/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/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 22:09:48,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 22:09:48,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 22:09:48,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 22:09:48,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 22:09:48,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 22:09:48,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 22:09:48,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 22:09:48,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 22:09:48,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 22:09:48,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 22:09:48,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 22:09:48,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 22:09:48,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 22:09:48,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 22:09:48,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 22:09:48,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 22:09:48,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 22:09:48,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 22:09:48,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 22:09:48,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 22:09:48,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 22:09:48,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 22:09:48,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 22:09:48,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 22:09:48,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 22:09:48,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 22:09:48,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 22:09:48,961 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 22:09:48,973 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 22:09:48,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 22:09:48,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 22:09:48,975 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 22:09:48,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 22:09:48,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 22:09:48,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 22:09:48,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 22:09:48,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 22:09:48,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 22:09:48,978 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 22:09:48,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 22:09:48,978 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 22:09:48,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 22:09:48,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 22:09:48,979 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 22:09:48,979 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 22:09:48,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 22:09:48,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:09:48,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 22:09:48,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 22:09:48,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 22:09:48,981 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 22:09:49,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 22:09:49,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 22:09:49,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 22:09:49,431 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 22:09:49,432 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 22:09:49,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-23 22:09:49,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d899971f/7f00b493f58048dc8d1b5d4ffdb910d5/FLAGa3eb26a14 [2020-10-23 22:09:50,191 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 22:09:50,192 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-23 22:09:50,214 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d899971f/7f00b493f58048dc8d1b5d4ffdb910d5/FLAGa3eb26a14 [2020-10-23 22:09:50,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d899971f/7f00b493f58048dc8d1b5d4ffdb910d5 [2020-10-23 22:09:50,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 22:09:50,487 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 22:09:50,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 22:09:50,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 22:09:50,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 22:09:50,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:09:50" (1/1) ... [2020-10-23 22:09:50,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4623ecad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:50, skipping insertion in model container [2020-10-23 22:09:50,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:09:50" (1/1) ... [2020-10-23 22:09:50,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 22:09:50,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 22:09:51,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:09:51,117 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 22:09:51,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:09:51,320 INFO L208 MainTranslator]: Completed translation [2020-10-23 22:09:51,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:51 WrapperNode [2020-10-23 22:09:51,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 22:09:51,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 22:09:51,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 22:09:51,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 22:09:51,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:51" (1/1) ... [2020-10-23 22:09:51,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:51" (1/1) ... [2020-10-23 22:09:51,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:51" (1/1) ... [2020-10-23 22:09:51,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:51" (1/1) ... [2020-10-23 22:09:51,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:51" (1/1) ... [2020-10-23 22:09:51,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:51" (1/1) ... [2020-10-23 22:09:51,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:51" (1/1) ... [2020-10-23 22:09:51,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 22:09:51,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 22:09:51,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 22:09:51,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 22:09:51,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:51" (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 [2020-10-23 22:09:51,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 22:09:51,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 22:09:51,610 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 22:09:51,611 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 22:09:51,611 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 22:09:51,611 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 22:09:51,611 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 22:09:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 22:09:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 22:09:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-23 22:09:51,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-23 22:09:51,613 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-23 22:09:51,613 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 22:09:51,614 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-23 22:09:51,633 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-23 22:09:51,634 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-23 22:09:51,635 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-23 22:09:51,635 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-23 22:09:51,636 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-23 22:09:51,636 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-23 22:09:51,637 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 22:09:51,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 22:09:51,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 22:09:51,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 22:09:51,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 22:09:51,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 22:09:51,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 22:09:53,510 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 22:09:53,510 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 22:09:53,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:09:53 BoogieIcfgContainer [2020-10-23 22:09:53,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 22:09:53,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 22:09:53,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 22:09:53,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 22:09:53,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:09:50" (1/3) ... [2020-10-23 22:09:53,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155bfe45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:09:53, skipping insertion in model container [2020-10-23 22:09:53,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:51" (2/3) ... [2020-10-23 22:09:53,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155bfe45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:09:53, skipping insertion in model container [2020-10-23 22:09:53,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:09:53" (3/3) ... [2020-10-23 22:09:53,526 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-23 22:09:53,538 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 22:09:53,544 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 22:09:53,559 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 22:09:53,596 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 22:09:53,596 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 22:09:53,596 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 22:09:53,597 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 22:09:53,597 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 22:09:53,597 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 22:09:53,597 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 22:09:53,597 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 22:09:53,635 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states. [2020-10-23 22:09:53,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-10-23 22:09:53,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:09:53,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:09:53,674 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:09:53,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:09:53,681 INFO L82 PathProgramCache]: Analyzing trace with hash -75147273, now seen corresponding path program 1 times [2020-10-23 22:09:53,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:09:53,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270467244] [2020-10-23 22:09:53,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:09:53,784 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:09:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:54,949 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 22:09:54,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:09:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:09:55,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:09:55,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270467244] [2020-10-23 22:09:55,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:09:55,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 22:09:55,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879139903] [2020-10-23 22:09:55,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 22:09:55,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:09:55,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 22:09:55,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 22:09:55,459 INFO L87 Difference]: Start difference. First operand 833 states. Second operand 4 states. [2020-10-23 22:09:58,703 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-23 22:09:59,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:09:59,351 INFO L93 Difference]: Finished difference Result 1501 states and 1963 transitions. [2020-10-23 22:09:59,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 22:09:59,355 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 427 [2020-10-23 22:09:59,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:09:59,399 INFO L225 Difference]: With dead ends: 1501 [2020-10-23 22:09:59,400 INFO L226 Difference]: Without dead ends: 1119 [2020-10-23 22:09:59,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 22:09:59,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2020-10-23 22:09:59,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1111. [2020-10-23 22:09:59,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1111 states. [2020-10-23 22:09:59,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1354 transitions. [2020-10-23 22:09:59,620 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1354 transitions. Word has length 427 [2020-10-23 22:09:59,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:09:59,624 INFO L481 AbstractCegarLoop]: Abstraction has 1111 states and 1354 transitions. [2020-10-23 22:09:59,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 22:09:59,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1354 transitions. [2020-10-23 22:09:59,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-10-23 22:09:59,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:09:59,641 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:09:59,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 22:09:59,641 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:09:59,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:09:59,642 INFO L82 PathProgramCache]: Analyzing trace with hash 2027011415, now seen corresponding path program 1 times [2020-10-23 22:09:59,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:09:59,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335474056] [2020-10-23 22:09:59,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:09:59,659 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:09:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:10:00,189 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 22:10:00,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:10:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:10:00,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:10:00,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335474056] [2020-10-23 22:10:00,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:10:00,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 22:10:00,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128793982] [2020-10-23 22:10:00,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 22:10:00,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:10:00,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 22:10:00,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 22:10:00,473 INFO L87 Difference]: Start difference. First operand 1111 states and 1354 transitions. Second operand 4 states. [2020-10-23 22:10:02,813 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-23 22:10:03,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:10:03,446 INFO L93 Difference]: Finished difference Result 2233 states and 2803 transitions. [2020-10-23 22:10:03,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 22:10:03,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 427 [2020-10-23 22:10:03,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:10:03,458 INFO L225 Difference]: With dead ends: 2233 [2020-10-23 22:10:03,458 INFO L226 Difference]: Without dead ends: 1838 [2020-10-23 22:10:03,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 22:10:03,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2020-10-23 22:10:03,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1825. [2020-10-23 22:10:03,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1825 states. [2020-10-23 22:10:03,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 2262 transitions. [2020-10-23 22:10:03,561 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 2262 transitions. Word has length 427 [2020-10-23 22:10:03,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:10:03,563 INFO L481 AbstractCegarLoop]: Abstraction has 1825 states and 2262 transitions. [2020-10-23 22:10:03,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 22:10:03,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 2262 transitions. [2020-10-23 22:10:03,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-10-23 22:10:03,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:10:03,575 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:10:03,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 22:10:03,576 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:10:03,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:10:03,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1432075447, now seen corresponding path program 1 times [2020-10-23 22:10:03,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:10:03,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390818746] [2020-10-23 22:10:03,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:10:03,586 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:10:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:10:04,263 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 22:10:04,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:10:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:10:04,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:10:04,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390818746] [2020-10-23 22:10:04,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:10:04,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 22:10:04,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913707144] [2020-10-23 22:10:04,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 22:10:04,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:10:04,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 22:10:04,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 22:10:04,503 INFO L87 Difference]: Start difference. First operand 1825 states and 2262 transitions. Second operand 5 states. [2020-10-23 22:10:08,216 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 22:10:09,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:10:09,337 INFO L93 Difference]: Finished difference Result 5010 states and 6279 transitions. [2020-10-23 22:10:09,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 22:10:09,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 427 [2020-10-23 22:10:09,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:10:09,354 INFO L225 Difference]: With dead ends: 5010 [2020-10-23 22:10:09,354 INFO L226 Difference]: Without dead ends: 3369 [2020-10-23 22:10:09,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:10:09,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3369 states. [2020-10-23 22:10:09,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3369 to 3366. [2020-10-23 22:10:09,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3366 states. [2020-10-23 22:10:09,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3366 states to 3366 states and 4184 transitions. [2020-10-23 22:10:09,564 INFO L78 Accepts]: Start accepts. Automaton has 3366 states and 4184 transitions. Word has length 427 [2020-10-23 22:10:09,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:10:09,565 INFO L481 AbstractCegarLoop]: Abstraction has 3366 states and 4184 transitions. [2020-10-23 22:10:09,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 22:10:09,565 INFO L276 IsEmpty]: Start isEmpty. Operand 3366 states and 4184 transitions. [2020-10-23 22:10:09,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2020-10-23 22:10:09,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:10:09,577 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:10:09,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 22:10:09,578 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:10:09,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:10:09,578 INFO L82 PathProgramCache]: Analyzing trace with hash -375145285, now seen corresponding path program 1 times [2020-10-23 22:10:09,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:10:09,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910237599] [2020-10-23 22:10:09,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:10:09,582 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:10:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:10:10,037 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 22:10:10,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:10:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:10:10,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:10:10,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910237599] [2020-10-23 22:10:10,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:10:10,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 22:10:10,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711775403] [2020-10-23 22:10:10,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 22:10:10,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:10:10,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 22:10:10,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 22:10:10,247 INFO L87 Difference]: Start difference. First operand 3366 states and 4184 transitions. Second operand 4 states. [2020-10-23 22:10:13,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:10:13,324 INFO L93 Difference]: Finished difference Result 9691 states and 12122 transitions. [2020-10-23 22:10:13,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 22:10:13,324 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 428 [2020-10-23 22:10:13,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:10:13,354 INFO L225 Difference]: With dead ends: 9691 [2020-10-23 22:10:13,355 INFO L226 Difference]: Without dead ends: 6543 [2020-10-23 22:10:13,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 22:10:13,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6543 states. [2020-10-23 22:10:13,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6543 to 3368. [2020-10-23 22:10:13,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3368 states. [2020-10-23 22:10:13,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3368 states to 3368 states and 4186 transitions. [2020-10-23 22:10:13,640 INFO L78 Accepts]: Start accepts. Automaton has 3368 states and 4186 transitions. Word has length 428 [2020-10-23 22:10:13,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:10:13,640 INFO L481 AbstractCegarLoop]: Abstraction has 3368 states and 4186 transitions. [2020-10-23 22:10:13,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 22:10:13,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3368 states and 4186 transitions. [2020-10-23 22:10:13,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-23 22:10:13,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:10:13,653 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:10:13,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 22:10:13,653 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:10:13,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:10:13,654 INFO L82 PathProgramCache]: Analyzing trace with hash -523023765, now seen corresponding path program 1 times [2020-10-23 22:10:13,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:10:13,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40108755] [2020-10-23 22:10:13,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:10:13,658 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:10:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:10:14,204 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 22:10:14,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:10:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:10:14,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:10:14,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40108755] [2020-10-23 22:10:14,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:10:14,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 22:10:14,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302341718] [2020-10-23 22:10:14,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 22:10:14,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:10:14,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 22:10:14,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 22:10:14,456 INFO L87 Difference]: Start difference. First operand 3368 states and 4186 transitions. Second operand 5 states. [2020-10-23 22:10:18,196 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 22:10:19,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:10:19,374 INFO L93 Difference]: Finished difference Result 9484 states and 11846 transitions. [2020-10-23 22:10:19,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 22:10:19,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 429 [2020-10-23 22:10:19,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:10:19,401 INFO L225 Difference]: With dead ends: 9484 [2020-10-23 22:10:19,402 INFO L226 Difference]: Without dead ends: 6337 [2020-10-23 22:10:19,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:10:19,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6337 states. [2020-10-23 22:10:19,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6337 to 6334. [2020-10-23 22:10:19,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6334 states. [2020-10-23 22:10:19,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6334 states to 6334 states and 7858 transitions. [2020-10-23 22:10:19,984 INFO L78 Accepts]: Start accepts. Automaton has 6334 states and 7858 transitions. Word has length 429 [2020-10-23 22:10:19,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:10:19,985 INFO L481 AbstractCegarLoop]: Abstraction has 6334 states and 7858 transitions. [2020-10-23 22:10:19,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 22:10:19,985 INFO L276 IsEmpty]: Start isEmpty. Operand 6334 states and 7858 transitions. [2020-10-23 22:10:20,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2020-10-23 22:10:20,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:10:20,001 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:10:20,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 22:10:20,001 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:10:20,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:10:20,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1472963315, now seen corresponding path program 1 times [2020-10-23 22:10:20,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:10:20,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190578018] [2020-10-23 22:10:20,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:10:20,006 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:10:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:10:20,404 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 22:10:20,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:10:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:10:20,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:10:20,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190578018] [2020-10-23 22:10:20,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:10:20,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 22:10:20,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104816029] [2020-10-23 22:10:20,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 22:10:20,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:10:20,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 22:10:20,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 22:10:20,616 INFO L87 Difference]: Start difference. First operand 6334 states and 7858 transitions. Second operand 4 states. [2020-10-23 22:10:24,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:10:24,167 INFO L93 Difference]: Finished difference Result 18532 states and 23061 transitions. [2020-10-23 22:10:24,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 22:10:24,168 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 430 [2020-10-23 22:10:24,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:10:24,220 INFO L225 Difference]: With dead ends: 18532 [2020-10-23 22:10:24,220 INFO L226 Difference]: Without dead ends: 12439 [2020-10-23 22:10:24,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 22:10:24,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12439 states. [2020-10-23 22:10:24,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12439 to 6338. [2020-10-23 22:10:24,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6338 states. [2020-10-23 22:10:25,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6338 states to 6338 states and 7862 transitions. [2020-10-23 22:10:25,000 INFO L78 Accepts]: Start accepts. Automaton has 6338 states and 7862 transitions. Word has length 430 [2020-10-23 22:10:25,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:10:25,001 INFO L481 AbstractCegarLoop]: Abstraction has 6338 states and 7862 transitions. [2020-10-23 22:10:25,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 22:10:25,001 INFO L276 IsEmpty]: Start isEmpty. Operand 6338 states and 7862 transitions. [2020-10-23 22:10:25,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-23 22:10:25,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:10:25,013 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:10:25,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 22:10:25,013 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:10:25,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:10:25,014 INFO L82 PathProgramCache]: Analyzing trace with hash -789787449, now seen corresponding path program 1 times [2020-10-23 22:10:25,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:10:25,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324829324] [2020-10-23 22:10:25,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:10:25,017 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:10:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:10:25,500 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 22:10:25,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:10:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:10:25,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:10:25,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324829324] [2020-10-23 22:10:25,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:10:25,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 22:10:25,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407100187] [2020-10-23 22:10:25,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 22:10:25,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:10:25,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 22:10:25,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 22:10:25,758 INFO L87 Difference]: Start difference. First operand 6338 states and 7862 transitions. Second operand 5 states. [2020-10-23 22:10:29,765 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 22:10:31,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:10:31,078 INFO L93 Difference]: Finished difference Result 16900 states and 20986 transitions. [2020-10-23 22:10:31,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 22:10:31,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 431 [2020-10-23 22:10:31,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:10:31,101 INFO L225 Difference]: With dead ends: 16900 [2020-10-23 22:10:31,102 INFO L226 Difference]: Without dead ends: 10809 [2020-10-23 22:10:31,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:10:31,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10809 states. [2020-10-23 22:10:32,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10809 to 10806. [2020-10-23 22:10:32,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10806 states. [2020-10-23 22:10:32,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10806 states to 10806 states and 13312 transitions. [2020-10-23 22:10:32,173 INFO L78 Accepts]: Start accepts. Automaton has 10806 states and 13312 transitions. Word has length 431 [2020-10-23 22:10:32,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:10:32,173 INFO L481 AbstractCegarLoop]: Abstraction has 10806 states and 13312 transitions. [2020-10-23 22:10:32,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 22:10:32,174 INFO L276 IsEmpty]: Start isEmpty. Operand 10806 states and 13312 transitions. [2020-10-23 22:10:32,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2020-10-23 22:10:32,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:10:32,194 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:10:32,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 22:10:32,194 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:10:32,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:10:32,195 INFO L82 PathProgramCache]: Analyzing trace with hash -136774781, now seen corresponding path program 1 times [2020-10-23 22:10:32,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:10:32,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381906214] [2020-10-23 22:10:32,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:10:32,199 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:10:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:10:32,671 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 22:10:32,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:10:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:10:32,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:10:32,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381906214] [2020-10-23 22:10:32,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:10:32,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 22:10:32,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064096736] [2020-10-23 22:10:32,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 22:10:32,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:10:32,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 22:10:32,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 22:10:32,808 INFO L87 Difference]: Start difference. First operand 10806 states and 13312 transitions. Second operand 4 states. [2020-10-23 22:10:37,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:10:37,507 INFO L93 Difference]: Finished difference Result 31482 states and 38867 transitions. [2020-10-23 22:10:37,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 22:10:37,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 432 [2020-10-23 22:10:37,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:10:37,548 INFO L225 Difference]: With dead ends: 31482 [2020-10-23 22:10:37,549 INFO L226 Difference]: Without dead ends: 21287 [2020-10-23 22:10:37,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 22:10:37,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21287 states. [2020-10-23 22:10:38,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21287 to 10814. [2020-10-23 22:10:38,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10814 states. [2020-10-23 22:10:38,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10814 states to 10814 states and 13320 transitions. [2020-10-23 22:10:38,809 INFO L78 Accepts]: Start accepts. Automaton has 10814 states and 13320 transitions. Word has length 432 [2020-10-23 22:10:38,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:10:38,810 INFO L481 AbstractCegarLoop]: Abstraction has 10814 states and 13320 transitions. [2020-10-23 22:10:38,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 22:10:38,810 INFO L276 IsEmpty]: Start isEmpty. Operand 10814 states and 13320 transitions. [2020-10-23 22:10:38,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-10-23 22:10:38,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:10:38,829 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:10:38,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 22:10:38,829 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:10:38,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:10:38,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1532807733, now seen corresponding path program 1 times [2020-10-23 22:10:38,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:10:38,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788166187] [2020-10-23 22:10:38,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:10:38,834 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:10:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 22:10:38,907 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 22:10:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 22:10:38,987 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 22:10:39,580 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 22:10:39,580 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 22:10:39,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 22:10:39,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:10:39 BoogieIcfgContainer [2020-10-23 22:10:39,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 22:10:39,634 INFO L168 Benchmark]: Toolchain (without parser) took 49150.44 ms. Allocated memory was 151.0 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 126.6 MB in the beginning and 645.3 MB in the end (delta: -518.6 MB). Peak memory consumption was 502.4 MB. Max. memory is 8.0 GB. [2020-10-23 22:10:39,634 INFO L168 Benchmark]: CDTParser took 0.97 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 22:10:39,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 827.75 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 99.6 MB in the end (delta: 26.4 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2020-10-23 22:10:39,636 INFO L168 Benchmark]: Boogie Preprocessor took 176.75 ms. Allocated memory is still 151.0 MB. Free memory was 99.6 MB in the beginning and 95.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 22:10:39,636 INFO L168 Benchmark]: RCFGBuilder took 2014.08 ms. Allocated memory was 151.0 MB in the beginning and 187.7 MB in the end (delta: 36.7 MB). Free memory was 95.6 MB in the beginning and 96.0 MB in the end (delta: -427.8 kB). Peak memory consumption was 44.0 MB. Max. memory is 8.0 GB. [2020-10-23 22:10:39,637 INFO L168 Benchmark]: TraceAbstraction took 46115.33 ms. Allocated memory was 187.7 MB in the beginning and 1.2 GB in the end (delta: 983.6 MB). Free memory was 96.0 MB in the beginning and 645.3 MB in the end (delta: -549.3 MB). Peak memory consumption was 434.3 MB. Max. memory is 8.0 GB. [2020-10-23 22:10:39,641 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.97 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 827.75 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 99.6 MB in the end (delta: 26.4 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 176.75 ms. Allocated memory is still 151.0 MB. Free memory was 99.6 MB in the beginning and 95.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2014.08 ms. Allocated memory was 151.0 MB in the beginning and 187.7 MB in the end (delta: 36.7 MB). Free memory was 95.6 MB in the beginning and 96.0 MB in the end (delta: -427.8 kB). Peak memory consumption was 44.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 46115.33 ms. Allocated memory was 187.7 MB in the beginning and 1.2 GB in the end (delta: 983.6 MB). Free memory was 96.0 MB in the beginning and 645.3 MB in the end (delta: -549.3 MB). Peak memory consumption was 434.3 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: [L1] int __return_main; [L16] msg_t nomsg = (msg_t )-1; [L17] port_t p12 = 0; [L18] char p12_old = '\x0'; [L19] char p12_new = '\x0'; [L20] _Bool ep12 = 0; [L21] port_t p13 = 0; [L22] char p13_old = '\x0'; [L23] char p13_new = '\x0'; [L24] _Bool ep13 = 0; [L25] port_t p21 = 0; [L26] char p21_old = '\x0'; [L27] char p21_new = '\x0'; [L28] _Bool ep21 = 0; [L29] port_t p23 = 0; [L30] char p23_old = '\x0'; [L31] char p23_new = '\x0'; [L32] _Bool ep23 = 0; [L33] port_t p31 = 0; [L34] char p31_old = '\x0'; [L35] char p31_new = '\x0'; [L36] _Bool ep31 = 0; [L37] port_t p32 = 0; [L38] char p32_old = '\x0'; [L39] char p32_new = '\x0'; [L40] _Bool ep32 = 0; [L41] char id1 = '\x0'; [L42] char r1 = '\x0'; [L43] char st1 = '\x0'; [L44] char nl1 = '\x0'; [L45] char m1 = '\x0'; [L46] char max1 = '\x0'; [L47] _Bool mode1 = 0; [L48] char id2 = '\x0'; [L49] char r2 = '\x0'; [L50] char st2 = '\x0'; [L51] char nl2 = '\x0'; [L52] char m2 = '\x0'; [L53] char max2 = '\x0'; [L54] _Bool mode2 = 0; [L55] char id3 = '\x0'; [L56] char r3 = '\x0'; [L57] char st3 = '\x0'; [L58] char nl3 = '\x0'; [L59] char m3 = '\x0'; [L60] char max3 = '\x0'; [L61] _Bool mode3 = 0; [L65] void (*nodes[3])() = { &node1, &node2, &node3 }; [L69] int __return_1708; [L70] int __return_1836; [L71] int __return_1954; [L72] int __return_2075; [L73] int __return_2198; [L74] int __tmp_2199_0; [L75] int __return_2307; [L76] int __return_2212; [L79] int main__c1; [L80] int main__i2; [L81] main__c1 = 0 [L82] ep12 = __VERIFIER_nondet_bool() [L83] ep13 = __VERIFIER_nondet_bool() [L84] ep21 = __VERIFIER_nondet_bool() [L85] ep23 = __VERIFIER_nondet_bool() [L86] ep31 = __VERIFIER_nondet_bool() [L87] ep32 = __VERIFIER_nondet_bool() [L88] id1 = __VERIFIER_nondet_char() [L89] r1 = __VERIFIER_nondet_char() [L90] st1 = __VERIFIER_nondet_char() [L91] nl1 = __VERIFIER_nondet_char() [L92] m1 = __VERIFIER_nondet_char() [L93] max1 = __VERIFIER_nondet_char() [L94] mode1 = __VERIFIER_nondet_bool() [L95] id2 = __VERIFIER_nondet_char() [L96] r2 = __VERIFIER_nondet_char() [L97] st2 = __VERIFIER_nondet_char() [L98] nl2 = __VERIFIER_nondet_char() [L99] m2 = __VERIFIER_nondet_char() [L100] max2 = __VERIFIER_nondet_char() [L101] mode2 = __VERIFIER_nondet_bool() [L102] id3 = __VERIFIER_nondet_char() [L103] r3 = __VERIFIER_nondet_char() [L104] st3 = __VERIFIER_nondet_char() [L105] nl3 = __VERIFIER_nondet_char() [L106] m3 = __VERIFIER_nondet_char() [L107] max3 = __VERIFIER_nondet_char() [L108] mode3 = __VERIFIER_nondet_bool() [L110] _Bool init__r121; [L111] _Bool init__r131; [L112] _Bool init__r211; [L113] _Bool init__r231; [L114] _Bool init__r311; [L115] _Bool init__r321; [L116] _Bool init__r122; [L117] int init__tmp; [L118] _Bool init__r132; [L119] int init__tmp___0; [L120] _Bool init__r212; [L121] int init__tmp___1; [L122] _Bool init__r232; [L123] int init__tmp___2; [L124] _Bool init__r312; [L125] int init__tmp___3; [L126] _Bool init__r322; [L127] int init__tmp___4; [L128] int init__tmp___5; [L129] init__r121 = ep12 [L130] init__r131 = ep13 [L131] init__r211 = ep21 [L132] init__r231 = ep23 [L133] init__r311 = ep31 [L134] init__r321 = ep32 [L135] COND FALSE !(!(init__r121 == 0)) [L2225] COND FALSE !(!(init__r131 == 0)) [L2241] init__tmp = 0 [L139] init__r122 = (_Bool)init__tmp [L140] COND FALSE !(!(init__r131 == 0)) [L2202] COND FALSE !(!(init__r121 == 0)) [L2218] init__tmp___0 = 0 [L144] init__r132 = (_Bool)init__tmp___0 [L145] COND FALSE !(!(init__r211 == 0)) [L2179] COND FALSE !(!(init__r231 == 0)) [L2195] init__tmp___1 = 0 [L149] init__r212 = (_Bool)init__tmp___1 [L150] COND FALSE !(!(init__r231 == 0)) [L2156] COND FALSE !(!(init__r211 == 0)) [L2172] init__tmp___2 = 0 [L154] init__r232 = (_Bool)init__tmp___2 [L155] COND FALSE !(!(init__r311 == 0)) [L2133] COND FALSE !(!(init__r321 == 0)) [L2149] init__tmp___3 = 0 [L159] init__r312 = (_Bool)init__tmp___3 [L160] COND FALSE !(!(init__r321 == 0)) [L2110] COND FALSE !(!(init__r311 == 0)) [L2126] init__tmp___4 = 0 [L164] init__r322 = (_Bool)init__tmp___4 [L165] COND TRUE ((int)id1) != ((int)id2) [L167] COND TRUE ((int)id1) != ((int)id3) [L169] COND TRUE ((int)id2) != ((int)id3) [L171] COND TRUE ((int)id1) >= 0 [L173] COND TRUE ((int)id2) >= 0 [L175] COND TRUE ((int)id3) >= 0 [L177] COND TRUE ((int)r1) == 0 [L179] COND TRUE ((int)r2) == 0 [L181] COND TRUE ((int)r3) == 0 [L183] COND TRUE ((int)max1) == ((int)id1) [L185] COND TRUE ((int)max2) == ((int)id2) [L187] COND TRUE ((int)max3) == ((int)id3) [L189] COND TRUE ((int)st1) == 0 [L191] COND TRUE ((int)st2) == 0 [L193] COND TRUE ((int)st3) == 0 [L195] COND TRUE ((int)nl1) == 0 [L197] COND TRUE ((int)nl2) == 0 [L199] COND TRUE ((int)nl3) == 0 [L201] COND TRUE ((int)mode1) == 0 [L203] COND TRUE ((int)mode2) == 0 [L205] COND TRUE ((int)mode3) == 0 [L207] init__tmp___5 = 1 [L208] __return_1708 = init__tmp___5 [L209] main__i2 = __return_1708 [L210] COND TRUE main__i2 != 0 [L212] p12_old = nomsg [L213] p12_new = nomsg [L214] p13_old = nomsg [L215] p13_new = nomsg [L216] p21_old = nomsg [L217] p21_new = nomsg [L218] p23_old = nomsg [L219] p23_new = nomsg [L220] p31_old = nomsg [L221] p31_new = nomsg [L222] p32_old = nomsg [L223] p32_new = nomsg [L224] main__i2 = 0 [L225] COND TRUE main__i2 < 6 [L228] COND FALSE !(!(mode1 == 0)) [L234] COND TRUE ((int)r1) < 2 [L236] COND FALSE !(!(ep12 == 0)) [L247] COND FALSE !(!(ep13 == 0)) [L258] mode1 = 1 [L260] COND FALSE !(!(mode2 == 0)) [L266] COND TRUE ((int)r2) < 2 [L268] COND FALSE !(!(ep21 == 0)) [L279] COND FALSE !(!(ep23 == 0)) [L290] mode2 = 1 [L292] COND FALSE !(!(mode3 == 0)) [L298] COND TRUE ((int)r3) < 2 [L300] COND FALSE !(!(ep31 == 0)) [L311] COND FALSE !(!(ep32 == 0)) [L322] mode3 = 1 [L323] p12_old = p12_new [L324] p12_new = nomsg [L325] p13_old = p13_new [L326] p13_new = nomsg [L327] p21_old = p21_new [L328] p21_new = nomsg [L329] p23_old = p23_new [L330] p23_new = nomsg [L331] p31_old = p31_new [L332] p31_new = nomsg [L333] p32_old = p32_new [L334] p32_new = nomsg [L336] int check__tmp; [L337] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L339] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L341] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L343] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L345] COND FALSE !(((int)r1) >= 2) [L351] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L353] COND TRUE ((int)r1) < 2 [L355] COND FALSE !(((int)r1) >= 2) [L361] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L363] COND TRUE ((int)r1) < 2 [L365] check__tmp = 1 [L366] __return_1836 = check__tmp [L367] main__c1 = __return_1836 [L369] _Bool __tmp_1; [L370] __tmp_1 = main__c1 [L371] _Bool assert__arg; [L372] assert__arg = __tmp_1 [L373] COND FALSE !(assert__arg == 0) [L379] int main____CPAchecker_TMP_0 = main__i2; [L380] main__i2 = main__i2 + 1 [L381] COND TRUE main__i2 < 6 [L384] COND TRUE !(mode1 == 0) [L386] r1 = (char)(((int)r1) + 1) [L387] COND FALSE !(!(ep21 == 0)) [L395] COND FALSE !(!(ep31 == 0)) [L403] COND FALSE !(((int)r1) == 2) [L409] mode1 = 0 [L411] COND TRUE !(mode2 == 0) [L413] r2 = (char)(((int)r2) + 1) [L414] COND FALSE !(!(ep12 == 0)) [L422] COND FALSE !(!(ep32 == 0)) [L430] COND FALSE !(((int)r2) == 2) [L436] mode2 = 0 [L438] COND TRUE !(mode3 == 0) [L440] r3 = (char)(((int)r3) + 1) [L441] COND FALSE !(!(ep13 == 0)) [L449] COND FALSE !(!(ep23 == 0)) [L457] COND FALSE !(((int)r3) == 2) [L463] mode3 = 0 [L464] p12_old = p12_new [L465] p12_new = nomsg [L466] p13_old = p13_new [L467] p13_new = nomsg [L468] p21_old = p21_new [L469] p21_new = nomsg [L470] p23_old = p23_new [L471] p23_new = nomsg [L472] p31_old = p31_new [L473] p31_new = nomsg [L474] p32_old = p32_new [L475] p32_new = nomsg [L477] int check__tmp; [L478] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L480] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L482] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L484] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L486] COND FALSE !(((int)r1) >= 2) [L492] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L494] COND TRUE ((int)r1) < 2 [L496] COND FALSE !(((int)r1) >= 2) [L502] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L504] COND TRUE ((int)r1) < 2 [L506] check__tmp = 1 [L507] __return_1954 = check__tmp [L508] main__c1 = __return_1954 [L510] _Bool __tmp_2; [L511] __tmp_2 = main__c1 [L512] _Bool assert__arg; [L513] assert__arg = __tmp_2 [L514] COND FALSE !(assert__arg == 0) [L520] int main____CPAchecker_TMP_0 = main__i2; [L521] main__i2 = main__i2 + 1 [L522] COND TRUE main__i2 < 6 [L525] COND FALSE !(!(mode1 == 0)) [L531] COND TRUE ((int)r1) < 2 [L533] COND FALSE !(!(ep12 == 0)) [L544] COND FALSE !(!(ep13 == 0)) [L555] mode1 = 1 [L557] COND FALSE !(!(mode2 == 0)) [L563] COND TRUE ((int)r2) < 2 [L565] COND FALSE !(!(ep21 == 0)) [L576] COND FALSE !(!(ep23 == 0)) [L587] mode2 = 1 [L589] COND FALSE !(!(mode3 == 0)) [L595] COND TRUE ((int)r3) < 2 [L597] COND FALSE !(!(ep31 == 0)) [L608] COND FALSE !(!(ep32 == 0)) [L619] mode3 = 1 [L620] p12_old = p12_new [L621] p12_new = nomsg [L622] p13_old = p13_new [L623] p13_new = nomsg [L624] p21_old = p21_new [L625] p21_new = nomsg [L626] p23_old = p23_new [L627] p23_new = nomsg [L628] p31_old = p31_new [L629] p31_new = nomsg [L630] p32_old = p32_new [L631] p32_new = nomsg [L633] int check__tmp; [L634] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L636] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L638] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L640] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L642] COND FALSE !(((int)r1) >= 2) [L648] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L650] COND TRUE ((int)r1) < 2 [L652] COND FALSE !(((int)r1) >= 2) [L658] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L660] COND TRUE ((int)r1) < 2 [L662] check__tmp = 1 [L663] __return_2075 = check__tmp [L664] main__c1 = __return_2075 [L666] _Bool __tmp_3; [L667] __tmp_3 = main__c1 [L668] _Bool assert__arg; [L669] assert__arg = __tmp_3 [L670] COND FALSE !(assert__arg == 0) [L676] int main____CPAchecker_TMP_0 = main__i2; [L677] main__i2 = main__i2 + 1 [L678] COND TRUE main__i2 < 6 [L681] COND TRUE !(mode1 == 0) [L683] r1 = (char)(((int)r1) + 1) [L684] COND FALSE !(!(ep21 == 0)) [L692] COND FALSE !(!(ep31 == 0)) [L700] COND TRUE ((int)r1) == 2 [L702] COND TRUE ((int)max1) == ((int)id1) [L704] st1 = 1 [L706] mode1 = 0 [L708] COND TRUE !(mode2 == 0) [L710] r2 = (char)(((int)r2) + 1) [L711] COND FALSE !(!(ep12 == 0)) [L719] COND FALSE !(!(ep32 == 0)) [L727] COND TRUE ((int)r2) == 2 [L729] COND TRUE ((int)max2) == ((int)id2) [L731] st2 = 1 [L733] mode2 = 0 [L735] COND TRUE !(mode3 == 0) [L737] r3 = (char)(((int)r3) + 1) [L738] COND FALSE !(!(ep13 == 0)) [L746] COND FALSE !(!(ep23 == 0)) [L754] COND TRUE ((int)r3) == 2 [L756] COND TRUE ((int)max3) == ((int)id3) [L758] st3 = 1 [L760] mode3 = 0 [L761] p12_old = p12_new [L762] p12_new = nomsg [L763] p13_old = p13_new [L764] p13_new = nomsg [L765] p21_old = p21_new [L766] p21_new = nomsg [L767] p23_old = p23_new [L768] p23_new = nomsg [L769] p31_old = p31_new [L770] p31_new = nomsg [L771] p32_old = p32_new [L772] p32_new = nomsg [L774] int check__tmp; [L775] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1400] check__tmp = 0 [L803] __return_2198 = check__tmp [L804] main__c1 = __return_2198 [L805] __tmp_2199_0 = main____CPAchecker_TMP_0 [L807] main____CPAchecker_TMP_0 = __tmp_2199_0 [L809] _Bool __tmp_4; [L810] __tmp_4 = main__c1 [L811] _Bool assert__arg; [L812] assert__arg = __tmp_4 [L813] COND TRUE assert__arg == 0 [L815] CALL reach_error() [L4] __assert_fail("0", "pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 838 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 45.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 33.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8956 SDtfs, 7261 SDslu, 6972 SDs, 0 SdLazy, 9341 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10814occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 19779 StatesRemovedByMinimization, 8 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...