/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/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 19:00:40,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 19:00:40,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 19:00:40,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 19:00:40,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 19:00:40,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 19:00:40,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 19:00:40,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 19:00:40,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 19:00:40,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 19:00:40,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 19:00:40,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 19:00:40,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 19:00:40,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 19:00:40,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 19:00:40,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 19:00:40,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 19:00:40,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 19:00:40,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 19:00:40,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 19:00:40,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 19:00:40,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 19:00:40,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 19:00:40,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 19:00:40,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 19:00:40,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 19:00:40,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 19:00:40,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 19:00:40,694 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 19:00:40,709 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 19:00:40,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 19:00:40,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 19:00:40,712 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 19:00:40,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 19:00:40,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 19:00:40,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 19:00:40,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 19:00:40,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 19:00:40,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 19:00:40,713 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 19:00:40,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 19:00:40,714 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 19:00:40,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 19:00:40,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 19:00:40,715 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 19:00:40,715 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 19:00:40,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 19:00:40,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 19:00:40,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 19:00:40,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 19:00:40,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 19:00:40,716 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 19:00:41,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 19:00:41,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 19:00:41,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 19:00:41,240 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 19:00:41,240 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 19:00:41,242 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2021-02-23 19:00:41,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86a9ff59f/9b24eaa8a9124c838c746bdbd2412ab5/FLAG9dca85343 [2021-02-23 19:00:42,169 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 19:00:42,170 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2021-02-23 19:00:42,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86a9ff59f/9b24eaa8a9124c838c746bdbd2412ab5/FLAG9dca85343 [2021-02-23 19:00:42,390 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86a9ff59f/9b24eaa8a9124c838c746bdbd2412ab5 [2021-02-23 19:00:42,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 19:00:42,412 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 19:00:42,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 19:00:42,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 19:00:42,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 19:00:42,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:00:42" (1/1) ... [2021-02-23 19:00:42,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@416b5523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:42, skipping insertion in model container [2021-02-23 19:00:42,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:00:42" (1/1) ... [2021-02-23 19:00:42,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 19:00:42,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 19:00:42,950 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c[15516,15529] [2021-02-23 19:00:42,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 19:00:42,980 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 19:00:43,113 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c[15516,15529] [2021-02-23 19:00:43,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 19:00:43,161 INFO L208 MainTranslator]: Completed translation [2021-02-23 19:00:43,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:43 WrapperNode [2021-02-23 19:00:43,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 19:00:43,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 19:00:43,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 19:00:43,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 19:00:43,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:43" (1/1) ... [2021-02-23 19:00:43,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:43" (1/1) ... [2021-02-23 19:00:43,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:43" (1/1) ... [2021-02-23 19:00:43,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:43" (1/1) ... [2021-02-23 19:00:43,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:43" (1/1) ... [2021-02-23 19:00:43,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:43" (1/1) ... [2021-02-23 19:00:43,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:43" (1/1) ... [2021-02-23 19:00:43,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 19:00:43,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 19:00:43,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 19:00:43,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 19:00:43,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:43" (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 [2021-02-23 19:00:43,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 19:00:43,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 19:00:43,484 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 19:00:43,485 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 19:00:43,485 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 19:00:43,485 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 19:00:43,485 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 19:00:43,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 19:00:43,486 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2021-02-23 19:00:43,486 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-02-23 19:00:43,486 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 19:00:43,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 19:00:43,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 19:00:43,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 19:00:43,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 19:00:43,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 19:00:43,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 19:00:43,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 19:00:43,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 19:00:43,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 19:00:44,842 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 19:00:44,842 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 19:00:44,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:00:44 BoogieIcfgContainer [2021-02-23 19:00:44,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 19:00:44,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 19:00:44,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 19:00:44,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 19:00:44,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 07:00:42" (1/3) ... [2021-02-23 19:00:44,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d1e8219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:00:44, skipping insertion in model container [2021-02-23 19:00:44,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:43" (2/3) ... [2021-02-23 19:00:44,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d1e8219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:00:44, skipping insertion in model container [2021-02-23 