/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/elevator_spec3_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:12:05,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:12:05,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:12:05,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:12:05,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:12:05,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:12:05,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:12:05,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:12:05,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:12:05,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:12:05,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:12:05,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:12:05,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:12:05,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:12:05,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:12:05,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:12:05,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:12:05,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:12:05,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:12:05,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:12:05,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:12:05,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:12:05,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:12:05,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:12:05,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:12:05,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:12:05,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:12:05,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:12:05,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:12:05,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:12:05,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:12:05,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:12:05,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:12:05,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:12:05,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:12:05,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:12:05,387 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:12:05,437 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:12:05,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:12:05,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:12:05,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:12:05,441 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:12:05,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:12:05,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:12:05,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:12:05,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:12:05,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:12:05,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:12:05,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:12:05,444 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:12:05,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:12:05,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:12:05,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:12:05,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:12:05,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:12:05,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:12:05,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:12:05,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:12:05,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:12:05,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:12:05,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:12:05,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:12:05,447 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:12:05,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:12:05,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:12:05,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:12:05,908 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:12:05,909 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:12:05,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c [2020-12-22 06:12:05,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/476856b93/ab249ede0718430ab2a542f188270b07/FLAG0d26c234a [2020-12-22 06:12:06,793 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:12:06,793 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c [2020-12-22 06:12:06,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/476856b93/ab249ede0718430ab2a542f188270b07/FLAG0d26c234a [2020-12-22 06:12:06,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/476856b93/ab249ede0718430ab2a542f188270b07 [2020-12-22 06:12:06,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:12:06,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:12:06,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:12:06,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:12:06,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:12:06,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:12:06" (1/1) ... [2020-12-22 06:12:06,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c4c658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:06, skipping insertion in model container [2020-12-22 06:12:06,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:12:06" (1/1) ... [2020-12-22 06:12:06,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:12:07,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:12:07,333 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/elevator_spec3_product30.cil.c[14199,14212] [2020-12-22 06:12:07,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:12:07,629 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:12:07,669 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/elevator_spec3_product30.cil.c[14199,14212] [2020-12-22 06:12:07,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:12:07,907 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:12:07,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:07 WrapperNode [2020-12-22 06:12:07,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:12:07,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:12:07,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:12:07,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:12:07,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:07" (1/1) ... [2020-12-22 06:12:07,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:07" (1/1) ... [2020-12-22 06:12:09,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:12:09,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:12:09,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:12:09,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:12:09,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:07" (1/1) ... [2020-12-22 06:12:09,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:07" (1/1) ... [2020-12-22 06:12:09,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:07" (1/1) ... [2020-12-22 06:12:09,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:07" (1/1) ... [2020-12-22 06:12:09,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:07" (1/1) ... [2020-12-22 06:12:10,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:07" (1/1) ... [2020-12-22 06:12:10,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:07" (1/1) ... [2020-12-22 06:12:10,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:12:10,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:12:10,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:12:10,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:12:10,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:07" (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 06:12:10,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:12:10,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:12:10,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:12:10,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:13:02,321 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:13:02,322 INFO L299 CfgBuilder]: Removed 3817 assume(true) statements. [2020-12-22 06:13:02,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:13:02 BoogieIcfgContainer [2020-12-22 06:13:02,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:13:02,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:13:02,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:13:02,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:13:02,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:12:06" (1/3) ... [2020-12-22 06:13:02,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2203155b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:13:02, skipping insertion in model container [2020-12-22 06:13:02,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:07" (2/3) ... [2020-12-22 06:13:02,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2203155b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:13:02, skipping insertion in model container [2020-12-22 06:13:02,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:13:02" (3/3) ... [2020-12-22 06:13:02,351 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product30.cil.c [2020-12-22 06:13:02,357 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:13:02,379 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-22 06:13:02,399 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-22 06:13:02,646 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:13:02,646 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:13:02,646 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:13:02,646 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:13:02,646 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:13:02,647 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:13:02,647 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:13:02,647 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:13:02,870 INFO L276 IsEmpty]: Start isEmpty. Operand 17333 states. [2020-12-22 06:13:02,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 06:13:02,886 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:02,887 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] [2020-12-22 06:13:02,888 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:02,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:02,896 INFO L82 PathProgramCache]: Analyzing trace with hash 2075688270, now seen corresponding path program 1 times [2020-12-22 06:13:02,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:02,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084332] [2020-12-22 06:13:02,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:03,409 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 06:13:03,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084332] [2020-12-22 06:13:03,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:03,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:13:03,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997102577] [2020-12-22 06:13:03,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:13:03,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:03,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:13:03,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:13:03,433 INFO L87 Difference]: Start difference. First operand 17333 states. Second operand 4 states. [2020-12-22 06:13:05,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:05,588 INFO L93 Difference]: Finished difference Result 69157 states and 130829 transitions. [2020-12-22 06:13:05,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:13:05,591 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-12-22 06:13:05,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:05,921 INFO L225 Difference]: With dead ends: 69157 [2020-12-22 06:13:05,921 INFO L226 Difference]: Without dead ends: 51837 [2020-12-22 06:13:05,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:13:06,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51837 states. [2020-12-22 06:13:07,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51837 to 17341. [2020-12-22 06:13:07,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17341 states. [2020-12-22 06:13:07,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17341 states to 17341 states and 32783 transitions. [2020-12-22 06:13:07,627 INFO L78 Accepts]: Start accepts. Automaton has 17341 states and 32783 transitions. Word has length 30 [2020-12-22 06:13:07,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:07,628 INFO L481 AbstractCegarLoop]: Abstraction has 17341 states and 32783 transitions. [2020-12-22 06:13:07,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:13:07,628 INFO L276 IsEmpty]: Start isEmpty. Operand 17341 states and 32783 transitions. [2020-12-22 06:13:07,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:13:07,639 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:07,639 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] [2020-12-22 06:13:07,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:13:07,640 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:07,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:07,642 INFO L82 PathProgramCache]: Analyzing trace with hash -383676273, now seen corresponding path program 1 times [2020-12-22 06:13:07,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:07,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993114307] [2020-12-22 06:13:07,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:07,795 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 06:13:07,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993114307] [2020-12-22 06:13:07,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:07,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:13:07,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741518275] [2020-12-22 06:13:07,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:13:07,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:07,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:13:07,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:13:07,801 INFO L87 Difference]: Start difference. First operand 17341 states and 32783 transitions. Second operand 3 states. [2020-12-22 06:13:08,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:08,517 INFO L93 Difference]: Finished difference Result 34598 states and 65413 transitions. [2020-12-22 06:13:08,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:13:08,518 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-12-22 06:13:08,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:08,588 INFO L225 Difference]: With dead ends: 34598 [2020-12-22 06:13:08,589 INFO L226 Difference]: Without dead ends: 17271 [2020-12-22 06:13:08,624 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 06:13:08,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17271 states. [2020-12-22 06:13:09,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17271 to 17271. [2020-12-22 06:13:09,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17271 states. [2020-12-22 06:13:09,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17271 states to 17271 states and 32643 transitions. [2020-12-22 06:13:09,180 INFO L78 Accepts]: Start accepts. Automaton has 17271 states and 32643 transitions. Word has length 31 [2020-12-22 06:13:09,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:09,180 INFO L481 AbstractCegarLoop]: Abstraction has 17271 states and 32643 transitions. [2020-12-22 06:13:09,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:13:09,181 INFO L276 IsEmpty]: Start isEmpty. Operand 17271 states and 32643 transitions. [2020-12-22 06:13:09,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 06:13:09,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:09,183 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] [2020-12-22 06:13:09,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:13:09,183 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:09,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:09,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1770955322, now seen corresponding path program 1 times [2020-12-22 06:13:09,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:09,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959618599] [2020-12-22 06:13:09,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:09,262 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 06:13:09,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959618599] [2020-12-22 06:13:09,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:09,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:13:09,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173032209] [2020-12-22 06:13:09,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:13:09,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:09,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:13:09,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:13:09,265 INFO L87 Difference]: Start difference. First operand 17271 states and 32643 transitions. Second operand 4 states. [2020-12-22 06:13:10,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:10,106 INFO L93 Difference]: Finished difference Result 34516 states and 65249 transitions. [2020-12-22 06:13:10,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:13:10,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-12-22 06:13:10,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:10,169 INFO L225 Difference]: With dead ends: 34516 [2020-12-22 06:13:10,169 INFO L226 Difference]: Without dead ends: 17271 [2020-12-22 06:13:10,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:13:10,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17271 states. [2020-12-22 06:13:10,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17271 to 17271. [2020-12-22 06:13:10,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17271 states. [2020-12-22 06:13:10,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17271 states to 17271 states and 32641 transitions. [2020-12-22 06:13:10,924 INFO L78 Accepts]: Start accepts. Automaton has 17271 states and 32641 transitions. Word has length 34 [2020-12-22 06:13:10,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:10,931 INFO L481 AbstractCegarLoop]: Abstraction has 17271 states and 32641 transitions. [2020-12-22 06:13:10,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:13:10,932 INFO L276 IsEmpty]: Start isEmpty. Operand 17271 states and 32641 transitions. [2020-12-22 06:13:10,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 06:13:10,935 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:10,935 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] [2020-12-22 06:13:10,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:13:10,936 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:10,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:10,936 INFO L82 PathProgramCache]: Analyzing trace with hash -168508287, now seen corresponding path program 1 times [2020-12-22 06:13:10,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:10,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430208508] [2020-12-22 06:13:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:11,044 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 06:13:11,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430208508] [2020-12-22 06:13:11,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:11,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:13:11,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027669123] [2020-12-22 06:13:11,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:13:11,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:11,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:13:11,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:13:11,047 INFO L87 Difference]: Start difference. First operand 17271 states and 32641 transitions. Second operand 4 states. [2020-12-22 06:13:11,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:11,841 INFO L93 Difference]: Finished difference Result 34516 states and 65246 transitions. [2020-12-22 06:13:11,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:13:11,842 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-12-22 06:13:11,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:11,890 INFO L225 Difference]: With dead ends: 34516 [2020-12-22 06:13:11,891 INFO L226 Difference]: Without dead ends: 17271 [2020-12-22 06:13:11,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:13:11,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17271 states. [2020-12-22 06:13:12,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17271 to 17271. [2020-12-22 06:13:12,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17271 states. [2020-12-22 06:13:12,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17271 states to 17271 states and 32639 transitions. [2020-12-22 06:13:12,610 INFO L78 Accepts]: Start accepts. Automaton has 17271 states and 32639 transitions. Word has length 35 [2020-12-22 06:13:12,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:12,610 INFO L481 AbstractCegarLoop]: Abstraction has 17271 states and 32639 transitions. [2020-12-22 06:13:12,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:13:12,610 INFO L276 IsEmpty]: Start isEmpty. Operand 17271 states and 32639 transitions. [2020-12-22 06:13:12,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 06:13:12,614 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:12,614 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] [2020-12-22 06:13:12,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:13:12,615 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:12,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:12,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1572315073, now seen corresponding path program 1 times [2020-12-22 06:13:12,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:12,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223263776] [2020-12-22 06:13:12,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:12,693 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 06:13:12,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223263776] [2020-12-22 06:13:12,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:12,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:13:12,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896125366] [2020-12-22 06:13:12,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:13:12,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:12,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:13:12,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:13:12,695 INFO L87 Difference]: Start difference. First operand 17271 states and 32639 transitions. Second operand 4 states. [2020-12-22 06:13:13,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:13,469 INFO L93 Difference]: Finished difference Result 34516 states and 65243 transitions. [2020-12-22 06:13:13,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:13:13,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-12-22 06:13:13,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:13,515 INFO L225 Difference]: With dead ends: 34516 [2020-12-22 06:13:13,515 INFO L226 Difference]: Without dead ends: 17271 [2020-12-22 06:13:13,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:13:13,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17271 states. [2020-12-22 06:13:14,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17271 to 17271. [2020-12-22 06:13:14,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17271 states. [2020-12-22 06:13:14,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17271 states to 17271 states and 32637 transitions. [2020-12-22 06:13:14,123 INFO L78 Accepts]: Start accepts. Automaton has 17271 states and 32637 transitions. Word has length 36 [2020-12-22 06:13:14,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:14,123 INFO L481 AbstractCegarLoop]: Abstraction has 17271 states and 32637 transitions. [2020-12-22 06:13:14,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:13:14,123 INFO L276 IsEmpty]: Start isEmpty. Operand 17271 states and 32637 transitions. [2020-12-22 06:13:14,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 06:13:14,124 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:14,124 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] [2020-12-22 06:13:14,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:13:14,125 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:14,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:14,125 INFO L82 PathProgramCache]: Analyzing trace with hash -987130084, now seen corresponding path program 1 times [2020-12-22 06:13:14,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:14,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999901835] [2020-12-22 06:13:14,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:14,195 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 06:13:14,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999901835] [2020-12-22 06:13:14,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:14,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:13:14,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53587041] [2020-12-22 06:13:14,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:13:14,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:14,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:13:14,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:13:14,198 INFO L87 Difference]: Start difference. First operand 17271 states and 32637 transitions. Second operand 4 states. [2020-12-22 06:13:15,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:15,153 INFO L93 Difference]: Finished difference Result 34516 states and 65240 transitions. [2020-12-22 06:13:15,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:13:15,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-12-22 06:13:15,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:15,205 INFO L225 Difference]: With dead ends: 34516 [2020-12-22 06:13:15,205 INFO L226 Difference]: Without dead ends: 17271 [2020-12-22 06:13:15,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:13:15,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17271 states. [2020-12-22 06:13:15,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17271 to 17271. [2020-12-22 06:13:15,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17271 states. [2020-12-22 06:13:15,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17271 states to 17271 states and 32635 transitions. [2020-12-22 06:13:15,822 INFO L78 Accepts]: Start accepts. Automaton has 17271 states and 32635 transitions. Word has length 37 [2020-12-22 06:13:15,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:15,823 INFO L481 AbstractCegarLoop]: Abstraction has 17271 states and 32635 transitions. [2020-12-22 06:13:15,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:13:15,823 INFO L276 IsEmpty]: Start isEmpty. Operand 17271 states and 32635 transitions. [2020-12-22 06:13:15,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 06:13:15,824 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:15,824 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] [2020-12-22 06:13:15,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:13:15,825 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:15,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:15,825 INFO L82 PathProgramCache]: Analyzing trace with hash 584054204, now seen corresponding path program 1 times [2020-12-22 06:13:15,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:15,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294960147] [2020-12-22 06:13:15,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:15,938 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 06:13:15,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294960147] [2020-12-22 06:13:15,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:15,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:13:15,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33607530] [2020-12-22 06:13:15,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:13:15,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:15,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:13:15,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:13:15,940 INFO L87 Difference]: Start difference. First operand 17271 states and 32635 transitions. Second operand 7 states. [2020-12-22 06:13:20,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:20,477 INFO L93 Difference]: Finished difference Result 61981 states and 117052 transitions. [2020-12-22 06:13:20,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 06:13:20,478 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-12-22 06:13:20,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:20,602 INFO L225 Difference]: With dead ends: 61981 [2020-12-22 06:13:20,602 INFO L226 Difference]: Without dead ends: 44780 [2020-12-22 06:13:20,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 06:13:20,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44780 states. [2020-12-22 06:13:22,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44780 to 30774. [2020-12-22 06:13:22,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30774 states. [2020-12-22 06:13:22,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30774 states to 30774 states and 58152 transitions. [2020-12-22 06:13:22,208 INFO L78 Accepts]: Start accepts. Automaton has 30774 states and 58152 transitions. Word has length 38 [2020-12-22 06:13:22,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:22,208 INFO L481 AbstractCegarLoop]: Abstraction has 30774 states and 58152 transitions. [2020-12-22 06:13:22,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:13:22,210 INFO L276 IsEmpty]: Start isEmpty. Operand 30774 states and 58152 transitions. [2020-12-22 06:13:22,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 06:13:22,212 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:22,212 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] [2020-12-22 06:13:22,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:13:22,213 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:22,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:22,213 INFO L82 PathProgramCache]: Analyzing trace with hash -108659753, now seen corresponding path program 1 times [2020-12-22 06:13:22,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:22,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869623932] [2020-12-22 06:13:22,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:22,288 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 06:13:22,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869623932] [2020-12-22 06:13:22,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:22,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:13:22,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942783866] [2020-12-22 06:13:22,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:13:22,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:22,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:13:22,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:13:22,291 INFO L87 Difference]: Start difference. First operand 30774 states and 58152 transitions. Second operand 5 states. [2020-12-22 06:13:36,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:36,879 INFO L93 Difference]: Finished difference Result 255463 states and 482853 transitions. [2020-12-22 06:13:36,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:13:36,879 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-22 06:13:36,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:37,393 INFO L225 Difference]: With dead ends: 255463 [2020-12-22 06:13:37,393 INFO L226 Difference]: Without dead ends: 224759 [2020-12-22 06:13:37,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 06:13:37,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224759 states. [2020-12-22 06:13:41,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224759 to 56835. [2020-12-22 06:13:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56835 states. [2020-12-22 06:13:41,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56835 states to 56835 states and 107176 transitions. [2020-12-22 06:13:41,577 INFO L78 Accepts]: Start accepts. Automaton has 56835 states and 107176 transitions. Word has length 38 [2020-12-22 06:13:41,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:41,577 INFO L481 AbstractCegarLoop]: Abstraction has 56835 states and 107176 transitions. [2020-12-22 06:13:41,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:13:41,578 INFO L276 IsEmpty]: Start isEmpty. Operand 56835 states and 107176 transitions. [2020-12-22 06:13:41,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 06:13:41,578 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:41,578 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] [2020-12-22 06:13:41,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:13:41,579 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:41,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:41,579 INFO L82 PathProgramCache]: Analyzing trace with hash 567742291, now seen corresponding path program 1 times [2020-12-22 06:13:41,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:41,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606778358] [2020-12-22 06:13:41,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:41,640 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 06:13:41,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606778358] [2020-12-22 06:13:41,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:41,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:13:41,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878441914] [2020-12-22 06:13:41,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:13:41,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:41,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:13:41,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:13:41,643 INFO L87 Difference]: Start difference. First operand 56835 states and 107176 transitions. Second operand 3 states. [2020-12-22 06:13:46,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:46,513 INFO L93 Difference]: Finished difference Result 169345 states and 319332 transitions. [2020-12-22 06:13:46,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:13:46,514 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-22 06:13:46,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:46,735 INFO L225 Difference]: With dead ends: 169345 [2020-12-22 06:13:46,735 INFO L226 Difference]: Without dead ends: 112542 [2020-12-22 06:13:46,848 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 06:13:46,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112542 states. [2020-12-22 06:13:49,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112542 to 56711. [2020-12-22 06:13:49,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56711 states. [2020-12-22 06:13:49,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56711 states to 56711 states and 106928 transitions. [2020-12-22 06:13:49,618 INFO L78 Accepts]: Start accepts. Automaton has 56711 states and 106928 transitions. Word has length 39 [2020-12-22 06:13:49,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:49,618 INFO L481 AbstractCegarLoop]: Abstraction has 56711 states and 106928 transitions. [2020-12-22 06:13:49,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:13:49,618 INFO L276 IsEmpty]: Start isEmpty. Operand 56711 states and 106928 transitions. [2020-12-22 06:13:49,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 06:13:49,619 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:49,619 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] [2020-12-22 06:13:49,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:13:49,620 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:49,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:49,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1674581264, now seen corresponding path program 1 times [2020-12-22 06:13:49,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:49,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124315172] [2020-12-22 06:13:49,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:49,753 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 06:13:49,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124315172] [2020-12-22 06:13:49,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:49,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:13:49,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068521801] [2020-12-22 06:13:49,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:13:49,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:49,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:13:49,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:13:49,756 INFO L87 Difference]: Start difference. First operand 56711 states and 106928 transitions. Second operand 5 states. [2020-12-22 06:14:06,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:06,105 INFO L93 Difference]: Finished difference Result 132088 states and 248853 transitions. [2020-12-22 06:14:06,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:14:06,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-12-22 06:14:06,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:06,221 INFO L225 Difference]: With dead ends: 132088 [2020-12-22 06:14:06,221 INFO L226 Difference]: Without dead ends: 75411 [2020-12-22 06:14:06,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 06:14:06,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75411 states. [2020-12-22 06:14:08,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75411 to 74951. [2020-12-22 06:14:08,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74951 states. [2020-12-22 06:14:09,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74951 states to 74951 states and 138956 transitions. [2020-12-22 06:14:09,009 INFO L78 Accepts]: Start accepts. Automaton has 74951 states and 138956 transitions. Word has length 39 [2020-12-22 06:14:09,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:09,009 INFO L481 AbstractCegarLoop]: Abstraction has 74951 states and 138956 transitions. [2020-12-22 06:14:09,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:14:09,009 INFO L276 IsEmpty]: Start isEmpty. Operand 74951 states and 138956 transitions. [2020-12-22 06:14:09,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 06:14:09,010 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:09,010 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] [2020-12-22 06:14:09,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:14:09,010 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:09,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:09,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1662923921, now seen corresponding path program 1 times [2020-12-22 06:14:09,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:09,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666918910] [2020-12-22 06:14:09,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:09,114 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 06:14:09,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666918910] [2020-12-22 06:14:09,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:09,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:14:09,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189423666] [2020-12-22 06:14:09,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:14:09,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:09,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:14:09,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:14:09,116 INFO L87 Difference]: Start difference. First operand 74951 states and 138956 transitions. Second operand 5 states. [2020-12-22 06:14:15,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:15,634 INFO L93 Difference]: Finished difference Result 223309 states and 414082 transitions. [2020-12-22 06:14:15,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:14:15,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-12-22 06:14:15,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:16,040 INFO L225 Difference]: With dead ends: 223309 [2020-12-22 06:14:16,040 INFO L226 Difference]: Without dead ends: 148398 [2020-12-22 06:14:16,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 06:14:16,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148398 states. [2020-12-22 06:14:19,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148398 to 74951. [2020-12-22 06:14:19,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74951 states. [2020-12-22 06:14:19,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74951 states to 74951 states and 138845 transitions. [2020-12-22 06:14:19,407 INFO L78 Accepts]: Start accepts. Automaton has 74951 states and 138845 transitions. Word has length 42 [2020-12-22 06:14:19,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:19,408 INFO L481 AbstractCegarLoop]: Abstraction has 74951 states and 138845 transitions. [2020-12-22 06:14:19,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:14:19,408 INFO L276 IsEmpty]: Start isEmpty. Operand 74951 states and 138845 transitions. [2020-12-22 06:14:19,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 06:14:19,408 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:19,408 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] [2020-12-22 06:14:19,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:14:19,408 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:19,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:19,409 INFO L82 PathProgramCache]: Analyzing trace with hash 556101236, now seen corresponding path program 1 times [2020-12-22 06:14:19,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:19,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593570255] [2020-12-22 06:14:19,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:19,488 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 06:14:19,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593570255] [2020-12-22 06:14:19,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:19,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:14:19,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748381505] [2020-12-22 06:14:19,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:14:19,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:19,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:14:19,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:14:19,490 INFO L87 Difference]: Start difference. First operand 74951 states and 138845 transitions. Second operand 5 states. [2020-12-22 06:14:45,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:45,254 INFO L93 Difference]: Finished difference Result 640367 states and 1187661 transitions. [2020-12-22 06:14:45,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:14:45,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-12-22 06:14:45,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:46,598 INFO L225 Difference]: With dead ends: 640367 [2020-12-22 06:14:46,598 INFO L226 Difference]: Without dead ends: 565475 [2020-12-22 06:14:46,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 06:14:47,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565475 states. [2020-12-22 06:14:59,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565475 to 143083. [2020-12-22 06:14:59,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143083 states. [2020-12-22 06:14:59,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143083 states to 143083 states and 264650 transitions. [2020-12-22 06:14:59,429 INFO L78 Accepts]: Start accepts. Automaton has 143083 states and 264650 transitions. Word has length 43 [2020-12-22 06:14:59,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:59,429 INFO L481 AbstractCegarLoop]: Abstraction has 143083 states and 264650 transitions. [2020-12-22 06:14:59,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:14:59,430 INFO L276 IsEmpty]: Start isEmpty. Operand 143083 states and 264650 transitions. [2020-12-22 06:14:59,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 06:14:59,430 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:59,431 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] [2020-12-22 06:14:59,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:14:59,431 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:59,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:59,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1271817962, now seen corresponding path program 1 times [2020-12-22 06:14:59,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:59,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224248372] [2020-12-22 06:14:59,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:59,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:14:59,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224248372] [2020-12-22 06:14:59,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:59,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:14:59,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974621341] [2020-12-22 06:14:59,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:14:59,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:59,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:14:59,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:14:59,502 INFO L87 Difference]: Start difference. First operand 143083 states and 264650 transitions. Second operand 3 states. [2020-12-22 06:15:10,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:15:10,984 INFO L93 Difference]: Finished difference Result 426632 states and 789350 transitions. [2020-12-22 06:15:10,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:15:10,984 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 06:15:10,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:15:11,719 INFO L225 Difference]: With dead ends: 426632 [2020-12-22 06:15:11,719 INFO L226 Difference]: Without dead ends: 283586 [2020-12-22 06:15:11,884 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 06:15:12,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283586 states. [2020-12-22 06:15:18,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283586 to 142829. [2020-12-22 06:15:18,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142829 states. [2020-12-22 06:15:19,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142829 states to 142829 states and 264149 transitions. [2020-12-22 06:15:19,150 INFO L78 Accepts]: Start accepts. Automaton has 142829 states and 264149 transitions. Word has length 44 [2020-12-22 06:15:19,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:15:19,151 INFO L481 AbstractCegarLoop]: Abstraction has 142829 states and 264149 transitions. [2020-12-22 06:15:19,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:15:19,151 INFO L276 IsEmpty]: Start isEmpty. Operand 142829 states and 264149 transitions. [2020-12-22 06:15:19,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 06:15:19,152 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:15:19,152 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] [2020-12-22 06:15:19,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:15:19,152 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:15:19,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:15:19,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1243444080, now seen corresponding path program 1 times [2020-12-22 06:15:19,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:15:19,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11889054] [2020-12-22 06:15:19,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:15:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:15:19,248 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 06:15:19,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11889054] [2020-12-22 06:15:19,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:15:19,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:15:19,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932837698] [2020-12-22 06:15:19,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:15:19,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:15:19,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:15:19,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:15:19,251 INFO L87 Difference]: Start difference. First operand 142829 states and 264149 transitions. Second operand 3 states. [2020-12-22 06:15:30,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:15:30,828 INFO L93 Difference]: Finished difference Result 426131 states and 788377 transitions. [2020-12-22 06:15:30,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:15:30,829 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-12-22 06:15:30,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:15:31,579 INFO L225 Difference]: With dead ends: 426131 [2020-12-22 06:15:31,579 INFO L226 Difference]: Without dead ends: 283345 [2020-12-22 06:15:31,736 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 06:15:31,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283345 states. [2020-12-22 06:15:38,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283345 to 142717. [2020-12-22 06:15:38,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142717 states.