta: -238.9 MB). Peak memory consumption was 983.8 MB. Max. memory is 8.0 GB. [2020-11-07 01:42:50,323 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 151.0 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 713.69 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 130.0 MB in the end (delta: -5.0 MB). Peak memory consumption was 28.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 109.73 ms. Allocated memory is still 151.0 MB. Free memory was 130.0 MB in the beginning and 125.4 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1412.51 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 125.4 MB in the beginning and 159.0 MB in the end (delta: -33.6 MB). Peak memory consumption was 64.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 248615.13 ms. Allocated memory was 188.7 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 158.5 MB in the beginning and 397.4 MB in the end (delta: -238.9 MB). Peak memory consumption was 983.8 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 e= 5; [L11] int d= 4; [L12] int f= 6; [L13] int c= 3; [L16] int u = 21; [L17] int v = 22; [L18] int w = 23; [L19] int x = 24; [L20] int y = 25; [L21] int z = 26; [L24] int a25 = 0; [L25] int a11 = 0; [L26] int a28 = 7; [L27] int a19 = 1; [L28] int a21 = 1; [L29] int a17 = 8; [L605] int output = -1; [L608] COND TRUE 1 [L611] int input; [L612] input = __VERIFIER_nondet_int() [L613] COND FALSE !((input != 1) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L616] CALL, EXPR calculate_output(input) [L32] COND FALSE !((((!(a11==1)&&((a19==1)&&((input==4)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))))&&(a21==1))&&(a17==8))) [L37] COND FALSE !(((a17==8)&&((((!(a11==1)&&((a21==1)&&(input==6)))&&(a28==7))&&(a19==1))&&!(a25==1)))) [L40] COND FALSE !(((a21==1)&&((a19==1)&&((((((a25==1)||!(a25==1))&&(input==3))&&(a17==9))&&(a11==1))&&(a28==9))))) [L44] COND FALSE !(((a28==9)&&(!(a19==1)&&((a21==1)&&((((input==4)&&!(a25==1))&&!(a11==1))&&(a17==8)))))) [L49] COND FALSE !(((((a17==8)&&((((input==1)&&((a25==1)||!(a25==1)))&&!(a11==1))&&(a19==1)))&&(a21==1))&&(a28==10))) [L52] COND TRUE ((a19==1)&&(!(a25==1)&&((a21==1)&&((((input==1)&&(a17==8))&&!(a11==1))&&(a28==7))))) [L53] a28 = 11 [L54] a25 = 1 [L55] return 26; [L616] RET, EXPR calculate_output(input) [L616] output = calculate_output(input) [L608] COND TRUE 1 [L611] int input; [L612] input = __VERIFIER_nondet_int() [L613] COND FALSE !((input != 1) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L616] CALL, EXPR calculate_output(input) [L32] COND FALSE !((((!(a11==1)&&((a19==1)&&((input==4)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))))&&(a21==1))&&(a17==8))) [L37] COND FALSE !(((a17==8)&&((((!(a11==1)&&((a21==1)&&(input==6)))&&(a28==7))&&(a19==1))&&!(a25==1)))) [L40] COND FALSE !(((a21==1)&&((a19==1)&&((((((a25==1)||!(a25==1))&&(input==3))&&(a17==9))&&(a11==1))&&(a28==9))))) [L44] COND FALSE !(((a28==9)&&(!(a19==1)&&((a21==1)&&((((input==4)&&!(a25==1))&&!(a11==1))&&(a17==8)))))) [L49] COND FALSE !(((((a17==8)&&((((input==1)&&((a25==1)||!(a25==1)))&&!(a11==1))&&(a19==1)))&&(a21==1))&&(a28==10))) [L52] COND FALSE !(((a19==1)&&(!(a25==1)&&((a21==1)&&((((input==1)&&(a17==8))&&!(a11==1))&&(a28==7)))))) [L56] COND FALSE !(((((!(a19==1)&&((input==1)&&((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a25==1)&&(a28==8)))))&&(a21==1))&&(a17==8))&&!(a11==1))) [L61] COND FALSE !(((a19==1)&&(((((input==1)&&(((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||((a28==7)&&!(a25==1)))))&&(a11==1))&&(a21==1))&&(a17==9)))) [L67] COND FALSE !(((a19==1)&&(((a17==8)&&(((input==6)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))&&!(a11==1)))&&(a21==1)))) [L71] COND FALSE !((!(a11==1)&&((((a21==1)&&((input==1)&&(((a28==8)&&!(a25==1))||((a25==1)&&(a28==9)))))&&!(a19==1))&&(a17==8)))) [L76] COND FALSE !((!(a19==1)&&(((((a17==8)&&((a25==1)&&(input==3)))&&(a28==10))&&!(a11==1))&&(a21==1)))) [L84] COND FALSE !((((!(a19==1)&&((a21==1)&&((((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||((a28==7)&&!(a25==1))))&&(input==4))))&&!(a11==1))&&(a17==8))) [L93] COND TRUE ((a17==8)&&((a21==1)&&((a25==1)&&((a19==1)&&(!(a11==1)&&((a28==11)&&(input==3))))))) [L94] a28 = 10 [L95] a25 = 0 [L96] return -1; [L616] RET, EXPR calculate_output(input) [L616] output = calculate_output(input) [L608] COND TRUE 1 [L611] int input; [L612] input = __VERIFIER_nondet_int() [L613] COND FALSE !((input != 1) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L616] CALL, EXPR calculate_output(input) [L32] COND FALSE !((((!(a11==1)&&((a19==1)&&((input==4)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))))&&(a21==1))&&(a17==8))) [L37] COND FALSE !(((a17==8)&&((((!(a11==1)&&((a21==1)&&(input==6)))&&(a28==7))&&(a19==1))&&!(a25==1)))) [L40] COND FALSE !(((a21==1)&&((a19==1)&&((((((a25==1)||!(a25==1))&&(input==3))&&(a17==9))&&(a11==1))&&(a28==9))))) [L44] COND FALSE !(((a28==9)&&(!(a19==1)&&((a21==1)&&((((input==4)&&!(a25==1))&&!(a11==1))&&(a17==8)))))) [L49] COND FALSE !(((((a17==8)&&((((input==1)&&((a25==1)||!(a25==1)))&&!(a11==1))&&(a19==1)))&&(a21==1))&&(a28==10))) [L52] COND FALSE !(((a19==1)&&(!(a25==1)&&((a21==1)&&((((input==1)&&(a17==8))&&!(a11==1))&&(a28==7)))))) [L56] COND FALSE !(((((!(a19==1)&&((input==1)&&((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a25==1)&&(a28==8)))))&&(a21==1))&&(a17==8))&&!(a11==1))) [L61] COND FALSE !(((a19==1)&&(((((input==1)&&(((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||((a28==7)&&!(a25==1)))))&&(a11==1))&&(a21==1))&&(a17==9)))) [L67] COND FALSE !(((a19==1)&&(((a17==8)&&(((input==6)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))&&!(a11==1)))&&(a21==1)))) [L71] COND FALSE !((!(a11==1)&&((((a21==1)&&((input==1)&&(((a28==8)&&!(a25==1))||((a25==1)&&(a28==9)))))&&!(a19==1))&&(a17==8)))) [L76] COND FALSE !((!(a19==1)&&(((((a17==8)&&((a25==1)&&(input==3)))&&(a28==10))&&!(a11==1))&&(a21==1)))) [L84] COND FALSE !((((!(a19==1)&&((a21==1)&&((((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||((a28==7)&&!(a25==1))))&&(input==4))))&&!(a11==1))&&(a17==8))) [L93] COND FALSE !(((a17==8)&&((a21==1)&&((a25==1)&&((a19==1)&&(!(a11==1)&&((a28==11)&&(input==3)))))))) [L97] COND FALSE !(((a28==9)&&(((!(a19==1)&&(((input==3)&&!(a11==1))&&(a17==8)))&&!(a25==1))&&(a21==1)))) [L101] COND FALSE !(((!(a11==1)&&(((a28==11)&&((a25==1)&&((input==1)&&(a19==1))))&&(a17==8)))&&(a21==1))) [L108] COND FALSE !((((a11==1)&&((((((a25==1)&&(a28==8))||(((a25==1)&&(a28==7))||(!(a25==1)&&(a28==7))))&&(input==6))&&(a19==1))&&(a17==9)))&&(a21==1))) [L115] COND TRUE ((a17==8)&&((a21==1)&&(!(a11==1)&&(!(a19==1)&&(((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))&&(input==3)))))) [L116] a28 = 10 [L117] a19 = 1 [L118] a11 = 1 [L119] a25 = 1 [L120] return -1; [L616] RET, EXPR calculate_output(input) [L616] output = calculate_output(input) [L608] COND TRUE 1 [L611] int input; [L612] input = __VERIFIER_nondet_int() [L613] COND FALSE !((input != 1) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L616] CALL calculate_output(input) [L32] COND FALSE !((((!(a11==1)&&((a19==1)&&((input==4)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))))&&(a21==1))&&(a17==8))) [L37] COND FALSE !(((a17==8)&&((((!(a11==1)&&((a21==1)&&(input==6)))&&(a28==7))&&(a19==1))&&!(a25==1)))) [L40] COND FALSE !(((a21==1)&&((a19==1)&&((((((a25==1)||!(a25==1))&&(input==3))&&(a17==9))&&(a11==1))&&(a28==9))))) [L44] COND FALSE !(((a28==9)&&(!(a19==1)&&((a21==1)&&((((input==4)&&!(a25==1))&&!(a11==1))&&(a17==8)))))) [L49] COND FALSE !(((((a17==8)&&((((input==1)&&((a25==1)||!(a25==1)))&&!(a11==1))&&(a19==1)))&&(a21==1))&&(a28==10))) [L52] COND FALSE !(((a19==1)&&(!(a25==1)&&((a21==1)&&((((input==1)&&(a17==8))&&!(a11==1))&&(a28==7)))))) [L56] COND FALSE !(((((!(a19==1)&&((input==1)&&((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a25==1)&&(a28==8)))))&&(a21==1))&&(a17==8))&&!(a11==1))) [L61] COND FALSE !(((a19==1)&&(((((input==1)&&(((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||((a28==7)&&!(a25==1)))))&&(a11==1))&&(a21==1))&&(a17==9)))) [L67] COND FALSE !(((a19==1)&&(((a17==8)&&(((input==6)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9))))&&!(a11==1)))&&(a21==1)))) [L71] COND FALSE !((!(a11==1)&&((((a21==1)&&((input==1)&&(((a28==8)&&!(a25==1))||((a25==1)&&(a28==9)))))&&!(a19==1))&&(a17==8)))) [L76] COND FALSE !((!(a19==1)&&(((((a17==8)&&((a25==1)&&(input==3)))&&(a28==10))&&!(a11==1))&&(a21==1)))) [L84] COND FALSE !((((!(a19==1)&&((a21==1)&&((((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||((a28==7)&&!