/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_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:19:55,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:19:55,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:19:55,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:19:55,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:19:55,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:19:55,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:19:55,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:19:55,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:19:55,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:19:55,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:19:55,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:19:55,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:19:55,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:19:55,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:19:55,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:19:55,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:19:55,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:19:55,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:19:55,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:19:55,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:19:55,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:19:55,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:19:55,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:19:55,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:19:55,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:19:55,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:19:55,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:19:55,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:19:55,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:19:55,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:19:55,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:19:55,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:19:55,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:19:55,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:19:55,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:19:55,452 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:19:55,478 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:19:55,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:19:55,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:19:55,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:19:55,480 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:19:55,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:19:55,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:19:55,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:19:55,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:19:55,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:19:55,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:19:55,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:19:55,481 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:19:55,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:19:55,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:19:55,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:19:55,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:19:55,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:19:55,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:19:55,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:19:55,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:19:55,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:19:55,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:19:55,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:19:55,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:19:55,503 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:19:55,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:19:55,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:19:55,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:19:55,941 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:19:55,942 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:19:55,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec11_product20.cil.c [2020-12-22 06:19:56,024 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c7d794d8/32189067091f49c392cc2e144d901322/FLAG45501743f [2020-12-22 06:19:56,804 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:19:56,805 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec11_product20.cil.c [2020-12-22 06:19:56,833 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c7d794d8/32189067091f49c392cc2e144d901322/FLAG45501743f [2020-12-22 06:19:56,953 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c7d794d8/32189067091f49c392cc2e144d901322 [2020-12-22 06:19:56,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:19:56,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:19:56,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:19:56,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:19:56,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:19:56,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:19:56" (1/1) ... [2020-12-22 06:19:56,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72ae9a4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:19:56, skipping insertion in model container [2020-12-22 06:19:56,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:19:56" (1/1) ... [2020-12-22 06:19:56,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:19:57,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:19:57,320 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_product20.cil.c[1219,1232] [2020-12-22 06:19:57,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:19:57,900 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:19:57,929 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_product20.cil.c[1219,1232] [2020-12-22 06:19:58,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:19:58,207 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:19:58,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:19:58 WrapperNode [2020-12-22 06:19:58,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:19:58,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:19:58,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:19:58,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:19:58,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:19:58" (1/1) ... [2020-12-22 06:19:58,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:19:58" (1/1) ... [2020-12-22 06:19:58,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:19:58,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:19:58,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:19:58,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:19:58,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:19:58" (1/1) ... [2020-12-22 06:19:58,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:19:58" (1/1) ... [2020-12-22 06:19:58,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:19:58" (1/1) ... [2020-12-22 06:19:58,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:19:58" (1/1) ... [2020-12-22 06:19:58,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:19:58" (1/1) ... [2020-12-22 06:19:58,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:19:58" (1/1) ... [2020-12-22 06:19:58,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:19:58" (1/1) ... [2020-12-22 06:19:58,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:19:58,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:19:58,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:19:58,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:19:58,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:19:58" (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 06:19:58,800 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-12-22 06:19:58,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:19:58,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:19:58,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:19:58,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:20:01,524 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:20:01,525 INFO L299 CfgBuilder]: Removed 541 assume(true) statements. [2020-12-22 06:20:01,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:20:01 BoogieIcfgContainer [2020-12-22 06:20:01,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:20:01,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:20:01,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:20:01,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:20:01,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:19:56" (1/3) ... [2020-12-22 06:20:01,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f93a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:20:01, skipping insertion in model container [2020-12-22 06:20:01,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:19:58" (2/3) ... [2020-12-22 06:20:01,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f93a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:20:01, skipping insertion in model container [2020-12-22 06:20:01,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:20:01" (3/3) ... [2020-12-22 06:20:01,537 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product20.cil.c [2020-12-22 06:20:01,544 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:20:01,550 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 06:20:01,569 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 06:20:01,602 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:20:01,602 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:20:01,603 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:20:01,603 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:20:01,603 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:20:01,603 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:20:01,603 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:20:01,603 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:20:01,642 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states. [2020-12-22 06:20:01,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:20:01,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:01,668 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] [2020-12-22 06:20:01,669 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 06:20:01,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:01,675 INFO L82 PathProgramCache]: Analyzing trace with hash -634054842, now seen corresponding path program 1 times [2020-12-22 06:20:01,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:01,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570358373] [2020-12-22 06:20:01,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:02,128 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 06:20:02,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570358373] [2020-12-22 06:20:02,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:02,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:02,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616687376] [2020-12-22 06:20:02,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:02,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:02,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:02,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:02,181 INFO L87 Difference]: Start difference. First operand 830 states. Second operand 3 states. [2020-12-22 06:20:02,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:02,403 INFO L93 Difference]: Finished difference Result 2455 states and 4280 transitions. [2020-12-22 06:20:02,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:02,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 06:20:02,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:02,442 INFO L225 Difference]: With dead ends: 2455 [2020-12-22 06:20:02,442 INFO L226 Difference]: Without dead ends: 1604 [2020-12-22 06:20:02,453 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 06:20:02,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2020-12-22 06:20:02,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 811. [2020-12-22 06:20:02,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2020-12-22 06:20:02,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1403 transitions. [2020-12-22 06:20:02,574 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1403 transitions. Word has length 55 [2020-12-22 06:20:02,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:02,575 INFO L481 AbstractCegarLoop]: Abstraction has 811 states and 1403 transitions. [2020-12-22 06:20:02,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:02,575 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1403 transitions. [2020-12-22 06:20:02,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 06:20:02,580 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:02,580 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] [2020-12-22 06:20:02,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:20:02,581 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 06:20:02,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:02,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1491734360, now seen corresponding path program 1 times [2020-12-22 06:20:02,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:02,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77203751] [2020-12-22 06:20:02,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:02,728 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 06:20:02,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77203751] [2020-12-22 06:20:02,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:02,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:20:02,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699824199] [2020-12-22 06:20:02,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:20:02,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:02,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:20:02,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:20:02,733 INFO L87 Difference]: Start difference. First operand 811 states and 1403 transitions. Second operand 5 states. [2020-12-22 06:20:02,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:02,953 INFO L93 Difference]: Finished difference Result 2382 states and 4125 transitions. [2020-12-22 06:20:02,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:20:02,954 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-12-22 06:20:02,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:02,964 INFO L225 Difference]: With dead ends: 2382 [2020-12-22 06:20:02,964 INFO L226 Difference]: Without dead ends: 1590 [2020-12-22 06:20:02,967 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 06:20:02,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2020-12-22 06:20:03,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 811. [2020-12-22 06:20:03,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2020-12-22 06:20:03,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1402 transitions. [2020-12-22 06:20:03,010 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1402 transitions. Word has length 57 [2020-12-22 06:20:03,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:03,011 INFO L481 AbstractCegarLoop]: Abstraction has 811 states and 1402 transitions. [2020-12-22 06:20:03,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:20:03,011 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1402 transitions. [2020-12-22 06:20:03,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 06:20:03,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:03,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:20:03,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:20:03,014 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 06:20:03,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:03,015 INFO L82 PathProgramCache]: Analyzing trace with hash -521967109, now seen corresponding path program 1 times [2020-12-22 06:20:03,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:03,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292296846] [2020-12-22 06:20:03,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:03,130 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 06:20:03,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292296846] [2020-12-22 06:20:03,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:03,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:03,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305159009] [2020-12-22 06:20:03,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:03,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:03,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:03,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:03,136 INFO L87 Difference]: Start difference. First operand 811 states and 1402 transitions. Second operand 3 states. [2020-12-22 06:20:03,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:03,236 INFO L93 Difference]: Finished difference Result 1604 states and 2778 transitions. [2020-12-22 06:20:03,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:03,237 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-12-22 06:20:03,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:03,242 INFO L225 Difference]: With dead ends: 1604 [2020-12-22 06:20:03,243 INFO L226 Difference]: Without dead ends: 816 [2020-12-22 06:20:03,246 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 06:20:03,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2020-12-22 06:20:03,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 811. [2020-12-22 06:20:03,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2020-12-22 06:20:03,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1401 transitions. [2020-12-22 06:20:03,293 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1401 transitions. Word has length 58 [2020-12-22 06:20:03,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:03,300 INFO L481 AbstractCegarLoop]: Abstraction has 811 states and 1401 transitions. [2020-12-22 06:20:03,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:03,300 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1401 transitions. [2020-12-22 06:20:03,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 06:20:03,302 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:03,302 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] [2020-12-22 06:20:03,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:20:03,303 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 06:20:03,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:03,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1537446901, now seen corresponding path program 1 times [2020-12-22 06:20:03,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:03,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879792669] [2020-12-22 06:20:03,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:03,447 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 06:20:03,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879792669] [2020-12-22 06:20:03,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:03,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:03,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233041377] [2020-12-22 06:20:03,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:03,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:03,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:03,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:03,452 INFO L87 Difference]: Start difference. First operand 811 states and 1401 transitions. Second operand 3 states. [2020-12-22 06:20:03,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:03,522 INFO L93 Difference]: Finished difference Result 1614 states and 2791 transitions. [2020-12-22 06:20:03,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:03,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-12-22 06:20:03,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:03,528 INFO L225 Difference]: With dead ends: 1614 [2020-12-22 06:20:03,528 INFO L226 Difference]: Without dead ends: 811 [2020-12-22 06:20:03,530 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 06:20:03,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-12-22 06:20:03,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 811. [2020-12-22 06:20:03,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2020-12-22 06:20:03,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1399 transitions. [2020-12-22 06:20:03,571 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1399 transitions. Word has length 59 [2020-12-22 06:20:03,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:03,573 INFO L481 AbstractCegarLoop]: Abstraction has 811 states and 1399 transitions. [2020-12-22 06:20:03,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:03,573 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1399 transitions. [2020-12-22 06:20:03,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:20:03,576 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:03,576 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] [2020-12-22 06:20:03,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:20:03,577 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 06:20:03,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:03,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1288711424, now seen corresponding path program 1 times [2020-12-22 06:20:03,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:03,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521981769] [2020-12-22 06:20:03,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:03,699 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 06:20:03,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521981769] [2020-12-22 06:20:03,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:03,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:20:03,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000983681] [2020-12-22 06:20:03,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:20:03,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:03,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:20:03,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:20:03,704 INFO L87 Difference]: Start difference. First operand 811 states and 1399 transitions. Second operand 5 states. [2020-12-22 06:20:03,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:03,955 INFO L93 Difference]: Finished difference Result 2372 states and 4105 transitions. [2020-12-22 06:20:03,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:20:03,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-12-22 06:20:03,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:03,966 INFO L225 Difference]: With dead ends: 2372 [2020-12-22 06:20:03,967 INFO L226 Difference]: Without dead ends: 1588 [2020-12-22 06:20:03,969 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 06:20:03,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2020-12-22 06:20:04,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 811. [2020-12-22 06:20:04,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2020-12-22 06:20:04,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1398 transitions. [2020-12-22 06:20:04,070 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1398 transitions. Word has length 60 [2020-12-22 06:20:04,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:04,070 INFO L481 AbstractCegarLoop]: Abstraction has 811 states and 1398 transitions. [2020-12-22 06:20:04,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:20:04,071 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1398 transitions. [2020-12-22 06:20:04,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:20:04,072 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:04,072 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] [2020-12-22 06:20:04,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:20:04,073 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 06:20:04,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:04,073 INFO L82 PathProgramCache]: Analyzing trace with hash 183901117, now seen corresponding path program 1 times [2020-12-22 06:20:04,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:04,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627343462] [2020-12-22 06:20:04,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:04,149 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 06:20:04,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627343462] [2020-12-22 06:20:04,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:04,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:20:04,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582027212] [2020-12-22 06:20:04,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:20:04,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:04,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:20:04,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:20:04,151 INFO L87 Difference]: Start difference. First operand 811 states and 1398 transitions. Second operand 5 states. [2020-12-22 06:20:04,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:04,356 INFO L93 Difference]: Finished difference Result 2377 states and 4110 transitions. [2020-12-22 06:20:04,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:20:04,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-12-22 06:20:04,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:04,366 INFO L225 Difference]: With dead ends: 2377 [2020-12-22 06:20:04,366 INFO L226 Difference]: Without dead ends: 1593 [2020-12-22 06:20:04,371 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 06:20:04,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2020-12-22 06:20:04,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 811. [2020-12-22 06:20:04,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2020-12-22 06:20:04,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1397 transitions. [2020-12-22 06:20:04,431 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1397 transitions. Word has length 61 [2020-12-22 06:20:04,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:04,432 INFO L481 AbstractCegarLoop]: Abstraction has 811 states and 1397 transitions. [2020-12-22 06:20:04,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:20:04,432 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1397 transitions. [2020-12-22 06:20:04,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 06:20:04,433 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:04,433 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] [2020-12-22 06:20:04,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:20:04,435 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 06:20:04,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:04,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1796850085, now seen corresponding path program 1 times [2020-12-22 06:20:04,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:04,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109700680] [2020-12-22 06:20:04,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:04,538 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 06:20:04,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109700680] [2020-12-22 06:20:04,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:04,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:04,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081967811] [2020-12-22 06:20:04,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:04,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:04,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:04,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:04,540 INFO L87 Difference]: Start difference. First operand 811 states and 1397 transitions. Second operand 3 states. [2020-12-22 06:20:04,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:04,596 INFO L93 Difference]: Finished difference Result 1341 states and 2288 transitions. [2020-12-22 06:20:04,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:04,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-22 06:20:04,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:04,601 INFO L225 Difference]: With dead ends: 1341 [2020-12-22 06:20:04,602 INFO L226 Difference]: Without dead ends: 814 [2020-12-22 06:20:04,603 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 06:20:04,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2020-12-22 06:20:04,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 813. [2020-12-22 06:20:04,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 813 states. [2020-12-22 06:20:04,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1399 transitions. [2020-12-22 06:20:04,651 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1399 transitions. Word has length 62 [2020-12-22 06:20:04,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:04,651 INFO L481 AbstractCegarLoop]: Abstraction has 813 states and 1399 transitions. [2020-12-22 06:20:04,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:04,651 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1399 transitions. [2020-12-22 06:20:04,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 06:20:04,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:04,653 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] [2020-12-22 06:20:04,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:20:04,653 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 06:20:04,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:04,654 INFO L82 PathProgramCache]: Analyzing trace with hash 978675447, now seen corresponding path program 1 times [2020-12-22 06:20:04,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:04,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115735893] [2020-12-22 06:20:04,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:04,743 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 06:20:04,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115735893] [2020-12-22 06:20:04,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:04,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:04,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678397045] [2020-12-22 06:20:04,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:04,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:04,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:04,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:04,746 INFO L87 Difference]: Start difference. First operand 813 states and 1399 transitions. Second operand 3 states. [2020-12-22 06:20:04,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:04,849 INFO L93 Difference]: Finished difference Result 2325 states and 4021 transitions. [2020-12-22 06:20:04,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:04,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-22 06:20:04,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:04,861 INFO L225 Difference]: With dead ends: 2325 [2020-12-22 06:20:04,861 INFO L226 Difference]: Without dead ends: 1543 [2020-12-22 06:20:04,863 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 06:20:04,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2020-12-22 06:20:04,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1016. [2020-12-22 06:20:04,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2020-12-22 06:20:04,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1774 transitions. [2020-12-22 06:20:04,936 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1774 transitions. Word has length 70 [2020-12-22 06:20:04,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:04,937 INFO L481 AbstractCegarLoop]: Abstraction has 1016 states and 1774 transitions. [2020-12-22 06:20:04,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:04,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1774 transitions. [2020-12-22 06:20:04,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:20:04,940 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:04,940 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] [2020-12-22 06:20:04,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:20:04,940 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 06:20:04,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:04,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1573715400, now seen corresponding path program 1 times [2020-12-22 06:20:04,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:04,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88832985] [2020-12-22 06:20:04,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:05,056 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 06:20:05,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88832985] [2020-12-22 06:20:05,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:05,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:20:05,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719040606] [2020-12-22 06:20:05,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:20:05,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:05,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:20:05,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:20:05,064 INFO L87 Difference]: Start difference. First operand 1016 states and 1774 transitions. Second operand 5 states. [2020-12-22 06:20:05,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:05,344 INFO L93 Difference]: Finished difference Result 2978 states and 5228 transitions. [2020-12-22 06:20:05,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:20:05,345 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-12-22 06:20:05,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:05,357 INFO L225 Difference]: With dead ends: 2978 [2020-12-22 06:20:05,358 INFO L226 Difference]: Without dead ends: 1993 [2020-12-22 06:20:05,360 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 06:20:05,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2020-12-22 06:20:05,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1016. [2020-12-22 06:20:05,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2020-12-22 06:20:05,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1772 transitions. [2020-12-22 06:20:05,472 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1772 transitions. Word has length 71 [2020-12-22 06:20:05,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:05,473 INFO L481 AbstractCegarLoop]: Abstraction has 1016 states and 1772 transitions. [2020-12-22 06:20:05,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:20:05,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1772 transitions. [2020-12-22 06:20:05,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 06:20:05,475 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:05,475 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] [2020-12-22 06:20:05,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:20:05,476 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 06:20:05,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:05,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1311004801, now seen corresponding path program 1 times [2020-12-22 06:20:05,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:05,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178684414] [2020-12-22 06:20:05,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:05,537 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 06:20:05,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178684414] [2020-12-22 06:20:05,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:05,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:05,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73416526] [2020-12-22 06:20:05,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:05,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:05,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:05,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:05,539 INFO L87 Difference]: Start difference. First operand 1016 states and 1772 transitions. Second operand 3 states. [2020-12-22 06:20:05,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:05,673 INFO L93 Difference]: Finished difference Result 2976 states and 5220 transitions. [2020-12-22 06:20:05,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:05,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-22 06:20:05,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:05,686 INFO L225 Difference]: With dead ends: 2976 [2020-12-22 06:20:05,686 INFO L226 Difference]: Without dead ends: 1991 [2020-12-22 06:20:05,689 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 06:20:05,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2020-12-22 06:20:05,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1464. [2020-12-22 06:20:05,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1464 states. [2020-12-22 06:20:05,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 2599 transitions. [2020-12-22 06:20:05,789 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 2599 transitions. Word has length 72 [2020-12-22 06:20:05,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:05,789 INFO L481 AbstractCegarLoop]: Abstraction has 1464 states and 2599 transitions. [2020-12-22 06:20:05,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:05,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 2599 transitions. [2020-12-22 06:20:05,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 06:20:05,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:05,792 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] [2020-12-22 06:20:05,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:20:05,793 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 06:20:05,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:05,793 INFO L82 PathProgramCache]: Analyzing trace with hash -658565853, now seen corresponding path program 1 times [2020-12-22 06:20:05,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:05,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597733078] [2020-12-22 06:20:05,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:05,868 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 06:20:05,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597733078] [2020-12-22 06:20:05,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100606603] [2020-12-22 06:20:05,869 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 06:20:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:06,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 06:20:06,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:20:06,360 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 06:20:06,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 06:20:06,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 06:20:06,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390228548] [2020-12-22 06:20:06,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:20:06,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:06,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:20:06,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:20:06,363 INFO L87 Difference]: Start difference. First operand 1464 states and 2599 transitions. Second operand 5 states. [2020-12-22 06:20:06,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:06,549 INFO L93 Difference]: Finished difference Result 2780 states and 4851 transitions. [2020-12-22 06:20:06,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:20:06,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-12-22 06:20:06,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:06,564 INFO L225 Difference]: With dead ends: 2780 [2020-12-22 06:20:06,565 INFO L226 Difference]: Without dead ends: 2253 [2020-12-22 06:20:06,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 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 06:20:06,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2020-12-22 06:20:06,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 1723. [2020-12-22 06:20:06,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1723 states. [2020-12-22 06:20:06,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 3071 transitions. [2020-12-22 06:20:06,698 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 3071 transitions. Word has length 72 [2020-12-22 06:20:06,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:06,698 INFO L481 AbstractCegarLoop]: Abstraction has 1723 states and 3071 transitions. [2020-12-22 06:20:06,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:20:06,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 3071 transitions. [2020-12-22 06:20:06,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 06:20:06,702 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:06,702 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] [2020-12-22 06:20:06,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 06:20:06,917 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 06:20:06,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:06,918 INFO L82 PathProgramCache]: Analyzing trace with hash -456497594, now seen corresponding path program 1 times [2020-12-22 06:20:06,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:06,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126616873] [2020-12-22 06:20:06,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:07,021 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 06:20:07,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126616873] [2020-12-22 06:20:07,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:07,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:07,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990284953] [2020-12-22 06:20:07,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:07,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:07,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:07,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:07,023 INFO L87 Difference]: Start difference. First operand 1723 states and 3071 transitions. Second operand 3 states. [2020-12-22 06:20:07,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:07,237 INFO L93 Difference]: Finished difference Result 4760 states and 8505 transitions. [2020-12-22 06:20:07,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:07,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-22 06:20:07,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:07,257 INFO L225 Difference]: With dead ends: 4760 [2020-12-22 06:20:07,257 INFO L226 Difference]: Without dead ends: 3138 [2020-12-22 06:20:07,261 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 06:20:07,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2020-12-22 06:20:07,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 2611. [2020-12-22 06:20:07,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2611 states. [2020-12-22 06:20:07,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 4704 transitions. [2020-12-22 06:20:07,441 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 4704 transitions. Word has length 76 [2020-12-22 06:20:07,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:07,442 INFO L481 AbstractCegarLoop]: Abstraction has 2611 states and 4704 transitions. [2020-12-22 06:20:07,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:07,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 4704 transitions. [2020-12-22 06:20:07,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 06:20:07,447 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:07,448 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] [2020-12-22 06:20:07,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:20:07,448 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 06:20:07,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:07,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1860868294, now seen corresponding path program 1 times [2020-12-22 06:20:07,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:07,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394342669] [2020-12-22 06:20:07,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:07,525 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 06:20:07,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394342669] [2020-12-22 06:20:07,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:07,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:07,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267786259] [2020-12-22 06:20:07,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:07,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:07,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:07,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:07,528 INFO L87 Difference]: Start difference. First operand 2611 states and 4704 transitions. Second operand 3 states. [2020-12-22 06:20:07,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:07,844 INFO L93 Difference]: Finished difference Result 7160 states and 12923 transitions. [2020-12-22 06:20:07,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:07,845 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 06:20:07,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:07,872 INFO L225 Difference]: With dead ends: 7160 [2020-12-22 06:20:07,873 INFO L226 Difference]: Without dead ends: 4684 [2020-12-22 06:20:07,878 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 06:20:07,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4684 states. [2020-12-22 06:20:08,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4684 to 4157. [2020-12-22 06:20:08,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4157 states. [2020-12-22 06:20:08,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4157 states to 4157 states and 7545 transitions. [2020-12-22 06:20:08,139 INFO L78 Accepts]: Start accepts. Automaton has 4157 states and 7545 transitions. Word has length 77 [2020-12-22 06:20:08,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:08,139 INFO L481 AbstractCegarLoop]: Abstraction has 4157 states and 7545 transitions. [2020-12-22 06:20:08,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:08,139 INFO L276 IsEmpty]: Start isEmpty. Operand 4157 states and 7545 transitions. [2020-12-22 06:20:08,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 06:20:08,147 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:08,147 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] [2020-12-22 06:20:08,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:20:08,148 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 06:20:08,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:08,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1442006155, now seen corresponding path program 1 times [2020-12-22 06:20:08,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:08,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775849191] [2020-12-22 06:20:08,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:08,218 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 06:20:08,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775849191] [2020-12-22 06:20:08,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:08,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:08,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399127213] [2020-12-22 06:20:08,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:08,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:08,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:08,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:08,220 INFO L87 Difference]: Start difference. First operand 4157 states and 7545 transitions. Second operand 3 states. [2020-12-22 06:20:08,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:08,621 INFO L93 Difference]: Finished difference Result 11514 states and 20929 transitions. [2020-12-22 06:20:08,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:08,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-22 06:20:08,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:08,647 INFO L225 Difference]: With dead ends: 11514 [2020-12-22 06:20:08,647 INFO L226 Difference]: Without dead ends: 7526 [2020-12-22 06:20:08,656 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 06:20:08,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7526 states. [2020-12-22 06:20:09,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7526 to 6999. [2020-12-22 06:20:09,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6999 states. [2020-12-22 06:20:09,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6999 states to 6999 states and 12762 transitions. [2020-12-22 06:20:09,152 INFO L78 Accepts]: Start accepts. Automaton has 6999 states and 12762 transitions. Word has length 78 [2020-12-22 06:20:09,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:09,153 INFO L481 AbstractCegarLoop]: Abstraction has 6999 states and 12762 transitions. [2020-12-22 06:20:09,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:09,153 INFO L276 IsEmpty]: Start isEmpty. Operand 6999 states and 12762 transitions. [2020-12-22 06:20:09,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 06:20:09,162 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:09,162 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] [2020-12-22 06:20:09,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:20:09,162 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 06:20:09,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:09,163 INFO L82 PathProgramCache]: Analyzing trace with hash -503987435, now seen corresponding path program 1 times [2020-12-22 06:20:09,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:09,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384627248] [2020-12-22 06:20:09,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:09,240 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 06:20:09,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384627248] [2020-12-22 06:20:09,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:09,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:09,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840370891] [2020-12-22 06:20:09,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:09,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:09,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:09,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:09,245 INFO L87 Difference]: Start difference. First operand 6999 states and 12762 transitions. Second operand 3 states. [2020-12-22 06:20:09,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:09,986 INFO L93 Difference]: Finished difference Result 20498 states and 37422 transitions. [2020-12-22 06:20:09,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:09,987 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 06:20:09,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:10,027 INFO L225 Difference]: With dead ends: 20498 [2020-12-22 06:20:10,028 INFO L226 Difference]: Without dead ends: 13672 [2020-12-22 06:20:10,044 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 06:20:10,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13672 states. [2020-12-22 06:20:10,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13672 to 13145. [2020-12-22 06:20:10,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13145 states. [2020-12-22 06:20:10,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13145 states to 13145 states and 24027 transitions. [2020-12-22 06:20:10,912 INFO L78 Accepts]: Start accepts. Automaton has 13145 states and 24027 transitions. Word has length 79 [2020-12-22 06:20:10,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:10,912 INFO L481 AbstractCegarLoop]: Abstraction has 13145 states and 24027 transitions. [2020-12-22 06:20:10,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:10,912 INFO L276 IsEmpty]: Start isEmpty. Operand 13145 states and 24027 transitions. [2020-12-22 06:20:10,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 06:20:10,924 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:10,924 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] [2020-12-22 06:20:10,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:20:10,925 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 06:20:10,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:10,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1427312934, now seen corresponding path program 1 times [2020-12-22 06:20:10,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:10,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318685273] [2020-12-22 06:20:10,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:11,002 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 06:20:11,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318685273] [2020-12-22 06:20:11,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:11,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:11,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059803753] [2020-12-22 06:20:11,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:11,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:11,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:11,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:11,004 INFO L87 Difference]: Start difference. First operand 13145 states and 24027 transitions. Second operand 3 states. [2020-12-22 06:20:12,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:12,391 INFO L93 Difference]: Finished difference Result 38638 states and 70692 transitions. [2020-12-22 06:20:12,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:12,391 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 06:20:12,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:12,476 INFO L225 Difference]: With dead ends: 38638 [2020-12-22 06:20:12,476 INFO L226 Difference]: Without dead ends: 25674 [2020-12-22 06:20:12,500 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 06:20:12,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25674 states. [2020-12-22 06:20:13,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25674 to 25147. [2020-12-22 06:20:13,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25147 states. [2020-12-22 06:20:13,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25147 states to 25147 states and 46012 transitions. [2020-12-22 06:20:13,973 INFO L78 Accepts]: Start accepts. Automaton has 25147 states and 46012 transitions. Word has length 80 [2020-12-22 06:20:13,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:13,973 INFO L481 AbstractCegarLoop]: Abstraction has 25147 states and 46012 transitions. [2020-12-22 06:20:13,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:13,974 INFO L276 IsEmpty]: Start isEmpty. Operand 25147 states and 46012 transitions. [2020-12-22 06:20:13,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 06:20:13,991 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:13,991 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] [2020-12-22 06:20:13,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:20:13,992 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 06:20:13,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:13,992 INFO L82 PathProgramCache]: Analyzing trace with hash -40964589, now seen corresponding path program 1 times [2020-12-22 06:20:13,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:13,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731952449] [2020-12-22 06:20:13,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:14,067 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 06:20:14,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731952449] [2020-12-22 06:20:14,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:14,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:14,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857504000] [2020-12-22 06:20:14,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:14,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:14,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:14,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:14,070 INFO L87 Difference]: Start difference. First operand 25147 states and 46012 transitions. Second operand 3 states. [2020-12-22 06:20:16,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:16,264 INFO L93 Difference]: Finished difference Result 69283 states and 126383 transitions. [2020-12-22 06:20:16,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:16,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 06:20:16,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:16,398 INFO L225 Difference]: With dead ends: 69283 [2020-12-22 06:20:16,398 INFO L226 Difference]: Without dead ends: 44364 [2020-12-22 06:20:16,437 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 06:20:16,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44364 states. [2020-12-22 06:20:18,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44364 to 43837. [2020-12-22 06:20:18,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43837 states. [2020-12-22 06:20:18,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43837 states to 43837 states and 79741 transitions. [2020-12-22 06:20:18,691 INFO L78 Accepts]: Start accepts. Automaton has 43837 states and 79741 transitions. Word has length 81 [2020-12-22 06:20:18,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:18,691 INFO L481 AbstractCegarLoop]: Abstraction has 43837 states and 79741 transitions. [2020-12-22 06:20:18,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:18,691 INFO L276 IsEmpty]: Start isEmpty. Operand 43837 states and 79741 transitions. [2020-12-22 06:20:18,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:20:18,710 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:18,711 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] [2020-12-22 06:20:18,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:20:18,711 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 06:20:18,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:18,712 INFO L82 PathProgramCache]: Analyzing trace with hash 537781887, now seen corresponding path program 1 times [2020-12-22 06:20:18,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:18,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382939521] [2020-12-22 06:20:18,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:18,787 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 06:20:18,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382939521] [2020-12-22 06:20:18,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:18,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:20:18,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716501127] [2020-12-22 06:20:18,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:20:18,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:18,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:20:18,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:20:18,790 INFO L87 Difference]: Start difference. First operand 43837 states and 79741 transitions. Second operand 5 states. [2020-12-22 06:20:21,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:21,684 INFO L93 Difference]: Finished difference Result 129128 states and 234872 transitions. [2020-12-22 06:20:21,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:20:21,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-12-22 06:20:21,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:21,914 INFO L225 Difference]: With dead ends: 129128 [2020-12-22 06:20:21,915 INFO L226 Difference]: Without dead ends: 85587 [2020-12-22 06:20:21,955 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 06:20:22,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85587 states. [2020-12-22 06:20:24,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85587 to 43837. [2020-12-22 06:20:24,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43837 states. [2020-12-22 06:20:24,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43837 states to 43837 states and 79483 transitions. [2020-12-22 06:20:24,346 INFO L78 Accepts]: Start accepts. Automaton has 43837 states and 79483 transitions. Word has length 82 [2020-12-22 06:20:24,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:24,347 INFO L481 AbstractCegarLoop]: Abstraction has 43837 states and 79483 transitions. [2020-12-22 06:20:24,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:20:24,347 INFO L276 IsEmpty]: Start isEmpty. Operand 43837 states and 79483 transitions. [2020-12-22 06:20:24,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:20:24,361 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:24,361 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] [2020-12-22 06:20:24,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:20:24,361 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 06:20:24,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:24,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1431788767, now seen corresponding path program 2 times [2020-12-22 06:20:24,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:24,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357833928] [2020-12-22 06:20:24,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:24,427 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 06:20:24,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357833928] [2020-12-22 06:20:24,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:24,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:24,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272741422] [2020-12-22 06:20:24,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:24,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:24,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:24,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:24,430 INFO L87 Difference]: Start difference. First operand 43837 states and 79483 transitions. Second operand 3 states. [2020-12-22 06:20:26,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:26,096 INFO L93 Difference]: Finished difference Result 87899 states and 159337 transitions. [2020-12-22 06:20:26,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:26,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 06:20:26,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:26,228 INFO L225 Difference]: With dead ends: 87899 [2020-12-22 06:20:26,228 INFO L226 Difference]: Without dead ends: 44364 [2020-12-22 06:20:26,272 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 06:20:26,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44364 states. [2020-12-22 06:20:28,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44364 to 43837. [2020-12-22 06:20:28,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43837 states. [2020-12-22 06:20:28,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43837 states to 43837 states and 79355 transitions. [2020-12-22 06:20:28,213 INFO L78 Accepts]: Start accepts. Automaton has 43837 states and 79355 transitions. Word has length 82 [2020-12-22 06:20:28,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:28,213 INFO L481 AbstractCegarLoop]: Abstraction has 43837 states and 79355 transitions. [2020-12-22 06:20:28,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:28,213 INFO L276 IsEmpty]: Start isEmpty. Operand 43837 states and 79355 transitions. [2020-12-22 06:20:28,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:20:28,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:28,227 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] [2020-12-22 06:20:28,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:20:28,228 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 06:20:28,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:28,228 INFO L82 PathProgramCache]: Analyzing trace with hash 111663252, now seen corresponding path program 1 times [2020-12-22 06:20:28,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:28,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340477498] [2020-12-22 06:20:28,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:28,303 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 06:20:28,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340477498] [2020-12-22 06:20:28,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:28,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:20:28,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392026477] [2020-12-22 06:20:28,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:20:28,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:28,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:20:28,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:20:28,307 INFO L87 Difference]: Start difference. First operand 43837 states and 79355 transitions. Second operand 3 states. [2020-12-22 06:20:31,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:31,105 INFO L93 Difference]: Finished difference Result 123013 states and 222515 transitions. [2020-12-22 06:20:31,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:20:31,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 06:20:31,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:31,248 INFO L225 Difference]: With dead ends: 123013 [2020-12-22 06:20:31,249 INFO L226 Difference]: Without dead ends: 79438 [2020-12-22 06:20:31,289 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 06:20:31,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79438 states. [2020-12-22 06:20:34,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79438 to 78911. [2020-12-22 06:20:34,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78911 states. [2020-12-22 06:20:34,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78911 states to 78911 states and 142460 transitions. [2020-12-22 06:20:34,978 INFO L78 Accepts]: Start accepts. Automaton has 78911 states and 142460 transitions. Word has length 82 [2020-12-22 06:20:34,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:34,978 INFO L481 AbstractCegarLoop]: Abstraction has 78911 states and 142460 transitions. [2020-12-22 06:20:34,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:20:34,979 INFO L276 IsEmpty]: Start isEmpty. Operand 78911 states and 142460 transitions. [2020-12-22 06:20:34,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 06:20:34,994 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:34,995 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] [2020-12-22 06:20:34,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:20:34,995 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 06:20:34,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:34,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1834920603, now seen corresponding path program 1 times [2020-12-22 06:20:34,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:34,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271174402] [2020-12-22 06:20:34,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:35,103 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 06:20:35,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271174402] [2020-12-22 06:20:35,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:35,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 06:20:35,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56679028] [2020-12-22 06:20:35,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 06:20:35,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:35,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 06:20:35,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:20:35,105 INFO L87 Difference]: Start difference. First operand 78911 states and 142460 transitions. Second operand 9 states. [2020-12-22 06:20:39,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:39,363 INFO L93 Difference]: Finished difference Result 81993 states and 147608 transitions. [2020-12-22 06:20:39,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 06:20:39,363 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-12-22 06:20:39,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:39,480 INFO L225 Difference]: With dead ends: 81993 [2020-12-22 06:20:39,480 INFO L226 Difference]: Without dead ends: 81565 [2020-12-22 06:20:39,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-12-22 06:20:39,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81565 states. [2020-12-22 06:20:42,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81565 to 79267. [2020-12-22 06:20:42,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79267 states. [2020-12-22 06:20:42,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79267 states to 79267 states and 143061 transitions. [2020-12-22 06:20:42,900 INFO L78 Accepts]: Start accepts. Automaton has 79267 states and 143061 transitions. Word has length 83 [2020-12-22 06:20:42,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:42,900 INFO L481 AbstractCegarLoop]: Abstraction has 79267 states and 143061 transitions. [2020-12-22 06:20:42,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 06:20:42,900 INFO L276 IsEmpty]: Start isEmpty. Operand 79267 states and 143061 transitions. [2020-12-22 06:20:42,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 06:20:42,913 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:42,913 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] [2020-12-22 06:20:42,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:20:42,914 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 06:20:42,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:42,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1461009629, now seen corresponding path program 1 times [2020-12-22 06:20:42,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:42,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500736825] [2020-12-22 06:20:42,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:43,042 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 06:20:43,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500736825] [2020-12-22 06:20:43,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:43,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 06:20:43,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228757803] [2020-12-22 06:20:43,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 06:20:43,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:43,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 06:20:43,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:20:43,044 INFO L87 Difference]: Start difference. First operand 79267 states and 143061 transitions. Second operand 11 states. [2020-12-22 06:20:44,251 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-12-22 06:20:47,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:47,948 INFO L93 Difference]: Finished difference Result 83380 states and 149984 transitions. [2020-12-22 06:20:47,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 06:20:47,950 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-12-22 06:20:47,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:48,065 INFO L225 Difference]: With dead ends: 83380 [2020-12-22 06:20:48,065 INFO L226 Difference]: Without dead ends: 82705 [2020-12-22 06:20:48,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=466, Invalid=1340, Unknown=0, NotChecked=0, Total=1806 [2020-12-22 06:20:48,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82705 states. [2020-12-22 06:20:51,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82705 to 79474. [2020-12-22 06:20:51,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79474 states. [2020-12-22 06:20:51,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79474 states to 79474 states and 143403 transitions. [2020-12-22 06:20:51,438 INFO L78 Accepts]: Start accepts. Automaton has 79474 states and 143403 transitions. Word has length 84 [2020-12-22 06:20:51,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:51,439 INFO L481 AbstractCegarLoop]: Abstraction has 79474 states and 143403 transitions. [2020-12-22 06:20:51,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 06:20:51,439 INFO L276 IsEmpty]: Start isEmpty. Operand 79474 states and 143403 transitions. [2020-12-22 06:20:51,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 06:20:51,449 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:51,449 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] [2020-12-22 06:20:51,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:20:51,450 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 06:20:51,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:51,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1722219447, now seen corresponding path program 1 times [2020-12-22 06:20:51,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:51,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785235214] [2020-12-22 06:20:51,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:51,564 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 06:20:51,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785235214] [2020-12-22 06:20:51,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:51,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 06:20:51,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901680913] [2020-12-22 06:20:51,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 06:20:51,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:51,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 06:20:51,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:20:51,567 INFO L87 Difference]: Start difference. First operand 79474 states and 143403 transitions. Second operand 8 states. [2020-12-22 06:20:54,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:20:54,557 INFO L93 Difference]: Finished difference Result 80844 states and 145706 transitions. [2020-12-22 06:20:54,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 06:20:54,558 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-12-22 06:20:54,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:20:54,669 INFO L225 Difference]: With dead ends: 80844 [2020-12-22 06:20:54,669 INFO L226 Difference]: Without dead ends: 79770 [2020-12-22 06:20:54,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-12-22 06:20:54,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79770 states. [2020-12-22 06:20:57,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79770 to 79338. [2020-12-22 06:20:57,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79338 states. [2020-12-22 06:20:57,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79338 states to 79338 states and 143164 transitions. [2020-12-22 06:20:57,916 INFO L78 Accepts]: Start accepts. Automaton has 79338 states and 143164 transitions. Word has length 84 [2020-12-22 06:20:57,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:20:57,917 INFO L481 AbstractCegarLoop]: Abstraction has 79338 states and 143164 transitions. [2020-12-22 06:20:57,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 06:20:57,917 INFO L276 IsEmpty]: Start isEmpty. Operand 79338 states and 143164 transitions. [2020-12-22 06:20:57,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 06:20:57,930 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:20:57,930 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] [2020-12-22 06:20:57,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:20:57,931 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 06:20:57,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:20:57,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1085914271, now seen corresponding path program 1 times [2020-12-22 06:20:57,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:20:57,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334951231] [2020-12-22 06:20:57,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:20:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:20:58,016 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 06:20:58,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334951231] [2020-12-22 06:20:58,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:20:58,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:20:58,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774356313] [2020-12-22 06:20:58,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:20:58,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:20:58,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:20:58,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:20:58,018 INFO L87 Difference]: Start difference. First operand 79338 states and 143164 transitions. Second operand 5 states. [2020-12-22 06:21:01,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:01,627 INFO L93 Difference]: Finished difference Result 85131 states and 152833 transitions. [2020-12-22 06:21:01,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:21:01,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-12-22 06:21:01,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:01,748 INFO L225 Difference]: With dead ends: 85131 [2020-12-22 06:21:01,748 INFO L226 Difference]: Without dead ends: 84393 [2020-12-22 06:21:01,770 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 06:21:01,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84393 states. [2020-12-22 06:21:05,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84393 to 80213. [2020-12-22 06:21:05,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80213 states. [2020-12-22 06:21:05,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80213 states to 80213 states and 144614 transitions. [2020-12-22 06:21:05,216 INFO L78 Accepts]: Start accepts. Automaton has 80213 states and 144614 transitions. Word has length 85 [2020-12-22 06:21:05,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:05,217 INFO L481 AbstractCegarLoop]: Abstraction has 80213 states and 144614 transitions. [2020-12-22 06:21:05,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:21:05,217 INFO L276 IsEmpty]: Start isEmpty. Operand 80213 states and 144614 transitions. [2020-12-22 06:21:05,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 06:21:05,229 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:05,229 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] [2020-12-22 06:21:05,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:21:05,229 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 06:21:05,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:05,230 INFO L82 PathProgramCache]: Analyzing trace with hash -694610842, now seen corresponding path program 1 times [2020-12-22 06:21:05,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:05,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639487732] [2020-12-22 06:21:05,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 06:21:05,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639487732] [2020-12-22 06:21:05,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353110651] [2020-12-22 06:21:05,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 06:21:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:05,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 06:21:05,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:21:06,102 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:21:06,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 06:21:06,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2020-12-22 06:21:06,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303078066] [2020-12-22 06:21:06,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 06:21:06,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:06,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 06:21:06,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:21:06,107 INFO L87 Difference]: Start difference. First operand 80213 states and 144614 transitions. Second operand 9 states. [2020-12-22 06:21:12,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:12,508 INFO L93 Difference]: Finished difference Result 110591 states and 196004 transitions. [2020-12-22 06:21:12,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-22 06:21:12,509 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-12-22 06:21:12,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:12,698 INFO L225 Difference]: With dead ends: 110591 [2020-12-22 06:21:12,698 INFO L226 Difference]: Without dead ends: 108692 [2020-12-22 06:21:12,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=238, Invalid=884, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 06:21:12,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108692 states. [2020-12-22 06:21:16,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108692 to 82652. [2020-12-22 06:21:16,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82652 states. [2020-12-22 06:21:16,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82652 states to 82652 states and 148923 transitions. [2020-12-22 06:21:16,694 INFO L78 Accepts]: Start accepts. Automaton has 82652 states and 148923 transitions. Word has length 86 [2020-12-22 06:21:16,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:16,694 INFO L481 AbstractCegarLoop]: Abstraction has 82652 states and 148923 transitions. [2020-12-22 06:21:16,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 06:21:16,694 INFO L276 IsEmpty]: Start isEmpty. Operand 82652 states and 148923 transitions. [2020-12-22 06:21:16,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 06:21:16,711 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:16,712 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 06:21:16,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 06:21:16,927 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 06:21:16,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:16,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1784122172, now seen corresponding path program 1 times [2020-12-22 06:21:16,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:16,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237897405] [2020-12-22 06:21:16,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:17,005 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 06:21:17,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237897405] [2020-12-22 06:21:17,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:17,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:17,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457834320] [2020-12-22 06:21:17,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:17,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:17,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:17,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:17,008 INFO L87 Difference]: Start difference. First operand 82652 states and 148923 transitions. Second operand 3 states. [2020-12-22 06:21:23,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:23,034 INFO L93 Difference]: Finished difference Result 240819 states and 434080 transitions. [2020-12-22 06:21:23,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:23,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-22 06:21:23,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:23,526 INFO L225 Difference]: With dead ends: 240819 [2020-12-22 06:21:23,526 INFO L226 Difference]: Without dead ends: 160293 [2020-12-22 06:21:23,601 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 06:21:23,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160293 states. [2020-12-22 06:21:30,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160293 to 158442. [2020-12-22 06:21:30,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158442 states. [2020-12-22 06:21:30,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158442 states to 158442 states and 285318 transitions. [2020-12-22 06:21:30,727 INFO L78 Accepts]: Start accepts. Automaton has 158442 states and 285318 transitions. Word has length 86 [2020-12-22 06:21:30,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:30,727 INFO L481 AbstractCegarLoop]: Abstraction has 158442 states and 285318 transitions. [2020-12-22 06:21:30,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:30,727 INFO L276 IsEmpty]: Start isEmpty. Operand 158442 states and 285318 transitions. [2020-12-22 06:21:30,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 06:21:30,750 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:30,751 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 06:21:30,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 06:21:30,751 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 06:21:30,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:30,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1738623423, now seen corresponding path program 1 times [2020-12-22 06:21:30,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:30,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401152326] [2020-12-22 06:21:30,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:31,167 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 06:21:31,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401152326] [2020-12-22 06:21:31,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:31,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:21:31,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309820142] [2020-12-22 06:21:31,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:21:31,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:31,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:21:31,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:21:31,168 INFO L87 Difference]: Start difference. First operand 158442 states and 285318 transitions. Second operand 3 states. [2020-12-22 06:21:40,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:21:40,904 INFO L93 Difference]: Finished difference Result 284236 states and 510468 transitions. [2020-12-22 06:21:40,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:21:40,905 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-12-22 06:21:40,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:21:41,474 INFO L225 Difference]: With dead ends: 284236 [2020-12-22 06:21:41,474 INFO L226 Difference]: Without dead ends: 282385 [2020-12-22 06:21:41,543 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 06:21:41,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282385 states. [2020-12-22 06:21:55,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282385 to 280534. [2020-12-22 06:21:55,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280534 states. [2020-12-22 06:21:56,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280534 states to 280534 states and 503318 transitions. [2020-12-22 06:21:56,356 INFO L78 Accepts]: Start accepts. Automaton has 280534 states and 503318 transitions. Word has length 87 [2020-12-22 06:21:56,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:21:56,357 INFO L481 AbstractCegarLoop]: Abstraction has 280534 states and 503318 transitions. [2020-12-22 06:21:56,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:21:56,357 INFO L276 IsEmpty]: Start isEmpty. Operand 280534 states and 503318 transitions. [2020-12-22 06:21:56,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 06:21:56,374 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:21:56,374 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 06:21:56,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 06:21:56,375 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 06:21:56,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:21:56,375 INFO L82 PathProgramCache]: Analyzing trace with hash -849996374, now seen corresponding path program 1 times [2020-12-22 06:21:56,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:21:56,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691187120] [2020-12-22 06:21:56,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:21:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:21:56,461 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 06:21:56,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691187120] [2020-12-22 06:21:56,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:21:56,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:21:56,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017382785] [2020-12-22 06:21:56,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:21:56,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:21:56,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:21:56,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:21:56,463 INFO L87 Difference]: Start difference. First operand 280534 states and 503318 transitions. Second operand 5 states.