/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_spec1_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:59:43,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:59:43,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:59:43,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:59:43,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:59:43,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:59:43,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:59:43,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:59:43,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:59:43,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:59:43,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:59:43,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:59:43,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:59:43,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:59:43,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:59:43,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:59:43,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:59:43,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:59:43,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:59:43,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:59:43,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:59:43,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:59:43,498 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:59:43,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:59:43,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:59:43,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:59:43,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:59:43,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:59:43,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:59:43,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:59:43,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:59:43,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:59:43,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:59:43,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:59:43,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:59:43,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:59:43,514 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:59:43,557 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:59:43,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:59:43,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:59:43,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:59:43,562 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:59:43,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:59:43,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:59:43,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:59:43,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:59:43,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:59:43,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:59:43,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:59:43,566 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:59:43,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:59:43,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:59:43,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:59:43,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:59:43,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:59:43,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:59:43,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:59:43,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:59:43,568 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:59:43,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:59:43,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:59:43,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:59:43,569 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:59:43,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:59:43,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:59:44,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:59:44,003 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:59:44,004 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:59:44,005 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c [2020-12-22 05:59:44,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71f35387b/6a019b1300e34ac1b6b6b6d7d9fa4c17/FLAG371171d15 [2020-12-22 05:59:44,874 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:59:44,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c [2020-12-22 05:59:44,917 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71f35387b/6a019b1300e34ac1b6b6b6d7d9fa4c17/FLAG371171d15 [2020-12-22 05:59:45,064 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71f35387b/6a019b1300e34ac1b6b6b6d7d9fa4c17 [2020-12-22 05:59:45,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:59:45,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:59:45,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:59:45,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:59:45,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:59:45,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:59:45" (1/1) ... [2020-12-22 05:59:45,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6094d6f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:45, skipping insertion in model container [2020-12-22 05:59:45,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:59:45" (1/1) ... [2020-12-22 05:59:45,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:59:45,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:59:45,792 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_spec1_product20.cil.c[45090,45103] [2020-12-22 05:59:45,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:59:45,952 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:59:46,092 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_spec1_product20.cil.c[45090,45103] [2020-12-22 05:59:46,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:59:46,189 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:59:46,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:46 WrapperNode [2020-12-22 05:59:46,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:59:46,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:59:46,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:59:46,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:59:46,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:46" (1/1) ... [2020-12-22 05:59:46,236 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:46" (1/1) ... [2020-12-22 05:59:46,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:59:46,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:59:46,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:59:46,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:59:46,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:46" (1/1) ... [2020-12-22 05:59:46,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:46" (1/1) ... [2020-12-22 05:59:46,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:46" (1/1) ... [2020-12-22 05:59:46,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:46" (1/1) ... [2020-12-22 05:59:46,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:46" (1/1) ... [2020-12-22 05:59:46,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:46" (1/1) ... [2020-12-22 05:59:47,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:46" (1/1) ... [2020-12-22 05:59:47,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:59:47,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:59:47,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:59:47,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:59:47,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:46" (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 05:59:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:59:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:59:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:59:47,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:59:56,495 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:59:56,496 INFO L299 CfgBuilder]: Removed 1113 assume(true) statements. [2020-12-22 05:59:56,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:59:56 BoogieIcfgContainer [2020-12-22 05:59:56,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:59:56,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:59:56,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:59:56,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:59:56,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:59:45" (1/3) ... [2020-12-22 05:59:56,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9c539c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:59:56, skipping insertion in model container [2020-12-22 05:59:56,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:46" (2/3) ... [2020-12-22 05:59:56,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9c539c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:59:56, skipping insertion in model container [2020-12-22 05:59:56,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:59:56" (3/3) ... [2020-12-22 05:59:56,520 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product20.cil.c [2020-12-22 05:59:56,527 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:59:56,538 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 05:59:56,559 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 05:59:56,636 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:59:56,636 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:59:56,636 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:59:56,637 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:59:56,637 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:59:56,637 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:59:56,637 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:59:56,637 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:59:56,738 INFO L276 IsEmpty]: Start isEmpty. Operand 4767 states. [2020-12-22 05:59:56,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 05:59:56,757 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:56,758 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 05:59:56,759 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:56,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:56,766 INFO L82 PathProgramCache]: Analyzing trace with hash 120180799, now seen corresponding path program 1 times [2020-12-22 05:59:56,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:56,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944937161] [2020-12-22 05:59:56,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:57,201 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 05:59:57,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944937161] [2020-12-22 05:59:57,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:57,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:57,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638129035] [2020-12-22 05:59:57,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:59:57,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:57,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:59:57,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:57,225 INFO L87 Difference]: Start difference. First operand 4767 states. Second operand 3 states. [2020-12-22 05:59:57,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:57,734 INFO L93 Difference]: Finished difference Result 14221 states and 26831 transitions. [2020-12-22 05:59:57,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:59:57,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-12-22 05:59:57,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:57,813 INFO L225 Difference]: With dead ends: 14221 [2020-12-22 05:59:57,813 INFO L226 Difference]: Without dead ends: 9459 [2020-12-22 05:59:57,830 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 05:59:57,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9459 states. [2020-12-22 05:59:58,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9459 to 4763. [2020-12-22 05:59:58,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4763 states. [2020-12-22 05:59:58,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4763 states to 4763 states and 8974 transitions. [2020-12-22 05:59:58,093 INFO L78 Accepts]: Start accepts. Automaton has 4763 states and 8974 transitions. Word has length 36 [2020-12-22 05:59:58,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:58,094 INFO L481 AbstractCegarLoop]: Abstraction has 4763 states and 8974 transitions. [2020-12-22 05:59:58,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:59:58,094 INFO L276 IsEmpty]: Start isEmpty. Operand 4763 states and 8974 transitions. [2020-12-22 05:59:58,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 05:59:58,097 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:58,097 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 05:59:58,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:59:58,098 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:58,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:58,099 INFO L82 PathProgramCache]: Analyzing trace with hash 808650680, now seen corresponding path program 1 times [2020-12-22 05:59:58,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:58,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732025394] [2020-12-22 05:59:58,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:58,244 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 05:59:58,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732025394] [2020-12-22 05:59:58,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:58,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:59:58,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212186074] [2020-12-22 05:59:58,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:59:58,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:58,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:59:58,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:58,248 INFO L87 Difference]: Start difference. First operand 4763 states and 8974 transitions. Second operand 6 states. [2020-12-22 05:59:59,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:59,284 INFO L93 Difference]: Finished difference Result 18827 states and 35493 transitions. [2020-12-22 05:59:59,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:59:59,285 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-12-22 05:59:59,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:59,383 INFO L225 Difference]: With dead ends: 18827 [2020-12-22 05:59:59,383 INFO L226 Difference]: Without dead ends: 14107 [2020-12-22 05:59:59,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:59:59,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14107 states. [2020-12-22 05:59:59,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14107 to 4759. [2020-12-22 05:59:59,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4759 states. [2020-12-22 05:59:59,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4759 states to 4759 states and 8963 transitions. [2020-12-22 05:59:59,692 INFO L78 Accepts]: Start accepts. Automaton has 4759 states and 8963 transitions. Word has length 43 [2020-12-22 05:59:59,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:59,692 INFO L481 AbstractCegarLoop]: Abstraction has 4759 states and 8963 transitions. [2020-12-22 05:59:59,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:59:59,693 INFO L276 IsEmpty]: Start isEmpty. Operand 4759 states and 8963 transitions. [2020-12-22 05:59:59,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 05:59:59,698 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:59,698 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] [2020-12-22 05:59:59,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:59:59,699 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:59,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:59,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1847887803, now seen corresponding path program 1 times [2020-12-22 05:59:59,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:59,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964067660] [2020-12-22 05:59:59,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:59,834 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 05:59:59,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964067660] [2020-12-22 05:59:59,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:59,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:59,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111104448] [2020-12-22 05:59:59,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:59,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:59,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:59,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:59,837 INFO L87 Difference]: Start difference. First operand 4759 states and 8963 transitions. Second operand 4 states. [2020-12-22 06:00:00,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:00,474 INFO L93 Difference]: Finished difference Result 14165 states and 26698 transitions. [2020-12-22 06:00:00,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:00,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-12-22 06:00:00,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:00,503 INFO L225 Difference]: With dead ends: 14165 [2020-12-22 06:00:00,503 INFO L226 Difference]: Without dead ends: 9449 [2020-12-22 06:00:00,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 06:00:00,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9449 states. [2020-12-22 06:00:00,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9449 to 4759. [2020-12-22 06:00:00,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4759 states. [2020-12-22 06:00:00,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4759 states to 4759 states and 8954 transitions. [2020-12-22 06:00:00,752 INFO L78 Accepts]: Start accepts. Automaton has 4759 states and 8954 transitions. Word has length 45 [2020-12-22 06:00:00,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:00,757 INFO L481 AbstractCegarLoop]: Abstraction has 4759 states and 8954 transitions. [2020-12-22 06:00:00,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:00,758 INFO L276 IsEmpty]: Start isEmpty. Operand 4759 states and 8954 transitions. [2020-12-22 06:00:00,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 06:00:00,759 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:00,759 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] [2020-12-22 06:00:00,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:00:00,760 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:00,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:00,761 INFO L82 PathProgramCache]: Analyzing trace with hash 52932370, now seen corresponding path program 1 times [2020-12-22 06:00:00,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:00,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430783662] [2020-12-22 06:00:00,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:00,867 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 06:00:00,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430783662] [2020-12-22 06:00:00,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:00,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:00,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682540121] [2020-12-22 06:00:00,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:00,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:00,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:00,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:00,870 INFO L87 Difference]: Start difference. First operand 4759 states and 8954 transitions. Second operand 4 states. [2020-12-22 06:00:01,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:01,587 INFO L93 Difference]: Finished difference Result 14165 states and 26680 transitions. [2020-12-22 06:00:01,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:01,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-12-22 06:00:01,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:01,613 INFO L225 Difference]: With dead ends: 14165 [2020-12-22 06:00:01,613 INFO L226 Difference]: Without dead ends: 9449 [2020-12-22 06:00:01,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 06:00:01,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9449 states. [2020-12-22 06:00:01,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9449 to 4759. [2020-12-22 06:00:01,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4759 states. [2020-12-22 06:00:01,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4759 states to 4759 states and 8945 transitions. [2020-12-22 06:00:01,862 INFO L78 Accepts]: Start accepts. Automaton has 4759 states and 8945 transitions. Word has length 47 [2020-12-22 06:00:01,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:01,862 INFO L481 AbstractCegarLoop]: Abstraction has 4759 states and 8945 transitions. [2020-12-22 06:00:01,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:01,862 INFO L276 IsEmpty]: Start isEmpty. Operand 4759 states and 8945 transitions. [2020-12-22 06:00:01,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:00:01,865 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:01,865 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] [2020-12-22 06:00:01,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:00:01,866 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:01,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:01,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1397813317, now seen corresponding path program 1 times [2020-12-22 06:00:01,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:01,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686049672] [2020-12-22 06:00:01,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:01,975 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 06:00:01,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686049672] [2020-12-22 06:00:01,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:01,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:01,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086798373] [2020-12-22 06:00:01,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:01,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:01,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:01,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:01,979 INFO L87 Difference]: Start difference. First operand 4759 states and 8945 transitions. Second operand 4 states. [2020-12-22 06:00:02,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:02,922 INFO L93 Difference]: Finished difference Result 23485 states and 44232 transitions. [2020-12-22 06:00:02,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:02,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-12-22 06:00:02,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:02,980 INFO L225 Difference]: With dead ends: 23485 [2020-12-22 06:00:02,980 INFO L226 Difference]: Without dead ends: 18769 [2020-12-22 06:00:02,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 06:00:03,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18769 states. [2020-12-22 06:00:03,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18769 to 4759. [2020-12-22 06:00:03,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4759 states. [2020-12-22 06:00:03,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4759 states to 4759 states and 8941 transitions. [2020-12-22 06:00:03,285 INFO L78 Accepts]: Start accepts. Automaton has 4759 states and 8941 transitions. Word has length 49 [2020-12-22 06:00:03,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:03,287 INFO L481 AbstractCegarLoop]: Abstraction has 4759 states and 8941 transitions. [2020-12-22 06:00:03,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:03,288 INFO L276 IsEmpty]: Start isEmpty. Operand 4759 states and 8941 transitions. [2020-12-22 06:00:03,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:00:03,290 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:03,290 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] [2020-12-22 06:00:03,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:00:03,291 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:03,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:03,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1465643835, now seen corresponding path program 1 times [2020-12-22 06:00:03,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:03,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924913485] [2020-12-22 06:00:03,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:03,397 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 06:00:03,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924913485] [2020-12-22 06:00:03,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:03,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:03,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399726052] [2020-12-22 06:00:03,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:03,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:03,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:03,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:03,401 INFO L87 Difference]: Start difference. First operand 4759 states and 8941 transitions. Second operand 4 states. [2020-12-22 06:00:04,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:04,070 INFO L93 Difference]: Finished difference Result 18804 states and 35407 transitions. [2020-12-22 06:00:04,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:04,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-12-22 06:00:04,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:04,107 INFO L225 Difference]: With dead ends: 18804 [2020-12-22 06:00:04,107 INFO L226 Difference]: Without dead ends: 14067 [2020-12-22 06:00:04,119 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 06:00:04,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14067 states. [2020-12-22 06:00:04,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14067 to 4741. [2020-12-22 06:00:04,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4741 states. [2020-12-22 06:00:04,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4741 states to 4741 states and 8910 transitions. [2020-12-22 06:00:04,363 INFO L78 Accepts]: Start accepts. Automaton has 4741 states and 8910 transitions. Word has length 49 [2020-12-22 06:00:04,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:04,363 INFO L481 AbstractCegarLoop]: Abstraction has 4741 states and 8910 transitions. [2020-12-22 06:00:04,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:04,363 INFO L276 IsEmpty]: Start isEmpty. Operand 4741 states and 8910 transitions. [2020-12-22 06:00:04,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 06:00:04,364 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:04,365 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] [2020-12-22 06:00:04,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:00:04,365 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:04,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:04,369 INFO L82 PathProgramCache]: Analyzing trace with hash -613459094, now seen corresponding path program 1 times [2020-12-22 06:00:04,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:04,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567633731] [2020-12-22 06:00:04,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:04,440 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 06:00:04,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567633731] [2020-12-22 06:00:04,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:04,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:04,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69822513] [2020-12-22 06:00:04,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:04,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:04,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:04,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:04,444 INFO L87 Difference]: Start difference. First operand 4741 states and 8910 transitions. Second operand 4 states. [2020-12-22 06:00:04,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:04,941 INFO L93 Difference]: Finished difference Result 14129 states and 26593 transitions. [2020-12-22 06:00:04,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:04,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-12-22 06:00:04,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:04,966 INFO L225 Difference]: With dead ends: 14129 [2020-12-22 06:00:04,967 INFO L226 Difference]: Without dead ends: 9410 [2020-12-22 06:00:04,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 06:00:04,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9410 states. [2020-12-22 06:00:05,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9410 to 4741. [2020-12-22 06:00:05,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4741 states. [2020-12-22 06:00:05,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4741 states to 4741 states and 8904 transitions. [2020-12-22 06:00:05,189 INFO L78 Accepts]: Start accepts. Automaton has 4741 states and 8904 transitions. Word has length 50 [2020-12-22 06:00:05,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:05,190 INFO L481 AbstractCegarLoop]: Abstraction has 4741 states and 8904 transitions. [2020-12-22 06:00:05,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:05,191 INFO L276 IsEmpty]: Start isEmpty. Operand 4741 states and 8904 transitions. [2020-12-22 06:00:05,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:00:05,194 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:05,194 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] [2020-12-22 06:00:05,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:00:05,194 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:05,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:05,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1079362006, now seen corresponding path program 1 times [2020-12-22 06:00:05,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:05,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232769143] [2020-12-22 06:00:05,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:05,279 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 06:00:05,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232769143] [2020-12-22 06:00:05,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:05,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:05,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702344661] [2020-12-22 06:00:05,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:05,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:05,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:05,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:05,282 INFO L87 Difference]: Start difference. First operand 4741 states and 8904 transitions. Second operand 4 states. [2020-12-22 06:00:05,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:05,910 INFO L93 Difference]: Finished difference Result 14129 states and 26581 transitions. [2020-12-22 06:00:05,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:05,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-12-22 06:00:05,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:05,937 INFO L225 Difference]: With dead ends: 14129 [2020-12-22 06:00:05,938 INFO L226 Difference]: Without dead ends: 9410 [2020-12-22 06:00:05,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 06:00:05,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9410 states. [2020-12-22 06:00:06,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9410 to 4741. [2020-12-22 06:00:06,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4741 states. [2020-12-22 06:00:06,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4741 states to 4741 states and 8898 transitions. [2020-12-22 06:00:06,224 INFO L78 Accepts]: Start accepts. Automaton has 4741 states and 8898 transitions. Word has length 51 [2020-12-22 06:00:06,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:06,226 INFO L481 AbstractCegarLoop]: Abstraction has 4741 states and 8898 transitions. [2020-12-22 06:00:06,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:06,226 INFO L276 IsEmpty]: Start isEmpty. Operand 4741 states and 8898 transitions. [2020-12-22 06:00:06,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 06:00:06,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:06,227 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] [2020-12-22 06:00:06,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:00:06,228 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:06,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:06,228 INFO L82 PathProgramCache]: Analyzing trace with hash -883450705, now seen corresponding path program 1 times [2020-12-22 06:00:06,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:06,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053450049] [2020-12-22 06:00:06,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:06,362 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 06:00:06,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053450049] [2020-12-22 06:00:06,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:06,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:00:06,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311706759] [2020-12-22 06:00:06,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:00:06,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:06,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:00:06,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:00:06,370 INFO L87 Difference]: Start difference. First operand 4741 states and 8898 transitions. Second operand 7 states. [2020-12-22 06:00:07,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:07,563 INFO L93 Difference]: Finished difference Result 23456 states and 44146 transitions. [2020-12-22 06:00:07,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:07,564 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-12-22 06:00:07,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:07,608 INFO L225 Difference]: With dead ends: 23456 [2020-12-22 06:00:07,608 INFO L226 Difference]: Without dead ends: 18743 [2020-12-22 06:00:07,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:00:07,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18743 states. [2020-12-22 06:00:07,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18743 to 4743. [2020-12-22 06:00:07,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4743 states. [2020-12-22 06:00:08,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4743 states to 4743 states and 8899 transitions. [2020-12-22 06:00:08,122 INFO L78 Accepts]: Start accepts. Automaton has 4743 states and 8899 transitions. Word has length 52 [2020-12-22 06:00:08,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:08,123 INFO L481 AbstractCegarLoop]: Abstraction has 4743 states and 8899 transitions. [2020-12-22 06:00:08,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:00:08,123 INFO L276 IsEmpty]: Start isEmpty. Operand 4743 states and 8899 transitions. [2020-12-22 06:00:08,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:00:08,124 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:08,124 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:08,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:00:08,125 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:08,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:08,126 INFO L82 PathProgramCache]: Analyzing trace with hash -505706860, now seen corresponding path program 1 times [2020-12-22 06:00:08,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:08,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034303302] [2020-12-22 06:00:08,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:08,204 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 06:00:08,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034303302] [2020-12-22 06:00:08,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:08,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:00:08,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433242752] [2020-12-22 06:00:08,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:00:08,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:08,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:00:08,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:00:08,206 