(a25==1))))&&(input==4))))&&!(a11==1))&&(a17==8))) [L93] COND FALSE !(((a17==8)&&((a21==1)&&((a25==1)&&((a19==1)&&(!(a11==1)&&((a28==11)&&(input==3)))))))) [L97] COND FALSE !(((a28==9)&&(((!(a19==1)&&(((input==3)&&!(a11==1))&&(a17==8)))&&!(a25==1))&&(a21==1)))) [L101] COND FALSE !(((!(a11==1)&&(((a28==11)&&((a25==1)&&((input==1)&&(a19==1))))&&(a17==8)))&&(a21==1))) [L108] COND FALSE !((((a11==1)&&((((((a25==1)&&(a28==8))||(((a25==1)&&(a28==7))||(!(a25==1)&&(a28==7))))&&(input==6))&&(a19==1))&&(a17==9)))&&(a21==1))) [L115] COND FALSE !(((a17==8)&&((a21==1)&&(!(a11==1)&&(!(a19==1)&&(((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))&&(input==3))))))) [L121] COND FALSE !((((((a21==1)&&((a28==10)&&((input==1)&&(a25==1))))&&!(a11==1))&&(a17==8))&&!(a19==1))) [L125] COND FALSE !((!(a11==1)&&(!(a19==1)&&(((a17==8)&&((input==6)&&((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a28==8)&&(a25==1)))))&&(a21==1))))) [L132] COND FALSE !(((((a17==8)&&(!(a19==1)&&(((input==6)&&(a21==1))&&!(a25==1))))&&!(a11==1))&&(a28==9))) [L136] COND FALSE !((!(a11==1)&&((!(a25==1)&&(((a21==1)&&((input==1)&&(a19==1)))&&(a17==8)))&&(a28==11)))) [L141] COND FALSE !((((a11==1)&&(((a19==1)&&((a21==1)&&(((a25==1)||!(a25==1))&&(input==4))))&&(a17==9)))&&(a28==9))) [L145] COND FALSE !(((!(a11==1)&&((a28==9)&&(((!(a19==1)&&(input==5))&&!(a25==1))&&(a21==1))))&&(a17==8))) [L150] COND FALSE !(((!(a11==1)&&(((a17==8)&&(((((a28==7)&&(a25==1))||(!(a25==1)&&(a28==7)))||((a28==8)&&(a25==1)))&&(input==3)))&&!(a19==1)))&&(a21==1))) [L156] COND FALSE !(((a21==1)&&(!(a19==1)&&((((input==5)&&(((a28==8)&&(a25==1))||(((a25==1)&&(a28==7))||(!(a25==1)&&(a28==7)))))&&!(a11==1))&&(a17==8))))) [L161] COND FALSE !((((a17==9)&&(((a28==8)&&(((input==1)&&(a19==1))&&!(a25==1)))&&(a11==1)))&&(a21==1))) [L167] COND FALSE !((((a21==1)&&((a19==1)&&((a28==7)&&((a17==8)&&(!(a25==1)&&(input==3))))))&&!(a11==1))) [L171] COND FALSE !(((a28==11)&&(((a17==8)&&((((input==6)&&(a21==1))&&(a19==1))&&!(a25==1)))&&!(a11==1)))) [L177] COND FALSE !(((!(a11==1)&&(((a17==8)&&((a21==1)&&((input==3)&&(a28==8))))&&(a19==1)))&&(a25==1))) [L181] COND FALSE !((((a21==1)&&(((a19==1)&&(((((a25==1)&&(a28==7))||((a28==7)&&!(a25==1)))||((a25==1)&&(a28==8)))&&(input==4)))&&(a11==1)))&&(a17==9))) [L187] COND FALSE !((((!(a11==1)&&((a17==8)&&(((input==4)&&(a19==1))&&(a28==8))))&&(a21==1))&&(a25==1))) [L189] COND FALSE !(((a19==1)&&((((((input==4)&&(a21==1))&&(a28==9))&&!(a25==1))&&!(a11==1))&&(a17==8)))) [L191] COND FALSE !(((a17==8)&&((((((input==1)&&(a21==1))&&!(a11==1))&&(a19==1))&&!(a25==1))&&(a28==9)))) [L193] COND FALSE !((((((((input==4)&&((a25==1)||!(a25==1)))&&!(a11==1))&&(a21==1))&&(a17==8))&&(a28==10))&&(a19==1))) [L196] COND FALSE !(((!(a25==1)&&((a11==1)&&((a28==8)&&(((a17==9)&&(input==4))&&(a19==1)))))&&(a21==1))) [L200] COND FALSE !((!(a19==1)&&((a17==8)&&((a28==10)&&(((a25==1)&&(!(a11==1)&&(input==5)))&&(a21==1)))))) [L204] COND FALSE !((((((a21==1)&&((input==1)&&((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))))&&(a17==8))&&!(a11==1))&&(a19==1))) [L214] COND FALSE !(((a21==1)&&((((a19==1)&&((a25==1)&&((a28==11)&&(input==6))))&&!(a11==1))&&(a17==8)))) [L217] COND FALSE !((!(a11==1)&&((a19==1)&&((a28==10)&&(((((a25==1)||!(a25==1))&&(input==5))&&(a17==8))&&(a21==1)))))) [L220] COND FALSE !((((((a17==9)&&((((a25==1)||!(a25==1))&&(input==6))&&(a11==1)))&&(a19==1))&&(a21==1))&&(a28==9))) [L225] COND FALSE !((((a17==8)&&(((((input==6)&&(a25==1))&&!(a19==1))&&!(a11==1))&&(a28==10)))&&(a21==1))) [L227] COND FALSE !(((!(a19==1)&&((a17==8)&&(!(a11==1)&&((input==1)&&((((a28==10)&&!(a25==1))||((a25==1)&&(a28==11)))||(!(a25==1)&&(a28==11)))))))&&(a21==1))) [L234] COND FALSE !((((((((input==1)&&(a21==1))&&(a28==9))&&!(a19==1))&&!(a25==1))&&(a17==8))&&!(a11==1))) [L236] COND FALSE !(((a17==8)&&(((!(a11==1)&&((!(a25==1)&&(input==4))&&(a19==1)))&&(a28==7))&&(a21==1)))) [L239] COND FALSE !((!(a11==1)&&(((a17==8)&&((((!(a25==1)&&(a28==11))||((!(a25==1)&&(a28==10))||((a28==11)&&(a25==1))))&&(input==3))&&(a21==1)))&&!(a19==1)))) [L250] COND FALSE !(((((!(a11==1)&&(((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))&&(input==5)))&&(a21==1))&&!(a19==1))&&(a17==8))) [L255] COND FALSE !((((a17==9)&&(((((input==1)&&((a25==1)||!(a25==1)))&&(a11==1))&&(a21==1))&&(a19==1)))&&(a28==9))) [L261] COND FALSE !((!(a11==1)&&((a19==1)&&(((((a28==9)&&(input==6))&&(a21==1))&&(a17==8))&&!(a25==1))))) [L263] COND FALSE !(((a17==9)&&((a21==1)&&((a11==1)&&(((input==3)&&(((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||(!(a25==1)&&(a28==7)))))&&(a19==1)))))) [L278] COND FALSE !(((a28==7)&&((a17==8)&&(!(a25==1)&&((a21==1)&&((a19==1)&&((input==5)&&!(a11==1)))))))) [L282] COND FALSE !(((a28==8)&&((a21==1)&&((!(a11==1)&&(((input==1)&&(a17==8))&&(a19==1)))&&(a25==1))))) [L285] COND FALSE !((((((a17==8)&&(((input==6)&&((a25==1)||!(a25==1)))&&(a21==1)))&&(a28==10))&&!(a11==1))&&(a19==1))) [L288] COND FALSE !(((!(a11==1)&&((!(a19==1)&&(((!(a25==1)&&(a28==11))||(((a28==10)&&!(a25==1))||((a25==1)&&(a28==11))))&&(input==5)))&&(a17==8)))&&(a21==1))) [L293] COND FALSE !(((a17==8)&&(((a21==1)&&(!(a11==1)&&((a25==1)&&((a28==8)&&(input==6)))))&&(a19==1)))) [L295] COND FALSE !((((a19==1)&&((a17==8)&&(((!(a25==1)&&(input==5))&&(a21==1))&&!(a11==1))))&&(a28==11))) [L299] COND FALSE !(((a11==1)&&(((a17==9)&&((a28==9)&&((a19==1)&&(((a25==1)||!(a25==1))&&(input==5)))))&&(a21==1)))) [L311] COND FALSE !((((((((input==3)&&(a19==1))&&(a21==1))&&(a17==8))&&!(a25==1))&&(a28==11))&&!(a11==1))) [L316] COND FALSE !(((a19==1)&&((a21==1)&&((((input==5)&&(((a25==1)&&(a28==8))||(((a28==7)&&(a25==1))||(!(a25==1)&&(a28==7)))))&&(a11==1))&&(a17==9))))) [L330] COND FALSE !((((a19==1)&&(((!(a11==1)&&(((a25==1)||!(a25==1))&&(input==3)))&&(a28==10))&&(a21==1)))&&(a17==8))) [L333] COND FALSE !(((!(a11==1)&&(((((input==4)&&(a17==8))&&!(a25==1))&&(a21==1))&&(a28==11)))&&(a19==1))) [L339] COND FALSE !((((!(a19==1)&&(((input==4)&&(((!(a25==1)&&(a28==10))||((a28==11)&&(a25==1)))||(!(a25==1)&&(a28==11))))&&(a21==1)))&&(a17==8))&&!(a11==1))) [L351] COND FALSE !((!(a11==1)&&(((a17==8)&&((((a25==1)&&(input==4))&&(a19==1))&&(a28==11)))&&(a21==1)))) [L356] COND FALSE !((((((a21==1)&&((((a28==8)&&!(a25==1))||((a28==9)&&(a25==1)))&&(input==6)))&&!(a11==1))&&!(a19==1))&&(a17==8))) [L363] COND FALSE !(((a19==1)&&((((a21==1)&&((!(a25==1)&&(input==3))&&(a17==9)))&&(a28==8))&&(a11==1)))) [L370] COND FALSE !(((a17==8)&&(((a21==1)&&(((input==5)&&((!(a25==1)&&(a28==8))||((a28==9)&&(a25==1))))&&(a19==1)))&&!(a11==1)))) [L377] COND FALSE !(((a19==1)&&(((((a17==8)&&((input==5)&&!(a11==1)))&&(a21==1))&&(a25==1))&&(a28==8)))) [L380] COND FALSE !((((!(a11==1)&&((((a21==1)&&(input==4))&&(a28==10))&&(a17==8)))&&!(a19==1))&&(a25==1))) [L382] COND FALSE !(((a28==8)&&(((a19==1)&&((a11==1)&&(!(a25==1)&&((a17==9)&&(input==6)))))&&(a21==1)))) [L391] COND FALSE !((!(a11==1)&&((((a21==1)&&((input==6)&&((((a28==10)&&!(a25==1))||((a25==1)&&(a28==11)))||(!(a25==1)&&(a28==11)))))&&(a17==8))&&!(a19==1)))) [L396] COND FALSE !((((((!(a25==1)&&((a19==1)&&(input==3)))&&(a28==9))&&(a21==1))&&(a17==8))&&!(a11==1))) [L400] COND FALSE !((((a17==8)&&((((input==4)&&(((a28==8)&&!(a25==1))||((a25==1)&&(a28==9))))&&(a21==1))&&!(a19==1)))&&!(a11==1))) [L404] COND FALSE !((((!(a11==1)&&((((a19==1)&&(input==5))&&(a17==8))&&(a21==1)))&&(a28==9))&&!(a25==1))) [L406] COND FALSE !((((a11==1)&&((a19==1)&&((a21==1)&&(((a17==9)&&(input==5))&&!(a25==1)))))&&(a28==8))) [L409] COND FALSE !((!(a11==1)&&((a21==1)&&(((a19==1)&&((a17==8)&&((a25==1)&&(input==5))))&&(a28==11))))) [L411] COND FALSE !(((a19==1)&&((a17==8)&&(((((!(a25==1)&&(a28==8))||((a25==1)&&(a28==9)))&&(input==3))&&!(a11==1))&&(a21==1))))) [L416] COND FALSE !((((((!(a25==1)&&(a11==1))&&(a28==7))&&!(a19==1))&&(a21==1))&&(a17==8))) [L419] COND FALSE !(((((((a25==1)&&(a11==1))&&(a28==10))&&(a19==1))&&(a21==1))&&(a17==8))) [L422] COND FALSE !(((((((a25==1)&&!(a11==1))&&(a28==7))&&(a19==1))&&(a21==1))&&(a17==8))) [L425] COND FALSE !(((((((a25==1)&&(a11==1))&&(a28==7))&&(a19==1))&&(a21==1))&&(a17==7))) [L428] COND FALSE !(((((((a25==1)&&(a11==1))&&(a28==9))&&(a19==1))&&(a21==1))&&(a17==8))) [L431] COND FALSE !(((((((a25==1)&&(a11==1))&&(a28==9))&&!(a19==1))&&(a21==1))&&(a17==7))) [L434] COND FALSE !((((((!(a25==1)&&(a11==1))&&(a28==10))&&!(a19==1))&&(a21==1))&&(a17==7))) [L437] COND FALSE !((((((!(a25==1)&&(a11==1))&&(a28==9))&&(a19==1))&&(a21==1))&&(a17==8))) [L440] COND FALSE !((((((!(a25==1)&&(a11==1))&&(a28==7))&&(a19==1))&&(a21==1))&&(a17==8))) [L443] COND FALSE !(((((((a25==1)&&(a11==1))&&(a28==8))&&(a19==1))&&(a21==1))&&(a17==8))) [L446] COND FALSE !(((((((a25==1)&&(a11==1))&&(a28==11))&&!(a19==1))&&(a21==1))&&(a17==8))) [L449] COND FALSE !(((((((a25==1)&&!(a11==1))&&(a28==7))&&(a19==1))&&(a21==1))&&(a17==7))) [L452] COND FALSE !((((((!(a25==1)&&(a11==1))&&(a28==8))&&(a19==1))&&(a21==1))&&(a17==7))) [L455] COND FALSE !(((((((a25==1)&&!(a11==1))&&(a28==10))&&!(a19==1))&&(a21==1))&&(a17==7))) [L458] COND FALSE !(((((((a25==1)&&!(a11==1))&&(a28==11))&&(a19==1))&&(a21==1))&&(a17==7))) [L461] COND FALSE !(((((((a25==1)&&!(a11==1))&&(a28==8))&&(a19==1))&&(a21==1))&&(a17==7))) [L464] COND FALSE !((((((!(a25==1)&&!(a11==1))&&(a28==8))&&(a19==1))&&(a21==1))&&(a17==7))) [L467] COND FALSE !((((((!(a25==1)&&!(a11==1))&&(a28==9))&&!(a19==1))&&(a21==1))&&(a17==7))) [L470] COND FALSE !((((((!(a25==1)&&!(a11==1))&&(a28==7))&&(a19==1))&&(a21==1))&&(a17==7))) [L473] COND FALSE !((((((!(a25==1)&&(a11==1))&&(a28==8))&&(a19==1))&&(a21==1))&&(a17==8))) [L476] COND FALSE !((((((!(a25==1)&&(a11==1))&&(a28==9))&&!(a19==1))&&(a21==1))&&(a17==8))) [L479] COND FALSE !(((((((a25==1)&&!(a11==1))&&(a28==7))&&!(a19==1))&&(a21==1))&&(a17==7))) [L482] COND FALSE !((((((!(a25==1)&&(a11==1))&&(a28==11))&&!(a19==1))&&(a21==1))&&(a17==8))) [L485] COND FALSE !((((((!(a25==1)&&(a11==1))&&(a28==8))&&!(a19==1))&&(a21==1))&&(a17==8))) [L488] COND FALSE !(((((((a25==1)&&(a11==1))&&(a28==10))&&!(a19==1))&&(a21==1))&&(a17==8))) [L491] COND FALSE !((((((!(a25==1)&&(a11==1))&&(a28==9))&&(a19==1))&&(a21==1))&&(a17==7))) [L494] COND FALSE !(((((((a25==1)&&(a11==1))&&(a28==11))&&(a19==1))&&(a21==1))&&(a17==8))) [L497] COND FALSE !(((((((a25==1)&&(a11==1))&&(a28==8))&&!(a19==1))&&(a21==1))&&(a17==7))) [L500] COND FALSE !((((((!(a25==1)&&!(a11==1))&&(a28==8))&&!(a19==1))&&(a21==1))&&(a17==7))) [L503] COND FALSE !(((((((a25==1)&&(a11==1))&&(a28==8))&&!(a19==1))&&(a21==1))&&(a17==8))) [L506] COND FALSE !(((((((a25==1)&&(a11==1))&&(a28==7))&&(a19==1))&&(a21==1))&&(a17==8))) [L509] COND TRUE (((((!(a25==1)&&(a11==1))&&(a28==10))&&(a19==1))&&(a21==1))&&(a17==8)) [L510] CALL reach_error() [L4] __assert_fail("0", "Problem02_label46.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 539 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 248.5s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 192.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2780 SDtfs, 36781 SDslu, 7251 SDs, 0 SdLazy, 40975 SolverSat, 4540 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 961 GetRequests, 200 SyntacticMatches, 109 SemanticMatches, 652 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41248 ImplicationChecksByTransitivity, 141.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6089occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 4229 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...