/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_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:01:39,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:01:39,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:01:39,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:01:39,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:01:39,420 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:01:39,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:01:39,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:01:39,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:01:39,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:01:39,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:01:39,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:01:39,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:01:39,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:01:39,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:01:39,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:01:39,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:01:39,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:01:39,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:01:39,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:01:39,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:01:39,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:01:39,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:01:39,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:01:39,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:01:39,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:01:39,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:01:39,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:01:39,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:01:39,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:01:39,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:01:39,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:01:39,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:01:39,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:01:39,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:01:39,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:01:39,521 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:01:39,585 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:01:39,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:01:39,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:01:39,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:01:39,590 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:01:39,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:01:39,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:01:39,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:01:39,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:01:39,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:01:39,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:01:39,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:01:39,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:01:39,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:01:39,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:01:39,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:01:39,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:01:39,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:01:39,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:01:39,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:01:39,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:01:39,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:01:39,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:01:39,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:01:39,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:01:39,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:01:39,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:01:40,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:01:40,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:01:40,038 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:01:40,039 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:01:40,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c [2020-12-22 06:01:40,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0170bcc27/3c1a33901f334713b6491d0afe64ad60/FLAG529da1244 [2020-12-22 06:01:41,002 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:01:41,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c [2020-12-22 06:01:41,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0170bcc27/3c1a33901f334713b6491d0afe64ad60/FLAG529da1244 [2020-12-22 06:01:41,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0170bcc27/3c1a33901f334713b6491d0afe64ad60 [2020-12-22 06:01:41,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:01:41,154 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:01:41,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:01:41,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:01:41,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:01:41,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:01:41" (1/1) ... [2020-12-22 06:01:41,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73dd1968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:41, skipping insertion in model container [2020-12-22 06:01:41,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:01:41" (1/1) ... [2020-12-22 06:01:41,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:01:41,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:01:41,834 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_product28.cil.c[63273,63286] [2020-12-22 06:01:41,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:01:41,886 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:01:42,054 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_product28.cil.c[63273,63286] [2020-12-22 06:01:42,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:01:42,182 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:01:42,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:42 WrapperNode [2020-12-22 06:01:42,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:01:42,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:01:42,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:01:42,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:01:42,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:42" (1/1) ... [2020-12-22 06:01:42,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:42" (1/1) ... [2020-12-22 06:01:42,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:01:42,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:01:42,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:01:42,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:01:42,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:42" (1/1) ... [2020-12-22 06:01:42,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:42" (1/1) ... [2020-12-22 06:01:42,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:42" (1/1) ... [2020-12-22 06:01:42,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:42" (1/1) ... [2020-12-22 06:01:42,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:42" (1/1) ... [2020-12-22 06:01:43,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:42" (1/1) ... [2020-12-22 06:01:43,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:42" (1/1) ... [2020-12-22 06:01:43,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:01:43,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:01:43,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:01:43,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:01:43,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:01:43,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:01:43,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:01:43,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:01:43,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:01:54,785 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:01:54,786 INFO L299 CfgBuilder]: Removed 1209 assume(true) statements. [2020-12-22 06:01:54,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:01:54 BoogieIcfgContainer [2020-12-22 06:01:54,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:01:54,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:01:54,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:01:54,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:01:54,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:01:41" (1/3) ... [2020-12-22 06:01:54,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aadca8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:01:54, skipping insertion in model container [2020-12-22 06:01:54,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:01:42" (2/3) ... [2020-12-22 06:01:54,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aadca8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:01:54, skipping insertion in model container [2020-12-22 06:01:54,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:01:54" (3/3) ... [2020-12-22 06:01:54,803 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product28.cil.c [2020-12-22 06:01:54,809 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:01:54,817 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 06:01:54,836 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 06:01:54,880 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:01:54,880 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:01:54,880 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:01:54,880 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:01:54,880 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:01:54,881 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:01:54,881 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:01:54,881 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:01:54,965 INFO L276 IsEmpty]: Start isEmpty. Operand 4983 states. [2020-12-22 06:01:54,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 06:01:54,977 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:54,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:54,979 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 06:01:54,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:54,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1433745471, now seen corresponding path program 1 times [2020-12-22 06:01:54,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:54,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199545391] [2020-12-22 06:01:54,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:55,423 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 06:01:55,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199545391] [2020-12-22 06:01:55,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:55,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:01:55,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735614358] [2020-12-22 06:01:55,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:01:55,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:55,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:01:55,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:55,453 INFO L87 Difference]: Start difference. First operand 4983 states. Second operand 3 states. [2020-12-22 06:01:56,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:56,002 INFO L93 Difference]: Finished difference Result 14869 states and 27983 transitions. [2020-12-22 06:01:56,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:01:56,004 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-12-22 06:01:56,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:56,095 INFO L225 Difference]: With dead ends: 14869 [2020-12-22 06:01:56,095 INFO L226 Difference]: Without dead ends: 9891 [2020-12-22 06:01:56,112 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 06:01:56,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9891 states. [2020-12-22 06:01:56,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9891 to 4979. [2020-12-22 06:01:56,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4979 states. [2020-12-22 06:01:56,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4979 states to 4979 states and 9358 transitions. [2020-12-22 06:01:56,404 INFO L78 Accepts]: Start accepts. Automaton has 4979 states and 9358 transitions. Word has length 36 [2020-12-22 06:01:56,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:56,405 INFO L481 AbstractCegarLoop]: Abstraction has 4979 states and 9358 transitions. [2020-12-22 06:01:56,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:01:56,405 INFO L276 IsEmpty]: Start isEmpty. Operand 4979 states and 9358 transitions. [2020-12-22 06:01:56,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 06:01:56,414 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:56,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:56,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:01:56,416 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 06:01:56,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:56,417 INFO L82 PathProgramCache]: Analyzing trace with hash 409185208, now seen corresponding path program 1 times [2020-12-22 06:01:56,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:56,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152057032] [2020-12-22 06:01:56,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:56,634 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 06:01:56,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152057032] [2020-12-22 06:01:56,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:56,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:01:56,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956832862] [2020-12-22 06:01:56,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:01:56,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:56,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:01:56,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:01:56,639 INFO L87 Difference]: Start difference. First operand 4979 states and 9358 transitions. Second operand 6 states. [2020-12-22 06:01:57,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:57,830 INFO L93 Difference]: Finished difference Result 19691 states and 37029 transitions. [2020-12-22 06:01:57,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:01:57,831 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-12-22 06:01:57,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:57,936 INFO L225 Difference]: With dead ends: 19691 [2020-12-22 06:01:57,936 INFO L226 Difference]: Without dead ends: 14755 [2020-12-22 06:01:57,950 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 06:01:57,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14755 states. [2020-12-22 06:01:58,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14755 to 4975. [2020-12-22 06:01:58,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4975 states. [2020-12-22 06:01:58,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4975 states to 4975 states and 9347 transitions. [2020-12-22 06:01:58,428 INFO L78 Accepts]: Start accepts. Automaton has 4975 states and 9347 transitions. Word has length 43 [2020-12-22 06:01:58,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:58,428 INFO L481 AbstractCegarLoop]: Abstraction has 4975 states and 9347 transitions. [2020-12-22 06:01:58,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:01:58,428 INFO L276 IsEmpty]: Start isEmpty. Operand 4975 states and 9347 transitions. [2020-12-22 06:01:58,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 06:01:58,433 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:58,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:58,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:01:58,434 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 06:01:58,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:58,438 INFO L82 PathProgramCache]: Analyzing trace with hash 2047614021, now seen corresponding path program 1 times [2020-12-22 06:01:58,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:58,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888493620] [2020-12-22 06:01:58,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:58,560 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 06:01:58,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888493620] [2020-12-22 06:01:58,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:58,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:01:58,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383068468] [2020-12-22 06:01:58,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:58,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:58,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:58,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:58,564 INFO L87 Difference]: Start difference. First operand 4975 states and 9347 transitions. Second operand 4 states. [2020-12-22 06:01:59,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:59,431 INFO L93 Difference]: Finished difference Result 14813 states and 27850 transitions. [2020-12-22 06:01:59,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:59,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-12-22 06:01:59,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:59,467 INFO L225 Difference]: With dead ends: 14813 [2020-12-22 06:01:59,467 INFO L226 Difference]: Without dead ends: 9881 [2020-12-22 06:01:59,480 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 06:01:59,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9881 states. [2020-12-22 06:01:59,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9881 to 4975. [2020-12-22 06:01:59,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4975 states. [2020-12-22 06:01:59,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4975 states to 4975 states and 9338 transitions. [2020-12-22 06:01:59,790 INFO L78 Accepts]: Start accepts. Automaton has 4975 states and 9338 transitions. Word has length 45 [2020-12-22 06:01:59,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:59,797 INFO L481 AbstractCegarLoop]: Abstraction has 4975 states and 9338 transitions. [2020-12-22 06:01:59,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:59,798 INFO L276 IsEmpty]: Start isEmpty. Operand 4975 states and 9338 transitions. [2020-12-22 06:01:59,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 06:01:59,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:59,801 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 06:01:59,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:01:59,801 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 06:01:59,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:59,802 INFO L82 PathProgramCache]: Analyzing trace with hash -346533102, now seen corresponding path program 1 times [2020-12-22 06:01:59,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:59,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129800525] [2020-12-22 06:01:59,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:59,914 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 06:01:59,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129800525] [2020-12-22 06:01:59,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:59,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:01:59,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177689866] [2020-12-22 06:01:59,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:59,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:59,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:59,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:59,919 INFO L87 Difference]: Start difference. First operand 4975 states and 9338 transitions. Second operand 4 states. [2020-12-22 06:02:00,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:00,709 INFO L93 Difference]: Finished difference Result 14813 states and 27832 transitions. [2020-12-22 06:02:00,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:00,710 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-12-22 06:02:00,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:00,745 INFO L225 Difference]: With dead ends: 14813 [2020-12-22 06:02:00,746 INFO L226 Difference]: Without dead ends: 9881 [2020-12-22 06:02:00,760 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 06:02:00,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9881 states. [2020-12-22 06:02:01,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9881 to 4975. [2020-12-22 06:02:01,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4975 states. [2020-12-22 06:02:01,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4975 states to 4975 states and 9329 transitions. [2020-12-22 06:02:01,059 INFO L78 Accepts]: Start accepts. Automaton has 4975 states and 9329 transitions. Word has length 47 [2020-12-22 06:02:01,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:01,060 INFO L481 AbstractCegarLoop]: Abstraction has 4975 states and 9329 transitions. [2020-12-22 06:02:01,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:01,060 INFO L276 IsEmpty]: Start isEmpty. Operand 4975 states and 9329 transitions. [2020-12-22 06:02:01,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:02:01,061 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:01,062 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 06:02:01,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:02:01,062 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 06:02:01,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:01,063 INFO L82 PathProgramCache]: Analyzing trace with hash 998347845, now seen corresponding path program 1 times [2020-12-22 06:02:01,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:01,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516966451] [2020-12-22 06:02:01,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:01,203 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 06:02:01,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516966451] [2020-12-22 06:02:01,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:01,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:01,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3985270] [2020-12-22 06:02:01,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:01,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:01,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:01,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:01,205 INFO L87 Difference]: Start difference. First operand 4975 states and 9329 transitions. Second operand 4 states. [2020-12-22 06:02:02,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:02,461 INFO L93 Difference]: Finished difference Result 24565 states and 46152 transitions. [2020-12-22 06:02:02,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:02,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-12-22 06:02:02,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:02,528 INFO L225 Difference]: With dead ends: 24565 [2020-12-22 06:02:02,529 INFO L226 Difference]: Without dead ends: 19633 [2020-12-22 06:02:02,543 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 06:02:02,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19633 states. [2020-12-22 06:02:02,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19633 to 4975. [2020-12-22 06:02:02,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4975 states. [2020-12-22 06:02:02,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4975 states to 4975 states and 9325 transitions. [2020-12-22 06:02:02,869 INFO L78 Accepts]: Start accepts. Automaton has 4975 states and 9325 transitions. Word has length 49 [2020-12-22 06:02:02,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:02,869 INFO L481 AbstractCegarLoop]: Abstraction has 4975 states and 9325 transitions. [2020-12-22 06:02:02,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:02,869 INFO L276 IsEmpty]: Start isEmpty. Operand 4975 states and 9325 transitions. [2020-12-22 06:02:02,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:02:02,870 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:02,871 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 06:02:02,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:02:02,871 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 06:02:02,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:02,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1865109307, now seen corresponding path program 1 times [2020-12-22 06:02:02,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:02,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627034041] [2020-12-22 06:02:02,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:02,953 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 06:02:02,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627034041] [2020-12-22 06:02:02,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:02,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:02,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697542672] [2020-12-22 06:02:02,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:02,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:02,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:02,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:02,958 INFO L87 Difference]: Start difference. First operand 4975 states and 9325 transitions. Second operand 4 states. [2020-12-22 06:02:03,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:03,786 INFO L93 Difference]: Finished difference Result 19668 states and 36943 transitions. [2020-12-22 06:02:03,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:03,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-12-22 06:02:03,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:03,832 INFO L225 Difference]: With dead ends: 19668 [2020-12-22 06:02:03,832 INFO L226 Difference]: Without dead ends: 14715 [2020-12-22 06:02:03,845 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 06:02:03,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14715 states. [2020-12-22 06:02:04,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14715 to 4957. [2020-12-22 06:02:04,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4957 states. [2020-12-22 06:02:04,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4957 states to 4957 states and 9294 transitions. [2020-12-22 06:02:04,124 INFO L78 Accepts]: Start accepts. Automaton has 4957 states and 9294 transitions. Word has length 49 [2020-12-22 06:02:04,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:04,124 INFO L481 AbstractCegarLoop]: Abstraction has 4957 states and 9294 transitions. [2020-12-22 06:02:04,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:04,124 INFO L276 IsEmpty]: Start isEmpty. Operand 4957 states and 9294 transitions. [2020-12-22 06:02:04,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 06:02:04,125 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:04,178 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 06:02:04,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:02:04,179 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 06:02:04,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:04,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1012924566, now seen corresponding path program 1 times [2020-12-22 06:02:04,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:04,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162304840] [2020-12-22 06:02:04,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:04,245 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 06:02:04,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162304840] [2020-12-22 06:02:04,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:04,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:04,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736586165] [2020-12-22 06:02:04,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:04,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:04,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:04,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:04,248 INFO L87 Difference]: Start difference. First operand 4957 states and 9294 transitions. Second operand 4 states. [2020-12-22 06:02:05,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:05,009 INFO L93 Difference]: Finished difference Result 14777 states and 27745 transitions. [2020-12-22 06:02:05,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:05,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-12-22 06:02:05,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:05,040 INFO L225 Difference]: With dead ends: 14777 [2020-12-22 06:02:05,041 INFO L226 Difference]: Without dead ends: 9842 [2020-12-22 06:02:05,053 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 06:02:05,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9842 states. [2020-12-22 06:02:05,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9842 to 4957. [2020-12-22 06:02:05,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4957 states. [2020-12-22 06:02:05,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4957 states to 4957 states and 9288 transitions. [2020-12-22 06:02:05,366 INFO L78 Accepts]: Start accepts. Automaton has 4957 states and 9288 transitions. Word has length 50 [2020-12-22 06:02:05,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:05,366 INFO L481 AbstractCegarLoop]: Abstraction has 4957 states and 9288 transitions. [2020-12-22 06:02:05,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:05,366 INFO L276 IsEmpty]: Start isEmpty. Operand 4957 states and 9288 transitions. [2020-12-22 06:02:05,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:02:05,367 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:05,367 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 06:02:05,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:02:05,368 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 06:02:05,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:05,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1478827478, now seen corresponding path program 1 times [2020-12-22 06:02:05,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:05,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027295548] [2020-12-22 06:02:05,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:05,442 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 06:02:05,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027295548] [2020-12-22 06:02:05,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:05,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:05,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368855036] [2020-12-22 06:02:05,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:05,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:05,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:05,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:05,444 INFO L87 Difference]: Start difference. First operand 4957 states and 9288 transitions. Second operand 4 states. [2020-12-22 06:02:05,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:05,986 INFO L93 Difference]: Finished difference Result 14777 states and 27733 transitions. [2020-12-22 06:02:05,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:05,987 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-12-22 06:02:05,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:06,015 INFO L225 Difference]: With dead ends: 14777 [2020-12-22 06:02:06,016 INFO L226 Difference]: Without dead ends: 9842 [2020-12-22 06:02:06,026 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 06:02:06,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9842 states. [2020-12-22 06:02:06,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9842 to 4957. [2020-12-22 06:02:06,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4957 states. [2020-12-22 06:02:06,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4957 states to 4957 states and 9282 transitions. [2020-12-22 06:02:06,270 INFO L78 Accepts]: Start accepts. Automaton has 4957 states and 9282 transitions. Word has length 51 [2020-12-22 06:02:06,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:06,271 INFO L481 AbstractCegarLoop]: Abstraction has 4957 states and 9282 transitions. [2020-12-22 06:02:06,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:06,271 INFO L276 IsEmpty]: Start isEmpty. Operand 4957 states and 9282 transitions. [2020-12-22 06:02:06,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 06:02:06,272 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:06,272 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 06:02:06,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:02:06,273 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 06:02:06,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:06,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1282916177, now seen corresponding path program 1 times [2020-12-22 06:02:06,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:06,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078944540] [2020-12-22 06:02:06,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:06,352 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 06:02:06,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078944540] [2020-12-22 06:02:06,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:06,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:02:06,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020219588] [2020-12-22 06:02:06,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:02:06,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:06,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:02:06,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:02:06,355 INFO L87 Difference]: Start difference. First operand 4957 states and 9282 transitions. Second operand 7 states. [2020-12-22 06:02:07,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:07,445 INFO L93 Difference]: Finished difference Result 24536 states and 46066 transitions. [2020-12-22 06:02:07,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:02:07,446 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-12-22 06:02:07,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:07,507 INFO L225 Difference]: With dead ends: 24536 [2020-12-22 06:02:07,507 INFO L226 Difference]: Without dead ends: 19607 [2020-12-22 06:02:07,522 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 06:02:07,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19607 states. [2020-12-22 06:02:07,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19607 to 4959. [2020-12-22 06:02:07,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4959 states. [2020-12-22 06:02:07,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4959 states to 4959 states and 9283 transitions. [2020-12-22 06:02:07,877 INFO L78 Accepts]: Start accepts. Automaton has 4959 states and 9283 transitions. Word has length 52 [2020-12-22 06:02:07,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:07,877 INFO L481 AbstractCegarLoop]: Abstraction has 4959 states and 9283 transitions. [2020-12-22 06:02:07,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:02:07,877 INFO L276 IsEmpty]: Start isEmpty. Operand 4959 states and 9283 transitions. [2020-12-22 06:02:07,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:02:07,878 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:07,879 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 06:02:07,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:02:07,879 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 06:02:07,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:07,880 INFO L82 PathProgramCache]: Analyzing trace with hash -905172332, now seen corresponding path program 1 times [2020-12-22 06:02:07,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:07,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845639624] [2020-12-22 06:02:07,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:07,959 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 06:02:07,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845639624] [2020-12-22 06:02:07,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:07,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:02:07,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453023094] [2020-12-22 06:02:07,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:02:07,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:07,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:02:07,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:02:07,962 INFO L87 Difference]: Start difference. First operand 4959 states and 9283 transitions. Second operand 7 states. [2020-12-22 06:02:09,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:09,239 INFO L93 Difference]: Finished difference Result 24528 states and 46045 transitions. [2020-12-22 06:02:09,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:02:09,240 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-12-22 06:02:09,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:09,291 INFO L225 Difference]: With dead ends: 24528 [2020-12-22 06:02:09,291 INFO L226 Difference]: Without dead ends: 19602 [2020-12-22 06:02:09,309 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 06:02:09,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19602 states. [2020-12-22 06:02:09,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19602 to 4964. [2020-12-22 06:02:09,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4964 states. [2020-12-22 06:02:09,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4964 states to 4964 states and 9291 transitions. [2020-12-22 06:02:09,778 INFO L78 Accepts]: Start accepts. Automaton has 4964 states and 9291 transitions. Word has length 54 [2020-12-22 06:02:09,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:09,779 INFO L481 AbstractCegarLoop]: Abstraction has 4964 states and 9291 transitions. [2020-12-22 06:02:09,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:02:09,779 INFO L276 IsEmpty]: Start isEmpty. Operand 4964 states and 9291 transitions. [2020-12-22 06:02:09,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:02:09,780 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:09,780 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 06:02:09,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:02:09,781 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 06:02:09,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:09,781 INFO L82 PathProgramCache]: Analyzing trace with hash -979062993, now seen corresponding path program 1 times [2020-12-22 06:02:09,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:09,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918554317] [2020-12-22 06:02:09,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:09,865 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 06:02:09,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918554317] [2020-12-22 06:02:09,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:09,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:02:09,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028917840] [2020-12-22 06:02:09,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:02:09,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:09,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:02:09,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:09,870 INFO L87 Difference]: Start difference. First operand 4964 states and 9291 transitions. Second operand 3 states. [2020-12-22 06:02:10,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:10,061 INFO L93 Difference]: Finished difference Result 9870 states and 18500 transitions. [2020-12-22 06:02:10,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:02:10,062 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 06:02:10,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:10,073 INFO L225 Difference]: With dead ends: 9870 [2020-12-22 06:02:10,073 INFO L226 Difference]: Without dead ends: 4943 [2020-12-22 06:02:10,082 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 06:02:10,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4943 states. [2020-12-22 06:02:10,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4943 to 4943. [2020-12-22 06:02:10,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4943 states. [2020-12-22 06:02:10,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4943 states to 4943 states and 9255 transitions. [2020-12-22 06:02:10,408 INFO L78 Accepts]: Start accepts. Automaton has 4943 states and 9255 transitions. Word has length 56 [2020-12-22 06:02:10,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:10,409 INFO L481 AbstractCegarLoop]: Abstraction has 4943 states and 9255 transitions. [2020-12-22 06:02:10,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:02:10,409 INFO L276 IsEmpty]: Start isEmpty. Operand 4943 states and 9255 transitions. [2020-12-22 06:02:10,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 06:02:10,411 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:10,411 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 06:02:10,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:02:10,412 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 06:02:10,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:10,413 INFO L82 PathProgramCache]: Analyzing trace with hash 807727210, now seen corresponding path program 1 times [2020-12-22 06:02:10,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:10,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81139968] [2020-12-22 06:02:10,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:10,524 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 06:02:10,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81139968] [2020-12-22 06:02:10,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:10,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:10,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219880073] [2020-12-22 06:02:10,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:10,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:10,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:10,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:10,527 INFO L87 Difference]: Start difference. First operand 4943 states and 9255 transitions. Second operand 5 states. [2020-12-22 06:02:10,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:10,909 INFO L93 Difference]: Finished difference Result 9819 states and 18422 transitions. [2020-12-22 06:02:10,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:10,910 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-12-22 06:02:10,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:10,920 INFO L225 Difference]: With dead ends: 9819 [2020-12-22 06:02:10,920 INFO L226 Difference]: Without dead ends: 4937 [2020-12-22 06:02:10,929 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 06:02:10,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4937 states. [2020-12-22 06:02:11,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4937 to 4937. [2020-12-22 06:02:11,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4937 states. [2020-12-22 06:02:11,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4937 states to 4937 states and 9246 transitions. [2020-12-22 06:02:11,172 INFO L78 Accepts]: Start accepts. Automaton has 4937 states and 9246 transitions. Word has length 58 [2020-12-22 06:02:11,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:11,172 INFO L481 AbstractCegarLoop]: Abstraction has 4937 states and 9246 transitions. [2020-12-22 06:02:11,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:11,172 INFO L276 IsEmpty]: Start isEmpty. Operand 4937 states and 9246 transitions. [2020-12-22 06:02:11,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 06:02:11,173 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:11,173 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 06:02:11,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:02:11,174 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 06:02:11,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:11,174 INFO L82 PathProgramCache]: Analyzing trace with hash 101172202, now seen corresponding path program 1 times [2020-12-22 06:02:11,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:11,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921642809] [2020-12-22 06:02:11,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:11,237 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 06:02:11,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921642809] [2020-12-22 06:02:11,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:11,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:11,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323805082] [2020-12-22 06:02:11,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:11,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:11,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:11,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:11,240 INFO L87 Difference]: Start difference. First operand 4937 states and 9246 transitions. Second operand 4 states. [2020-12-22 06:02:11,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:11,469 INFO L93 Difference]: Finished difference Result 9813 states and 18413 transitions. [2020-12-22 06:02:11,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:02:11,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-12-22 06:02:11,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:11,476 INFO L225 Difference]: With dead ends: 9813 [2020-12-22 06:02:11,476 INFO L226 Difference]: Without dead ends: 4923 [2020-12-22 06:02:11,486 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 06:02:11,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4923 states. [2020-12-22 06:02:11,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4923 to 4923. [2020-12-22 06:02:11,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4923 states. [2020-12-22 06:02:11,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4923 states to 4923 states and 9225 transitions. [2020-12-22 06:02:11,788 INFO L78 Accepts]: Start accepts. Automaton has 4923 states and 9225 transitions. Word has length 58 [2020-12-22 06:02:11,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:11,790 INFO L481 AbstractCegarLoop]: Abstraction has 4923 states and 9225 transitions. [2020-12-22 06:02:11,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:11,790 INFO L276 IsEmpty]: Start isEmpty. Operand 4923 states and 9225 transitions. [2020-12-22 06:02:11,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 06:02:11,795 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:11,795 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 06:02:11,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:02:11,796 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 06:02:11,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:11,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1399220067, now seen corresponding path program 1 times [2020-12-22 06:02:11,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:11,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25119830] [2020-12-22 06:02:11,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:11,912 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 06:02:11,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25119830] [2020-12-22 06:02:11,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:11,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:02:11,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474180760] [2020-12-22 06:02:11,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:11,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:11,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:11,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:11,915 INFO L87 Difference]: Start difference. First operand 4923 states and 9225 transitions. Second operand 6 states. [2020-12-22 06:02:12,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:12,309 INFO L93 Difference]: Finished difference Result 9813 states and 18408 transitions. [2020-12-22 06:02:12,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:02:12,309 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-12-22 06:02:12,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:12,318 INFO L225 Difference]: With dead ends: 9813 [2020-12-22 06:02:12,318 INFO L226 Difference]: Without dead ends: 4943 [2020-12-22 06:02:12,325 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 06:02:12,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4943 states. [2020-12-22 06:02:12,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4943 to 4923. [2020-12-22 06:02:12,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4923 states. [2020-12-22 06:02:12,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4923 states to 4923 states and 9224 transitions. [2020-12-22 06:02:12,584 INFO L78 Accepts]: Start accepts. Automaton has 4923 states and 9224 transitions. Word has length 59 [2020-12-22 06:02:12,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:12,584 INFO L481 AbstractCegarLoop]: Abstraction has 4923 states and 9224 transitions. [2020-12-22 06:02:12,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:12,584 INFO L276 IsEmpty]: Start isEmpty. Operand 4923 states and 9224 transitions. [2020-12-22 06:02:12,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:02:12,585 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:12,585 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 06:02:12,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:02:12,586 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 06:02:12,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:12,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1713616687, now seen corresponding path program 1 times [2020-12-22 06:02:12,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:12,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173853995] [2020-12-22 06:02:12,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:12,657 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 06:02:12,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173853995] [2020-12-22 06:02:12,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:12,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:02:12,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384564271] [2020-12-22 06:02:12,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:12,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:12,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:12,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:12,659 INFO L87 Difference]: Start difference. First operand 4923 states and 9224 transitions. Second operand 6 states. [2020-12-22 06:02:13,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:13,027 INFO L93 Difference]: Finished difference Result 9803 states and 18389 transitions. [2020-12-22 06:02:13,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:02:13,028 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-12-22 06:02:13,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:13,034 INFO L225 Difference]: With dead ends: 9803 [2020-12-22 06:02:13,035 INFO L226 Difference]: Without dead ends: 4938 [2020-12-22 06:02:13,044 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 06:02:13,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4938 states. [2020-12-22 06:02:13,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4938 to 4923. [2020-12-22 06:02:13,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4923 states. [2020-12-22 06:02:13,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4923 states to 4923 states and 9223 transitions. [2020-12-22 06:02:13,280 INFO L78 Accepts]: Start accepts. Automaton has 4923 states and 9223 transitions. Word has length 60 [2020-12-22 06:02:13,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:13,280 INFO L481 AbstractCegarLoop]: Abstraction has 4923 states and 9223 transitions. [2020-12-22 06:02:13,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:13,280 INFO L276 IsEmpty]: Start isEmpty. Operand 4923 states and 9223 transitions. [2020-12-22 06:02:13,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:02:13,281 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:13,281 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 06:02:13,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:02:13,282 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 06:02:13,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:13,282 INFO L82 PathProgramCache]: Analyzing trace with hash 863761490, now seen corresponding path program 1 times [2020-12-22 06:02:13,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:13,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908766258] [2020-12-22 06:02:13,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:13,361 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 06:02:13,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908766258] [2020-12-22 06:02:13,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:13,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:02:13,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421571292] [2020-12-22 06:02:13,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:02:13,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:13,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:02:13,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:13,363 INFO L87 Difference]: Start difference. First operand 4923 states and 9223 transitions. Second operand 3 states. [2020-12-22 06:02:14,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:14,071 INFO L93 Difference]: Finished difference Result 11339 states and 21313 transitions. [2020-12-22 06:02:14,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:02:14,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 06:02:14,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:14,086 INFO L225 Difference]: With dead ends: 11339 [2020-12-22 06:02:14,086 INFO L226 Difference]: Without dead ends: 8852 [2020-12-22 06:02:14,090 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 06:02:14,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8852 states. [2020-12-22 06:02:14,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8852 to 6873. [2020-12-22 06:02:14,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6873 states. [2020-12-22 06:02:14,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6873 states to 6873 states and 12895 transitions. [2020-12-22 06:02:14,492 INFO L78 Accepts]: Start accepts. Automaton has 6873 states and 12895 transitions. Word has length 61 [2020-12-22 06:02:14,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:14,493 INFO L481 AbstractCegarLoop]: Abstraction has 6873 states and 12895 transitions. [2020-12-22 06:02:14,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:02:14,493 INFO L276 IsEmpty]: Start isEmpty. Operand 6873 states and 12895 transitions. [2020-12-22 06:02:14,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 06:02:14,498 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:14,498 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] [2020-12-22 06:02:14,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:02:14,498 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 06:02:14,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:14,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1295338191, now seen corresponding path program 1 times [2020-12-22 06:02:14,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:14,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500393598] [2020-12-22 06:02:14,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:14,600 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 06:02:14,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500393598] [2020-12-22 06:02:14,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:14,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:02:14,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708744716] [2020-12-22 06:02:14,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 06:02:14,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:14,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 06:02:14,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:02:14,603 INFO L87 Difference]: Start difference. First operand 6873 states and 12895 transitions. Second operand 8 states. [2020-12-22 06:02:16,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:16,094 INFO L93 Difference]: Finished difference Result 15169 states and 28261 transitions. [2020-12-22 06:02:16,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 06:02:16,095 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-12-22 06:02:16,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:16,108 INFO L225 Difference]: With dead ends: 15169 [2020-12-22 06:02:16,109 INFO L226 Difference]: Without dead ends: 9544 [2020-12-22 06:02:16,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-12-22 06:02:16,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9544 states. [2020-12-22 06:02:16,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9544 to 5654. [2020-12-22 06:02:16,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5654 states. [2020-12-22 06:02:16,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5654 states to 5654 states and 10541 transitions. [2020-12-22 06:02:16,469 INFO L78 Accepts]: Start accepts. Automaton has 5654 states and 10541 transitions. Word has length 80 [2020-12-22 06:02:16,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:16,469 INFO L481 AbstractCegarLoop]: Abstraction has 5654 states and 10541 transitions. [2020-12-22 06:02:16,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 06:02:16,469 INFO L276 IsEmpty]: Start isEmpty. Operand 5654 states and 10541 transitions. [2020-12-22 06:02:16,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 06:02:16,474 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:16,475 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 06:02:16,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:02:16,475 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 06:02:16,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:16,476 INFO L82 PathProgramCache]: Analyzing trace with hash -361502351, now seen corresponding path program 1 times [2020-12-22 06:02:16,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:16,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219911546] [2020-12-22 06:02:16,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:16,565 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 06:02:16,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219911546] [2020-12-22 06:02:16,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:16,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:16,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612667459] [2020-12-22 06:02:16,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:16,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:16,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:16,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:16,574 INFO L87 Difference]: Start difference. First operand 5654 states and 10541 transitions. Second operand 6 states. [2020-12-22 06:02:20,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:20,126 INFO L93 Difference]: Finished difference Result 35654 states and 66465 transitions. [2020-12-22 06:02:20,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:02:20,127 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-12-22 06:02:20,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:20,168 INFO L225 Difference]: With dead ends: 35654 [2020-12-22 06:02:20,168 INFO L226 Difference]: Without dead ends: 31428 [2020-12-22 06:02:20,181 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 06:02:20,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31428 states. [2020-12-22 06:02:20,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31428 to 5684. [2020-12-22 06:02:20,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5684 states. [2020-12-22 06:02:20,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5684 states to 5684 states and 10571 transitions. [2020-12-22 06:02:20,668 INFO L78 Accepts]: Start accepts. Automaton has 5684 states and 10571 transitions. Word has length 81 [2020-12-22 06:02:20,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:20,668 INFO L481 AbstractCegarLoop]: Abstraction has 5684 states and 10571 transitions. [2020-12-22 06:02:20,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:20,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5684 states and 10571 transitions. [2020-12-22 06:02:20,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:02:20,671 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:20,671 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 06:02:20,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:02:20,671 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 06:02:20,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:20,672 INFO L82 PathProgramCache]: Analyzing trace with hash 819113797, now seen corresponding path program 1 times [2020-12-22 06:02:20,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:20,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996691651] [2020-12-22 06:02:20,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:20,770 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 06:02:20,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996691651] [2020-12-22 06:02:20,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:20,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:02:20,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804914122] [2020-12-22 06:02:20,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:02:20,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:20,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:02:20,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:20,774 INFO L87 Difference]: Start difference. First operand 5684 states and 10571 transitions. Second operand 3 states. [2020-12-22 06:02:21,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:21,389 INFO L93 Difference]: Finished difference Result 13833 states and 25741 transitions. [2020-12-22 06:02:21,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:02:21,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 06:02:21,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:21,402 INFO L225 Difference]: With dead ends: 13833 [2020-12-22 06:02:21,402 INFO L226 Difference]: Without dead ends: 9737 [2020-12-22 06:02:21,409 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 06:02:21,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9737 states. [2020-12-22 06:02:21,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9737 to 9714. [2020-12-22 06:02:21,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9714 states. [2020-12-22 06:02:21,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9714 states to 9714 states and 18068 transitions. [2020-12-22 06:02:21,993 INFO L78 Accepts]: Start accepts. Automaton has 9714 states and 18068 transitions. Word has length 82 [2020-12-22 06:02:21,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:21,993 INFO L481 AbstractCegarLoop]: Abstraction has 9714 states and 18068 transitions. [2020-12-22 06:02:21,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:02:21,993 INFO L276 IsEmpty]: Start isEmpty. Operand 9714 states and 18068 transitions. [2020-12-22 06:02:21,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 06:02:21,997 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:21,997 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 06:02:21,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:02:21,997 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 06:02:21,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:21,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1784332666, now seen corresponding path program 1 times [2020-12-22 06:02:21,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:21,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674042792] [2020-12-22 06:02:21,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:22,068 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 06:02:22,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674042792] [2020-12-22 06:02:22,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:22,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:02:22,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365771208] [2020-12-22 06:02:22,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:02:22,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:22,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:02:22,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:22,070 INFO L87 Difference]: Start difference. First operand 9714 states and 18068 transitions. Second operand 3 states. [2020-12-22 06:02:22,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:22,982 INFO L93 Difference]: Finished difference Result 17839 states and 33197 transitions. [2020-12-22 06:02:22,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:02:22,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-22 06:02:22,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:23,000 INFO L225 Difference]: With dead ends: 17839 [2020-12-22 06:02:23,000 INFO L226 Difference]: Without dead ends: 9688 [2020-12-22 06:02:23,010 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 06:02:23,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9688 states. [2020-12-22 06:02:23,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9688 to 9688. [2020-12-22 06:02:23,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9688 states. [2020-12-22 06:02:23,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9688 states to 9688 states and 18018 transitions. [2020-12-22 06:02:23,619 INFO L78 Accepts]: Start accepts. Automaton has 9688 states and 18018 transitions. Word has length 83 [2020-12-22 06:02:23,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:23,620 INFO L481 AbstractCegarLoop]: Abstraction has 9688 states and 18018 transitions. [2020-12-22 06:02:23,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:02:23,620 INFO L276 IsEmpty]: Start isEmpty. Operand 9688 states and 18018 transitions. [2020-12-22 06:02:23,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 06:02:23,623 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:23,623 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 06:02:23,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:02:23,623 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 06:02:23,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:23,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1987200368, now seen corresponding path program 1 times [2020-12-22 06:02:23,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:23,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506222424] [2020-12-22 06:02:23,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:23,720 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 06:02:23,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506222424] [2020-12-22 06:02:23,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:23,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:23,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781548895] [2020-12-22 06:02:23,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:23,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:23,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:23,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:23,722 INFO L87 Difference]: Start difference. First operand 9688 states and 18018 transitions. Second operand 6 states. [2020-12-22 06:02:28,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:28,111 INFO L93 Difference]: Finished difference Result 37166 states and 68904 transitions. [2020-12-22 06:02:28,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 06:02:28,112 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-12-22 06:02:28,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:28,156 INFO L225 Difference]: With dead ends: 37166 [2020-12-22 06:02:28,156 INFO L226 Difference]: Without dead ends: 28754 [2020-12-22 06:02:28,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:02:28,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28754 states. [2020-12-22 06:02:29,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28754 to 14564. [2020-12-22 06:02:29,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14564 states. [2020-12-22 06:02:29,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14564 states to 14564 states and 26907 transitions. [2020-12-22 06:02:29,186 INFO L78 Accepts]: Start accepts. Automaton has 14564 states and 26907 transitions. Word has length 85 [2020-12-22 06:02:29,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:29,186 INFO L481 AbstractCegarLoop]: Abstraction has 14564 states and 26907 transitions. [2020-12-22 06:02:29,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:29,186 INFO L276 IsEmpty]: Start isEmpty. Operand 14564 states and 26907 transitions. [2020-12-22 06:02:29,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 06:02:29,190 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:29,190 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 06:02:29,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:02:29,190 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 06:02:29,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:29,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1671892718, now seen corresponding path program 1 times [2020-12-22 06:02:29,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:29,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971246428] [2020-12-22 06:02:29,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:29,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:29,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971246428] [2020-12-22 06:02:29,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:29,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:02:29,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676627005] [2020-12-22 06:02:29,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:29,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:29,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:29,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:29,294 INFO L87 Difference]: Start difference. First operand 14564 states and 26907 transitions. Second operand 4 states. [2020-12-22 06:02:31,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:31,926 INFO L93 Difference]: Finished difference Result 41017 states and 75852 transitions. [2020-12-22 06:02:31,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:02:31,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-12-22 06:02:31,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:31,960 INFO L225 Difference]: With dead ends: 41017 [2020-12-22 06:02:31,961 INFO L226 Difference]: Without dead ends: 26520 [2020-12-22 06:02:31,973 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 06:02:31,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26520 states. [2020-12-22 06:02:32,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26520 to 14564. [2020-12-22 06:02:32,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14564 states. [2020-12-22 06:02:32,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14564 states to 14564 states and 26479 transitions. [2020-12-22 06:02:32,813 INFO L78 Accepts]: Start accepts. Automaton has 14564 states and 26479 transitions. Word has length 85 [2020-12-22 06:02:32,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:32,813 INFO L481 AbstractCegarLoop]: Abstraction has 14564 states and 26479 transitions. [2020-12-22 06:02:32,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:32,813 INFO L276 IsEmpty]: Start isEmpty. Operand 14564 states and 26479 transitions. [2020-12-22 06:02:32,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 06:02:32,816 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:32,816 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 06:02:32,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:02:32,816 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 06:02:32,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:32,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1646487722, now seen corresponding path program 1 times [2020-12-22 06:02:32,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:32,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755887334] [2020-12-22 06:02:32,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:32,907 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 06:02:32,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755887334] [2020-12-22 06:02:32,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:32,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:32,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788428682] [2020-12-22 06:02:32,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:32,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:32,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:32,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:32,910 INFO L87 Difference]: Start difference. First operand 14564 states and 26479 transitions. Second operand 6 states. [2020-12-22 06:02:42,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:42,779 INFO L93 Difference]: Finished difference Result 153045 states and 282853 transitions. [2020-12-22 06:02:42,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 06:02:42,780 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2020-12-22 06:02:42,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:43,051 INFO L225 Difference]: With dead ends: 153045 [2020-12-22 06:02:43,051 INFO L226 Difference]: Without dead ends: 141342 [2020-12-22 06:02:43,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-12-22 06:02:43,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141342 states. [2020-12-22 06:02:45,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141342 to 28970. [2020-12-22 06:02:45,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28970 states. [2020-12-22 06:02:46,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28970 states to 28970 states and 52764 transitions. [2020-12-22 06:02:46,051 INFO L78 Accepts]: Start accepts. Automaton has 28970 states and 52764 transitions. Word has length 92 [2020-12-22 06:02:46,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:46,051 INFO L481 AbstractCegarLoop]: Abstraction has 28970 states and 52764 transitions. [2020-12-22 06:02:46,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:46,051 INFO L276 IsEmpty]: Start isEmpty. Operand 28970 states and 52764 transitions. [2020-12-22 06:02:46,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 06:02:46,057 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:46,057 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 06:02:46,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:02:46,057 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 06:02:46,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:46,058 INFO L82 PathProgramCache]: Analyzing trace with hash -748034288, now seen corresponding path program 1 times [2020-12-22 06:02:46,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:46,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322933695] [2020-12-22 06:02:46,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:46,138 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 06:02:46,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322933695] [2020-12-22 06:02:46,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:46,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:46,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940141697] [2020-12-22 06:02:46,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:46,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:46,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:46,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:46,140 INFO L87 Difference]: Start difference. First operand 28970 states and 52764 transitions. Second operand 5 states. [2020-12-22 06:02:51,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:51,869 INFO L93 Difference]: Finished difference Result 101401 states and 185857 transitions. [2020-12-22 06:02:51,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:02:51,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-12-22 06:02:51,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:52,010 INFO L225 Difference]: With dead ends: 101401 [2020-12-22 06:02:52,010 INFO L226 Difference]: Without dead ends: 78106 [2020-12-22 06:02:52,043 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 06:02:52,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78106 states. [2020-12-22 06:02:54,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78106 to 28196. [2020-12-22 06:02:54,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28196 states. [2020-12-22 06:02:54,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28196 states to 28196 states and 51410 transitions. [2020-12-22 06:02:54,358 INFO L78 Accepts]: Start accepts. Automaton has 28196 states and 51410 transitions. Word has length 94 [2020-12-22 06:02:54,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:54,358 INFO L481 AbstractCegarLoop]: Abstraction has 28196 states and 51410 transitions. [2020-12-22 06:02:54,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:54,358 INFO L276 IsEmpty]: Start isEmpty. Operand 28196 states and 51410 transitions. [2020-12-22 06:02:54,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 06:02:54,368 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:54,368 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 06:02:54,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:02:54,369 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 06:02:54,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:54,369 INFO L82 PathProgramCache]: Analyzing trace with hash 446946353, now seen corresponding path program 1 times [2020-12-22 06:02:54,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:54,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224115185] [2020-12-22 06:02:54,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:54,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:54,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224115185] [2020-12-22 06:02:54,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:54,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:54,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269627145] [2020-12-22 06:02:54,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:54,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:54,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:54,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:54,463 INFO L87 Difference]: Start difference. First operand 28196 states and 51410 transitions. Second operand 5 states. [2020-12-22 06:02:56,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:56,883 INFO L93 Difference]: Finished difference Result 56324 states and 102729 transitions. [2020-12-22 06:02:56,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:02:56,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-12-22 06:02:56,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:56,920 INFO L225 Difference]: With dead ends: 56324 [2020-12-22 06:02:56,921 INFO L226 Difference]: Without dead ends: 28207 [2020-12-22 06:02:56,935 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 06:02:56,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28207 states. [2020-12-22 06:02:58,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28207 to 28192. [2020-12-22 06:02:58,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28192 states. [2020-12-22 06:02:58,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28192 states to 28192 states and 51400 transitions. [2020-12-22 06:02:58,742 INFO L78 Accepts]: Start accepts. Automaton has 28192 states and 51400 transitions. Word has length 94 [2020-12-22 06:02:58,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:58,742 INFO L481 AbstractCegarLoop]: Abstraction has 28192 states and 51400 transitions. [2020-12-22 06:02:58,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:58,742 INFO L276 IsEmpty]: Start isEmpty. Operand 28192 states and 51400 transitions. [2020-12-22 06:02:58,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 06:02:58,747 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:58,747 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] [2020-12-22 06:02:58,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:02:58,748 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 06:02:58,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:58,748 INFO L82 PathProgramCache]: Analyzing trace with hash 991931691, now seen corresponding path program 1 times [2020-12-22 06:02:58,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:58,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920305761] [2020-12-22 06:02:58,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:58,859 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 06:02:58,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920305761] [2020-12-22 06:02:58,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:58,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:58,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092294172] [2020-12-22 06:02:58,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:58,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:58,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:58,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:58,862 INFO L87 Difference]: Start difference. First operand 28192 states and 51400 transitions. Second operand 5 states. [2020-12-22 06:03:01,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:01,911 INFO L93 Difference]: Finished difference Result 44042 states and 80528 transitions. [2020-12-22 06:03:01,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:03:01,912 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-12-22 06:03:01,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:01,966 INFO L225 Difference]: With dead ends: 44042 [2020-12-22 06:03:01,966 INFO L226 Difference]: Without dead ends: 44029 [2020-12-22 06:03:01,974 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 06:03:02,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44029 states. [2020-12-22 06:03:03,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44029 to 28216. [2020-12-22 06:03:03,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28216 states. [2020-12-22 06:03:04,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28216 states to 28216 states and 51424 transitions. [2020-12-22 06:03:04,015 INFO L78 Accepts]: Start accepts. Automaton has 28216 states and 51424 transitions. Word has length 95 [2020-12-22 06:03:04,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:04,015 INFO L481 AbstractCegarLoop]: Abstraction has 28216 states and 51424 transitions. [2020-12-22 06:03:04,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:04,015 INFO L276 IsEmpty]: Start isEmpty. Operand 28216 states and 51424 transitions. [2020-12-22 06:03:04,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 06:03:04,020 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:04,021 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] [2020-12-22 06:03:04,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 06:03:04,021 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 06:03:04,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:04,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1218822800, now seen corresponding path program 1 times [2020-12-22 06:03:04,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:04,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209484971] [2020-12-22 06:03:04,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:04,144 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 06:03:04,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209484971] [2020-12-22 06:03:04,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:04,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:03:04,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716920561] [2020-12-22 06:03:04,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:03:04,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:04,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:03:04,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:03:04,146 INFO L87 Difference]: Start difference. First operand 28216 states and 51424 transitions. Second operand 7 states. [2020-12-22 06:03:07,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:07,393 INFO L93 Difference]: Finished difference Result 45435 states and 82856 transitions. [2020-12-22 06:03:07,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 06:03:07,394 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-12-22 06:03:07,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:07,450 INFO L225 Difference]: With dead ends: 45435 [2020-12-22 06:03:07,450 INFO L226 Difference]: Without dead ends: 45422 [2020-12-22 06:03:07,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-12-22 06:03:07,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45422 states. [2020-12-22 06:03:09,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45422 to 28570. [2020-12-22 06:03:09,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28570 states. [2020-12-22 06:03:09,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28570 states to 28570 states and 51942 transitions. [2020-12-22 06:03:09,742 INFO L78 Accepts]: Start accepts. Automaton has 28570 states and 51942 transitions. Word has length 97 [2020-12-22 06:03:09,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:09,742 INFO L481 AbstractCegarLoop]: Abstraction has 28570 states and 51942 transitions. [2020-12-22 06:03:09,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:03:09,743 INFO L276 IsEmpty]: Start isEmpty. Operand 28570 states and 51942 transitions. [2020-12-22 06:03:09,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-22 06:03:09,746 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:09,746 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] [2020-12-22 06:03:09,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 06:03:09,747 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 06:03:09,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:09,747 INFO L82 PathProgramCache]: Analyzing trace with hash 73934544, now seen corresponding path program 1 times [2020-12-22 06:03:09,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:09,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429469682] [2020-12-22 06:03:09,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:09,874 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 06:03:09,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429469682] [2020-12-22 06:03:09,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:09,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:09,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780455141] [2020-12-22 06:03:09,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:09,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:09,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:09,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:09,883 INFO L87 Difference]: Start difference. First operand 28570 states and 51942 transitions. Second operand 5 states. [2020-12-22 06:03:18,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:18,238 INFO L93 Difference]: Finished difference Result 124872 states and 228002 transitions. [2020-12-22 06:03:18,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:03:18,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-12-22 06:03:18,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:18,397 INFO L225 Difference]: With dead ends: 124872 [2020-12-22 06:03:18,397 INFO L226 Difference]: Without dead ends: 99245 [2020-12-22 06:03:18,426 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 06:03:18,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99245 states. [2020-12-22 06:03:21,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99245 to 28626. [2020-12-22 06:03:21,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28626 states. [2020-12-22 06:03:21,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28626 states to 28626 states and 51998 transitions. [2020-12-22 06:03:21,063 INFO L78 Accepts]: Start accepts. Automaton has 28626 states and 51998 transitions. Word has length 104 [2020-12-22 06:03:21,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:21,064 INFO L481 AbstractCegarLoop]: Abstraction has 28626 states and 51998 transitions. [2020-12-22 06:03:21,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:21,064 INFO L276 IsEmpty]: Start isEmpty. Operand 28626 states and 51998 transitions. [2020-12-22 06:03:21,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 06:03:21,067 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:21,067 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] [2020-12-22 06:03:21,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 06:03:21,068 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 06:03:21,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:21,068 INFO L82 PathProgramCache]: Analyzing trace with hash -676196177, now seen corresponding path program 1 times [2020-12-22 06:03:21,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:21,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210310039] [2020-12-22 06:03:21,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:21,161 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 06:03:21,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210310039] [2020-12-22 06:03:21,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:21,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:03:21,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561215740] [2020-12-22 06:03:21,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:21,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:21,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:21,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:21,163 INFO L87 Difference]: Start difference. First operand 28626 states and 51998 transitions. Second operand 3 states. [2020-12-22 06:03:24,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:24,584 INFO L93 Difference]: Finished difference Result 71926 states and 131040 transitions. [2020-12-22 06:03:24,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:24,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 06:03:24,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:24,652 INFO L225 Difference]: With dead ends: 71926 [2020-12-22 06:03:24,652 INFO L226 Difference]: Without dead ends: 46243 [2020-12-22 06:03:24,672 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 06:03:24,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46243 states. [2020-12-22 06:03:28,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46243 to 46230. [2020-12-22 06:03:28,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46230 states. [2020-12-22 06:03:28,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46230 states to 46230 states and 84276 transitions. [2020-12-22 06:03:28,219 INFO L78 Accepts]: Start accepts. Automaton has 46230 states and 84276 transitions. Word has length 105 [2020-12-22 06:03:28,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:28,219 INFO L481 AbstractCegarLoop]: Abstraction has 46230 states and 84276 transitions. [2020-12-22 06:03:28,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:28,220 INFO L276 IsEmpty]: Start isEmpty. Operand 46230 states and 84276 transitions. [2020-12-22 06:03:28,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 06:03:28,224 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:28,225 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] [2020-12-22 06:03:28,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 06:03:28,225 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 06:03:28,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:28,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1353994950, now seen corresponding path program 1 times [2020-12-22 06:03:28,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:28,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543233960] [2020-12-22 06:03:28,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:28,298 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 06:03:28,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543233960] [2020-12-22 06:03:28,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:28,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:28,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987746740] [2020-12-22 06:03:28,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:28,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:28,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:28,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:28,303 INFO L87 Difference]: Start difference. First operand 46230 states and 84276 transitions. Second operand 3 states. [2020-12-22 06:03:35,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:35,584 INFO L93 Difference]: Finished difference Result 126652 states and 232042 transitions. [2020-12-22 06:03:35,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:35,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 06:03:35,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:35,737 INFO L225 Difference]: With dead ends: 126652 [2020-12-22 06:03:35,738 INFO L226 Difference]: Without dead ends: 84541 [2020-12-22 06:03:35,780 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 06:03:35,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84541 states. [2020-12-22 06:03:39,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84541 to 45642. [2020-12-22 06:03:39,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45642 states. [2020-12-22 06:03:39,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45642 states to 45642 states and 83016 transitions. [2020-12-22 06:03:39,675 INFO L78 Accepts]: Start accepts. Automaton has 45642 states and 83016 transitions. Word has length 105 [2020-12-22 06:03:39,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:39,675 INFO L481 AbstractCegarLoop]: Abstraction has 45642 states and 83016 transitions. [2020-12-22 06:03:39,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:39,675 INFO L276 IsEmpty]: Start isEmpty. Operand 45642 states and 83016 transitions. [2020-12-22 06:03:39,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 06:03:39,682 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:39,682 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 06:03:39,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 06:03:39,682 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 06:03:39,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:39,683 INFO L82 PathProgramCache]: Analyzing trace with hash -891840712, now seen corresponding path program 1 times [2020-12-22 06:03:39,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:39,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703795575] [2020-12-22 06:03:39,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:39,775 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 06:03:39,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703795575] [2020-12-22 06:03:39,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:39,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:03:39,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792155638] [2020-12-22 06:03:39,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:39,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:39,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:39,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:39,777 INFO L87 Difference]: Start difference. First operand 45642 states and 83016 transitions. Second operand 5 states. [2020-12-22 06:03:46,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:46,586 INFO L93 Difference]: Finished difference Result 123924 states and 227389 transitions. [2020-12-22 06:03:46,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:03:46,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-12-22 06:03:46,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:46,850 INFO L225 Difference]: With dead ends: 123924 [2020-12-22 06:03:46,850 INFO L226 Difference]: Without dead ends: 82047 [2020-12-22 06:03:46,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:03:46,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82047 states. [2020-12-22 06:03:50,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82047 to 45642. [2020-12-22 06:03:50,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45642 states. [2020-12-22 06:03:50,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45642 states to 45642 states and 82596 transitions. [2020-12-22 06:03:50,807 INFO L78 Accepts]: Start accepts. Automaton has 45642 states and 82596 transitions. Word has length 108 [2020-12-22 06:03:50,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:50,807 INFO L481 AbstractCegarLoop]: Abstraction has 45642 states and 82596 transitions. [2020-12-22 06:03:50,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:50,808 INFO L276 IsEmpty]: Start isEmpty. Operand 45642 states and 82596 transitions. [2020-12-22 06:03:50,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 06:03:50,813 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:50,814 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] [2020-12-22 06:03:50,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 06:03:50,814 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 06:03:50,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:50,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1544608311, now seen corresponding path program 1 times [2020-12-22 06:03:50,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:50,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372140115] [2020-12-22 06:03:50,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:50,998 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 06:03:50,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372140115] [2020-12-22 06:03:50,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:50,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:03:50,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316959065] [2020-12-22 06:03:51,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:03:51,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:51,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:03:51,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:03:51,002 INFO L87 Difference]: Start difference. First operand 45642 states and 82596 transitions. Second operand 6 states. [2020-12-22 06:04:10,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:10,004 INFO L93 Difference]: Finished difference Result 257917 states and 472646 transitions. [2020-12-22 06:04:10,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 06:04:10,005 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2020-12-22 06:04:10,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:10,568 INFO L225 Difference]: With dead ends: 257917 [2020-12-22 06:04:10,569 INFO L226 Difference]: Without dead ends: 212408 [2020-12-22 06:04:10,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-12-22 06:04:10,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212408 states. [2020-12-22 06:04:15,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212408 to 45208. [2020-12-22 06:04:15,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45208 states. [2020-12-22 06:04:15,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45208 states to 45208 states and 81728 transitions. [2020-12-22 06:04:15,694 INFO L78 Accepts]: Start accepts. Automaton has 45208 states and 81728 transitions. Word has length 109 [2020-12-22 06:04:15,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:15,695 INFO L481 AbstractCegarLoop]: Abstraction has 45208 states and 81728 transitions. [2020-12-22 06:04:15,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:04:15,695 INFO L276 IsEmpty]: Start isEmpty. Operand 45208 states and 81728 transitions. [2020-12-22 06:04:15,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 06:04:15,700 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:15,701 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] [2020-12-22 06:04:15,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 06:04:15,701 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 06:04:15,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:15,701 INFO L82 PathProgramCache]: Analyzing trace with hash 432954899, now seen corresponding path program 1 times [2020-12-22 06:04:15,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:15,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42522481] [2020-12-22 06:04:15,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:15,882 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 06:04:15,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42522481] [2020-12-22 06:04:15,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:15,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:04:15,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784374800] [2020-12-22 06:04:15,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:04:15,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:15,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:04:15,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:15,884 INFO L87 Difference]: Start difference. First operand 45208 states and 81728 transitions. Second operand 5 states. [2020-12-22 06:04:17,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:17,998 INFO L93 Difference]: Finished difference Result 67416 states and 121955 transitions. [2020-12-22 06:04:17,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:04:17,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-12-22 06:04:17,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:18,032 INFO L225 Difference]: With dead ends: 67416 [2020-12-22 06:04:18,032 INFO L226 Difference]: Without dead ends: 22238 [2020-12-22 06:04:18,055 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 06:04:18,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22238 states. [2020-12-22 06:04:19,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22238 to 22238. [2020-12-22 06:04:19,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22238 states. [2020-12-22 06:04:19,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22238 states to 22238 states and 40262 transitions. [2020-12-22 06:04:19,973 INFO L78 Accepts]: Start accepts. Automaton has 22238 states and 40262 transitions. Word has length 109 [2020-12-22 06:04:19,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:19,973 INFO L481 AbstractCegarLoop]: Abstraction has 22238 states and 40262 transitions. [2020-12-22 06:04:19,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:04:19,974 INFO L276 IsEmpty]: Start isEmpty. Operand 22238 states and 40262 transitions. [2020-12-22 06:04:19,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 06:04:19,977 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:19,977 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] [2020-12-22 06:04:19,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 06:04:19,977 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 06:04:19,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:19,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1895220457, now seen corresponding path program 1 times [2020-12-22 06:04:19,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:19,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405962174] [2020-12-22 06:04:19,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:20,052 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 06:04:20,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405962174] [2020-12-22 06:04:20,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:20,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:04:20,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568338757] [2020-12-22 06:04:20,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:04:20,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:20,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:04:20,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:20,055 INFO L87 Difference]: Start difference. First operand 22238 states and 40262 transitions. Second operand 5 states. [2020-12-22 06:04:27,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:27,205 INFO L93 Difference]: Finished difference Result 89322 states and 161793 transitions. [2020-12-22 06:04:27,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:04:27,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-12-22 06:04:27,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:27,308 INFO L225 Difference]: With dead ends: 89322 [2020-12-22 06:04:27,309 INFO L226 Difference]: Without dead ends: 67163 [2020-12-22 06:04:27,331 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 06:04:27,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67163 states. [2020-12-22 06:04:29,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67163 to 22300. [2020-12-22 06:04:29,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22300 states. [2020-12-22 06:04:29,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22300 states to 22300 states and 40324 transitions. [2020-12-22 06:04:29,491 INFO L78 Accepts]: Start accepts. Automaton has 22300 states and 40324 transitions. Word has length 111 [2020-12-22 06:04:29,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:29,491 INFO L481 AbstractCegarLoop]: Abstraction has 22300 states and 40324 transitions. [2020-12-22 06:04:29,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:04:29,491 INFO L276 IsEmpty]: Start isEmpty. Operand 22300 states and 40324 transitions. [2020-12-22 06:04:29,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 06:04:29,494 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:29,495 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] [2020-12-22 06:04:29,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 06:04:29,495 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 06:04:29,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:29,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1592548216, now seen corresponding path program 1 times [2020-12-22 06:04:29,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:29,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225218078] [2020-12-22 06:04:29,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:29,567 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 06:04:29,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225218078] [2020-12-22 06:04:29,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:29,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:04:29,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540664653] [2020-12-22 06:04:29,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:04:29,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:29,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:04:29,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:29,570 INFO L87 Difference]: Start difference. First operand 22300 states and 40324 transitions. Second operand 4 states. [2020-12-22 06:04:34,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:34,642 INFO L93 Difference]: Finished difference Result 58567 states and 106870 transitions. [2020-12-22 06:04:34,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:04:34,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-12-22 06:04:34,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:34,697 INFO L225 Difference]: With dead ends: 58567 [2020-12-22 06:04:34,698 INFO L226 Difference]: Without dead ends: 36333 [2020-12-22 06:04:34,717 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 06:04:34,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36333 states. [2020-12-22 06:04:36,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36333 to 22276. [2020-12-22 06:04:36,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22276 states. [2020-12-22 06:04:36,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22276 states to 22276 states and 40276 transitions. [2020-12-22 06:04:36,633 INFO L78 Accepts]: Start accepts. Automaton has 22276 states and 40276 transitions. Word has length 112 [2020-12-22 06:04:36,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:36,633 INFO L481 AbstractCegarLoop]: Abstraction has 22276 states and 40276 transitions. [2020-12-22 06:04:36,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:04:36,633 INFO L276 IsEmpty]: Start isEmpty. Operand 22276 states and 40276 transitions. [2020-12-22 06:04:36,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 06:04:36,637 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:36,637 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] [2020-12-22 06:04:36,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 06:04:36,640 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 06:04:36,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:36,641 INFO L82 PathProgramCache]: Analyzing trace with hash -994205378, now seen corresponding path program 1 times [2020-12-22 06:04:36,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:36,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814604648] [2020-12-22 06:04:36,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:36,782 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 06:04:36,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814604648] [2020-12-22 06:04:36,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:36,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:04:36,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975580857] [2020-12-22 06:04:36,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:04:36,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:36,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:04:36,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:36,785 INFO L87 Difference]: Start difference. First operand 22276 states and 40276 transitions. Second operand 5 states. [2020-12-22 06:04:42,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:42,253 INFO L93 Difference]: Finished difference Result 70448 states and 127602 transitions. [2020-12-22 06:04:42,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:04:42,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-12-22 06:04:42,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:42,328 INFO L225 Difference]: With dead ends: 70448 [2020-12-22 06:04:42,328 INFO L226 Difference]: Without dead ends: 52554 [2020-12-22 06:04:42,347 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 06:04:42,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52554 states. [2020-12-22 06:04:44,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52554 to 22276. [2020-12-22 06:04:44,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22276 states. [2020-12-22 06:04:44,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22276 states to 22276 states and 40262 transitions. [2020-12-22 06:04:44,578 INFO L78 Accepts]: Start accepts. Automaton has 22276 states and 40262 transitions. Word has length 114 [2020-12-22 06:04:44,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:44,578 INFO L481 AbstractCegarLoop]: Abstraction has 22276 states and 40262 transitions. [2020-12-22 06:04:44,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:04:44,578 INFO L276 IsEmpty]: Start isEmpty. Operand 22276 states and 40262 transitions. [2020-12-22 06:04:44,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-22 06:04:44,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:44,581 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] [2020-12-22 06:04:44,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 06:04:44,582 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 06:04:44,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:44,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1286960577, now seen corresponding path program 1 times [2020-12-22 06:04:44,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:44,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107220794] [2020-12-22 06:04:44,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:44,670 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 06:04:44,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107220794] [2020-12-22 06:04:44,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:44,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:04:44,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527823388] [2020-12-22 06:04:44,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:04:44,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:44,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:04:44,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:04:44,672 INFO L87 Difference]: Start difference. First operand 22276 states and 40262 transitions. Second operand 6 states. [2020-12-22 06:04:47,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:47,069 INFO L93 Difference]: Finished difference Result 40339 states and 72750 transitions. [2020-12-22 06:04:47,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:04:47,070 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2020-12-22 06:04:47,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:47,097 INFO L225 Difference]: With dead ends: 40339 [2020-12-22 06:04:47,097 INFO L226 Difference]: Without dead ends: 22289 [2020-12-22 06:04:47,110 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 06:04:47,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22289 states. [2020-12-22 06:04:49,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22289 to 22276. [2020-12-22 06:04:49,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22276 states. [2020-12-22 06:04:49,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22276 states to 22276 states and 39996 transitions. [2020-12-22 06:04:49,065 INFO L78 Accepts]: Start accepts. Automaton has 22276 states and 39996 transitions. Word has length 121 [2020-12-22 06:04:49,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:49,065 INFO L481 AbstractCegarLoop]: Abstraction has 22276 states and 39996 transitions. [2020-12-22 06:04:49,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:04:49,065 INFO L276 IsEmpty]: Start isEmpty. Operand 22276 states and 39996 transitions. [2020-12-22 06:04:49,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-22 06:04:49,069 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:49,069 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 06:04:49,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-22 06:04:49,069 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 06:04:49,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:49,070 INFO L82 PathProgramCache]: Analyzing trace with hash -488634045, now seen corresponding path program 1 times [2020-12-22 06:04:49,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:49,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411568214] [2020-12-22 06:04:49,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:49,183 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 06:04:49,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411568214] [2020-12-22 06:04:49,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:49,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:04:49,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719536921] [2020-12-22 06:04:49,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:04:49,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:49,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:04:49,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:49,185 INFO L87 Difference]: Start difference. First operand 22276 states and 39996 transitions. Second operand 5 states. [2020-12-22 06:04:52,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:52,481 INFO L93 Difference]: Finished difference Result 38344 states and 69114 transitions. [2020-12-22 06:04:52,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:04:52,482 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-12-22 06:04:52,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:52,525 INFO L225 Difference]: With dead ends: 38344 [2020-12-22 06:04:52,525 INFO L226 Difference]: Without dead ends: 38331 [2020-12-22 06:04:52,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:04:52,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38331 states. [2020-12-22 06:04:54,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38331 to 22318. [2020-12-22 06:04:54,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22318 states. [2020-12-22 06:04:54,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22318 states to 22318 states and 40031 transitions. [2020-12-22 06:04:54,729 INFO L78 Accepts]: Start accepts. Automaton has 22318 states and 40031 transitions. Word has length 122 [2020-12-22 06:04:54,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:54,729 INFO L481 AbstractCegarLoop]: Abstraction has 22318 states and 40031 transitions. [2020-12-22 06:04:54,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:04:54,729 INFO L276 IsEmpty]: Start isEmpty. Operand 22318 states and 40031 transitions. [2020-12-22 06:04:54,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-22 06:04:54,733 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:54,733 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:04:54,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 06:04:54,733 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 06:04:54,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:54,734 INFO L82 PathProgramCache]: Analyzing trace with hash 841804539, now seen corresponding path program 1 times [2020-12-22 06:04:54,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:54,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757231990] [2020-12-22 06:04:54,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:54,849 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 06:04:54,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757231990] [2020-12-22 06:04:54,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:54,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:04:54,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621886132] [2020-12-22 06:04:54,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:04:54,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:54,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:04:54,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:04:54,851 INFO L87 Difference]: Start difference. First operand 22318 states and 40031 transitions. Second operand 7 states. [2020-12-22 06:05:06,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:06,299 INFO L93 Difference]: Finished difference Result 137495 states and 250210 transitions. [2020-12-22 06:05:06,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 06:05:06,315 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-12-22 06:05:06,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:06,525 INFO L225 Difference]: With dead ends: 137495 [2020-12-22 06:05:06,525 INFO L226 Difference]: Without dead ends: 117225 [2020-12-22 06:05:06,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 06:05:06,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117225 states. [2020-12-22 06:05:11,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117225 to 43819. [2020-12-22 06:05:11,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43819 states. [2020-12-22 06:05:11,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43819 states to 43819 states and 78642 transitions. [2020-12-22 06:05:11,386 INFO L78 Accepts]: Start accepts. Automaton has 43819 states and 78642 transitions. Word has length 141 [2020-12-22 06:05:11,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:11,386 INFO L481 AbstractCegarLoop]: Abstraction has 43819 states and 78642 transitions. [2020-12-22 06:05:11,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:05:11,386 INFO L276 IsEmpty]: Start isEmpty. Operand 43819 states and 78642 transitions. [2020-12-22 06:05:11,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 06:05:11,392 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:11,392 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 06:05:11,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-22 06:05:11,392 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 06:05:11,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:11,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1351773971, now seen corresponding path program 1 times [2020-12-22 06:05:11,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:11,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819581954] [2020-12-22 06:05:11,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:11,468 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 06:05:11,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819581954] [2020-12-22 06:05:11,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:11,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:05:11,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682349605] [2020-12-22 06:05:11,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:05:11,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:11,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:05:11,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:05:11,470 INFO L87 Difference]: Start difference. First operand 43819 states and 78642 transitions. Second operand 3 states. [2020-12-22 06:05:19,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:19,241 INFO L93 Difference]: Finished difference Result 112792 states and 203825 transitions. [2020-12-22 06:05:19,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:05:19,241 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-12-22 06:05:19,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:19,335 INFO L225 Difference]: With dead ends: 112792 [2020-12-22 06:05:19,336 INFO L226 Difference]: Without dead ends: 72059 [2020-12-22 06:05:19,365 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 06:05:19,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72059 states. [2020-12-22 06:05:23,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72059 to 42985. [2020-12-22 06:05:23,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42985 states. [2020-12-22 06:05:23,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42985 states to 42985 states and 77004 transitions. [2020-12-22 06:05:23,908 INFO L78 Accepts]: Start accepts. Automaton has 42985 states and 77004 transitions. Word has length 142 [2020-12-22 06:05:23,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:23,908 INFO L481 AbstractCegarLoop]: Abstraction has 42985 states and 77004 transitions. [2020-12-22 06:05:23,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:05:23,908 INFO L276 IsEmpty]: Start isEmpty. Operand 42985 states and 77004 transitions. [2020-12-22 06:05:23,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-22 06:05:23,915 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:23,916 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 06:05:23,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-22 06:05:23,916 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 06:05:23,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:23,916 INFO L82 PathProgramCache]: Analyzing trace with hash -892043678, now seen corresponding path program 1 times [2020-12-22 06:05:23,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:23,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903088980] [2020-12-22 06:05:23,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:23,998 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 06:05:23,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903088980] [2020-12-22 06:05:23,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:23,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:05:23,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919512841] [2020-12-22 06:05:24,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:05:24,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:24,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:05:24,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:05:24,000 INFO L87 Difference]: Start difference. First operand 42985 states and 77004 transitions. Second operand 5 states.