19:00:44,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:00:44" (3/3) ... [2021-02-23 19:00:44,860 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lhb-reducer.c [2021-02-23 19:00:44,868 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 19:00:44,874 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 19:00:44,897 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 19:00:44,926 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 19:00:44,926 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 19:00:44,927 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 19:00:44,927 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 19:00:44,927 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 19:00:44,927 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 19:00:44,927 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 19:00:44,928 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 19:00:44,965 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states. [2021-02-23 19:00:45,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2021-02-23 19:00:45,010 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:00:45,012 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:00:45,015 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:00:45,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:00:45,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1567792989, now seen corresponding path program 1 times [2021-02-23 19:00:45,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:00:45,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659638258] [2021-02-23 19:00:45,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:00:45,167 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:00:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:00:46,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:46,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:00:46,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:46,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:00:46,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:46,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:00:46,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:46,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:00:46,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:46,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:00:46,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:46,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:00:46,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:46,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:00:46,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:46,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:00:46,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:46,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:00:46,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:46,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:00:46,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:46,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:00:46,628 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 19:00:46,630 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 19:00:46,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:46,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:00:46,888 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-02-23 19:00:46,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:00:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:00:46,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:46,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:00:47,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:00:47,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659638258] [2021-02-23 19:00:47,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:00:47,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 19:00:47,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196118151] [2021-02-23 19:00:47,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 19:00:47,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:00:47,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 19:00:47,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-02-23 19:00:47,518 INFO L87 Difference]: Start difference. First operand 731 states. Second operand 14 states. [2021-02-23 19:00:47,839 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-02-23 19:00:50,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:00:50,393 INFO L93 Difference]: Finished difference Result 811 states and 855 transitions. [2021-02-23 19:00:50,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 19:00:50,395 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 493 [2021-02-23 19:00:50,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:00:50,417 INFO L225 Difference]: With dead ends: 811 [2021-02-23 19:00:50,417 INFO L226 Difference]: Without dead ends: 537 [2021-02-23 19:00:50,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2021-02-23 19:00:50,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-02-23 19:00:50,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 517. [2021-02-23 19:00:50,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2021-02-23 19:00:50,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 517 transitions. [2021-02-23 19:00:50,563 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 517 transitions. Word has length 493 [2021-02-23 19:00:50,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:00:50,566 INFO L480 AbstractCegarLoop]: Abstraction has 517 states and 517 transitions. [2021-02-23 19:00:50,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 19:00:50,566 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 517 transitions. [2021-02-23 19:00:50,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2021-02-23 19:00:50,579 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:00:50,580 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:00:50,581 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 19:00:50,581 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:00:50,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:00:50,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1030040449, now seen corresponding path program 1 times [2021-02-23 19:00:50,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:00:50,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448767697] [2021-02-23 19:00:50,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:00:53,208 WARN L202 SmtUtils]: Spent 2.60 s on a formula simplification. DAG size of input: 154 DAG size of output: 135 [2021-02-23 19:00:53,232 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 19:00:53,235 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:00:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:00:53,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:53,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:00:53,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:53,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:00:53,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:53,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:00:53,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:53,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:00:53,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:53,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:00:53,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:53,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:00:53,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:53,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:00:53,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:53,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:00:53,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:53,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:00:53,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:53,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:00:53,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:53,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:00:53,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:53,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:00:53,791 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 19:00:53,793 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 19:00:53,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:53,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:00:54,079 WARN L202 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-02-23 19:00:54,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:00:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:00:54,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:54,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:00:54,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:00:54,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448767697] [2021-02-23 19:00:54,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:00:54,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-23 19:00:54,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729372159] [2021-02-23 19:00:54,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 19:00:54,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:00:54,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 