INFO L87 Difference]: Start difference. First operand 4743 states and 8899 transitions. Second operand 7 states. [2020-12-22 06:00:09,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:09,137 INFO L93 Difference]: Finished difference Result 23448 states and 44125 transitions. [2020-12-22 06:00:09,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:09,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-12-22 06:00:09,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:09,169 INFO L225 Difference]: With dead ends: 23448 [2020-12-22 06:00:09,169 INFO L226 Difference]: Without dead ends: 18738 [2020-12-22 06:00:09,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:00:09,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18738 states. [2020-12-22 06:00:09,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18738 to 4748. [2020-12-22 06:00:09,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4748 states. [2020-12-22 06:00:09,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4748 states to 4748 states and 8907 transitions. [2020-12-22 06:00:09,495 INFO L78 Accepts]: Start accepts. Automaton has 4748 states and 8907 transitions. Word has length 54 [2020-12-22 06:00:09,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:09,496 INFO L481 AbstractCegarLoop]: Abstraction has 4748 states and 8907 transitions. [2020-12-22 06:00:09,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:00:09,496 INFO L276 IsEmpty]: Start isEmpty. Operand 4748 states and 8907 transitions. [2020-12-22 06:00:09,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:00:09,497 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:09,497 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] [2020-12-22 06:00:09,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:00:09,497 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:09,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:09,498 INFO L82 PathProgramCache]: Analyzing trace with hash -579597521, now seen corresponding path program 1 times [2020-12-22 06:00:09,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:09,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262299682] [2020-12-22 06:00:09,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:09,547 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 06:00:09,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262299682] [2020-12-22 06:00:09,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:09,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:00:09,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545090094] [2020-12-22 06:00:09,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:09,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:09,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:09,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:09,549 INFO L87 Difference]: Start difference. First operand 4748 states and 8907 transitions. Second operand 3 states. [2020-12-22 06:00:09,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:09,733 INFO L93 Difference]: Finished difference Result 9438 states and 17732 transitions. [2020-12-22 06:00:09,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:09,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 06:00:09,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:09,740 INFO L225 Difference]: With dead ends: 9438 [2020-12-22 06:00:09,740 INFO L226 Difference]: Without dead ends: 4727 [2020-12-22 06:00:09,748 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 06:00:09,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4727 states. [2020-12-22 06:00:10,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4727 to 4727. [2020-12-22 06:00:10,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4727 states. [2020-12-22 06:00:10,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4727 states to 4727 states and 8871 transitions. [2020-12-22 06:00:10,089 INFO L78 Accepts]: Start accepts. Automaton has 4727 states and 8871 transitions. Word has length 56 [2020-12-22 06:00:10,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:10,089 INFO L481 AbstractCegarLoop]: Abstraction has 4727 states and 8871 transitions. [2020-12-22 06:00:10,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:10,090 INFO L276 IsEmpty]: Start isEmpty. Operand 4727 states and 8871 transitions. [2020-12-22 06:00:10,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 06:00:10,091 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:10,091 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 06:00:10,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:00:10,092 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:10,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:10,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1207192682, now seen corresponding path program 1 times [2020-12-22 06:00:10,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:10,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53179871] [2020-12-22 06:00:10,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:10,189 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 06:00:10,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53179871] [2020-12-22 06:00:10,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:10,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:10,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901678041] [2020-12-22 06:00:10,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:10,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:10,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:10,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:10,192 INFO L87 Difference]: Start difference. First operand 4727 states and 8871 transitions. Second operand 5 states. [2020-12-22 06:00:10,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:10,513 INFO L93 Difference]: Finished difference Result 9387 states and 17654 transitions. [2020-12-22 06:00:10,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:10,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-12-22 06:00:10,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:10,522 INFO L225 Difference]: With dead ends: 9387 [2020-12-22 06:00:10,522 INFO L226 Difference]: Without dead ends: 4721 [2020-12-22 06:00:10,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 06:00:10,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4721 states. [2020-12-22 06:00:10,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4721 to 4721. [2020-12-22 06:00:10,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4721 states. [2020-12-22 06:00:10,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4721 states to 4721 states and 8862 transitions. [2020-12-22 06:00:10,731 INFO L78 Accepts]: Start accepts. Automaton has 4721 states and 8862 transitions. Word has length 58 [2020-12-22 06:00:10,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:10,731 INFO L481 AbstractCegarLoop]: Abstraction has 4721 states and 8862 transitions. [2020-12-22 06:00:10,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:10,731 INFO L276 IsEmpty]: Start isEmpty. Operand 4721 states and 8862 transitions. [2020-12-22 06:00:10,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 06:00:10,732 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:10,733 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 06:00:10,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:00:10,733 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:10,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:10,733 INFO L82 PathProgramCache]: Analyzing trace with hash 500637674, now seen corresponding path program 1 times [2020-12-22 06:00:10,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:10,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108550631] [2020-12-22 06:00:10,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:10,788 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 06:00:10,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108550631] [2020-12-22 06:00:10,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:10,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:10,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430334264] [2020-12-22 06:00:10,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:10,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:10,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:10,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:10,791 INFO L87 Difference]: Start difference. First operand 4721 states and 8862 transitions. Second operand 4 states. [2020-12-22 06:00:10,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:10,981 INFO L93 Difference]: Finished difference Result 9381 states and 17645 transitions. [2020-12-22 06:00:10,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:00:10,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-12-22 06:00:10,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:10,987 INFO L225 Difference]: With dead ends: 9381 [2020-12-22 06:00:10,987 INFO L226 Difference]: Without dead ends: 4707 [2020-12-22 06:00:10,993 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 06:00:11,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4707 states. [2020-12-22 06:00:11,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4707 to 4707. [2020-12-22 06:00:11,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4707 states. [2020-12-22 06:00:11,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4707 states to 4707 states and 8841 transitions. [2020-12-22 06:00:11,231 INFO L78 Accepts]: Start accepts. Automaton has 4707 states and 8841 transitions. Word has length 58 [2020-12-22 06:00:11,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:11,233 INFO L481 AbstractCegarLoop]: Abstraction has 4707 states and 8841 transitions. [2020-12-22 06:00:11,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:11,233 INFO L276 IsEmpty]: Start isEmpty. Operand 4707 states and 8841 transitions. [2020-12-22 06:00:11,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 06:00:11,238 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:11,238 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 06:00:11,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:00:11,239 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:11,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:11,239 INFO L82 PathProgramCache]: Analyzing trace with hash -999754595, now seen corresponding path program 1 times [2020-12-22 06:00:11,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:11,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644985531] [2020-12-22 06:00:11,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:11,322 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 06:00:11,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644985531] [2020-12-22 06:00:11,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:11,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:00:11,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248918612] [2020-12-22 06:00:11,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:11,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:11,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:11,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:11,325 INFO L87 Difference]: Start difference. First operand 4707 states and 8841 transitions. Second operand 6 states. [2020-12-22 06:00:11,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:11,739 INFO L93 Difference]: Finished difference Result 9381 states and 17640 transitions. [2020-12-22 06:00:11,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:11,739 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-12-22 06:00:11,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:11,746 INFO L225 Difference]: With dead ends: 9381 [2020-12-22 06:00:11,747 INFO L226 Difference]: Without dead ends: 4727 [2020-12-22 06:00:11,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:00:11,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4727 states. [2020-12-22 06:00:11,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4727 to 4707. [2020-12-22 06:00:11,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4707 states. [2020-12-22 06:00:11,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4707 states to 4707 states and 8840 transitions. [2020-12-22 06:00:11,978 INFO L78 Accepts]: Start accepts. Automaton has 4707 states and 8840 transitions. Word has length 59 [2020-12-22 06:00:11,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:11,978 INFO L481 AbstractCegarLoop]: Abstraction has 4707 states and 8840 transitions. [2020-12-22 06:00:11,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:11,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4707 states and 8840 transitions. [2020-12-22 06:00:11,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:00:11,980 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:11,980 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 06:00:11,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:00:11,980 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:11,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:11,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1314151215, now seen corresponding path program 1 times [2020-12-22 06:00:11,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:11,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541446615] [2020-12-22 06:00:11,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:12,050 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 06:00:12,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541446615] [2020-12-22 06:00:12,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:12,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:00:12,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97976061] [2020-12-22 06:00:12,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:12,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:12,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:12,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:12,053 INFO L87 Difference]: Start difference. First operand 4707 states and 8840 transitions. Second operand 6 states. [2020-12-22 06:00:12,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:12,387 INFO L93 Difference]: Finished difference Result 9371 states and 17621 transitions. [2020-12-22 06:00:12,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:12,387 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-12-22 06:00:12,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:12,393 INFO L225 Difference]: With dead ends: 9371 [2020-12-22 06:00:12,393 INFO L226 Difference]: Without dead ends: 4722 [2020-12-22 06:00:12,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:00:12,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4722 states. [2020-12-22 06:00:12,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4722 to 4707. [2020-12-22 06:00:12,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4707 states. [2020-12-22 06:00:12,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4707 states to 4707 states and 8839 transitions. [2020-12-22 06:00:12,603 INFO L78 Accepts]: Start accepts. Automaton has 4707 states and 8839 transitions. Word has length 60 [2020-12-22 06:00:12,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:12,603 INFO L481 AbstractCegarLoop]: Abstraction has 4707 states and 8839 transitions. [2020-12-22 06:00:12,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:12,603 INFO L276 IsEmpty]: Start isEmpty. Operand 4707 states and 8839 transitions. [2020-12-22 06:00:12,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:00:12,604 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:12,604 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 06:00:12,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:00:12,604 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:12,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:12,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1263226962, now seen corresponding path program 1 times [2020-12-22 06:00:12,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:12,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410436747] [2020-12-22 06:00:12,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:12,678 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 06:00:12,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410436747] [2020-12-22 06:00:12,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:12,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:00:12,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729241343] [2020-12-22 06:00:12,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:12,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:12,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:12,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:12,680 INFO L87 Difference]: Start difference. First operand 4707 states and 8839 transitions. Second operand 3 states. [2020-12-22 06:00:13,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:13,287 INFO L93 Difference]: Finished difference Result 11015 states and 20737 transitions. [2020-12-22 06:00:13,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:13,288 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 06:00:13,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:13,302 INFO L225 Difference]: With dead ends: 11015 [2020-12-22 06:00:13,302 INFO L226 Difference]: Without dead ends: 8636 [2020-12-22 06:00:13,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 06:00:13,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8636 states. [2020-12-22 06:00:13,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8636 to 6657. [2020-12-22 06:00:13,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6657 states. [2020-12-22 06:00:13,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6657 states to 6657 states and 12511 transitions. [2020-12-22 06:00:13,682 INFO L78 Accepts]: Start accepts. Automaton has 6657 states and 12511 transitions. Word has length 61 [2020-12-22 06:00:13,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:13,682 INFO L481 AbstractCegarLoop]: Abstraction has 6657 states and 12511 transitions. [2020-12-22 06:00:13,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:13,682 INFO L276 IsEmpty]: Start isEmpty. Operand 6657 states and 12511 transitions. [2020-12-22 06:00:13,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 06:00:13,687 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:13,687 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 06:00:13,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:00:13,687 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:13,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:13,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1157513391, now seen corresponding path program 1 times [2020-12-22 06:00:13,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:13,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625276085] [2020-12-22 06:00:13,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:13,770 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 06:00:13,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625276085] [2020-12-22 06:00:13,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:13,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:13,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481274398] [2020-12-22 06:00:13,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:13,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:13,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:13,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:13,772 INFO L87 Difference]: Start difference. First operand 6657 states and 12511 transitions. Second operand 5 states. [2020-12-22 06:00:14,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:14,547 INFO L93 Difference]: Finished difference Result 13241 states and 24726 transitions. [2020-12-22 06:00:14,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:00:14,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-12-22 06:00:14,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:14,561 INFO L225 Difference]: With dead ends: 13241 [2020-12-22 06:00:14,561 INFO L226 Difference]: Without dead ends: 7778 [2020-12-22 06:00:14,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 06:00:14,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7778 states. [2020-12-22 06:00:14,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7778 to 5492. [2020-12-22 06:00:14,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5492 states. [2020-12-22 06:00:15,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5492 states to 5492 states and 10253 transitions. [2020-12-22 06:00:15,007 INFO L78 Accepts]: Start accepts. Automaton has 5492 states and 10253 transitions. Word has length 80 [2020-12-22 06:00:15,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:15,008 INFO L481 AbstractCegarLoop]: Abstraction has 5492 states and 10253 transitions. [2020-12-22 06:00:15,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:15,008 INFO L276 IsEmpty]: Start isEmpty. Operand 5492 states and 10253 transitions. [2020-12-22 06:00:15,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 06:00:15,011 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:15,011 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 06:00:15,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:00:15,011 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:15,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:15,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1737547905, now seen corresponding path program 1 times [2020-12-22 06:00:15,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:15,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379156540] [2020-12-22 06:00:15,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:15,103 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 06:00:15,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379156540] [2020-12-22 06:00:15,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:15,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:15,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466061688] [2020-12-22 06:00:15,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:15,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:15,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:15,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:15,105 INFO L87 Difference]: Start difference. First operand 5492 states and 10253 transitions. Second operand 6 states. [2020-12-22 06:00:19,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:19,681 INFO L93 Difference]: Finished difference Result 37141 states and 69317 transitions. [2020-12-22 06:00:19,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:00:19,682 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-12-22 06:00:19,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:19,722 INFO L225 Difference]: With dead ends: 37141 [2020-12-22 06:00:19,722 INFO L226 Difference]: Without dead ends: 31734 [2020-12-22 06:00:19,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:00:19,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31734 states. [2020-12-22 06:00:20,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31734 to 5513. [2020-12-22 06:00:20,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5513 states. [2020-12-22 06:00:20,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5513 states to 5513 states and 10274 transitions. [2020-12-22 06:00:20,178 INFO L78 Accepts]: Start accepts. Automaton has 5513 states and 10274 transitions. Word has length 81 [2020-12-22 06:00:20,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:20,179 INFO L481 AbstractCegarLoop]: Abstraction has 5513 states and 10274 transitions. [2020-12-22 06:00:20,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:20,179 INFO L276 IsEmpty]: Start isEmpty. Operand 5513 states and 10274 transitions. [2020-12-22 06:00:20,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:00:20,181 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:20,182 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 06:00:20,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:00:20,182 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:20,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:20,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1823236591, now seen corresponding path program 1 times [2020-12-22 06:00:20,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:20,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414739688] [2020-12-22 06:00:20,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:20,267 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 06:00:20,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414739688] [2020-12-22 06:00:20,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:20,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:00:20,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441335247] [2020-12-22 06:00:20,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:00:20,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:20,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:00:20,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:00:20,271 INFO L87 Difference]: Start difference. First operand 5513 states and 10274 transitions. Second operand 7 states. [2020-12-22 06:00:25,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:25,544 INFO L93 Difference]: Finished difference Result 21454 states and 39974 transitions. [2020-12-22 06:00:25,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 06:00:25,544 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-12-22 06:00:25,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:25,563 INFO L225 Difference]: With dead ends: 21454 [2020-12-22 06:00:25,563 INFO L226 Difference]: Without dead ends: 16013 [2020-12-22 06:00:25,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-12-22 06:00:25,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16013 states. [2020-12-22 06:00:25,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16013 to 7112. [2020-12-22 06:00:25,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7112 states. [2020-12-22 06:00:26,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7112 states to 7112 states and 12997 transitions. [2020-12-22 06:00:26,003 INFO L78 Accepts]: Start accepts. Automaton has 7112 states and 12997 transitions. Word has length 82 [2020-12-22 06:00:26,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:26,003 INFO L481 AbstractCegarLoop]: Abstraction has 7112 states and 12997 transitions. [2020-12-22 06:00:26,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:00:26,004 INFO L276 IsEmpty]: Start isEmpty. Operand 7112 states and 12997 transitions. [2020-12-22 06:00:26,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 06:00:26,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:26,006 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] [2020-12-22 06:00:26,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:00:26,007 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:26,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:26,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1870240361, now seen corresponding path program 1 times [2020-12-22 06:00:26,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:26,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887860505] [2020-12-22 06:00:26,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:26,109 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 06:00:26,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887860505] [2020-12-22 06:00:26,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:26,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:00:26,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627116740] [2020-12-22 06:00:26,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:26,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:26,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:26,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:26,112 INFO L87 Difference]: Start difference. First operand 7112 states and 12997 transitions. Second operand 4 states. [2020-12-22 06:00:27,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:27,938 INFO L93 Difference]: Finished difference Result 19516 states and 35963 transitions. [2020-12-22 06:00:27,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:00:27,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-12-22 06:00:27,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:27,952 INFO L225 Difference]: With dead ends: 19516 [2020-12-22 06:00:27,952 INFO L226 Difference]: Without dead ends: 12474 [2020-12-22 06:00:27,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:27,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12474 states. [2020-12-22 06:00:28,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12474 to 7112. [2020-12-22 06:00:28,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7112 states. [2020-12-22 06:00:28,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7112 states to 7112 states and 12972 transitions. [2020-12-22 06:00:28,373 INFO L78 Accepts]: Start accepts. Automaton has 7112 states and 12972 transitions. Word has length 83 [2020-12-22 06:00:28,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:28,374 INFO L481 AbstractCegarLoop]: Abstraction has 7112 states and 12972 transitions. [2020-12-22 06:00:28,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:28,374 INFO L276 IsEmpty]: Start isEmpty. Operand 7112 states and 12972 transitions. [2020-12-22 06:00:28,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 06:00:28,376 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:28,376 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] [2020-12-22 06:00:28,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:00:28,377 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:28,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:28,377 INFO L82 PathProgramCache]: Analyzing trace with hash 369307767, now seen corresponding path program 1 times [2020-12-22 06:00:28,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:28,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335072766] [2020-12-22 06:00:28,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:28,469 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 06:00:28,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335072766] [2020-12-22 06:00:28,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:28,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:00:28,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337913745] [2020-12-22 06:00:28,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:28,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:28,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:28,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:28,472 INFO L87 Difference]: Start difference. First operand 7112 states and 12972 transitions. Second operand 4 states. [2020-12-22 06:00:30,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:30,273 INFO L93 Difference]: Finished difference Result 19516 states and 35914 transitions. [2020-12-22 06:00:30,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:00:30,274 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-12-22 06:00:30,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:30,285 INFO L225 Difference]: With dead ends: 19516 [2020-12-22 06:00:30,286 INFO L226 Difference]: Without dead ends: 12474 [2020-12-22 06:00:30,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:30,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12474 states. [2020-12-22 06:00:30,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12474 to 7112. [2020-12-22 06:00:30,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7112 states. [2020-12-22 06:00:30,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7112 states to 7112 states and 12947 transitions. [2020-12-22 06:00:30,710 INFO L78 Accepts]: Start accepts. Automaton has 7112 states and 12947 transitions. Word has length 85 [2020-12-22 06:00:30,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:30,710 INFO L481 AbstractCegarLoop]: Abstraction has 7112 states and 12947 transitions. [2020-12-22 06:00:30,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:30,710 INFO L276 IsEmpty]: Start isEmpty. Operand 7112 states and 12947 transitions. [2020-12-22 06:00:30,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 06:00:30,712 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:30,712 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, 1] [2020-12-22 06:00:30,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:00:30,713 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:30,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:30,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1801240119, now seen corresponding path program 1 times [2020-12-22 06:00:30,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:30,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237352764] [2020-12-22 06:00:30,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:30,803 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 06:00:30,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237352764] [2020-12-22 06:00:30,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:30,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:30,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67662809] [2020-12-22 06:00:30,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:30,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:30,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:30,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:30,805 INFO L87 Difference]: Start difference. First operand 7112 states and 12947 transitions. Second operand 6 states. [2020-12-22 06:00:38,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:38,941 INFO L93 Difference]: Finished difference Result 84216 states and 153983 transitions. [2020-12-22 06:00:38,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 06:00:38,943 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-12-22 06:00:38,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:39,175 INFO L225 Difference]: With dead ends: 84216 [2020-12-22 06:00:39,176 INFO L226 Difference]: Without dead ends: 77192 [2020-12-22 06:00:39,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-12-22 06:00:39,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77192 states. [2020-12-22 06:00:40,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77192 to 14176. [2020-12-22 06:00:40,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14176 states. [2020-12-22 06:00:40,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14176 states to 14176 states and 25838 transitions. [2020-12-22 06:00:40,473 INFO L78 Accepts]: Start accepts. Automaton has 14176 states and 25838 transitions. Word has length 87 [2020-12-22 06:00:40,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:40,474 INFO L481 AbstractCegarLoop]: Abstraction has 14176 states and 25838 transitions. [2020-12-22 06:00:40,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:40,474 INFO L276 IsEmpty]: Start isEmpty. Operand 14176 states and 25838 transitions. [2020-12-22 06:00:40,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 06:00:40,478 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:40,478 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 06:00:40,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:00:40,478 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:40,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:40,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1488973642, now seen corresponding path program 1 times [2020-12-22 06:00:40,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:40,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105284858] [2020-12-22 06:00:40,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:40,555 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 06:00:40,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105284858] [2020-12-22 06:00:40,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:40,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:40,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110842491] [2020-12-22 06:00:40,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:40,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:40,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:40,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:40,557 INFO L87 Difference]: Start difference. First operand 14176 states and 25838 transitions. Second operand 6 states. [2020-12-22 06:00:54,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:54,466 INFO L93 Difference]: Finished difference Result 159011 states and 291399 transitions. [2020-12-22 06:00:54,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 06:00:54,467 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-12-22 06:00:54,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:54,695 INFO L225 Difference]: With dead ends: 159011 [2020-12-22 06:00:54,695 INFO L226 Difference]: Without dead ends: 144978 [2020-12-22 06:00:54,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-12-22 06:00:55,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144978 states. [2020-12-22 06:00:57,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144978 to 28144. [2020-12-22 06:00:57,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28144 states. [2020-12-22 06:00:57,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28144 states to 28144 states and 51365 transitions. [2020-12-22 06:00:57,492 INFO L78 Accepts]: Start accepts. Automaton has 28144 states and 51365 transitions. Word has length 88 [2020-12-22 06:00:57,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:57,493 INFO L481 AbstractCegarLoop]: Abstraction has 28144 states and 51365 transitions. [2020-12-22 06:00:57,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:57,493 INFO L276 IsEmpty]: Start isEmpty. Operand 28144 states and 51365 transitions. [2020-12-22 06:00:57,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 06:00:57,498 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:57,498 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 06:00:57,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:00:57,498 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:57,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:57,499 INFO L82 PathProgramCache]: Analyzing trace with hash 971379675, now seen corresponding path program 1 times [2020-12-22 06:00:57,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:57,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988109375] [2020-12-22 06:00:57,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:57,557 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 06:00:57,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988109375] [2020-12-22 06:00:57,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:57,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:57,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782694526] [2020-12-22 06:00:57,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:57,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:57,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:57,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:57,562 INFO L87 Difference]: Start difference. First operand 28144 states and 51365 transitions. Second operand 5 states. [2020-12-22 06:00:59,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:59,085 INFO L93 Difference]: Finished difference Result 49156 states and 89748 transitions. [2020-12-22 06:00:59,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:00:59,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-12-22 06:00:59,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:59,109 INFO L225 Difference]: With dead ends: 49156 [2020-12-22 06:00:59,109 INFO L226 Difference]: Without dead ends: 21114 [2020-12-22 06:00:59,123 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 06:00:59,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21114 states. [2020-12-22 06:01:00,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21114 to 21099. [2020-12-22 06:01:00,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21099 states. [2020-12-22 06:01:00,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21099 states to 21099 states and 38492 transitions. [2020-12-22 06:01:00,583 INFO L78 Accepts]: Start accepts. Automaton has 21099 states and 38492 transitions. Word has length 88 [2020-12-22 06:01:00,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:00,583 INFO L481 AbstractCegarLoop]: Abstraction has 21099 states and 38492 transitions. [2020-12-22 06:01:00,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:00,583 INFO L276 IsEmpty]: Start isEmpty. Operand 21099 states and 38492 transitions. [2020-12-22 06:01:00,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 06:01:00,587 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:00,588 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:00,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:01:00,588 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:00,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:00,588 INFO L82 PathProgramCache]: Analyzing trace with hash 133532183, now seen corresponding path program 1 times [2020-12-22 06:01:00,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:00,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073217792] [2020-12-22 06:01:00,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:00,670 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 06:01:00,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073217792] [2020-12-22 06:01:00,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:00,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:01:00,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241941301] [2020-12-22 06:01:00,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:01:00,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:00,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:01:00,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:00,672 INFO L87 Difference]: Start difference. First operand 21099 states and 38492 transitions. Second operand 5 states. [2020-12-22 06:01:07,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:07,276 INFO L93 Difference]: Finished difference Result 84841 states and 154444 transitions. [2020-12-22 06:01:07,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:01:07,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-12-22 06:01:07,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:07,354 INFO L225 Difference]: With dead ends: 84841 [2020-12-22 06:01:07,354 INFO L226 Difference]: Without dead ends: 63932 [2020-12-22 06:01:07,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 06:01:07,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63932 states. [2020-12-22 06:01:08,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63932 to 21177. [2020-12-22 06:01:08,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21177 states. [2020-12-22 06:01:08,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21177 states to 21177 states and 38570 transitions. [2020-12-22 06:01:09,000 INFO L78 Accepts]: Start accepts. Automaton has 21177 states and 38570 transitions. Word has length 89 [2020-12-22 06:01:09,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:09,000 INFO L481 AbstractCegarLoop]: Abstraction has 21177 states and 38570 transitions. [2020-12-22 06:01:09,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:09,000 INFO L276 IsEmpty]: Start isEmpty. Operand 21177 states and 38570 transitions. [2020-12-22 06:01:09,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 06:01:09,004 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:09,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:09,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:01:09,005 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:09,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:09,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1184496124, now seen corresponding path program 1 times [2020-12-22 06:01:09,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:09,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341491559] [2020-12-22 06:01:09,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:09,069 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 06:01:09,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341491559] [2020-12-22 06:01:09,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:09,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:01:09,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825623319] [2020-12-22 06:01:09,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:01:09,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:09,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:01:09,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:09,071 INFO L87 Difference]: Start difference. First operand 21177 states and 38570 transitions. Second operand 5 states. [2020-12-22 06:01:10,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:10,000 INFO L93 Difference]: Finished difference Result 28137 states and 51266 transitions. [2020-12-22 06:01:10,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:01:10,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-12-22 06:01:10,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:10,008 INFO L225 Difference]: With dead ends: 28137 [2020-12-22 06:01:10,009 INFO L226 Difference]: Without dead ends: 6990 [2020-12-22 06:01:10,020 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 06:01:10,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6990 states. [2020-12-22 06:01:10,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6990 to 6990. [2020-12-22 06:01:10,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6990 states. [2020-12-22 06:01:10,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6990 states to 6990 states and 12731 transitions. [2020-12-22 06:01:10,630 INFO L78 Accepts]: Start accepts. Automaton has 6990 states and 12731 transitions. Word has length 89 [2020-12-22 06:01:10,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:10,630 INFO L481 AbstractCegarLoop]: Abstraction has 6990 states and 12731 transitions. [2020-12-22 06:01:10,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:10,630 INFO L276 IsEmpty]: Start isEmpty. Operand 6990 states and 12731 transitions. [2020-12-22 06:01:10,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 06:01:10,631 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:10,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:10,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 06:01:10,631 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:10,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:10,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1700186788, now seen corresponding path program 1 times [2020-12-22 06:01:10,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:10,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462340546] [2020-12-22 06:01:10,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:10,694 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 06:01:10,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462340546] [2020-12-22 06:01:10,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:10,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:01:10,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535656484] [2020-12-22 06:01:10,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:10,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:10,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:10,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:10,696 INFO L87 Difference]: Start difference. First operand 6990 states and 12731 transitions. Second operand 4 states. [2020-12-22 06:01:13,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:13,404 INFO L93 Difference]: Finished difference Result 16828 states and 30797 transitions. [2020-12-22 06:01:13,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:13,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-12-22 06:01:13,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:13,416 INFO L225 Difference]: With dead ends: 16828 [2020-12-22 06:01:13,416 INFO L226 Difference]: Without dead ends: 9904 [2020-12-22 06:01:13,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:13,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9904 states. [2020-12-22 06:01:14,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9904 to 6884. [2020-12-22 06:01:14,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6884 states. [2020-12-22 06:01:14,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6884 states to 6884 states and 12497 transitions. [2020-12-22 06:01:14,068 INFO L78 Accepts]: Start accepts. Automaton has 6884 states and 12497 transitions. Word has length 90 [2020-12-22 06:01:14,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:14,068 INFO L481 AbstractCegarLoop]: Abstraction has 6884 states and 12497 transitions. [2020-12-22 06:01:14,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:14,068 INFO L276 IsEmpty]: Start isEmpty. Operand 6884 states and 12497 transitions. [2020-12-22 06:01:14,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 06:01:14,069 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:14,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:14,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 06:01:14,070 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:14,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:14,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1379233558, now seen corresponding path program 1 times [2020-12-22 06:01:14,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:14,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272159522] [2020-12-22 06:01:14,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:14,162 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 06:01:14,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272159522] [2020-12-22 06:01:14,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:14,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:01:14,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706969690] [2020-12-22 06:01:14,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:01:14,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:14,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:01:14,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:01:14,164 INFO L87 Difference]: Start difference. First operand 6884 states and 12497 transitions. Second operand 6 states. [2020-12-22 06:01:17,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:17,599 INFO L93 Difference]: Finished difference Result 34813 states and 63758 transitions. [2020-12-22 06:01:17,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:01:17,600 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2020-12-22 06:01:17,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:17,638 INFO L225 Difference]: With dead ends: 34813 [2020-12-22 06:01:17,638 INFO L226 Difference]: Without dead ends: 30617 [2020-12-22 06:01:17,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:01:17,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30617 states. [2020-12-22 06:01:18,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30617 to 6932. [2020-12-22 06:01:18,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6932 states. [2020-12-22 06:01:18,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6932 states to 6932 states and 12545 transitions. [2020-12-22 06:01:18,317 INFO L78 Accepts]: Start accepts. Automaton has 6932 states and 12545 transitions. Word has length 92 [2020-12-22 06:01:18,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:18,318 INFO L481 AbstractCegarLoop]: Abstraction has 6932 states and 12545 transitions. [2020-12-22 06:01:18,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:01:18,318 INFO L276 IsEmpty]: Start isEmpty. Operand 6932 states and 12545 transitions. [2020-12-22 06:01:18,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 06:01:18,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:18,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:18,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 06:01:18,319 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:18,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:18,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1039461537, now seen corresponding path program 1 times [2020-12-22 06:01:18,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:18,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581402608] [2020-12-22 06:01:18,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:18,395 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 06:01:18,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581402608] [2020-12-22 06:01:18,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:18,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:01:18,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089875387] [2020-12-22 06:01:18,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:01:18,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:18,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:01:18,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:01:18,397 INFO L87 Difference]: Start difference. First operand 6932 states and 12545 transitions. Second operand 6 states. [2020-12-22 06:01:21,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:21,470 INFO L93 Difference]: Finished difference Result 24737 states and 44875 transitions. [2020-12-22 06:01:21,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:01:21,471 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-12-22 06:01:21,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:21,493 INFO L225 Difference]: With dead ends: 24737 [2020-12-22 06:01:21,493 INFO L226 Difference]: Without dead ends: 20502 [2020-12-22 06:01:21,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:01:21,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20502 states. [2020-12-22 06:01:22,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20502 to 6868. [2020-12-22 06:01:22,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6868 states. [2020-12-22 06:01:22,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6868 states to 6868 states and 12465 transitions. [2020-12-22 06:01:22,119 INFO L78 Accepts]: Start accepts. Automaton has 6868 states and 12465 transitions. Word has length 93 [2020-12-22 06:01:22,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:22,120 INFO L481 AbstractCegarLoop]: Abstraction has 6868 states and 12465 transitions. [2020-12-22 06:01:22,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:01:22,120 INFO L276 IsEmpty]: Start isEmpty. Operand 6868 states and 12465 transitions. [2020-12-22 06:01:22,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 06:01:22,121 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:22,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:22,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 06:01:22,122 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:22,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:22,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1212399964, now seen corresponding path program 1 times [2020-12-22 06:01:22,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:22,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440349278] [2020-12-22 06:01:22,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:22,199 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 06:01:22,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440349278] [2020-12-22 06:01:22,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:22,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:01:22,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444536447] [2020-12-22 06:01:22,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:01:22,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:22,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:01:22,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:22,201 INFO L87 Difference]: Start difference. First operand 6868 states and 12465 transitions. Second operand 5 states. [2020-12-22 06:01:24,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:24,007 INFO L93 Difference]: Finished difference Result 25796 states and 47031 transitions. [2020-12-22 06:01:24,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:01:24,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-12-22 06:01:24,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:24,031 INFO L225 Difference]: With dead ends: 25796 [2020-12-22 06:01:24,031 INFO L226 Difference]: Without dead ends: 21612 [2020-12-22 06:01:24,038 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 06:01:24,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21612 states. [2020-12-22 06:01:24,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21612 to 10503. [2020-12-22 06:01:24,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10503 states. [2020-12-22 06:01:24,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10503 states to 10503 states and 19056 transitions. [2020-12-22 06:01:24,789 INFO L78 Accepts]: Start accepts. Automaton has 10503 states and 19056 transitions. Word has length 94 [2020-12-22 06:01:24,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:24,789 INFO L481 AbstractCegarLoop]: Abstraction has 10503 states and 19056 transitions. [2020-12-22 06:01:24,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:24,789 INFO L276 IsEmpty]: Start isEmpty. Operand 10503 states and 19056 transitions. [2020-12-22 06:01:24,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 06:01:24,791 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:24,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:24,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 06:01:24,791 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:24,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:24,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1816659536, now seen corresponding path program 1 times [2020-12-22 06:01:24,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:24,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013194335] [2020-12-22 06:01:24,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:24,902 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 06:01:24,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013194335] [2020-12-22 06:01:24,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:24,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:01:24,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307950870] [2020-12-22 06:01:24,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:01:24,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:24,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:01:24,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:24,904 INFO L87 Difference]: Start difference. First operand 10503 states and 19056 transitions. Second operand 5 states. [2020-12-22 06:01:26,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:26,521 INFO L93 Difference]: Finished difference Result 24171 states and 43811 transitions. [2020-12-22 06:01:26,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:01:26,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-12-22 06:01:26,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:26,539 INFO L225 Difference]: With dead ends: 24171 [2020-12-22 06:01:26,539 INFO L226 Difference]: Without dead ends: 16569 [2020-12-22 06:01:26,547 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 06:01:26,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16569 states. [2020-12-22 06:01:27,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16569 to 10528. [2020-12-22 06:01:27,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10528 states. [2020-12-22 06:01:27,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10528 states to 10528 states and 19073 transitions. [2020-12-22 06:01:27,438 INFO L78 Accepts]: Start accepts. Automaton has 10528 states and 19073 transitions. Word has length 96 [2020-12-22 06:01:27,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:27,438 INFO L481 AbstractCegarLoop]: Abstraction has 10528 states and 19073 transitions. [2020-12-22 06:01:27,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:27,438 INFO L276 IsEmpty]: Start isEmpty. Operand 10528 states and 19073 transitions. [2020-12-22 06:01:27,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-22 06:01:27,440 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:27,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:27,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 06:01:27,440 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:27,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:27,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1894588899, now seen corresponding path program 1 times [2020-12-22 06:01:27,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:27,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916787870] [2020-12-22 06:01:27,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:27,528 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 06:01:27,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916787870] [2020-12-22 06:01:27,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:27,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:01:27,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662427200] [2020-12-22 06:01:27,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:01:27,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:27,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:01:27,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:01:27,530 INFO L87 Difference]: Start difference. First operand 10528 states and 19073 transitions. Second operand 6 states. [2020-12-22 06:01:28,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:28,492 INFO L93 Difference]: Finished difference Result 18504 states and 33422 transitions. [2020-12-22 06:01:28,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:01:28,493 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-12-22 06:01:28,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:28,507 INFO L225 Difference]: With dead ends: 18504 [2020-12-22 06:01:28,507 INFO L226 Difference]: Without dead ends: 10543 [2020-12-22 06:01:28,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:01:28,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10543 states. [2020-12-22 06:01:29,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10543 to 10528. [2020-12-22 06:01:29,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10528 states. [2020-12-22 06:01:29,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10528 states to 10528 states and 18893 transitions. [2020-12-22 06:01:29,359 INFO L78 Accepts]: Start accepts. Automaton has 10528 states and 18893 transitions. Word has length 103 [2020-12-22 06:01:29,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:29,359 INFO L481 AbstractCegarLoop]: Abstraction has 10528 states and 18893 transitions. [2020-12-22 06:01:29,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:01:29,359 INFO L276 IsEmpty]: Start isEmpty. Operand 10528 states and 18893 transitions. [2020-12-22 06:01:29,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-22 06:01:29,361 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:29,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:29,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 06:01:29,362 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:29,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:29,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1197851061, now seen corresponding path program 1 times [2020-12-22 06:01:29,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:29,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910855353] [2020-12-22 06:01:29,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:29,433 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 06:01:29,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910855353] [2020-12-22 06:01:29,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:29,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:01:29,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439437706] [2020-12-22 06:01:29,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:01:29,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:29,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:01:29,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:29,435 INFO L87 Difference]: Start difference. First operand 10528 states and 18893 transitions. Second operand 3 states. [2020-12-22 06:01:30,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:30,176 INFO L93 Difference]: Finished difference Result 19689 states and 35315 transitions. [2020-12-22 06:01:30,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:01:30,176 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-12-22 06:01:30,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:30,189 INFO L225 Difference]: With dead ends: 19689 [2020-12-22 06:01:30,190 INFO L226 Difference]: Without dead ends: 10498 [2020-12-22 06:01:30,198 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 06:01:30,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10498 states. [2020-12-22 06:01:31,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10498 to 10498. [2020-12-22 06:01:31,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10498 states. [2020-12-22 06:01:31,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10498 states to 10498 states and 18835 transitions. [2020-12-22 06:01:31,036 INFO L78 Accepts]: Start accepts. Automaton has 10498 states and 18835 transitions. Word has length 104 [2020-12-22 06:01:31,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:31,036 INFO L481 AbstractCegarLoop]: Abstraction has 10498 states and 18835 transitions. [2020-12-22 06:01:31,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:01:31,036 INFO L276 IsEmpty]: Start isEmpty. Operand 10498 states and 18835 transitions. [2020-12-22 06:01:31,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 06:01:31,038 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:31,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:31,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 06:01:31,039 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:31,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:31,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1033362699, now seen corresponding path program 1 times [2020-12-22 06:01:31,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:31,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711852917] [2020-12-22 06:01:31,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:31,116 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 06:01:31,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711852917] [2020-12-22 06:01:31,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:31,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:01:31,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455163192] [2020-12-22 06:01:31,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:01:31,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:31,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:01:31,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:31,118 INFO L87 Difference]: Start difference. First operand 10498 states and 18835 transitions. Second operand 5 states. [2020-12-22 06:01:33,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:33,715 INFO L93 Difference]: Finished difference Result 34306 states and 61560 transitions. [2020-12-22 06:01:33,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:01:33,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-12-22 06:01:33,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:33,744 INFO L225 Difference]: With dead ends: 34306 [2020-12-22 06:01:33,745 INFO L226 Difference]: Without dead ends: 26755 [2020-12-22 06:01:33,754 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 06:01:33,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26755 states. [2020-12-22 06:01:34,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26755 to 10498. [2020-12-22 06:01:34,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10498 states. [2020-12-22 06:01:34,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10498 states to 10498 states and 18821 transitions. [2020-12-22 06:01:34,621 INFO L78 Accepts]: Start accepts. Automaton has 10498 states and 18821 transitions. Word has length 106 [2020-12-22 06:01:34,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:34,622 INFO L481 AbstractCegarLoop]: Abstraction has 10498 states and 18821 transitions. [2020-12-22 06:01:34,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:34,622 INFO L276 IsEmpty]: Start isEmpty. Operand 10498 states and 18821 transitions. [2020-12-22 06:01:34,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 06:01:34,625 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:34,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:34,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 06:01:34,625 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:34,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:34,626 INFO L82 PathProgramCache]: Analyzing trace with hash 718055049, now seen corresponding path program 1 times [2020-12-22 06:01:34,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:34,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221150988] [2020-12-22 06:01:34,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:34,704 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 06:01:34,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221150988] [2020-12-22 06:01:34,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:34,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:01:34,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654407623] [2020-12-22 06:01:34,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:34,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:34,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:34,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:34,706 INFO L87 Difference]: Start difference. First operand 10498 states and 18821 transitions. Second operand 4 states. [2020-12-22 06:01:36,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:36,899 INFO L93 Difference]: Finished difference Result 27214 states and 48984 transitions. [2020-12-22 06:01:36,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:01:36,900 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-12-22 06:01:36,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:36,918 INFO L225 Difference]: With dead ends: 27214 [2020-12-22 06:01:36,919 INFO L226 Difference]: Without dead ends: 16778 [2020-12-22 06:01:36,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:36,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16778 states. [2020-12-22 06:01:37,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16778 to 10498. [2020-12-22 06:01:37,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10498 states. [2020-12-22 06:01:37,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10498 states to 10498 states and 18636 transitions. [2020-12-22 06:01:37,744 INFO L78 Accepts]: Start accepts. Automaton has 10498 states and 18636 transitions. Word has length 106 [2020-12-22 06:01:37,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:37,744 INFO L481 AbstractCegarLoop]: Abstraction has 10498 states and 18636 transitions. [2020-12-22 06:01:37,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:37,744 INFO L276 IsEmpty]: Start isEmpty. Operand 10498 states and 18636 transitions. [2020-12-22 06:01:37,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 06:01:37,746 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:37,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:37,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 06:01:37,747 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:37,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:37,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1651835289, now seen corresponding path program 1 times [2020-12-22 06:01:37,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:37,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743108502] [2020-12-22 06:01:37,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:37,855 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 06:01:37,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743108502] [2020-12-22 06:01:37,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:37,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:01:37,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568541083] [2020-12-22 06:01:37,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:01:37,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:37,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:01:37,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:37,857 INFO L87 Difference]: Start difference. First operand 10498 states and 18636 transitions. Second operand 5 states. [2020-12-22 06:01:39,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:39,685 INFO L93 Difference]: Finished difference Result 17949 states and 32137 transitions. [2020-12-22 06:01:39,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:39,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-12-22 06:01:39,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:39,707 INFO L225 Difference]: With dead ends: 17949 [2020-12-22 06:01:39,707 INFO L226 Difference]: Without dead ends: 17936 [2020-12-22 06:01:39,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:01:39,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17936 states. [2020-12-22 06:01:40,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17936 to 10510. [2020-12-22 06:01:40,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10510 states. [2020-12-22 06:01:40,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10510 states to 10510 states and 18648 transitions. [2020-12-22 06:01:40,707 INFO L78 Accepts]: Start accepts. Automaton has 10510 states and 18648 transitions. Word has length 108 [2020-12-22 06:01:40,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:40,707 INFO L481 AbstractCegarLoop]: Abstraction has 10510 states and 18648 transitions. [2020-12-22 06:01:40,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:40,707 INFO L276 IsEmpty]: Start isEmpty. Operand 10510 states and 18648 transitions. [2020-12-22 06:01:40,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 06:01:40,709 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:40,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:40,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 06:01:40,709 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:40,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:40,710 INFO L82 PathProgramCache]: Analyzing trace with hash -658014004, now seen corresponding path program 1 times [2020-12-22 06:01:40,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:40,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830858102] [2020-12-22 06:01:40,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:40,793 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 06:01:40,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830858102] [2020-12-22 06:01:40,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:40,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:01:40,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100801124] [2020-12-22 06:01:40,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:01:40,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:40,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:01:40,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:40,795 INFO L87 Difference]: Start difference. First operand 10510 states and 18648 transitions. Second operand 5 states. [2020-12-22 06:01:42,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:42,178 INFO L93 Difference]: Finished difference Result 16600 states and 29505 transitions. [2020-12-22 06:01:42,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:01:42,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-12-22 06:01:42,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:42,202 INFO L225 Difference]: With dead ends: 16600 [2020-12-22 06:01:42,202 INFO L226 Difference]: Without dead ends: 16587 [2020-12-22 06:01:42,208 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 06:01:42,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16587 states. [2020-12-22 06:01:43,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16587 to 10640. [2020-12-22 06:01:43,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10640 states. [2020-12-22 06:01:43,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10640 states to 10640 states and 18841 transitions. [2020-12-22 06:01:43,227 INFO L78 Accepts]: Start accepts. Automaton has 10640 states and 18841 transitions. Word has length 110 [2020-12-22 06:01:43,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:43,227 INFO L481 AbstractCegarLoop]: Abstraction has 10640 states and 18841 transitions. [2020-12-22 06:01:43,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:43,228 INFO L276 IsEmpty]: Start isEmpty. Operand 10640 states and 18841 transitions. [2020-12-22 06:01:43,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-22 06:01:43,230 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:43,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:43,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-22 06:01:43,230 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:43,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:43,231 INFO L82 PathProgramCache]: Analyzing trace with hash 123303796, now seen corresponding path program 1 times [2020-12-22 06:01:43,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:43,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878912974] [2020-12-22 06:01:43,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:43,328 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 06:01:43,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878912974] [2020-12-22 06:01:43,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:43,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:01:43,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999702816] [2020-12-22 06:01:43,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:01:43,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:43,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:01:43,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:43,330 INFO L87 Difference]: Start difference. First operand 10640 states and 18841 transitions. Second operand 5 states. [2020-12-22 06:01:45,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:45,659 INFO L93 Difference]: Finished difference Result 26734 states and 47355 transitions. [2020-12-22 06:01:45,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:01:45,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-12-22 06:01:45,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:45,682 INFO L225 Difference]: With dead ends: 26734 [2020-12-22 06:01:45,682 INFO L226 Difference]: Without dead ends: 17511 [2020-12-22 06:01:45,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 06:01:45,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17511 states. [2020-12-22 06:01:46,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17511 to 10640. [2020-12-22 06:01:46,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10640 states. [2020-12-22 06:01:46,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10640 states to 10640 states and 18831 transitions. [2020-12-22 06:01:46,761 INFO L78 Accepts]: Start accepts. Automaton has 10640 states and 18831 transitions. Word has length 117 [2020-12-22 06:01:46,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:46,761 INFO L481 AbstractCegarLoop]: Abstraction has 10640 states and 18831 transitions. [2020-12-22 06:01:46,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:46,761 INFO L276 IsEmpty]: Start isEmpty. Operand 10640 states and 18831 transitions. [2020-12-22 06:01:46,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 06:01:46,764 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:46,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:46,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 06:01:46,764 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:46,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:46,764 INFO L82 PathProgramCache]: Analyzing trace with hash 868549355, now seen corresponding path program 1 times [2020-12-22 06:01:46,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:46,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161811426] [2020-12-22 06:01:46,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:46,840 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 06:01:46,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161811426] [2020-12-22 06:01:46,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:46,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:01:46,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096511745] [2020-12-22 06:01:46,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:01:46,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:46,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:01:46,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:46,842 INFO L87 Difference]: Start difference. First operand 10640 states and 18831 transitions. Second operand 3 states. [2020-12-22 06:01:48,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:48,293 INFO L93 Difference]: Finished difference Result 26222 states and 46602 transitions. [2020-12-22 06:01:48,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:01:48,293 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2020-12-22 06:01:48,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:48,315 INFO L225 Difference]: With dead ends: 26222 [2020-12-22 06:01:48,315 INFO L226 Difference]: Without dead ends: 16999 [2020-12-22 06:01:48,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 06:01:48,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16999 states. [2020-12-22 06:01:49,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16999 to 16986. [2020-12-22 06:01:49,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16986 states. [2020-12-22 06:01:49,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16986 states to 16986 states and 30262 transitions. [2020-12-22 06:01:49,728 INFO L78 Accepts]: Start accepts. Automaton has 16986 states and 30262 transitions. Word has length 118 [2020-12-22 06:01:49,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:49,728 INFO L481 AbstractCegarLoop]: Abstraction has 16986 states and 30262 transitions. [2020-12-22 06:01:49,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:01:49,728 INFO L276 IsEmpty]: Start isEmpty. Operand 16986 states and 30262 transitions. [2020-12-22 06:01:49,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-22 06:01:49,731 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:49,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:49,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-22 06:01:49,731 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:49,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:49,732 INFO L82 PathProgramCache]: Analyzing trace with hash 821094003, now seen corresponding path program 1 times [2020-12-22 06:01:49,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:49,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196052010] [2020-12-22 06:01:49,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:49,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:49,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196052010] [2020-12-22 06:01:49,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:49,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:01:49,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618284054] [2020-12-22 06:01:49,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:01:49,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:49,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:01:49,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:01:49,873 INFO L87 Difference]: Start difference. First operand 16986 states and 30262 transitions. Second operand 7 states. [2020-12-22 06:01:52,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:52,478 INFO L93 Difference]: Finished difference Result 28972 states and 51777 transitions. [2020-12-22 06:01:52,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:01:52,479 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-12-22 06:01:52,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:52,516 INFO L225 Difference]: With dead ends: 28972 [2020-12-22 06:01:52,516 INFO L226 Difference]: Without dead ends: 28959 [2020-12-22 06:01:52,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:01:52,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28959 states. [2020-12-22 06:01:54,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28959 to 17016. [2020-12-22 06:01:54,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17016 states. [2020-12-22 06:01:54,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17016 states to 17016 states and 30287 transitions. [2020-12-22 06:01:54,106 INFO L78 Accepts]: Start accepts. Automaton has 17016 states and 30287 transitions. Word has length 122 [2020-12-22 06:01:54,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:54,107 INFO L481 AbstractCegarLoop]: Abstraction has 17016 states and 30287 transitions. [2020-12-22 06:01:54,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:01:54,107 INFO L276 IsEmpty]: Start isEmpty. Operand 17016 states and 30287 transitions. [2020-12-22 06:01:54,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-22 06:01:54,110 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:54,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:54,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-22 06:01:54,111 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:54,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:54,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1566351915, now seen corresponding path program 1 times [2020-12-22 06:01:54,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:54,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359011750] [2020-12-22 06:01:54,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:54,209 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 06:01:54,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359011750] [2020-12-22 06:01:54,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:54,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:01:54,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765044599] [2020-12-22 06:01:54,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:01:54,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:54,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:01:54,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:54,211 INFO L87 Difference]: Start difference. First operand 17016 states and 30287 transitions. Second operand 5 states. [2020-12-22 06:02:01,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:01,961 INFO L93 Difference]: Finished difference Result 94015 states and 170384 transitions. [2020-12-22 06:02:01,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:02:01,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-12-22 06:02:01,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:02,050 INFO L225 Difference]: With dead ends: 94015 [2020-12-22 06:02:02,050 INFO L226 Difference]: Without dead ends: 79007 [2020-12-22 06:02:02,068 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 06:02:02,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79007 states. [2020-12-22 06:02:05,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79007 to 33256. [2020-12-22 06:02:05,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33256 states. [2020-12-22 06:02:05,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33256 states to 33256 states and 59234 transitions. [2020-12-22 06:02:05,829 INFO L78 Accepts]: Start accepts. Automaton has 33256 states and 59234 transitions. Word has length 141 [2020-12-22 06:02:05,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:05,829 INFO L481 AbstractCegarLoop]: Abstraction has 33256 states and 59234 transitions. [2020-12-22 06:02:05,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:05,829 INFO L276 IsEmpty]: Start isEmpty. Operand 33256 states and 59234 transitions. [2020-12-22 06:02:05,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 06:02:05,835 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:05,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:05,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-12-22 06:02:05,835 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:05,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:05,835 INFO L82 PathProgramCache]: Analyzing trace with hash -351343075, now seen corresponding path program 1 times [2020-12-22 06:02:05,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:05,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110702654] [2020-12-22 06:02:05,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:05,910 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 06:02:05,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110702654] [2020-12-22 06:02:05,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:05,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:02:05,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801108220] [2020-12-22 06:02:05,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:02:05,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:05,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:02:05,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:05,912 INFO L87 Difference]: Start difference. First operand 33256 states and 59234 transitions. Second operand 3 states. [2020-12-22 06:02:11,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:11,460 INFO L93 Difference]: Finished difference Result 82315 states and 147467 transitions. [2020-12-22 06:02:11,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:02:11,460 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-12-22 06:02:11,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:11,524 INFO L225 Difference]: With dead ends: 82315 [2020-12-22 06:02:11,524 INFO L226 Difference]: Without dead ends: 52109 [2020-12-22 06:02:11,544 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 06:02:11,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52109 states. [2020-12-22 06:02:14,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52109 to 32566. [2020-12-22 06:02:14,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32566 states. [2020-12-22 06:02:14,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32566 states to 32566 states and 57844 transitions. [2020-12-22 06:02:14,910 INFO L78 Accepts]: Start accepts. Automaton has 32566 states and 57844 transitions. Word has length 142 [2020-12-22 06:02:14,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:14,910 INFO L481 AbstractCegarLoop]: Abstraction has 32566 states and 57844 transitions. [2020-12-22 06:02:14,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:02:14,910 INFO L276 IsEmpty]: Start isEmpty. Operand 32566 states and 57844 transitions. [2020-12-22 06:02:14,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-22 06:02:14,917 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:14,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:14,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-12-22 06:02:14,918 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:14,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:14,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1833171928, now seen corresponding path program 1 times [2020-12-22 06:02:14,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:14,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325116003] [2020-12-22 06:02:14,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:15,007 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 06:02:15,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325116003] [2020-12-22 06:02:15,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:15,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:15,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577635673] [2020-12-22 06:02:15,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:15,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:15,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:15,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:15,011 INFO L87 Difference]: Start difference. First operand 32566 states and 57844 transitions. Second operand 5 states. [2020-12-22 06:02:19,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:19,914 INFO L93 Difference]: Finished difference Result 73475 states and 128292 transitions. [2020-12-22 06:02:19,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:02:19,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-12-22 06:02:19,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:19,962 INFO L225 Difference]: With dead ends: 73475 [2020-12-22 06:02:19,963 INFO L226 Difference]: Without dead ends: 41183 [2020-12-22 06:02:19,979 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 06:02:20,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41183 states. [2020-12-22 06:02:23,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41183 to 32695. [2020-12-22 06:02:23,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32695 states. [2020-12-22 06:02:23,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32695 states to 32695 states and 57973 transitions. [2020-12-22 06:02:23,323 INFO L78 Accepts]: Start accepts. Automaton has 32695 states and 57973 transitions. Word has length 154 [2020-12-22 06:02:23,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:23,323 INFO L481 AbstractCegarLoop]: Abstraction has 32695 states and 57973 transitions. [2020-12-22 06:02:23,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:23,323 INFO L276 IsEmpty]: Start isEmpty. Operand 32695 states and 57973 transitions. [2020-12-22 06:02:23,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-22 06:02:23,331 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:23,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:23,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-12-22 06:02:23,332 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:23,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:23,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1861672218, now seen corresponding path program 1 times [2020-12-22 06:02:23,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:23,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456638966] [2020-12-22 06:02:23,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:23,424 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 06:02:23,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456638966] [2020-12-22 06:02:23,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:23,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:23,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174394562] [2020-12-22 06:02:23,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:23,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:23,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:23,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:23,426 INFO L87 Difference]: Start difference. First operand 32695 states and 57973 transitions. Second operand 5 states. [2020-12-22 06:02:32,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:32,642 INFO L93 Difference]: Finished difference Result 106538 states and 184109 transitions. [2020-12-22 06:02:32,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:02:32,642 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-12-22 06:02:32,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:32,723 INFO L225 Difference]: With dead ends: 106538 [2020-12-22 06:02:32,724 INFO L226 Difference]: Without dead ends: 73921 [2020-12-22 06:02:32,747 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 06:02:32,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73921 states. [2020-12-22 06:02:36,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73921 to 32781. [2020-12-22 06:02:36,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32781 states. [2020-12-22 06:02:36,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32781 states to 32781 states and 58059 transitions. [2020-12-22 06:02:36,797 INFO L78 Accepts]: Start accepts. Automaton has 32781 states and 58059 transitions. Word has length 154 [2020-12-22 06:02:36,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:36,797 INFO L481 AbstractCegarLoop]: Abstraction has 32781 states and 58059 transitions. [2020-12-22 06:02:36,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:36,798 INFO L276 IsEmpty]: Start isEmpty. Operand 32781 states and 58059 transitions. [2020-12-22 06:02:36,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-22 06:02:36,804 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:36,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:36,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-12-22 06:02:36,805 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:36,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:36,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1322719401, now seen corresponding path program 1 times [2020-12-22 06:02:36,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:36,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194615761] [2020-12-22 06:02:36,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:36,888 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 06:02:36,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194615761] [2020-12-22 06:02:36,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:36,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:02:36,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504162631] [2020-12-22 06:02:36,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:36,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:36,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:36,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:36,890 INFO L87 Difference]: Start difference. First operand 32781 states and 58059 transitions. Second operand 4 states. [2020-12-22 06:02:42,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:42,944 INFO L93 Difference]: Finished difference Result 81852 states and 144246 transitions. [2020-12-22 06:02:42,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:42,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-12-22 06:02:42,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:43,002 INFO L225 Difference]: With dead ends: 81852 [2020-12-22 06:02:43,003 INFO L226 Difference]: Without dead ends: 49140 [2020-12-22 06:02:43,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:43,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49140 states. [2020-12-22 06:02:46,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49140 to 24711. [2020-12-22 06:02:46,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24711 states. [2020-12-22 06:02:46,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24711 states to 24711 states and 43375 transitions. [2020-12-22 06:02:46,179 INFO L78 Accepts]: Start accepts. Automaton has 24711 states and 43375 transitions. Word has length 155 [2020-12-22 06:02:46,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:46,179 INFO L481 AbstractCegarLoop]: Abstraction has 24711 states and 43375 transitions. [2020-12-22 06:02:46,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:46,179 INFO L276 IsEmpty]: Start isEmpty. Operand 24711 states and 43375 transitions. [2020-12-22 06:02:46,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-12-22 06:02:46,190 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:46,190 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:46,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-12-22 06:02:46,190 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:46,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:46,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1061484342, now seen corresponding path program 1 times [2020-12-22 06:02:46,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:46,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992754476] [2020-12-22 06:02:46,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:46,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:46,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992754476] [2020-12-22 06:02:46,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:46,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:46,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202547863] [2020-12-22 06:02:46,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:46,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:46,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:46,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:46,508 INFO L87 Difference]: Start difference. First operand 24711 states and 43375 transitions. Second operand 5 states. [2020-12-22 06:02:54,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:54,155 INFO L93 Difference]: Finished difference Result 71812 states and 126943 transitions. [2020-12-22 06:02:54,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:02:54,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-12-22 06:02:54,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:54,224 INFO L225 Difference]: With dead ends: 71812 [2020-12-22 06:02:54,224 INFO L226 Difference]: Without dead ends: 47371 [2020-12-22 06:02:54,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:54,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47371 states. [2020-12-22 06:02:59,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47371 to 42837. [2020-12-22 06:02:59,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42837 states. [2020-12-22 06:02:59,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42837 states to 42837 states and 76581 transitions. [2020-12-22 06:02:59,216 INFO L78 Accepts]: Start accepts. Automaton has 42837 states and 76581 transitions. Word has length 173 [2020-12-22 06:02:59,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:59,216 INFO L481 AbstractCegarLoop]: Abstraction has 42837 states and 76581 transitions. [2020-12-22 06:02:59,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:59,216 INFO L276 IsEmpty]: Start isEmpty. Operand 42837 states and 76581 transitions. [2020-12-22 06:02:59,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-12-22 06:02:59,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:59,228 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:59,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-12-22 06:02:59,228 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:59,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:59,228 INFO L82 PathProgramCache]: Analyzing trace with hash -964900857, now seen corresponding path program 1 times [2020-12-22 06:02:59,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:59,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855879831] [2020-12-22 06:02:59,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:59,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:59,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855879831] [2020-12-22 06:02:59,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:59,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:59,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889892909] [2020-12-22 06:02:59,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:59,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:59,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:59,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:59,358 INFO L87 Difference]: Start difference. First operand 42837 states and 76581 transitions. Second operand 5 states. [2020-12-22 06:03:10,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:10,744 INFO L93 Difference]: Finished difference Result 126898 states and 227569 transitions. [2020-12-22 06:03:10,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:03:10,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-12-22 06:03:10,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:10,860 INFO L225 Difference]: With dead ends: 126898 [2020-12-22 06:03:10,860 INFO L226 Difference]: Without dead ends: 84331 [2020-12-22 06:03:10,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:03:10,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84331 states. [2020-12-22 06:03:19,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84331 to 80601. [2020-12-22 06:03:19,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80601 states. [2020-12-22 06:03:19,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80601 states to 80601 states and 145051 transitions. [2020-12-22 06:03:19,502 INFO L78 Accepts]: Start accepts. Automaton has 80601 states and 145051 transitions. Word has length 174 [2020-12-22 06:03:19,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:19,503 INFO L481 AbstractCegarLoop]: Abstraction has 80601 states and 145051 transitions. [2020-12-22 06:03:19,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:19,503 INFO L276 IsEmpty]: Start isEmpty. Operand 80601 states and 145051 transitions. [2020-12-22 06:03:19,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-12-22 06:03:19,517 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:19,517 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:19,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-12-22 06:03:19,517 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:19,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:19,517 INFO L82 PathProgramCache]: Analyzing trace with hash -214296017, now seen corresponding path program 1 times [2020-12-22 06:03:19,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:19,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814187754] [2020-12-22 06:03:19,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:19,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:19,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814187754] [2020-12-22 06:03:19,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:19,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:19,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329125102] [2020-12-22 06:03:19,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:19,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:19,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:19,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:19,663 INFO L87 Difference]: Start difference. First operand 80601 states and 145051 transitions. Second operand 5 states. [2020-12-22 06:03:31,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:31,391 INFO L93 Difference]: Finished difference Result 164482 states and 295157 transitions. [2020-12-22 06:03:31,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:03:31,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-12-22 06:03:31,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:31,526 INFO L225 Difference]: With dead ends: 164482 [2020-12-22 06:03:31,527 INFO L226 Difference]: Without dead ends: 84151 [2020-12-22 06:03:31,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:03:31,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84151 states. [2020-12-22 06:03:40,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84151 to 80601. [2020-12-22 06:03:40,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80601 states. [2020-12-22 06:03:40,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80601 states to 80601 states and 144997 transitions. [2020-12-22 06:03:40,409 INFO L78 Accepts]: Start accepts. Automaton has 80601 states and 144997 transitions. Word has length 175 [2020-12-22 06:03:40,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:40,409 INFO L481 AbstractCegarLoop]: Abstraction has 80601 states and 144997 transitions. [2020-12-22 06:03:40,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:40,409 INFO L276 IsEmpty]: Start isEmpty. Operand 80601 states and 144997 transitions. [2020-12-22 06:03:40,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-12-22 06:03:40,422 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:40,423 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:40,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-12-22 06:03:40,423 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:40,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:40,423 INFO L82 PathProgramCache]: Analyzing trace with hash 190887747, now seen corresponding path program 1 times [2020-12-22 06:03:40,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:40,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284657072] [2020-12-22 06:03:40,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY