/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/product-lines/email_spec11_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:21:48,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:21:48,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:21:48,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:21:48,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:21:48,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:21:48,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:21:48,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:21:48,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:21:48,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:21:48,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:21:48,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:21:48,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:21:48,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:21:48,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:21:48,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:21:48,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:21:48,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:21:48,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:21:48,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:21:48,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:21:48,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:21:48,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:21:48,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:21:48,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 06:21:48,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 06:21:48,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 06:21:48,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 06:21:48,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 06:21:48,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 06:21:48,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:21:48,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:21:48,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:21:48,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:21:48,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:21:48,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:21:48,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:21:48,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:21:48,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:21:48,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:21:48,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:21:48,296 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:21:48,324 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:21:48,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:21:48,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:21:48,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:21:48,327 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:21:48,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:21:48,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:21:48,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:21:48,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:21:48,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:21:48,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:21:48,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:21:48,329 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:21:48,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:21:48,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:21:48,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:21:48,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:21:48,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:21:48,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:21:48,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:21:48,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:21:48,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:21:48,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:21:48,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:21:48,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:21:48,332 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:21:48,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:21:48,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:21:48,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:21:48,770 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:21:48,771 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:21:48,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec11_product32.cil.c [2020-12-22 06:21:48,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab7c37957/187b10d6719c48dd8e496e51aa30e5e4/FLAGd11523048 [2020-12-22 06:21:49,652 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:21:49,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec11_product32.cil.c [2020-12-22 06:21:49,676 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab7c37957/187b10d6719c48dd8e496e51aa30e5e4/FLAGd11523048 [2020-12-22 06:21:49,856 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab7c37957/187b10d6719c48dd8e496e51aa30e5e4 [2020-12-22 06:21:49,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:21:49,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:21:49,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:21:49,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:21:49,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:21:49,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:21:49" (1/1) ... [2020-12-22 06:21:49,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4314a05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:49, skipping insertion in model container [2020-12-22 06:21:49,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:21:49" (1/1) ... [2020-12-22 06:21:49,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:21:50,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:21:50,675 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec11_product32.cil.c[45652,45665] [2020-12-22 06:21:50,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:21:50,902 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:21:51,049 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec11_product32.cil.c[45652,45665] [2020-12-22 06:21:51,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:21:51,202 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:21:51,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:51 WrapperNode [2020-12-22 06:21:51,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:21:51,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:21:51,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:21:51,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:21:51,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:51" (1/1) ... [2020-12-22 06:21:51,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:51" (1/1) ... [2020-12-22 06:21:51,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:21:51,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:21:51,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:21:51,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:21:51,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:51" (1/1) ... [2020-12-22 06:21:51,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:51" (1/1) ... [2020-12-22 06:21:51,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:51" (1/1) ... [2020-12-22 06:21:51,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:51" (1/1) ... [2020-12-22 06:21:51,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:51" (1/1) ... [2020-12-22 06:21:51,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:51" (1/1) ... [2020-12-22 06:21:51,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:51" (1/1) ... [2020-12-22 06:21:51,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:21:51,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:21:51,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:21:51,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:21:51,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:21:51,869 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-12-22 06:21:51,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:21:51,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:21:51,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:21:51,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:21:55,426 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:21:55,426 INFO L299 CfgBuilder]: Removed 693 assume(true) statements. [2020-12-22 06:21:55,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:21:55 BoogieIcfgContainer [2020-12-22 06:21:55,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:21:55,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:21:55,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:21:55,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:21:55,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:21:49" (1/3) ... [2020-12-22 06:21:55,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49483da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:21:55, skipping insertion in model container [2020-12-22 06:21:55,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:21:51" (2/3) ... [2020-12-22 06:21:55,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49483da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:21:55, skipping insertion in model container [2020-12-22 06:21:55,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:21:55" (3/3) ... [2020-12-22 06:21:55,446 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product32.cil.c [2020-12-22 06:21:55,453 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:21:55,459 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 06:21:55,478 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 06:21:55,514 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:21:55,514 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:21:55,514 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:21:55,514 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:21:55,514 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:21:55,514 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:21:55,515 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:21:55,515 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:21:55,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states. [2020-12-22 06:21:55,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 06:21:55,570 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:55,571 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] [2020-12-22 06:21:55,571 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:21:55,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:55,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1125206193, now seen corresponding path program 1 times [2020-12-22 06:21:55,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:55,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206887059] [2020-12-22 06:21:55,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:56,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:21:56,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206887059] [2020-12-22 06:21:56,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:56,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:56,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676387313] [2020-12-22 06:21:56,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:56,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:56,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:56,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:56,124 INFO L87 Difference]: Start difference. First operand 1068 states. Second operand 3 states. [2020-12-22 06:21:56,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:56,328 INFO L93 Difference]: Finished difference Result 3169 states and 5510 transitions. [2020-12-22 06:21:56,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:56,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 06:21:56,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:56,371 INFO L225 Difference]: With dead ends: 3169 [2020-12-22 06:21:56,372 INFO L226 Difference]: Without dead ends: 2080 [2020-12-22 06:21:56,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:56,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2020-12-22 06:21:56,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 1049. [2020-12-22 06:21:56,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1049 states. [2020-12-22 06:21:56,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1813 transitions. [2020-12-22 06:21:56,537 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1813 transitions. Word has length 65 [2020-12-22 06:21:56,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:56,538 INFO L481 AbstractCegarLoop]: Abstraction has 1049 states and 1813 transitions. [2020-12-22 06:21:56,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:56,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1813 transitions. [2020-12-22 06:21:56,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 06:21:56,543 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:56,543 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] [2020-12-22 06:21:56,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:21:56,544 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:21:56,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:56,545 INFO L82 PathProgramCache]: Analyzing trace with hash -857686479, now seen corresponding path program 1 times [2020-12-22 06:21:56,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:56,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441429885] [2020-12-22 06:21:56,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:56,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:56,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:21:56,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441429885] [2020-12-22 06:21:56,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:56,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:21:56,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459951741] [2020-12-22 06:21:56,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:21:56,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:56,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:21:56,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:21:56,779 INFO L87 Difference]: Start difference. First operand 1049 states and 1813 transitions. Second operand 5 states. [2020-12-22 06:21:57,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:57,083 INFO L93 Difference]: Finished difference Result 3096 states and 5355 transitions. [2020-12-22 06:21:57,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:21:57,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-22 06:21:57,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:57,097 INFO L225 Difference]: With dead ends: 3096 [2020-12-22 06:21:57,098 INFO L226 Difference]: Without dead ends: 2066 [2020-12-22 06:21:57,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:21:57,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2020-12-22 06:21:57,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 1049. [2020-12-22 06:21:57,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1049 states. [2020-12-22 06:21:57,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1812 transitions. [2020-12-22 06:21:57,154 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1812 transitions. Word has length 67 [2020-12-22 06:21:57,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:57,155 INFO L481 AbstractCegarLoop]: Abstraction has 1049 states and 1812 transitions. [2020-12-22 06:21:57,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:21:57,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1812 transitions. [2020-12-22 06:21:57,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:21:57,158 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:57,158 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] [2020-12-22 06:21:57,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:21:57,159 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:21:57,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:57,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1225845700, now seen corresponding path program 1 times [2020-12-22 06:21:57,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:57,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775241053] [2020-12-22 06:21:57,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:21:57,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775241053] [2020-12-22 06:21:57,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:57,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:57,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968505136] [2020-12-22 06:21:57,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:57,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:57,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:57,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:57,300 INFO L87 Difference]: Start difference. First operand 1049 states and 1812 transitions. Second operand 3 states. [2020-12-22 06:21:57,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:57,387 INFO L93 Difference]: Finished difference Result 2080 states and 3598 transitions. [2020-12-22 06:21:57,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:57,388 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-22 06:21:57,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:57,394 INFO L225 Difference]: With dead ends: 2080 [2020-12-22 06:21:57,394 INFO L226 Difference]: Without dead ends: 1054 [2020-12-22 06:21:57,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:57,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2020-12-22 06:21:57,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1049. [2020-12-22 06:21:57,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1049 states. [2020-12-22 06:21:57,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1811 transitions. [2020-12-22 06:21:57,451 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1811 transitions. Word has length 68 [2020-12-22 06:21:57,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:57,459 INFO L481 AbstractCegarLoop]: Abstraction has 1049 states and 1811 transitions. [2020-12-22 06:21:57,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:57,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1811 transitions. [2020-12-22 06:21:57,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:21:57,462 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:57,462 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] [2020-12-22 06:21:57,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:21:57,463 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:21:57,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:57,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1539859774, now seen corresponding path program 1 times [2020-12-22 06:21:57,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:57,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481724811] [2020-12-22 06:21:57,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:57,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:21:57,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481724811] [2020-12-22 06:21:57,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:57,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:57,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747762001] [2020-12-22 06:21:57,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:57,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:57,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:57,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:57,612 INFO L87 Difference]: Start difference. First operand 1049 states and 1811 transitions. Second operand 3 states. [2020-12-22 06:21:57,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:57,692 INFO L93 Difference]: Finished difference Result 2090 states and 3611 transitions. [2020-12-22 06:21:57,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:57,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 06:21:57,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:57,700 INFO L225 Difference]: With dead ends: 2090 [2020-12-22 06:21:57,701 INFO L226 Difference]: Without dead ends: 1049 [2020-12-22 06:21:57,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:57,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2020-12-22 06:21:57,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1049. [2020-12-22 06:21:57,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1049 states. [2020-12-22 06:21:57,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1809 transitions. [2020-12-22 06:21:57,751 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1809 transitions. Word has length 69 [2020-12-22 06:21:57,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:57,751 INFO L481 AbstractCegarLoop]: Abstraction has 1049 states and 1809 transitions. [2020-12-22 06:21:57,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:57,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1809 transitions. [2020-12-22 06:21:57,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 06:21:57,754 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:57,754 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] [2020-12-22 06:21:57,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:21:57,755 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:21:57,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:57,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1646629513, now seen corresponding path program 1 times [2020-12-22 06:21:57,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:57,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927964770] [2020-12-22 06:21:57,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:57,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:21:57,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927964770] [2020-12-22 