19:00:54,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-02-23 19:00:54,667 INFO L87 Difference]: Start difference. First operand 517 states and 517 transitions. Second operand 15 states. [2021-02-23 19:00:54,949 WARN L202 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-02-23 19:00:56,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:00:56,994 INFO L93 Difference]: Finished difference Result 568 states and 568 transitions. [2021-02-23 19:00:56,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 19:00:56,994 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 516 [2021-02-23 19:00:56,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:00:57,000 INFO L225 Difference]: With dead ends: 568 [2021-02-23 19:00:57,001 INFO L226 Difference]: Without dead ends: 560 [2021-02-23 19:00:57,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2021-02-23 19:00:57,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-02-23 19:00:57,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 540. [2021-02-23 19:00:57,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2021-02-23 19:00:57,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 540 transitions. [2021-02-23 19:00:57,121 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 540 transitions. Word has length 516 [2021-02-23 19:00:57,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:00:57,123 INFO L480 AbstractCegarLoop]: Abstraction has 540 states and 540 transitions. [2021-02-23 19:00:57,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 19:00:57,124 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 540 transitions. [2021-02-23 19:00:57,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2021-02-23 19:00:57,136 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:00:57,137 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:00:57,138 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 19:00:57,138 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:00:57,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:00:57,139 INFO L82 PathProgramCache]: Analyzing trace with hash 678611235, now seen corresponding path program 2 times [2021-02-23 19:00:57,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:00:57,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997557911] [2021-02-23 19:00:57,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:01:05,050 WARN L202 SmtUtils]: Spent 7.89 s on a formula simplification. DAG size of input: 235 DAG size of output: 230 [2021-02-23 19:01:07,492 WARN L202 SmtUtils]: Spent 2.42 s on a formula simplification. DAG size of input: 154 DAG size of output: 120 [2021-02-23 19:01:07,501 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 19:01:07,508 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:01:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:01:07,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:01:07,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:01:07,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:01:07,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:01:07,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:01:07,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:01:07,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:01:07,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:01:07,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:01:07,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:01:07,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:01:07,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:01:07,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:01:07,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:01:07,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:01:07,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:01:07,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:01:07,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:01:07,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:01:07,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:01:08,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:01:08,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:01:08,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:01:08,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:01:08,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:01:08,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:01:08,072 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 19:01:08,074 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 19:01:08,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:01:08,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:01:08,291 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-02-23 19:01:08,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:01:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:01:08,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:01:08,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:01:08,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:01:08,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997557911] [2021-02-23 19:01:08,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:01:08,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-23 19:01:08,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927050069] [2021-02-23 19:01:08,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 19:01:08,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:01:08,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 19:01:08,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-23 19:01:08,720 INFO L87 Difference]: Start difference. First operand 540 states and 540 transitions. Second operand 16 states. [2021-02-23 19:01:08,989 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-02-23 19:01:11,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:01:11,284 INFO L93 Difference]: Finished difference Result 591 states and 591 transitions. [2021-02-23 19:01:11,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-23 19:01:11,285 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 539 [2021-02-23 19:01:11,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:01:11,290 INFO L225 Difference]: With dead ends: 591 [2021-02-23 19:01:11,291 INFO L226 Difference]: Without dead ends: 583 [2021-02-23 19:01:11,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2021-02-23 19:01:11,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-02-23 19:01:11,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 563. [2021-02-23 19:01:11,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2021-02-23 19:01:11,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 563 transitions. [2021-02-23 19:01:11,352 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 563 transitions. Word has length 539 [2021-02-23 19:01:11,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:01:11,353 INFO L480 AbstractCegarLoop]: Abstraction has 563 states and 563 transitions. [2021-02-23 19:01:11,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 19:01:11,353 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 563 transitions. [2021-02-23 19:01:11,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2021-02-23 19:01:11,367 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:01:11,368 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:01:11,368 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 19:01:11,368 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:01:11,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:01:11,369 INFO L82 PathProgramCache]: Analyzing trace with hash 233298943, now seen corresponding path program 3 times [2021-02-23 19:01:11,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:01:11,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488442393] [2021-02-23 19:01:11,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:03:02,965 WARN L202 SmtUtils]: Spent 1.86 m on a formula simplification. DAG size of input: 1483 DAG size of output: 1478 [2021-02-23 19:03:05,848 WARN L202 SmtUtils]: Spent 2.84 s on a formula simplification. DAG size of input: 154 DAG size of output: 137 [2021-02-23 19:03:05,852 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 19:03:05,854 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:03:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:03:06,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:06,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:03:06,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:06,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:03:06,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:06,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:03:06,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:06,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:03:06,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:06,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:03:06,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:06,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:03:06,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:06,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:03:06,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:06,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:03:06,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:06,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:03:06,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:06,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:03:06,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:06,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:03:06,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:06,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:03:06,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:06,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:03:06,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:06,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:03:06,380 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 19:03:06,382 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 19:03:06,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:06,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:03:06,653 WARN L202 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-02-23 19:03:06,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:03:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:03:06,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:03:06,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:03:07,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:03:07,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488442393] [2021-02-23 19:03:07,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:03:07,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-23 19:03:07,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535313246] [2021-02-23 19:03:07,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-23 19:03:07,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:03:07,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-23 19:03:07,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-02-23 19:03:07,179 INFO L87 Difference]: Start difference. First operand 563 states and 563 transitions. Second operand 17 states. [2021-02-23 19:03:07,497 WARN L202 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-02-23 19:03:10,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:03:10,564 INFO L93 Difference]: Finished difference Result 614 states and 614 transitions. [2021-02-23 19:03:10,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-23 19:03:10,565 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 562 [2021-02-23 19:03:10,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:03:10,573 INFO L225 Difference]: With dead ends: 614 [2021-02-23 19:03:10,573 INFO L226 Difference]: Without dead ends: 606 [2021-02-23 19:03:10,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2021-02-23 19:03:10,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-02-23 19:03:10,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 586. [2021-02-23 19:03:10,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2021-02-23 19:03:10,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 586 transitions. [2021-02-23 19:03:10,641 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 586 transitions. Word has length 562 [2021-02-23 19:03:10,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:03:10,643 INFO L480 AbstractCegarLoop]: Abstraction has 586 states and 586 transitions. [2021-02-23 19:03:10,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-23 19:03:10,643 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 586 transitions. [2021-02-23 19:03:10,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2021-02-23 19:03:10,650 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:03:10,650 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:03:10,651 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 19:03:10,651 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:03:10,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:03:10,652 INFO L82 PathProgramCache]: Analyzing trace with hash -2110434909, now seen corresponding path program 4 times [2021-02-23 19:03:10,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:03:10,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638988409] [2021-02-23 19:03:10,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:08:12,112 WARN L202 SmtUtils]: Spent 5.02 m on a formula simplification. DAG size of input: 3499 DAG size of output: 3494 [2021-02-23 19:08:15,922 WARN L202 SmtUtils]: Spent 3.70 s on a formula simplification. DAG size of input: 154 DAG size of output: 144 [2021-02-23 19:08:15,926 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 19:08:15,931 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:08:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:08:16,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:16,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:08:16,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:16,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:08:16,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:16,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:16,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:16,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:16,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:16,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:16,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:16,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:16,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:16,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:16,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:16,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:16,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:16,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:16,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:16,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:16,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:16,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:16,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:16,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:16,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:16,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:16,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:16,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:16,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:16,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:16,756 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 19:08:16,768 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 19:08:16,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:16,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:08:17,142 WARN L202 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-02-23 19:08:17,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:08:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:08:17,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:17,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:08:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:08:17,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638988409] [2021-02-23 19:08:17,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:08:17,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-02-23 19:08:17,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324676638] [2021-02-23 19:08:17,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-23 19:08:17,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:08:17,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-23 19:08:17,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-02-23 19:08:17,688 INFO L87 Difference]: Start difference. First operand 586 states and 586 transitions. Second operand 18 states. [2021-02-23 19:08:18,091 WARN L202 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-02-23 19:08:22,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:08:22,586 INFO L93 Difference]: Finished difference Result 637 states and 637 transitions. [2021-02-23 19:08:22,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 19:08:22,588 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 585 [2021-02-23 19:08:22,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:08:22,594 INFO L225 Difference]: With dead ends: 637 [2021-02-23 19:08:22,594 INFO L226 Difference]: Without dead ends: 629 [2021-02-23 19:08:22,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2021-02-23 19:08:22,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-02-23 19:08:22,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 609. [2021-02-23 19:08:22,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2021-02-23 19:08:22,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 609 transitions. [2021-02-23 19:08:22,678 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 609 transitions. Word has length 585 [2021-02-23 19:08:22,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:08:22,680 INFO L480 AbstractCegarLoop]: Abstraction has 609 states and 609 transitions. [2021-02-23 19:08:22,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-23 19:08:22,680 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 609 transitions. [2021-02-23 19:08:22,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2021-02-23 19:08:22,687 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:08:22,687 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:08:22,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 19:08:22,688 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:08:22,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:08:22,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1366047873, now seen corresponding path program 5 times [2021-02-23 19:08:22,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:08:22,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10467947] [2021-02-23 19:08:22,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:08:35,695 WARN L202 SmtUtils]: Spent 12.99 s on a formula simplification. DAG size of input: 235 DAG size of output: 230 [2021-02-23 19:08:39,335 WARN L202 SmtUtils]: Spent 3.63 s on a formula simplification. DAG size of input: 154 DAG size of output: 120 [2021-02-23 19:08:39,339 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 19:08:39,342 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:08:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:08:39,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:39,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:08:39,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:39,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:08:39,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:39,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:39,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:39,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:39,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:39,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:39,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:39,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:39,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:39,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:39,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:39,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:39,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:39,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:39,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:39,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:40,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:40,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:40,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:40,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:40,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:40,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:40,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:40,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:40,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:40,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:40,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:40,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:08:40,294 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 19:08:40,296 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 19:08:40,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:40,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:08:40,682 WARN L202 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-02-23 19:08:40,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:08:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:08:40,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:08:40,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:08:41,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:08:41,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10467947] [2021-02-23 19:08:41,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:08:41,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-23 19:08:41,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368524930] [2021-02-23 19:08:41,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-23 19:08:41,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:08:41,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-23 19:08:41,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2021-02-23 19:08:41,114 INFO L87 Difference]: Start difference. First operand 609 states and 609 transitions. Second operand 19 states. [2021-02-23 19:08:41,504 WARN L202 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-02-23 19:08:46,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:08:46,643 INFO L93 Difference]: Finished difference Result 660 states and 660 transitions. [2021-02-23 19:08:46,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-23 19:08:46,644 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 608 [2021-02-23 19:08:46,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:08:46,651 INFO L225 Difference]: With dead ends: 660 [2021-02-23 19:08:46,651 INFO L226 Difference]: Without dead ends: 652 [2021-02-23 19:08:46,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=99, Invalid=1091, Unknown=0, NotChecked=0, Total=1190 [2021-02-23 19:08:46,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-02-23 19:08:46,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 632. [2021-02-23 19:08:46,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 632 states. [2021-02-23 19:08:46,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 632 transitions. [2021-02-23 19:08:46,726 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 632 transitions. Word has length 608 [2021-02-23 19:08:46,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:08:46,727 INFO L480 AbstractCegarLoop]: Abstraction has 632 states and 632 transitions. [2021-02-23 19:08:46,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-23 19:08:46,728 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 632 transitions. [2021-02-23 19:08:46,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2021-02-23 19:08:46,736 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:08:46,738 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:08:46,738 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 19:08:46,739 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:08:46,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:08:46,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1176700381, now seen corresponding path program 6 times [2021-02-23 19:08:46,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:08:46,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80689235] [2021-02-23 19:08:46,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:09:00,327 WARN L202 SmtUtils]: Spent 13.57 s on a formula simplification. DAG size of input: 235 DAG size of output: 230 [2021-02-23 19:09:04,275 WARN L202 SmtUtils]: Spent 3.94 s on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2021-02-23 19:09:04,279 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 19:09:04,285 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:09:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:09:04,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:09:04,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:09:04,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:09:04,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:09:04,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:09:04,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:09:04,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:09:04,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:09:04,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:09:04,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:09:04,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:09:04,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:09:04,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:09:04,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:09:04,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:09:04,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:09:04,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:09:04,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:09:04,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:09:04,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:09:04,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:09:04,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:09:04,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:09:04,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:09:04,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:09:04,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:09:05,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:09:05,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:09:05,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:09:05,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:09:05,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:09:05,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:09:05,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:09:05,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:09:05,240 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 19:09:05,243 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 19:09:05,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:09:05,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:09:05,635 WARN L202 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-02-23 19:09:05,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:09:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:09:05,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:09:05,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:09:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:09:06,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80689235] [2021-02-23 19:09:06,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:09:06,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-02-23 19:09:06,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149806592] [2021-02-23 19:09:06,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-23 19:09:06,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:09:06,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-23 19:09:06,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2021-02-23 19:09:06,080 INFO L87 Difference]: Start difference. First operand 632 states and 632 transitions. Second operand 20 states. [2021-02-23 19:09:06,533 WARN L202 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-02-23 19:09:12,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:09:12,066 INFO L93 Difference]: Finished difference Result 683 states and 683 transitions. [2021-02-23 19:09:12,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-23 19:09:12,068 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 631 [2021-02-23 19:09:12,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:09:12,073 INFO L225 Difference]: With dead ends: 683 [2021-02-23 19:09:12,074 INFO L226 Difference]: Without dead ends: 675 [2021-02-23 19:09:12,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2021-02-23 19:09:12,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-02-23 19:09:12,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 655. [2021-02-23 19:09:12,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2021-02-23 19:09:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 655 transitions. [2021-02-23 19:09:12,146 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 655 transitions. Word has length 631 [2021-02-23 19:09:12,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:09:12,148 INFO L480 AbstractCegarLoop]: Abstraction has 655 states and 655 transitions. [2021-02-23 19:09:12,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-23 19:09:12,148 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 655 transitions. [2021-02-23 19:09:12,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2021-02-23 19:09:12,155 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:09:12,156 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:09:12,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 19:09:12,157 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:09:12,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:09:12,158 INFO L82 PathProgramCache]: Analyzing trace with hash -778663169, now seen corresponding path program 7 times [2021-02-23 19:09:12,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:09:12,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384821713] [2021-02-23 19:09:12,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:10:05,423 WARN L202 SmtUtils]: Spent 53.25 s on a formula simplification. DAG size of input: 797 DAG size of output: 792 [2021-02-23 19:10:08,674 WARN L202 SmtUtils]: Spent 3.23 s on a formula simplification. DAG size of input: 154 DAG size of output: 142 [2021-02-23 19:10:08,677 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 19:10:08,679 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:10:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:10:08,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:10:08,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:10:08,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:10:08,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:10:09,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:10:09,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:10:09,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:10:09,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:10:09,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:10:09,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:10:09,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:10:09,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:10:09,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:10:09,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:10:09,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:10:09,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:10:09,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:10:09,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:10:09,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:10:09,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:10:09,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:10:09,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:10:09,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:10:09,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:10:09,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:10:09,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:10:09,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:10:09,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:10:09,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:10:09,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:10:09,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:10:09,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:10:09,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:10:09,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:10:09,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:10:09,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:10:09,353 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 19:10:09,354 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 19:10:09,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:10:09,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:10:09,642 WARN L202 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-02-23 19:10:09,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:10:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:10:09,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:10:09,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:10:10,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 19:10:10,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384821713] [2021-02-23 19:10:10,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:10:10,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-02-23 19:10:10,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668437982] [2021-02-23 19:10:10,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-23 19:10:10,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:10:10,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-23 19:10:10,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2021-02-23 19:10:10,249 INFO L87 Difference]: Start difference. First operand 655 states and 655 transitions. Second operand 21 states. [2021-02-23 19:10:10,590 WARN L202 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-02-23 19:10:14,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:10:14,589 INFO L93 Difference]: Finished difference Result 706 states and 706 transitions. [2021-02-23 19:10:14,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-23 19:10:14,590 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 654 [2021-02-23 19:10:14,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:10:14,593 INFO L225 Difference]: With dead ends: 706 [2021-02-23 19:10:14,593 INFO L226 Difference]: Without dead ends: 698 [2021-02-23 19:10:14,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2021-02-23 19:10:14,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2021-02-23 19:10:14,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 678. [2021-02-23 19:10:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2021-02-23 19:10:14,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 678 transitions. [2021-02-23 19:10:14,663 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 678 transitions. Word has length 654 [2021-02-23 19:10:14,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:10:14,664 INFO L480 AbstractCegarLoop]: Abstraction has 678 states and 678 transitions. [2021-02-23 19:10:14,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-23 19:10:14,664 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 678 transitions. [2021-02-23 19:10:14,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2021-02-23 19:10:14,671 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:10:14,672 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 19:10:14,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 19:10:14,672 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:10:14,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:10:14,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1955478877, now seen corresponding path program 8 times [2021-02-23 19:10:14,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:10:14,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345210991] [2021-02-23 19:10:14,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY