/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+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 19:00:15,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 19:00:15,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 19:00:15,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 19:00:15,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 19:00:15,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 19:00:15,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 19:00:15,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 19:00:15,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 19:00:15,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 19:00:15,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 19:00:15,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 19:00:15,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 19:00:15,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 19:00:15,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 19:00:15,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 19:00:15,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 19:00:15,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 19:00:15,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 19:00:15,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 19:00:15,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 19:00:15,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 19:00:15,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 19:00:15,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 19:00:15,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 19:00:15,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 19:00:15,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 19:00:15,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 19:00:15,451 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 19:00:15,469 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 19:00:15,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 19:00:15,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 19:00:15,472 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 19:00:15,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 19:00:15,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 19:00:15,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 19:00:15,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 19:00:15,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 19:00:15,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 19:00:15,473 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 19:00:15,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 19:00:15,474 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 19:00:15,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 19:00:15,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 19:00:15,475 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 19:00:15,475 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 19:00:15,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 19:00:15,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 19:00:15,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 19:00:15,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 19:00:15,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 19:00:15,476 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 19:00:15,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 19:00:15,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 19:00:15,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 19:00:15,889 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 19:00:15,890 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 19:00:15,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2021-02-23 19:00:15,996 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f355bb151/9a537f455bef44bdb488da01de1b9c59/FLAGaf3e1574f [2021-02-23 19:00:16,677 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 19:00:16,678 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2021-02-23 19:00:16,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f355bb151/9a537f455bef44bdb488da01de1b9c59/FLAGaf3e1574f [2021-02-23 19:00:17,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f355bb151/9a537f455bef44bdb488da01de1b9c59 [2021-02-23 19:00:17,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 19:00:17,035 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 19:00:17,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 19:00:17,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 19:00:17,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 19:00:17,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:00:17" (1/1) ... [2021-02-23 19:00:17,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c0cca52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:17, skipping insertion in model container [2021-02-23 19:00:17,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 07:00:17" (1/1) ... [2021-02-23 19:00:17,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 19:00:17,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 19:00:17,477 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+cfa-reducer.c[7920,7933] [2021-02-23 19:00:17,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 19:00:17,501 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 19:00:17,592 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+cfa-reducer.c[7920,7933] [2021-02-23 19:00:17,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 19:00:17,627 INFO L208 MainTranslator]: Completed translation [2021-02-23 19:00:17,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:17 WrapperNode [2021-02-23 19:00:17,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 19:00:17,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 19:00:17,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 19:00:17,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 19:00:17,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:17" (1/1) ... [2021-02-23 19:00:17,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:17" (1/1) ... [2021-02-23 19:00:17,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:17" (1/1) ... [2021-02-23 19:00:17,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:17" (1/1) ... [2021-02-23 19:00:17,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:17" (1/1) ... [2021-02-23 19:00:17,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:17" (1/1) ... [2021-02-23 19:00:17,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:17" (1/1) ... [2021-02-23 19:00:17,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 19:00:17,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 19:00:17,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 19:00:17,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 19:00:17,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:17" (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 19:00:17,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 19:00:17,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 19:00:17,858 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 19:00:17,858 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 19:00:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 19:00:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 19:00:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 19:00:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 19:00:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2021-02-23 19:00:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-02-23 19:00:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 19:00:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 19:00:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 19:00:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 19:00:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 19:00:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 19:00:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 19:00:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 19:00:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 19:00:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 19:00:19,024 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 19:00:19,024 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 19:00:19,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:00:19 BoogieIcfgContainer [2021-02-23 19:00:19,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 19:00:19,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 19:00:19,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 19:00:19,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 19:00:19,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 07:00:17" (1/3) ... [2021-02-23 19:00:19,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb45f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:00:19, skipping insertion in model container [2021-02-23 19:00:19,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 07:00:17" (2/3) ... [2021-02-23 19:00:19,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb45f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 07:00:19, skipping insertion in model container [2021-02-23 19:00:19,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 07:00:19" (3/3) ... [2021-02-23 19:00:19,039 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+cfa-reducer.c [2021-02-23 19:00:19,047 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 19:00:19,054 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 19:00:19,075 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 19:00:19,101 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 19:00:19,102 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 19:00:19,102 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 19:00:19,102 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 19:00:19,102 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 19:00:19,102 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 19:00:19,103 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 19:00:19,103 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 19:00:19,131 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states. [2021-02-23 19:00:19,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-02-23 19:00:19,158 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:00:19,160 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] [2021-02-23 19:00:19,160 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:00:19,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:00:19,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1953402615, now seen corresponding path program 1 times [2021-02-23 19:00:19,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:00:19,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534086094] [2021-02-23 19:00:19,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:00:19,260 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:00:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:00:19,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:19,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:00:19,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:19,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:00:19,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:19,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:00:19,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:19,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:00:19,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:19,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:00:19,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:00:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:00:19,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:19,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:00:20,068 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 19:00:20,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534086094] [2021-02-23 19:00:20,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:00:20,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 19:00:20,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404833919] [2021-02-23 19:00:20,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 19:00:20,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:00:20,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 19:00:20,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:00:20,098 INFO L87 Difference]: Start difference. First operand 353 states. Second operand 6 states. [2021-02-23 19:00:20,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:00:20,914 INFO L93 Difference]: Finished difference Result 391 states and 398 transitions. [2021-02-23 19:00:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 19:00:20,916 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 322 [2021-02-23 19:00:20,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:00:20,934 INFO L225 Difference]: With dead ends: 391 [2021-02-23 19:00:20,934 INFO L226 Difference]: Without dead ends: 354 [2021-02-23 19:00:20,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-02-23 19:00:20,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-02-23 19:00:21,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 335. [2021-02-23 19:00:21,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2021-02-23 19:00:21,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 336 transitions. [2021-02-23 19:00:21,025 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 336 transitions. Word has length 322 [2021-02-23 19:00:21,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:00:21,027 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 336 transitions. [2021-02-23 19:00:21,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 19:00:21,027 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 336 transitions. [2021-02-23 19:00:21,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-02-23 19:00:21,035 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:00:21,035 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] [2021-02-23 19:00:21,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 19:00:21,036 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:00:21,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:00:21,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1577928009, now seen corresponding path program 1 times [2021-02-23 19:00:21,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:00:21,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939028274] [2021-02-23 19:00:21,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:00:21,042 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:00:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:00:21,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:21,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:00:21,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:21,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:00:21,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:21,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:00:21,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:21,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:00:21,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:00:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:00:21,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:21,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:00:21,711 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 19:00:21,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939028274] [2021-02-23 19:00:21,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:00:21,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 19:00:21,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295935381] [2021-02-23 19:00:21,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 19:00:21,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:00:21,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 19:00:21,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 19:00:21,716 INFO L87 Difference]: Start difference. First operand 335 states and 336 transitions. Second operand 5 states. [2021-02-23 19:00:22,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:00:22,525 INFO L93 Difference]: Finished difference Result 379 states and 382 transitions. [2021-02-23 19:00:22,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 19:00:22,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2021-02-23 19:00:22,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:00:22,530 INFO L225 Difference]: With dead ends: 379 [2021-02-23 19:00:22,531 INFO L226 Difference]: Without dead ends: 354 [2021-02-23 19:00:22,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-23 19:00:22,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-02-23 19:00:22,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 340. [2021-02-23 19:00:22,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2021-02-23 19:00:22,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 341 transitions. [2021-02-23 19:00:22,586 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 341 transitions. Word has length 322 [2021-02-23 19:00:22,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:00:22,589 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 341 transitions. [2021-02-23 19:00:22,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 19:00:22,589 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 341 transitions. [2021-02-23 19:00:22,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-02-23 19:00:22,605 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:00:22,605 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 19:00:22,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 19:00:22,606 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:00:22,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:00:22,607 INFO L82 PathProgramCache]: Analyzing trace with hash -971732799, now seen corresponding path program 1 times [2021-02-23 19:00:22,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:00:22,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744305778] [2021-02-23 19:00:22,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:00:23,930 WARN L202 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 134 DAG size of output: 120 [2021-02-23 19:00:23,952 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 19:00:23,954 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 19:00:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:00:24,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:24,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:00:24,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:24,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 19:00:24,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:24,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 19:00:24,175 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 19:00:24,176 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 19:00:24,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:24,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:00:24,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 19:00:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 19:00:24,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 19:00:24,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 19:00:24,373 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 19:00:24,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744305778] [2021-02-23 19:00:24,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 19:00:24,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 19:00:24,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517758393] [2021-02-23 19:00:24,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 19:00:24,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 19:00:24,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 19:00:24,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 19:00:24,379 INFO L87 Difference]: Start difference. First operand 340 states and 341 transitions. Second operand 6 states. [2021-02-23 19:00:25,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 19:00:25,175 INFO L93 Difference]: Finished difference Result 396 states and 399 transitions. [2021-02-23 19:00:25,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 19:00:25,175 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 339 [2021-02-23 19:00:25,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 19:00:25,178 INFO L225 Difference]: With dead ends: 396 [2021-02-23 19:00:25,179 INFO L226 Difference]: Without dead ends: 371 [2021-02-23 19:00:25,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-23 19:00:25,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-02-23 19:00:25,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 357. [2021-02-23 19:00:25,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2021-02-23 19:00:25,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 358 transitions. [2021-02-23 19:00:25,226 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 358 transitions. Word has length 339 [2021-02-23 19:00:25,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 19:00:25,227 INFO L480 AbstractCegarLoop]: Abstraction has 357 states and 358 transitions. [2021-02-23 19:00:25,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 19:00:25,227 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 358 transitions. [2021-02-23 19:00:25,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-02-23 19:00:25,233 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 19:00:25,234 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-02-23 19:00:25,234 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 19:00:25,234 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 19:00:25,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 19:00:25,235 INFO L82 PathProgramCache]: Analyzing trace with hash -545414071, now seen corresponding path program 2 times [2021-02-23 19:00:25,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 19:00:25,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692045005] [2021-02-23 19:00:25,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 19:00:26,584 WARN L202 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 134 DAG size of output: 115