06:21:57,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:57,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:21:57,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457437237] [2020-12-22 06:21:57,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:21:57,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:57,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:21:57,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:21:57,874 INFO L87 Difference]: Start difference. First operand 1049 states and 1809 transitions. Second operand 5 states. [2020-12-22 06:21:58,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:58,174 INFO L93 Difference]: Finished difference Result 3086 states and 5335 transitions. [2020-12-22 06:21:58,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:21:58,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-12-22 06:21:58,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:58,187 INFO L225 Difference]: With dead ends: 3086 [2020-12-22 06:21:58,188 INFO L226 Difference]: Without dead ends: 2064 [2020-12-22 06:21:58,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:21:58,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2064 states. [2020-12-22 06:21:58,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2064 to 1049. [2020-12-22 06:21:58,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1049 states. [2020-12-22 06:21:58,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1808 transitions. [2020-12-22 06:21:58,259 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1808 transitions. Word has length 70 [2020-12-22 06:21:58,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:58,260 INFO L481 AbstractCegarLoop]: Abstraction has 1049 states and 1808 transitions. [2020-12-22 06:21:58,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:21:58,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1808 transitions. [2020-12-22 06:21:58,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:21:58,262 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:58,262 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] [2020-12-22 06:21:58,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:21:58,262 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:21:58,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:58,263 INFO L82 PathProgramCache]: Analyzing trace with hash 2039075590, now seen corresponding path program 1 times [2020-12-22 06:21:58,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:58,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937141263] [2020-12-22 06:21:58,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:58,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:21:58,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937141263] [2020-12-22 06:21:58,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:58,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:21:58,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808560038] [2020-12-22 06:21:58,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:21:58,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:58,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:21:58,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:21:58,418 INFO L87 Difference]: Start difference. First operand 1049 states and 1808 transitions. Second operand 5 states. [2020-12-22 06:21:58,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:58,663 INFO L93 Difference]: Finished difference Result 3091 states and 5340 transitions. [2020-12-22 06:21:58,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:21:58,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-12-22 06:21:58,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:58,676 INFO L225 Difference]: With dead ends: 3091 [2020-12-22 06:21:58,676 INFO L226 Difference]: Without dead ends: 2069 [2020-12-22 06:21:58,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:21:58,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2020-12-22 06:21:58,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1049. [2020-12-22 06:21:58,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1049 states. [2020-12-22 06:21:58,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1807 transitions. [2020-12-22 06:21:58,746 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1807 transitions. Word has length 71 [2020-12-22 06:21:58,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:58,747 INFO L481 AbstractCegarLoop]: Abstraction has 1049 states and 1807 transitions. [2020-12-22 06:21:58,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:21:58,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1807 transitions. [2020-12-22 06:21:58,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 06:21:58,748 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:58,749 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] [2020-12-22 06:21:58,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:21:58,749 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:21:58,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:58,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1603979538, now seen corresponding path program 1 times [2020-12-22 06:21:58,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:58,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902805905] [2020-12-22 06:21:58,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:58,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:21:58,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902805905] [2020-12-22 06:21:58,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:58,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:58,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895714419] [2020-12-22 06:21:58,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:58,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:58,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:58,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:58,821 INFO L87 Difference]: Start difference. First operand 1049 states and 1807 transitions. Second operand 3 states. [2020-12-22 06:21:58,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:58,887 INFO L93 Difference]: Finished difference Result 1817 states and 3108 transitions. [2020-12-22 06:21:58,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:58,888 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-22 06:21:58,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:58,894 INFO L225 Difference]: With dead ends: 1817 [2020-12-22 06:21:58,895 INFO L226 Difference]: Without dead ends: 1052 [2020-12-22 06:21:58,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:58,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-12-22 06:21:58,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1051. [2020-12-22 06:21:58,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2020-12-22 06:21:58,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1809 transitions. [2020-12-22 06:21:58,959 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1809 transitions. Word has length 72 [2020-12-22 06:21:58,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:58,959 INFO L481 AbstractCegarLoop]: Abstraction has 1051 states and 1809 transitions. [2020-12-22 06:21:58,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:58,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1809 transitions. [2020-12-22 06:21:58,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 06:21:58,961 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:58,962 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 06:21:58,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:21:58,962 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:21:58,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:58,963 INFO L82 PathProgramCache]: Analyzing trace with hash -94904896, now seen corresponding path program 1 times [2020-12-22 06:21:58,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:58,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024046043] [2020-12-22 06:21:58,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:59,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:21:59,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024046043] [2020-12-22 06:21:59,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:59,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:59,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672896147] [2020-12-22 06:21:59,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:59,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:59,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:59,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:59,104 INFO L87 Difference]: Start difference. First operand 1051 states and 1809 transitions. Second operand 3 states. [2020-12-22 06:21:59,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:59,250 INFO L93 Difference]: Finished difference Result 3039 states and 5251 transitions. [2020-12-22 06:21:59,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:59,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 06:21:59,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:59,263 INFO L225 Difference]: With dead ends: 3039 [2020-12-22 06:21:59,263 INFO L226 Difference]: Without dead ends: 2019 [2020-12-22 06:21:59,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:59,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-12-22 06:21:59,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 1254. [2020-12-22 06:21:59,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1254 states. [2020-12-22 06:21:59,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 2184 transitions. [2020-12-22 06:21:59,366 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 2184 transitions. Word has length 80 [2020-12-22 06:21:59,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:59,368 INFO L481 AbstractCegarLoop]: Abstraction has 1254 states and 2184 transitions. [2020-12-22 06:21:59,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:59,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 2184 transitions. [2020-12-22 06:21:59,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 06:21:59,370 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:59,371 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 06:21:59,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:21:59,371 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:21:59,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:59,372 INFO L82 PathProgramCache]: Analyzing trace with hash 943791041, now seen corresponding path program 1 times [2020-12-22 06:21:59,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:59,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512152028] [2020-12-22 06:21:59,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:21:59,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512152028] [2020-12-22 06:21:59,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:59,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:21:59,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611629722] [2020-12-22 06:21:59,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:21:59,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:59,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:21:59,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:21:59,514 INFO L87 Difference]: Start difference. First operand 1254 states and 2184 transitions. Second operand 5 states. [2020-12-22 06:21:59,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:59,884 INFO L93 Difference]: Finished difference Result 3692 states and 6458 transitions. [2020-12-22 06:21:59,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:21:59,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-12-22 06:21:59,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:59,899 INFO L225 Difference]: With dead ends: 3692 [2020-12-22 06:21:59,899 INFO L226 Difference]: Without dead ends: 2469 [2020-12-22 06:21:59,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:21:59,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2020-12-22 06:21:59,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 1254. [2020-12-22 06:21:59,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1254 states. [2020-12-22 06:22:00,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 2182 transitions. [2020-12-22 06:22:00,003 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 2182 transitions. Word has length 81 [2020-12-22 06:22:00,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:00,004 INFO L481 AbstractCegarLoop]: Abstraction has 1254 states and 2182 transitions. [2020-12-22 06:22:00,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:22:00,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 2182 transitions. [2020-12-22 06:22:00,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:22:00,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:00,006 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 06:22:00,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:22:00,006 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:00,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:00,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1271534902, now seen corresponding path program 1 times [2020-12-22 06:22:00,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:00,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383634934] [2020-12-22 06:22:00,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:00,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:22:00,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383634934] [2020-12-22 06:22:00,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:00,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:22:00,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218181399] [2020-12-22 06:22:00,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:22:00,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:00,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:22:00,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:00,090 INFO L87 Difference]: Start difference. First operand 1254 states and 2182 transitions. Second operand 3 states. [2020-12-22 06:22:00,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:00,282 INFO L93 Difference]: Finished difference Result 3690 states and 6450 transitions. [2020-12-22 06:22:00,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:22:00,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 06:22:00,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:00,296 INFO L225 Difference]: With dead ends: 3690 [2020-12-22 06:22:00,296 INFO L226 Difference]: Without dead ends: 2467 [2020-12-22 06:22:00,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:00,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2020-12-22 06:22:00,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 1702. [2020-12-22 06:22:00,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1702 states. [2020-12-22 06:22:00,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 3009 transitions. [2020-12-22 06:22:00,407 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 3009 transitions. Word has length 82 [2020-12-22 06:22:00,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:00,408 INFO L481 AbstractCegarLoop]: Abstraction has 1702 states and 3009 transitions. [2020-12-22 06:22:00,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:22:00,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 3009 transitions. [2020-12-22 06:22:00,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:22:00,411 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:00,411 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 06:22:00,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:22:00,411 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:00,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:00,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1917764844, now seen corresponding path program 1 times [2020-12-22 06:22:00,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:00,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950037936] [2020-12-22 06:22:00,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:00,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:22:00,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950037936] [2020-12-22 06:22:00,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000516969] [2020-12-22 06:22:00,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 06:22:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:00,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 06:22:00,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:22:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:22:01,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 06:22:01,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 06:22:01,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413782738] [2020-12-22 06:22:01,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:22:01,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:01,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:22:01,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:22:01,147 INFO L87 Difference]: Start difference. First operand 1702 states and 3009 transitions. Second operand 5 states. [2020-12-22 06:22:01,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:01,415 INFO L93 Difference]: Finished difference Result 3494 states and 6081 transitions. [2020-12-22 06:22:01,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:22:01,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-12-22 06:22:01,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:01,432 INFO L225 Difference]: With dead ends: 3494 [2020-12-22 06:22:01,433 INFO L226 Difference]: Without dead ends: 2729 [2020-12-22 06:22:01,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:22:01,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2020-12-22 06:22:01,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 1961. [2020-12-22 06:22:01,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1961 states. [2020-12-22 06:22:01,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 3481 transitions. [2020-12-22 06:22:01,653 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 3481 transitions. Word has length 82 [2020-12-22 06:22:01,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:01,653 INFO L481 AbstractCegarLoop]: Abstraction has 1961 states and 3481 transitions. [2020-12-22 06:22:01,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:22:01,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 3481 transitions. [2020-12-22 06:22:01,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 06:22:01,657 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:01,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:22:01,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 06:22:01,872 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:01,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:01,873 INFO L82 PathProgramCache]: Analyzing trace with hash -462600625, now seen corresponding path program 1 times [2020-12-22 06:22:01,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:01,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907626401] [2020-12-22 06:22:01,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:01,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:22:01,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907626401] [2020-12-22 06:22:01,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:01,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:22:01,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580178482] [2020-12-22 06:22:01,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:22:01,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:01,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:22:01,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:01,956 INFO L87 Difference]: Start difference. First operand 1961 states and 3481 transitions. Second operand 3 states. [2020-12-22 06:22:02,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:02,159 INFO L93 Difference]: Finished difference Result 5474 states and 9735 transitions. [2020-12-22 06:22:02,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:22:02,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-22 06:22:02,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:02,196 INFO L225 Difference]: With dead ends: 5474 [2020-12-22 06:22:02,197 INFO L226 Difference]: Without dead ends: 3614 [2020-12-22 06:22:02,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:02,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3614 states. [2020-12-22 06:22:02,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3614 to 2849. [2020-12-22 06:22:02,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2849 states. [2020-12-22 06:22:02,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 5114 transitions. [2020-12-22 06:22:02,390 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 5114 transitions. Word has length 86 [2020-12-22 06:22:02,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:02,392 INFO L481 AbstractCegarLoop]: Abstraction has 2849 states and 5114 transitions. [2020-12-22 06:22:02,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:22:02,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 5114 transitions. [2020-12-22 06:22:02,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 06:22:02,402 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:02,402 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] [2020-12-22 06:22:02,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:22:02,402 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:02,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:02,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1674598607, now seen corresponding path program 1 times [2020-12-22 06:22:02,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:02,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508228991] [2020-12-22 06:22:02,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:02,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:22:02,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508228991] [2020-12-22 06:22:02,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:02,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:22:02,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581239407] [2020-12-22 06:22:02,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:22:02,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:02,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:22:02,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:02,505 INFO L87 Difference]: Start difference. First operand 2849 states and 5114 transitions. Second operand 3 states. [2020-12-22 06:22:02,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:02,903 INFO L93 Difference]: Finished difference Result 7874 states and 14153 transitions. [2020-12-22 06:22:02,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:22:02,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-12-22 06:22:02,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:02,922 INFO L225 Difference]: With dead ends: 7874 [2020-12-22 06:22:02,922 INFO L226 Difference]: Without dead ends: 5160 [2020-12-22 06:22:02,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:02,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5160 states. [2020-12-22 06:22:03,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5160 to 4395. [2020-12-22 06:22:03,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4395 states. [2020-12-22 06:22:03,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4395 states to 4395 states and 7955 transitions. [2020-12-22 06:22:03,229 INFO L78 Accepts]: Start accepts. Automaton has 4395 states and 7955 transitions. Word has length 87 [2020-12-22 06:22:03,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:03,229 INFO L481 AbstractCegarLoop]: Abstraction has 4395 states and 7955 transitions. [2020-12-22 06:22:03,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:22:03,229 INFO L276 IsEmpty]: Start isEmpty. Operand 4395 states and 7955 transitions. [2020-12-22 06:22:03,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 06:22:03,239 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:03,239 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] [2020-12-22 06:22:03,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:22:03,239 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:03,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:03,240 INFO L82 PathProgramCache]: Analyzing trace with hash -997839682, now seen corresponding path program 1 times [2020-12-22 06:22:03,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:03,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607432278] [2020-12-22 06:22:03,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:03,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:22:03,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607432278] [2020-12-22 06:22:03,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:03,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:22:03,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524869877] [2020-12-22 06:22:03,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:22:03,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:03,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:22:03,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:03,329 INFO L87 Difference]: Start difference. First operand 4395 states and 7955 transitions. Second operand 3 states. [2020-12-22 06:22:03,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:03,801 INFO L93 Difference]: Finished difference Result 12228 states and 22159 transitions. [2020-12-22 06:22:03,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:22:03,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-12-22 06:22:03,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:03,827 INFO L225 Difference]: With dead ends: 12228 [2020-12-22 06:22:03,828 INFO L226 Difference]: Without dead ends: 8002 [2020-12-22 06:22:03,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:03,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8002 states. [2020-12-22 06:22:04,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8002 to 7237. [2020-12-22 06:22:04,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7237 states. [2020-12-22 06:22:04,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7237 states to 7237 states and 13172 transitions. [2020-12-22 06:22:04,371 INFO L78 Accepts]: Start accepts. Automaton has 7237 states and 13172 transitions. Word has length 88 [2020-12-22 06:22:04,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:04,372 INFO L481 AbstractCegarLoop]: Abstraction has 7237 states and 13172 transitions. [2020-12-22 06:22:04,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:22:04,372 INFO L276 IsEmpty]: Start isEmpty. Operand 7237 states and 13172 transitions. [2020-12-22 06:22:04,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 06:22:04,386 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:04,386 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] [2020-12-22 06:22:04,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:22:04,386 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:04,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:04,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1023552606, now seen corresponding path program 1 times [2020-12-22 06:22:04,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:04,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499707845] [2020-12-22 06:22:04,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:04,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:22:04,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499707845] [2020-12-22 06:22:04,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:04,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:22:04,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896120957] [2020-12-22 06:22:04,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:22:04,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:04,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:22:04,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:04,466 INFO L87 Difference]: Start difference. First operand 7237 states and 13172 transitions. Second operand 3 states. [2020-12-22 06:22:05,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:05,200 INFO L93 Difference]: Finished difference Result 21212 states and 38652 transitions. [2020-12-22 06:22:05,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:22:05,200 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-22 06:22:05,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:05,245 INFO L225 Difference]: With dead ends: 21212 [2020-12-22 06:22:05,245 INFO L226 Difference]: Without dead ends: 14148 [2020-12-22 06:22:05,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:05,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14148 states. [2020-12-22 06:22:06,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14148 to 13383. [2020-12-22 06:22:06,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13383 states. [2020-12-22 06:22:06,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13383 states to 13383 states and 24437 transitions. [2020-12-22 06:22:06,099 INFO L78 Accepts]: Start accepts. Automaton has 13383 states and 24437 transitions. Word has length 89 [2020-12-22 06:22:06,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:06,100 INFO L481 AbstractCegarLoop]: Abstraction has 13383 states and 24437 transitions. [2020-12-22 06:22:06,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:22:06,100 INFO L276 IsEmpty]: Start isEmpty. Operand 13383 states and 24437 transitions. [2020-12-22 06:22:06,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 06:22:06,123 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:06,123 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] [2020-12-22 06:22:06,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:22:06,124 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:06,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:06,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1048192721, now seen corresponding path program 1 times [2020-12-22 06:22:06,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:06,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281391001] [2020-12-22 06:22:06,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:06,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:22:06,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281391001] [2020-12-22 06:22:06,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:06,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:22:06,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459612403] [2020-12-22 06:22:06,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:22:06,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:06,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:22:06,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:06,213 INFO L87 Difference]: Start difference. First operand 13383 states and 24437 transitions. Second operand 3 states. [2020-12-22 06:22:07,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:07,408 INFO L93 Difference]: Finished difference Result 39352 states and 71922 transitions. [2020-12-22 06:22:07,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:22:07,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-22 06:22:07,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:07,502 INFO L225 Difference]: With dead ends: 39352 [2020-12-22 06:22:07,502 INFO L226 Difference]: Without dead ends: 26150 [2020-12-22 06:22:07,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:07,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26150 states. [2020-12-22 06:22:09,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26150 to 25385. [2020-12-22 06:22:09,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25385 states. [2020-12-22 06:22:09,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25385 states to 25385 states and 46422 transitions. [2020-12-22 06:22:09,392 INFO L78 Accepts]: Start accepts. Automaton has 25385 states and 46422 transitions. Word has length 90 [2020-12-22 06:22:09,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:09,392 INFO L481 AbstractCegarLoop]: Abstraction has 25385 states and 46422 transitions. [2020-12-22 06:22:09,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:22:09,393 INFO L276 IsEmpty]: Start isEmpty. Operand 25385 states and 46422 transitions. [2020-12-22 06:22:09,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 06:22:09,418 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:09,418 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] [2020-12-22 06:22:09,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:22:09,419 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:09,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:09,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1382534692, now seen corresponding path program 1 times [2020-12-22 06:22:09,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:09,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009432933] [2020-12-22 06:22:09,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:09,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:22:09,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009432933] [2020-12-22 06:22:09,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:09,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:22:09,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21069132] [2020-12-22 06:22:09,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:22:09,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:09,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:22:09,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:09,495 INFO L87 Difference]: Start difference. First operand 25385 states and 46422 transitions. Second operand 3 states. [2020-12-22 06:22:11,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:11,067 INFO L93 Difference]: Finished difference Result 69997 states and 127613 transitions. [2020-12-22 06:22:11,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:22:11,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 06:22:11,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:11,211 INFO L225 Difference]: With dead ends: 69997 [2020-12-22 06:22:11,211 INFO L226 Difference]: Without dead ends: 44840 [2020-12-22 06:22:11,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:11,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44840 states. [2020-12-22 06:22:13,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44840 to 44075. [2020-12-22 06:22:13,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44075 states. [2020-12-22 06:22:13,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44075 states to 44075 states and 80151 transitions. [2020-12-22 06:22:13,327 INFO L78 Accepts]: Start accepts. Automaton has 44075 states and 80151 transitions. Word has length 91 [2020-12-22 06:22:13,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:13,328 INFO L481 AbstractCegarLoop]: Abstraction has 44075 states and 80151 transitions. [2020-12-22 06:22:13,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:22:13,328 INFO L276 IsEmpty]: Start isEmpty. Operand 44075 states and 80151 transitions. [2020-12-22 06:22:13,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 06:22:13,352 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:13,353 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:22:13,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:22:13,353 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:13,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:13,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1472425144, now seen corresponding path program 1 times [2020-12-22 06:22:13,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:13,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093206823] [2020-12-22 06:22:13,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:13,436 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 06:22:13,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093206823] [2020-12-22 06:22:13,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:13,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:22:13,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884757685] [2020-12-22 06:22:13,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:22:13,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:13,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:22:13,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:22:13,439 INFO L87 Difference]: Start difference. First operand 44075 states and 80151 transitions. Second operand 5 states. [2020-12-22 06:22:16,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:16,582 INFO L93 Difference]: Finished difference Result 129842 states and 236102 transitions. [2020-12-22 06:22:16,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:22:16,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-12-22 06:22:16,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:17,013 INFO L225 Difference]: With dead ends: 129842 [2020-12-22 06:22:17,013 INFO L226 Difference]: Without dead ends: 86063 [2020-12-22 06:22:17,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:22:17,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86063 states. [2020-12-22 06:22:19,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86063 to 44075. [2020-12-22 06:22:19,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44075 states. [2020-12-22 06:22:19,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44075 states to 44075 states and 79893 transitions. [2020-12-22 06:22:19,683 INFO L78 Accepts]: Start accepts. Automaton has 44075 states and 79893 transitions. Word has length 92 [2020-12-22 06:22:19,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:19,683 INFO L481 AbstractCegarLoop]: Abstraction has 44075 states and 79893 transitions. [2020-12-22 06:22:19,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:22:19,684 INFO L276 IsEmpty]: Start isEmpty. Operand 44075 states and 79893 transitions. [2020-12-22 06:22:19,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 06:22:19,713 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:19,713 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 06:22:19,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:22:19,714 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:19,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:19,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1716874602, now seen corresponding path program 2 times [2020-12-22 06:22:19,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:19,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420595499] [2020-12-22 06:22:19,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:19,805 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:22:19,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420595499] [2020-12-22 06:22:19,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:19,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:22:19,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263240746] [2020-12-22 06:22:19,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:22:19,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:19,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:22:19,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:22:19,810 INFO L87 Difference]: Start difference. First operand 44075 states and 79893 transitions. Second operand 5 states. [2020-12-22 06:22:21,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:21,696 INFO L93 Difference]: Finished difference Result 88613 states and 160567 transitions. [2020-12-22 06:22:21,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:22:21,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-12-22 06:22:21,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:21,772 INFO L225 Difference]: With dead ends: 88613 [2020-12-22 06:22:21,772 INFO L226 Difference]: Without dead ends: 44840 [2020-12-22 06:22:21,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:22:21,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44840 states. [2020-12-22 06:22:23,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44840 to 44075. [2020-12-22 06:22:23,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44075 states. [2020-12-22 06:22:23,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44075 states to 44075 states and 79765 transitions. [2020-12-22 06:22:23,922 INFO L78 Accepts]: Start accepts. Automaton has 44075 states and 79765 transitions. Word has length 92 [2020-12-22 06:22:23,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:23,923 INFO L481 AbstractCegarLoop]: Abstraction has 44075 states and 79765 transitions. [2020-12-22 06:22:23,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:22:23,923 INFO L276 IsEmpty]: Start isEmpty. Operand 44075 states and 79765 transitions. [2020-12-22 06:22:23,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 06:22:23,940 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:23,940 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] [2020-12-22 06:22:23,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:22:23,940 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:23,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:23,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1263709981, now seen corresponding path program 1 times [2020-12-22 06:22:23,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:23,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036322291] [2020-12-22 06:22:23,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:24,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:22:24,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036322291] [2020-12-22 06:22:24,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:24,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:22:24,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226032957] [2020-12-22 06:22:24,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:22:24,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:24,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:22:24,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:24,204 INFO L87 Difference]: Start difference. First operand 44075 states and 79765 transitions. Second operand 3 states. [2020-12-22 06:22:27,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:27,262 INFO L93 Difference]: Finished difference Result 123727 states and 223745 transitions. [2020-12-22 06:22:27,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:22:27,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-22 06:22:27,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:27,433 INFO L225 Difference]: With dead ends: 123727 [2020-12-22 06:22:27,433 INFO L226 Difference]: Without dead ends: 79914 [2020-12-22 06:22:27,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:22:27,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79914 states. [2020-12-22 06:22:30,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79914 to 79149. [2020-12-22 06:22:30,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79149 states. [2020-12-22 06:22:31,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79149 states to 79149 states and 142870 transitions. [2020-12-22 06:22:31,076 INFO L78 Accepts]: Start accepts. Automaton has 79149 states and 142870 transitions. Word has length 92 [2020-12-22 06:22:31,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:31,077 INFO L481 AbstractCegarLoop]: Abstraction has 79149 states and 142870 transitions. [2020-12-22 06:22:31,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:22:31,077 INFO L276 IsEmpty]: Start isEmpty. Operand 79149 states and 142870 transitions. [2020-12-22 06:22:31,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 06:22:31,093 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:31,093 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:22:31,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:22:31,094 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:31,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:31,094 INFO L82 PathProgramCache]: Analyzing trace with hash -211032988, now seen corresponding path program 1 times [2020-12-22 06:22:31,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:31,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627059884] [2020-12-22 06:22:31,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:22:31,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627059884] [2020-12-22 06:22:31,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:31,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 06:22:31,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197273347] [2020-12-22 06:22:31,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 06:22:31,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:31,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 06:22:31,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:22:31,225 INFO L87 Difference]: Start difference. First operand 79149 states and 142870 transitions. Second operand 9 states. [2020-12-22 06:22:39,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:39,846 INFO L93 Difference]: Finished difference Result 163452 states and 294288 transitions. [2020-12-22 06:22:39,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 06:22:39,846 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-12-22 06:22:39,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:40,193 INFO L225 Difference]: With dead ends: 163452 [2020-12-22 06:22:40,194 INFO L226 Difference]: Without dead ends: 162755 [2020-12-22 06:22:40,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=182, Invalid=370, Unknown=0, NotChecked=0, Total=552 [2020-12-22 06:22:40,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162755 states. [2020-12-22 06:22:46,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162755 to 157885. [2020-12-22 06:22:46,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157885 states. [2020-12-22 06:22:47,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157885 states to 157885 states and 285048 transitions. [2020-12-22 06:22:47,518 INFO L78 Accepts]: Start accepts. Automaton has 157885 states and 285048 transitions. Word has length 93 [2020-12-22 06:22:47,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:22:47,518 INFO L481 AbstractCegarLoop]: Abstraction has 157885 states and 285048 transitions. [2020-12-22 06:22:47,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 06:22:47,518 INFO L276 IsEmpty]: Start isEmpty. Operand 157885 states and 285048 transitions. [2020-12-22 06:22:47,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 06:22:47,563 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:22:47,563 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:22:47,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:22:47,563 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:22:47,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:22:47,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1901297665, now seen corresponding path program 1 times [2020-12-22 06:22:47,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:22:47,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674864198] [2020-12-22 06:22:47,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:22:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:22:47,662 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:22:47,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674864198] [2020-12-22 06:22:47,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:22:47,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:22:47,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655158] [2020-12-22 06:22:47,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:22:47,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:22:47,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:22:47,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:22:47,665 INFO L87 Difference]: Start difference. First operand 157885 states and 285048 transitions. Second operand 4 states. [2020-12-22 06:22:56,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:22:56,532 INFO L93 Difference]: Finished difference Result 240659 states and 433975 transitions. [2020-12-22 06:22:56,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:22:56,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-12-22 06:22:56,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:22:57,305 INFO L225 Difference]: With dead ends: 240659 [2020-12-22 06:22:57,306 INFO L226 Difference]: Without dead ends: 239465 [2020-12-22 06:22:57,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:22:57,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239465 states. [2020-12-22 06:23:07,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239465 to 237307. [2020-12-22 06:23:07,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237307 states. [2020-12-22 06:23:08,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237307 states to 237307 states and 428387 transitions. [2020-12-22 06:23:08,652 INFO L78 Accepts]: Start accepts. Automaton has 237307 states and 428387 transitions. Word has length 94 [2020-12-22 06:23:08,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:23:08,654 INFO L481 AbstractCegarLoop]: Abstraction has 237307 states and 428387 transitions. [2020-12-22 06:23:08,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:23:08,654 INFO L276 IsEmpty]: Start isEmpty. Operand 237307 states and 428387 transitions. [2020-12-22 06:23:08,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 06:23:08,735 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:23:08,736 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:23:08,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:23:08,736 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:23:08,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:23:08,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1923929919, now seen corresponding path program 1 times [2020-12-22 06:23:08,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:23:08,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001451392] [2020-12-22 06:23:08,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:23:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:23:08,861 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:23:08,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001451392] [2020-12-22 06:23:08,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:23:08,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 06:23:08,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617127458] [2020-12-22 06:23:08,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 06:23:08,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:23:08,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 06:23:08,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:23:08,863 INFO L87 Difference]: Start difference. First operand 237307 states and 428387 transitions. Second operand 9 states. [2020-12-22 06:23:20,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:23:20,246 INFO L93 Difference]: Finished difference Result 249836 states and 449600 transitions. [2020-12-22 06:23:20,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 06:23:20,247 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-12-22 06:23:20,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:23:20,796 INFO L225 Difference]: With dead ends: 249836 [2020-12-22 06:23:20,796 INFO L226 Difference]: Without dead ends: 247690 [2020-12-22 06:23:20,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-12-22 06:23:21,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247690 states. [2020-12-22 06:23:31,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247690 to 238273. [2020-12-22 06:23:31,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238273 states. [2020-12-22 06:23:32,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238273 states to 238273 states and 430007 transitions. [2020-12-22 06:23:32,666 INFO L78 Accepts]: Start accepts. Automaton has 238273 states and 430007 transitions. Word has length 94 [2020-12-22 06:23:32,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:23:32,667 INFO L481 AbstractCegarLoop]: Abstraction has 238273 states and 430007 transitions. [2020-12-22 06:23:32,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 06:23:32,667 INFO L276 IsEmpty]: Start isEmpty. Operand 238273 states and 430007 transitions. [2020-12-22 06:23:32,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 06:23:32,730 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:23:32,730 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:23:32,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:23:32,730 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:23:32,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:23:32,731 INFO L82 PathProgramCache]: Analyzing trace with hash 176873636, now seen corresponding path program 1 times [2020-12-22 06:23:32,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:23:32,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59358057] [2020-12-22 06:23:32,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:23:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:23:32,827 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:23:32,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59358057] [2020-12-22 06:23:32,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:23:32,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:23:32,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366417603] [2020-12-22 06:23:32,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:23:32,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:23:32,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:23:32,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:23:32,829 INFO L87 Difference]: Start difference. First operand 238273 states and 430007 transitions. Second operand 5 states. [2020-12-22 06:23:43,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:23:43,692 INFO L93 Difference]: Finished difference Result 255593 states and 459213 transitions. [2020-12-22 06:23:43,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:23:43,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-12-22 06:23:43,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:23:44,884 INFO L225 Difference]: With dead ends: 255593 [2020-12-22 06:23:44,884 INFO L226 Difference]: Without dead ends: 252809 [2020-12-22 06:23:44,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:23:45,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252809 states. [2020-12-22 06:23:57,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252809 to 241629. [2020-12-22 06:23:57,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241629 states. [2020-12-22 06:23:58,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241629 states to 241629 states and 435550 transitions. [2020-12-22 06:23:58,853 INFO L78 Accepts]: Start accepts. Automaton has 241629 states and 435550 transitions. Word has length 95 [2020-12-22 06:23:58,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:23:58,853 INFO L481 AbstractCegarLoop]: Abstraction has 241629 states and 435550 transitions. [2020-12-22 06:23:58,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:23:58,853 INFO L276 IsEmpty]: Start isEmpty. Operand 241629 states and 435550 transitions. [2020-12-22 06:23:58,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 06:23:58,914 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:23:58,914 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:23:58,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:23:58,915 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:23:58,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:23:58,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1208825779, now seen corresponding path program 1 times [2020-12-22 06:23:58,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:23:58,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628803022] [2020-12-22 06:23:58,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:23:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:23:59,040 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:23:59,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628803022] [2020-12-22 06:23:59,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:23:59,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:23:59,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995698940] [2020-12-22 06:23:59,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:23:59,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:23:59,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:23:59,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:23:59,043 INFO L87 Difference]: Start difference. First operand 241629 states and 435550 transitions. Second operand 5 states. [2020-12-22 06:24:10,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:24:10,175 INFO L93 Difference]: Finished difference Result 262563 states and 470800 transitions. [2020-12-22 06:24:10,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:24:10,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-12-22 06:24:10,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:24:10,752 INFO L225 Difference]: With dead ends: 262563 [2020-12-22 06:24:10,752 INFO L226 Difference]: Without dead ends: 257463 [2020-12-22 06:24:10,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:24:11,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257463 states. [2020-12-22 06:24:21,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257463 to 241733. [2020-12-22 06:24:21,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241733 states. [2020-12-22 06:24:22,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241733 states to 241733 states and 435654 transitions. [2020-12-22 06:24:22,602 INFO L78 Accepts]: Start accepts. Automaton has 241733 states and 435654 transitions. Word has length 97 [2020-12-22 06:24:22,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:24:22,602 INFO L481 AbstractCegarLoop]: Abstraction has 241733 states and 435654 transitions. [2020-12-22 06:24:22,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:24:22,603 INFO L276 IsEmpty]: Start isEmpty. Operand 241733 states and 435654 transitions. [2020-12-22 06:24:22,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 06:24:22,649 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:24:22,649 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:24:22,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:24:22,650 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:24:22,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:24:22,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1086159474, now seen corresponding path program 1 times [2020-12-22 06:24:22,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:24:22,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4976600] [2020-12-22 06:24:22,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:24:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:24:22,810 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:24:22,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4976600] [2020-12-22 06:24:22,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:24:22,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 06:24:22,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384215300] [2020-12-22 06:24:22,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 06:24:22,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:24:22,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 06:24:22,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:24:22,813 INFO L87 Difference]: Start difference. First operand 241733 states and 435654 transitions. Second operand 11 states. [2020-12-22 06:24:33,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:24:33,244 INFO L93 Difference]: Finished difference Result 251815 states and 452380 transitions. [2020-12-22 06:24:33,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 06:24:33,244 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 97 [2020-12-22 06:24:33,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:24:33,992 INFO L225 Difference]: With dead ends: 251815 [2020-12-22 06:24:33,992 INFO L226 Difference]: Without dead ends: 245551 [2020-12-22 06:24:34,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=254, Invalid=616, Unknown=0, NotChecked=0, Total=870 [2020-12-22 06:24:34,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245551 states. [2020-12-22 06:24:44,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245551 to 241573. [2020-12-22 06:24:44,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241573 states. [2020-12-22 06:24:45,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241573 states to 241573 states and 435334 transitions. [2020-12-22 06:24:45,629 INFO L78 Accepts]: Start accepts. Automaton has 241573 states and 435334 transitions. Word has length 97 [2020-12-22 06:24:45,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:24:45,630 INFO L481 AbstractCegarLoop]: Abstraction has 241573 states and 435334 transitions. [2020-12-22 06:24:45,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 06:24:45,630 INFO L276 IsEmpty]: Start isEmpty. Operand 241573 states and 435334 transitions. [2020-12-22 06:24:45,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 06:24:45,707 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:24:45,708 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:24:45,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 06:24:45,708 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:24:45,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:24:45,709 INFO L82 PathProgramCache]: Analyzing trace with hash 168941387, now seen corresponding path program 1 times [2020-12-22 06:24:45,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:24:45,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68599633] [2020-12-22 06:24:45,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:24:45,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:24:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:24:45,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68599633] [2020-12-22 06:24:45,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:24:45,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:24:45,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52559680] [2020-12-22 06:24:45,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:24:45,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:24:45,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:24:45,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:24:45,786 INFO L87 Difference]: Start difference. First operand 241573 states and 435334 transitions. Second operand 4 states. [2020-12-22 06:24:58,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:24:58,060 INFO L93 Difference]: Finished difference Result 261147 states and 467234 transitions. [2020-12-22 06:24:58,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:24:58,060 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-12-22 06:24:58,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:24:58,766 INFO L225 Difference]: With dead ends: 261147 [2020-12-22 06:24:58,766 INFO L226 Difference]: Without dead ends: 254613 [2020-12-22 06:24:58,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:24:59,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254613 states. [2020-12-22 06:25:09,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254613 to 241673. [2020-12-22 06:25:09,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241673 states. [2020-12-22 06:25:10,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241673 states to 241673 states and 435434 transitions. [2020-12-22 06:25:10,633 INFO L78 Accepts]: Start accepts. Automaton has 241673 states and 435434 transitions. Word has length 98 [2020-12-22 06:25:10,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:25:10,634 INFO L481 AbstractCegarLoop]: Abstraction has 241673 states and 435434 transitions. [2020-12-22 06:25:10,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:25:10,634 INFO L276 IsEmpty]: Start isEmpty. Operand 241673 states and 435434 transitions. [2020-12-22 06:25:10,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 06:25:10,700 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:25:10,700 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:25:10,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 06:25:10,701 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:25:10,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:25:10,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1786649153, now seen corresponding path program 1 times [2020-12-22 06:25:10,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:25:10,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540946871] [2020-12-22 06:25:10,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:25:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:25:10,806 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:25:10,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540946871] [2020-12-22 06:25:10,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:25:10,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 06:25:10,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946056660] [2020-12-22 06:25:10,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 06:25:10,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:25:10,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 06:25:10,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:25:10,808 INFO L87 Difference]: Start difference. First operand 241673 states and 435434 transitions. Second operand 8 states. [2020-12-22 06:25:21,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:25:21,461 INFO L93 Difference]: Finished difference Result 252307 states and 452772 transitions. [2020-12-22 06:25:21,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 06:25:21,461 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-12-22 06:25:21,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted.