/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_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:59:45,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:59:45,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:59:45,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:59:45,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:59:45,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:59:45,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:59:45,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:59:45,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:59:45,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:59:45,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:59:45,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:59:45,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:59:45,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:59:45,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:59:45,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:59:45,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:59:45,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:59:45,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:59:45,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:59:45,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:59:45,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:59:45,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:59:45,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:59:45,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:59:45,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:59:45,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:59:45,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:59:45,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:59:45,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:59:45,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:59:45,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:59:45,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:59:45,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:59:45,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:59:45,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:59:45,279 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:59:45,308 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:59:45,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:59:45,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:59:45,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:59:45,311 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:59:45,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:59:45,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:59:45,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:59:45,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:59:45,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:59:45,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:59:45,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:59:45,313 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:59:45,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:59:45,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:59:45,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:59:45,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:59:45,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:59:45,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:59:45,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:59:45,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:59:45,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:59:45,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:59:45,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:59:45,316 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:59:45,317 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:59:45,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:59:45,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:59:45,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:59:45,693 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:59:45,693 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:59:45,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c [2020-12-22 05:59:45,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/211ef4d31/ebff9f205f3c4150911492f7a8c6ed00/FLAGd20087426 [2020-12-22 05:59:46,551 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:59:46,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c [2020-12-22 05:59:46,599 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/211ef4d31/ebff9f205f3c4150911492f7a8c6ed00/FLAGd20087426 [2020-12-22 05:59:46,779 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/211ef4d31/ebff9f205f3c4150911492f7a8c6ed00 [2020-12-22 05:59:46,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:59:46,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:59:46,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:59:46,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:59:46,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:59:46,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:59:46" (1/1) ... [2020-12-22 05:59:46,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c76af24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:46, skipping insertion in model container [2020-12-22 05:59:46,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:59:46" (1/1) ... [2020-12-22 05:59:46,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:59:46,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:59:47,584 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_product21.cil.c[66186,66199] [2020-12-22 05:59:47,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:59:47,649 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:59:47,757 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_product21.cil.c[66186,66199] [2020-12-22 05:59:47,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:59:47,851 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:59:47,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:47 WrapperNode [2020-12-22 05:59:47,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:59:47,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:59:47,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:59:47,854 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:59:47,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:47" (1/1) ... [2020-12-22 05:59:47,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:47" (1/1) ... [2020-12-22 05:59:48,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:59:48,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:59:48,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:59:48,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:59:48,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:47" (1/1) ... [2020-12-22 05:59:48,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:47" (1/1) ... [2020-12-22 05:59:48,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:47" (1/1) ... [2020-12-22 05:59:48,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:47" (1/1) ... [2020-12-22 05:59:48,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:47" (1/1) ... [2020-12-22 05:59:48,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:47" (1/1) ... [2020-12-22 05:59:48,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:47" (1/1) ... [2020-12-22 05:59:48,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:59:48,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:59:48,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:59:48,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:59:48,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:59:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:59:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:59:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:59:48,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:59:55,985 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:59:55,985 INFO L299 CfgBuilder]: Removed 761 assume(true) statements. [2020-12-22 05:59:55,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:59:55 BoogieIcfgContainer [2020-12-22 05:59:55,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:59:55,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:59:55,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:59:55,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:59:55,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:59:46" (1/3) ... [2020-12-22 05:59:55,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14796716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:59:55, skipping insertion in model container [2020-12-22 05:59:55,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:47" (2/3) ... [2020-12-22 05:59:55,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14796716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:59:55, skipping insertion in model container [2020-12-22 05:59:55,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:59:55" (3/3) ... [2020-12-22 05:59:56,000 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product21.cil.c [2020-12-22 05:59:56,006 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:59:56,014 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 05:59:56,032 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 05:59:56,074 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:59:56,074 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:59:56,074 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:59:56,074 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:59:56,074 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:59:56,074 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:59:56,075 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:59:56,075 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:59:56,135 INFO L276 IsEmpty]: Start isEmpty. Operand 3457 states. [2020-12-22 05:59:56,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 05:59:56,157 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:56,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:56,158 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:56,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:56,165 INFO L82 PathProgramCache]: Analyzing trace with hash -909233364, now seen corresponding path program 1 times [2020-12-22 05:59:56,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:56,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601236472] [2020-12-22 05:59:56,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:56,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:56,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601236472] [2020-12-22 05:59:56,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:56,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:56,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498953538] [2020-12-22 05:59:56,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:59:56,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:56,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:59:56,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:56,657 INFO L87 Difference]: Start difference. First operand 3457 states. Second operand 3 states. [2020-12-22 05:59:57,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:57,083 INFO L93 Difference]: Finished difference Result 10291 states and 19469 transitions. [2020-12-22 05:59:57,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:59:57,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-12-22 05:59:57,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:57,165 INFO L225 Difference]: With dead ends: 10291 [2020-12-22 05:59:57,166 INFO L226 Difference]: Without dead ends: 6839 [2020-12-22 05:59:57,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:57,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6839 states. [2020-12-22 05:59:57,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6839 to 3453. [2020-12-22 05:59:57,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3453 states. [2020-12-22 05:59:57,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3453 states to 3453 states and 6520 transitions. [2020-12-22 05:59:57,428 INFO L78 Accepts]: Start accepts. Automaton has 3453 states and 6520 transitions. Word has length 52 [2020-12-22 05:59:57,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:57,429 INFO L481 AbstractCegarLoop]: Abstraction has 3453 states and 6520 transitions. [2020-12-22 05:59:57,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:59:57,429 INFO L276 IsEmpty]: Start isEmpty. Operand 3453 states and 6520 transitions. [2020-12-22 05:59:57,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 05:59:57,436 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:57,436 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 05:59:57,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:59:57,438 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:57,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:57,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1312170843, now seen corresponding path program 1 times [2020-12-22 05:59:57,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:57,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428207813] [2020-12-22 05:59:57,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:57,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:57,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428207813] [2020-12-22 05:59:57,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:57,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:59:57,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566862495] [2020-12-22 05:59:57,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:59:57,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:57,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:59:57,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:57,667 INFO L87 Difference]: Start difference. First operand 3453 states and 6520 transitions. Second operand 6 states. [2020-12-22 05:59:58,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:58,419 INFO L93 Difference]: Finished difference Result 13587 states and 25677 transitions. [2020-12-22 05:59:58,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:59:58,420 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-12-22 05:59:58,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:58,484 INFO L225 Difference]: With dead ends: 13587 [2020-12-22 05:59:58,484 INFO L226 Difference]: Without dead ends: 10177 [2020-12-22 05:59:58,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:59:58,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10177 states. [2020-12-22 05:59:58,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10177 to 3449. [2020-12-22 05:59:58,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3449 states. [2020-12-22 05:59:58,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 6509 transitions. [2020-12-22 05:59:58,829 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 6509 transitions. Word has length 59 [2020-12-22 05:59:58,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:58,830 INFO L481 AbstractCegarLoop]: Abstraction has 3449 states and 6509 transitions. [2020-12-22 05:59:58,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:59:58,830 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 6509 transitions. [2020-12-22 05:59:58,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 05:59:58,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:58,842 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 05:59:58,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:59:58,842 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:58,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:58,845 INFO L82 PathProgramCache]: Analyzing trace with hash -2111728846, now seen corresponding path program 1 times [2020-12-22 05:59:58,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:58,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126496764] [2020-12-22 05:59:58,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:58,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:58,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126496764] [2020-12-22 05:59:58,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:58,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:58,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234197141] [2020-12-22 05:59:58,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:58,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:58,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:58,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:58,980 INFO L87 Difference]: Start difference. First operand 3449 states and 6509 transitions. Second operand 4 states. [2020-12-22 05:59:59,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:59,676 INFO L93 Difference]: Finished difference Result 10235 states and 19336 transitions. [2020-12-22 05:59:59,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:59,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-12-22 05:59:59,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:59,730 INFO L225 Difference]: With dead ends: 10235 [2020-12-22 05:59:59,731 INFO L226 Difference]: Without dead ends: 6829 [2020-12-22 05:59:59,737 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 05:59:59,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6829 states. [2020-12-22 05:59:59,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6829 to 3449. [2020-12-22 05:59:59,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3449 states. [2020-12-22 05:59:59,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 6500 transitions. [2020-12-22 05:59:59,917 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 6500 transitions. Word has length 61 [2020-12-22 05:59:59,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:59,924 INFO L481 AbstractCegarLoop]: Abstraction has 3449 states and 6500 transitions. [2020-12-22 05:59:59,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:59,924 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 6500 transitions. [2020-12-22 05:59:59,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 05:59:59,930 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:59,930 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] [2020-12-22 05:59:59,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:59:59,930 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 05:59:59,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:59,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1212715007, now seen corresponding path program 1 times [2020-12-22 05:59:59,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:59,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747764028] [2020-12-22 05:59:59,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:00,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:00,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747764028] [2020-12-22 06:00:00,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:00,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:00,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084559928] [2020-12-22 06:00:00,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:00,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:00,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:00,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:00,056 INFO L87 Difference]: Start difference. First operand 3449 states and 6500 transitions. Second operand 4 states. [2020-12-22 06:00:00,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:00,674 INFO L93 Difference]: Finished difference Result 10235 states and 19318 transitions. [2020-12-22 06:00:00,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:00,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-12-22 06:00:00,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:00,694 INFO L225 Difference]: With dead ends: 10235 [2020-12-22 06:00:00,694 INFO L226 Difference]: Without dead ends: 6829 [2020-12-22 06:00:00,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:00,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6829 states. [2020-12-22 06:00:00,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6829 to 3449. [2020-12-22 06:00:00,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3449 states. [2020-12-22 06:00:00,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 6491 transitions. [2020-12-22 06:00:00,876 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 6491 transitions. Word has length 63 [2020-12-22 06:00:00,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:00,877 INFO L481 AbstractCegarLoop]: Abstraction has 3449 states and 6491 transitions. [2020-12-22 06:00:00,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:00,877 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 6491 transitions. [2020-12-22 06:00:00,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 06:00:00,881 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:00,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:00,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:00:00,881 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:00,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:00,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1504119602, now seen corresponding path program 1 times [2020-12-22 06:00:00,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:00,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933259124] [2020-12-22 06:00:00,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:00,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:00,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933259124] [2020-12-22 06:00:00,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:00,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:00,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697722308] [2020-12-22 06:00:00,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:00,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:00,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:00,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:00,950 INFO L87 Difference]: Start difference. First operand 3449 states and 6491 transitions. Second operand 4 states. [2020-12-22 06:00:01,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:01,938 INFO L93 Difference]: Finished difference Result 16935 states and 31962 transitions. [2020-12-22 06:00:01,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:01,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-12-22 06:00:01,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:01,982 INFO L225 Difference]: With dead ends: 16935 [2020-12-22 06:00:01,983 INFO L226 Difference]: Without dead ends: 13529 [2020-12-22 06:00:01,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:02,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13529 states. [2020-12-22 06:00:02,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13529 to 3449. [2020-12-22 06:00:02,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3449 states. [2020-12-22 06:00:02,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 6487 transitions. [2020-12-22 06:00:02,293 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 6487 transitions. Word has length 65 [2020-12-22 06:00:02,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:02,294 INFO L481 AbstractCegarLoop]: Abstraction has 3449 states and 6487 transitions. [2020-12-22 06:00:02,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:02,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 6487 transitions. [2020-12-22 06:00:02,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 06:00:02,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:02,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:02,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:00:02,299 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:02,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:02,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1842272334, now seen corresponding path program 1 times [2020-12-22 06:00:02,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:02,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506174227] [2020-12-22 06:00:02,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:02,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:02,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506174227] [2020-12-22 06:00:02,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:02,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:02,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79432714] [2020-12-22 06:00:02,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:02,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:02,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:02,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:02,374 INFO L87 Difference]: Start difference. First operand 3449 states and 6487 transitions. Second operand 4 states. [2020-12-22 06:00:03,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:03,002 INFO L93 Difference]: Finished difference Result 13564 states and 25591 transitions. [2020-12-22 06:00:03,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:03,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-12-22 06:00:03,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:03,029 INFO L225 Difference]: With dead ends: 13564 [2020-12-22 06:00:03,029 INFO L226 Difference]: Without dead ends: 10137 [2020-12-22 06:00:03,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:03,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10137 states. [2020-12-22 06:00:03,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10137 to 3431. [2020-12-22 06:00:03,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3431 states. [2020-12-22 06:00:03,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 6456 transitions. [2020-12-22 06:00:03,242 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 6456 transitions. Word has length 65 [2020-12-22 06:00:03,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:03,243 INFO L481 AbstractCegarLoop]: Abstraction has 3431 states and 6456 transitions. [2020-12-22 06:00:03,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:03,243 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 6456 transitions. [2020-12-22 06:00:03,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:00:03,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:03,246 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] [2020-12-22 06:00:03,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:00:03,247 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:03,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:03,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1910731689, now seen corresponding path program 1 times [2020-12-22 06:00:03,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:03,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106237828] [2020-12-22 06:00:03,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:03,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:03,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106237828] [2020-12-22 06:00:03,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:03,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:03,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800958388] [2020-12-22 06:00:03,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:03,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:03,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:03,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:03,339 INFO L87 Difference]: Start difference. First operand 3431 states and 6456 transitions. Second operand 4 states. [2020-12-22 06:00:03,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:03,903 INFO L93 Difference]: Finished difference Result 10199 states and 19231 transitions. [2020-12-22 06:00:03,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:03,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-12-22 06:00:03,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:03,925 INFO L225 Difference]: With dead ends: 10199 [2020-12-22 06:00:03,925 INFO L226 Difference]: Without dead ends: 6790 [2020-12-22 06:00:03,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:03,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6790 states. [2020-12-22 06:00:04,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6790 to 3431. [2020-12-22 06:00:04,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3431 states. [2020-12-22 06:00:04,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 6450 transitions. [2020-12-22 06:00:04,198 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 6450 transitions. Word has length 66 [2020-12-22 06:00:04,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:04,199 INFO L481 AbstractCegarLoop]: Abstraction has 3431 states and 6450 transitions. [2020-12-22 06:00:04,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:04,199 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 6450 transitions. [2020-12-22 06:00:04,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 06:00:04,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:04,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:04,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:00:04,203 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:04,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:04,204 INFO L82 PathProgramCache]: Analyzing trace with hash 867823383, now seen corresponding path program 1 times [2020-12-22 06:00:04,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:04,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702008233] [2020-12-22 06:00:04,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:04,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702008233] [2020-12-22 06:00:04,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:04,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:04,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436194346] [2020-12-22 06:00:04,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:04,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:04,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:04,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:04,268 INFO L87 Difference]: Start difference. First operand 3431 states and 6450 transitions. Second operand 4 states. [2020-12-22 06:00:04,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:04,756 INFO L93 Difference]: Finished difference Result 10199 states and 19219 transitions. [2020-12-22 06:00:04,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:04,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-12-22 06:00:04,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:04,778 INFO L225 Difference]: With dead ends: 10199 [2020-12-22 06:00:04,779 INFO L226 Difference]: Without dead ends: 6790 [2020-12-22 06:00:04,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:04,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6790 states. [2020-12-22 06:00:04,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6790 to 3431. [2020-12-22 06:00:04,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3431 states. [2020-12-22 06:00:04,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 6444 transitions. [2020-12-22 06:00:04,970 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 6444 transitions. Word has length 67 [2020-12-22 06:00:04,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:04,971 INFO L481 AbstractCegarLoop]: Abstraction has 3431 states and 6444 transitions. [2020-12-22 06:00:04,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:04,971 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 6444 transitions. [2020-12-22 06:00:04,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:00:04,981 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:04,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:04,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:00:04,982 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:04,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:04,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1926519908, now seen corresponding path program 1 times [2020-12-22 06:00:04,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:04,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380738158] [2020-12-22 06:00:04,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:05,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380738158] [2020-12-22 06:00:05,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:05,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:00:05,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140707744] [2020-12-22 06:00:05,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:00:05,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:05,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:00:05,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:00:05,089 INFO L87 Difference]: Start difference. First operand 3431 states and 6444 transitions. Second operand 7 states. [2020-12-22 06:00:06,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:06,250 INFO L93 Difference]: Finished difference Result 16906 states and 31876 transitions. [2020-12-22 06:00:06,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:06,251 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-12-22 06:00:06,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:06,289 INFO L225 Difference]: With dead ends: 16906 [2020-12-22 06:00:06,289 INFO L226 Difference]: Without dead ends: 13503 [2020-12-22 06:00:06,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:00:06,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13503 states. [2020-12-22 06:00:06,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13503 to 3433. [2020-12-22 06:00:06,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3433 states. [2020-12-22 06:00:06,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3433 states to 3433 states and 6445 transitions. [2020-12-22 06:00:06,537 INFO L78 Accepts]: Start accepts. Automaton has 3433 states and 6445 transitions. Word has length 68 [2020-12-22 06:00:06,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:06,538 INFO L481 AbstractCegarLoop]: Abstraction has 3433 states and 6445 transitions. [2020-12-22 06:00:06,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:00:06,538 INFO L276 IsEmpty]: Start isEmpty. Operand 3433 states and 6445 transitions. [2020-12-22 06:00:06,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 06:00:06,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:06,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:06,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:00:06,542 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:06,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:06,543 INFO L82 PathProgramCache]: Analyzing trace with hash 11608961, now seen corresponding path program 1 times [2020-12-22 06:00:06,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:06,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100850268] [2020-12-22 06:00:06,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:06,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:06,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100850268] [2020-12-22 06:00:06,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:06,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:00:06,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650868013] [2020-12-22 06:00:06,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:00:06,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:06,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:00:06,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:00:06,634 INFO L87 Difference]: Start difference. First operand 3433 states and 6445 transitions. Second operand 7 states. [2020-12-22 06:00:07,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:07,621 INFO L93 Difference]: Finished difference Result 16898 states and 31855 transitions. [2020-12-22 06:00:07,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:07,621 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-12-22 06:00:07,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:07,681 INFO L225 Difference]: With dead ends: 16898 [2020-12-22 06:00:07,681 INFO L226 Difference]: Without dead ends: 13498 [2020-12-22 06:00:07,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:00:07,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13498 states. [2020-12-22 06:00:07,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13498 to 3438. [2020-12-22 06:00:07,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3438 states. [2020-12-22 06:00:07,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3438 states to 3438 states and 6453 transitions. [2020-12-22 06:00:07,999 INFO L78 Accepts]: Start accepts. Automaton has 3438 states and 6453 transitions. Word has length 70 [2020-12-22 06:00:08,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:08,000 INFO L481 AbstractCegarLoop]: Abstraction has 3438 states and 6453 transitions. [2020-12-22 06:00:08,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:00:08,000 INFO L276 IsEmpty]: Start isEmpty. Operand 3438 states and 6453 transitions. [2020-12-22 06:00:08,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 06:00:08,004 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:08,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:08,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:00:08,005 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:08,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:08,005 INFO L82 PathProgramCache]: Analyzing trace with hash 966464028, now seen corresponding path program 1 times [2020-12-22 06:00:08,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:08,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950599044] [2020-12-22 06:00:08,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:08,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:08,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950599044] [2020-12-22 06:00:08,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:08,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:00:08,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306494190] [2020-12-22 06:00:08,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:08,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:08,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:08,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:08,068 INFO L87 Difference]: Start difference. First operand 3438 states and 6453 transitions. Second operand 3 states. [2020-12-22 06:00:08,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:08,316 INFO L93 Difference]: Finished difference Result 6818 states and 12824 transitions. [2020-12-22 06:00:08,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:08,317 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-22 06:00:08,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:08,327 INFO L225 Difference]: With dead ends: 6818 [2020-12-22 06:00:08,328 INFO L226 Difference]: Without dead ends: 3417 [2020-12-22 06:00:08,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:08,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3417 states. [2020-12-22 06:00:08,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3417 to 3417. [2020-12-22 06:00:08,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3417 states. [2020-12-22 06:00:08,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3417 states to 3417 states and 6417 transitions. [2020-12-22 06:00:08,531 INFO L78 Accepts]: Start accepts. Automaton has 3417 states and 6417 transitions. Word has length 72 [2020-12-22 06:00:08,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:08,532 INFO L481 AbstractCegarLoop]: Abstraction has 3417 states and 6417 transitions. [2020-12-22 06:00:08,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:08,532 INFO L276 IsEmpty]: Start isEmpty. Operand 3417 states and 6417 transitions. [2020-12-22 06:00:08,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 06:00:08,535 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:08,536 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] [2020-12-22 06:00:08,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:00:08,540 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:08,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:08,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1553956183, now seen corresponding path program 1 times [2020-12-22 06:00:08,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:08,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871936691] [2020-12-22 06:00:08,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:08,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:08,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871936691] [2020-12-22 06:00:08,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:08,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:08,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905374673] [2020-12-22 06:00:08,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:08,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:08,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:08,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:08,640 INFO L87 Difference]: Start difference. First operand 3417 states and 6417 transitions. Second operand 5 states. [2020-12-22 06:00:08,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:08,945 INFO L93 Difference]: Finished difference Result 6767 states and 12746 transitions. [2020-12-22 06:00:08,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:08,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-12-22 06:00:08,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:08,957 INFO L225 Difference]: With dead ends: 6767 [2020-12-22 06:00:08,957 INFO L226 Difference]: Without dead ends: 3411 [2020-12-22 06:00:08,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:00:08,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3411 states. [2020-12-22 06:00:09,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3411 to 3411. [2020-12-22 06:00:09,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3411 states. [2020-12-22 06:00:09,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3411 states to 3411 states and 6408 transitions. [2020-12-22 06:00:09,253 INFO L78 Accepts]: Start accepts. Automaton has 3411 states and 6408 transitions. Word has length 74 [2020-12-22 06:00:09,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:09,253 INFO L481 AbstractCegarLoop]: Abstraction has 3411 states and 6408 transitions. [2020-12-22 06:00:09,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:09,254 INFO L276 IsEmpty]: Start isEmpty. Operand 3411 states and 6408 transitions. [2020-12-22 06:00:09,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 06:00:09,259 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:09,260 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] [2020-12-22 06:00:09,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:00:09,260 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:09,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:09,261 INFO L82 PathProgramCache]: Analyzing trace with hash -2056564521, now seen corresponding path program 1 times [2020-12-22 06:00:09,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:09,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952820381] [2020-12-22 06:00:09,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:09,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:09,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952820381] [2020-12-22 06:00:09,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:09,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:09,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816061836] [2020-12-22 06:00:09,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:09,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:09,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:09,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:09,360 INFO L87 Difference]: Start difference. First operand 3411 states and 6408 transitions. Second operand 4 states. [2020-12-22 06:00:09,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:09,606 INFO L93 Difference]: Finished difference Result 6761 states and 12737 transitions. [2020-12-22 06:00:09,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:00:09,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-12-22 06:00:09,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:09,618 INFO L225 Difference]: With dead ends: 6761 [2020-12-22 06:00:09,618 INFO L226 Difference]: Without dead ends: 3397 [2020-12-22 06:00:09,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:09,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2020-12-22 06:00:09,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 3397. [2020-12-22 06:00:09,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3397 states. [2020-12-22 06:00:09,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3397 states to 3397 states and 6387 transitions. [2020-12-22 06:00:09,891 INFO L78 Accepts]: Start accepts. Automaton has 3397 states and 6387 transitions. Word has length 74 [2020-12-22 06:00:09,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:09,893 INFO L481 AbstractCegarLoop]: Abstraction has 3397 states and 6387 transitions. [2020-12-22 06:00:09,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:09,894 INFO L276 IsEmpty]: Start isEmpty. Operand 3397 states and 6387 transitions. [2020-12-22 06:00:09,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 06:00:09,897 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:09,898 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] [2020-12-22 06:00:09,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:00:09,898 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:09,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:09,898 INFO L82 PathProgramCache]: Analyzing trace with hash -56926326, now seen corresponding path program 1 times [2020-12-22 06:00:09,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:09,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691943757] [2020-12-22 06:00:09,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:10,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:10,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691943757] [2020-12-22 06:00:10,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:10,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:00:10,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587717549] [2020-12-22 06:00:10,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:10,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:10,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:10,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:10,018 INFO L87 Difference]: Start difference. First operand 3397 states and 6387 transitions. Second operand 6 states. [2020-12-22 06:00:10,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:10,359 INFO L93 Difference]: Finished difference Result 6761 states and 12732 transitions. [2020-12-22 06:00:10,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:10,360 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-12-22 06:00:10,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:10,369 INFO L225 Difference]: With dead ends: 6761 [2020-12-22 06:00:10,369 INFO L226 Difference]: Without dead ends: 3417 [2020-12-22 06:00:10,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:00:10,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3417 states. [2020-12-22 06:00:10,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3417 to 3397. [2020-12-22 06:00:10,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3397 states. [2020-12-22 06:00:10,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3397 states to 3397 states and 6386 transitions. [2020-12-22 06:00:10,575 INFO L78 Accepts]: Start accepts. Automaton has 3397 states and 6386 transitions. Word has length 75 [2020-12-22 06:00:10,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:10,575 INFO L481 AbstractCegarLoop]: Abstraction has 3397 states and 6386 transitions. [2020-12-22 06:00:10,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:10,575 INFO L276 IsEmpty]: Start isEmpty. Operand 3397 states and 6386 transitions. [2020-12-22 06:00:10,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 06:00:10,579 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:10,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:10,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:00:10,579 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:10,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:10,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1358899134, now seen corresponding path program 1 times [2020-12-22 06:00:10,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:10,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660459393] [2020-12-22 06:00:10,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:10,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660459393] [2020-12-22 06:00:10,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:10,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:00:10,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762398545] [2020-12-22 06:00:10,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:10,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:10,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:10,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:10,676 INFO L87 Difference]: Start difference. First operand 3397 states and 6386 transitions. Second operand 6 states. [2020-12-22 06:00:11,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:11,009 INFO L93 Difference]: Finished difference Result 6751 states and 12713 transitions. [2020-12-22 06:00:11,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:11,010 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-12-22 06:00:11,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:11,017 INFO L225 Difference]: With dead ends: 6751 [2020-12-22 06:00:11,017 INFO L226 Difference]: Without dead ends: 3412 [2020-12-22 06:00:11,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:00:11,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3412 states. [2020-12-22 06:00:11,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3412 to 3397. [2020-12-22 06:00:11,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3397 states. [2020-12-22 06:00:11,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3397 states to 3397 states and 6385 transitions. [2020-12-22 06:00:11,228 INFO L78 Accepts]: Start accepts. Automaton has 3397 states and 6385 transitions. Word has length 76 [2020-12-22 06:00:11,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:11,228 INFO L481 AbstractCegarLoop]: Abstraction has 3397 states and 6385 transitions. [2020-12-22 06:00:11,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:11,229 INFO L276 IsEmpty]: Start isEmpty. Operand 3397 states and 6385 transitions. [2020-12-22 06:00:11,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 06:00:11,232 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:11,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:11,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:00:11,233 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:11,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:11,233 INFO L82 PathProgramCache]: Analyzing trace with hash -377376449, now seen corresponding path program 1 times [2020-12-22 06:00:11,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:11,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180149643] [2020-12-22 06:00:11,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:11,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:11,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180149643] [2020-12-22 06:00:11,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:11,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:00:11,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953955390] [2020-12-22 06:00:11,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:11,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:11,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:11,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:11,324 INFO L87 Difference]: Start difference. First operand 3397 states and 6385 transitions. Second operand 3 states. [2020-12-22 06:00:11,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:11,868 INFO L93 Difference]: Finished difference Result 8156 states and 15366 transitions. [2020-12-22 06:00:11,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:11,868 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 06:00:11,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:11,879 INFO L225 Difference]: With dead ends: 8156 [2020-12-22 06:00:11,880 INFO L226 Difference]: Without dead ends: 5648 [2020-12-22 06:00:11,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:11,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5648 states. [2020-12-22 06:00:12,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5648 to 5633. [2020-12-22 06:00:12,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5633 states. [2020-12-22 06:00:12,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5633 states to 5633 states and 10593 transitions. [2020-12-22 06:00:12,299 INFO L78 Accepts]: Start accepts. Automaton has 5633 states and 10593 transitions. Word has length 77 [2020-12-22 06:00:12,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:12,300 INFO L481 AbstractCegarLoop]: Abstraction has 5633 states and 10593 transitions. [2020-12-22 06:00:12,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:12,300 INFO L276 IsEmpty]: Start isEmpty. Operand 5633 states and 10593 transitions. [2020-12-22 06:00:12,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 06:00:12,303 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:12,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:12,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:00:12,304 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:12,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:12,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1863295700, now seen corresponding path program 1 times [2020-12-22 06:00:12,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:12,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763275682] [2020-12-22 06:00:12,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:12,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:12,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763275682] [2020-12-22 06:00:12,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:12,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:00:12,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015693365] [2020-12-22 06:00:12,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:12,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:12,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:12,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:12,390 INFO L87 Difference]: Start difference. First operand 5633 states and 10593 transitions. Second operand 3 states. [2020-12-22 06:00:13,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:13,025 INFO L93 Difference]: Finished difference Result 14176 states and 26695 transitions. [2020-12-22 06:00:13,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:13,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-22 06:00:13,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:13,047 INFO L225 Difference]: With dead ends: 14176 [2020-12-22 06:00:13,047 INFO L226 Difference]: Without dead ends: 10022 [2020-12-22 06:00:13,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:13,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10022 states. [2020-12-22 06:00:13,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10022 to 10007. [2020-12-22 06:00:13,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10007 states. [2020-12-22 06:00:13,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10007 states to 10007 states and 18823 transitions. [2020-12-22 06:00:13,753 INFO L78 Accepts]: Start accepts. Automaton has 10007 states and 18823 transitions. Word has length 78 [2020-12-22 06:00:13,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:13,754 INFO L481 AbstractCegarLoop]: Abstraction has 10007 states and 18823 transitions. [2020-12-22 06:00:13,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:13,754 INFO L276 IsEmpty]: Start isEmpty. Operand 10007 states and 18823 transitions. [2020-12-22 06:00:13,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 06:00:13,758 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:13,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:13,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:00:13,758 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:13,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:13,759 INFO L82 PathProgramCache]: Analyzing trace with hash 238543396, now seen corresponding path program 1 times [2020-12-22 06:00:13,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:13,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079876521] [2020-12-22 06:00:13,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:13,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:13,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079876521] [2020-12-22 06:00:13,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:13,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:00:13,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149326855] [2020-12-22 06:00:13,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:13,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:13,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:13,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:13,826 INFO L87 Difference]: Start difference. First operand 10007 states and 18823 transitions. Second operand 3 states. [2020-12-22 06:00:14,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:14,758 INFO L93 Difference]: Finished difference Result 26020 states and 48968 transitions. [2020-12-22 06:00:14,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:14,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 06:00:14,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:14,796 INFO L225 Difference]: With dead ends: 26020 [2020-12-22 06:00:14,797 INFO L226 Difference]: Without dead ends: 18564 [2020-12-22 06:00:14,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:14,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18564 states. [2020-12-22 06:00:15,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18564 to 18549. [2020-12-22 06:00:15,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18549 states. [2020-12-22 06:00:15,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18549 states to 18549 states and 34878 transitions. [2020-12-22 06:00:15,956 INFO L78 Accepts]: Start accepts. Automaton has 18549 states and 34878 transitions. Word has length 79 [2020-12-22 06:00:15,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:15,957 INFO L481 AbstractCegarLoop]: Abstraction has 18549 states and 34878 transitions. [2020-12-22 06:00:15,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:15,957 INFO L276 IsEmpty]: Start isEmpty. Operand 18549 states and 34878 transitions. [2020-12-22 06:00:15,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 06:00:15,960 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:15,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:15,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:00:15,961 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:15,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:15,961 INFO L82 PathProgramCache]: Analyzing trace with hash -955282663, now seen corresponding path program 1 times [2020-12-22 06:00:15,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:15,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964161306] [2020-12-22 06:00:15,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:16,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:16,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964161306] [2020-12-22 06:00:16,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:16,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:00:16,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940068981] [2020-12-22 06:00:16,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:16,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:16,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:16,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:16,027 INFO L87 Difference]: Start difference. First operand 18549 states and 34878 transitions. Second operand 3 states. [2020-12-22 06:00:17,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:17,641 INFO L93 Difference]: Finished difference Result 49296 states and 92679 transitions. [2020-12-22 06:00:17,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:17,642 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 06:00:17,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:17,694 INFO L225 Difference]: With dead ends: 49296 [2020-12-22 06:00:17,694 INFO L226 Difference]: Without dead ends: 35226 [2020-12-22 06:00:17,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:17,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35226 states. [2020-12-22 06:00:20,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35226 to 35211. [2020-12-22 06:00:20,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35211 states. [2020-12-22 06:00:20,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35211 states to 35211 states and 66145 transitions. [2020-12-22 06:00:20,423 INFO L78 Accepts]: Start accepts. Automaton has 35211 states and 66145 transitions. Word has length 80 [2020-12-22 06:00:20,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:20,424 INFO L481 AbstractCegarLoop]: Abstraction has 35211 states and 66145 transitions. [2020-12-22 06:00:20,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:20,424 INFO L276 IsEmpty]: Start isEmpty. Operand 35211 states and 66145 transitions. [2020-12-22 06:00:20,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 06:00:20,427 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:20,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:20,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:00:20,428 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:20,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:20,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1675297015, now seen corresponding path program 1 times [2020-12-22 06:00:20,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:20,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616873530] [2020-12-22 06:00:20,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:20,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:20,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616873530] [2020-12-22 06:00:20,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:20,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:00:20,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873398191] [2020-12-22 06:00:20,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:20,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:20,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:20,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:20,500 INFO L87 Difference]: Start difference. First operand 35211 states and 66145 transitions. Second operand 3 states. [2020-12-22 06:00:23,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:23,413 INFO L93 Difference]: Finished difference Result 95004 states and 178366 transitions. [2020-12-22 06:00:23,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:23,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 06:00:23,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:23,529 INFO L225 Difference]: With dead ends: 95004 [2020-12-22 06:00:23,529 INFO L226 Difference]: Without dead ends: 67696 [2020-12-22 06:00:23,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:23,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67696 states. [2020-12-22 06:00:26,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67696 to 67681. [2020-12-22 06:00:26,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67681 states. [2020-12-22 06:00:27,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67681 states to 67681 states and 126960 transitions. [2020-12-22 06:00:27,038 INFO L78 Accepts]: Start accepts. Automaton has 67681 states and 126960 transitions. Word has length 81 [2020-12-22 06:00:27,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:27,038 INFO L481 AbstractCegarLoop]: Abstraction has 67681 states and 126960 transitions. [2020-12-22 06:00:27,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:27,038 INFO L276 IsEmpty]: Start isEmpty. Operand 67681 states and 126960 transitions. [2020-12-22 06:00:27,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 06:00:27,042 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:27,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:27,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:00:27,043 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:27,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:27,043 INFO L82 PathProgramCache]: Analyzing trace with hash 814231947, now seen corresponding path program 1 times [2020-12-22 06:00:27,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:27,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970448172] [2020-12-22 06:00:27,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:27,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:27,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970448172] [2020-12-22 06:00:27,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:27,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:27,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120480231] [2020-12-22 06:00:27,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:27,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:27,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:27,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:27,123 INFO L87 Difference]: Start difference. First operand 67681 states and 126960 transitions. Second operand 5 states. [2020-12-22 06:00:35,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:35,220 INFO L93 Difference]: Finished difference Result 281667 states and 528692 transitions. [2020-12-22 06:00:35,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:00:35,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-12-22 06:00:35,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:35,837 INFO L225 Difference]: With dead ends: 281667 [2020-12-22 06:00:35,837 INFO L226 Difference]: Without dead ends: 228065 [2020-12-22 06:00:35,905 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 06:00:36,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228065 states. [2020-12-22 06:00:41,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228065 to 114254. [2020-12-22 06:00:41,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114254 states. [2020-12-22 06:00:42,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114254 states to 114254 states and 213965 transitions. [2020-12-22 06:00:42,179 INFO L78 Accepts]: Start accepts. Automaton has 114254 states and 213965 transitions. Word has length 81 [2020-12-22 06:00:42,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:42,179 INFO L481 AbstractCegarLoop]: Abstraction has 114254 states and 213965 transitions. [2020-12-22 06:00:42,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:42,179 INFO L276 IsEmpty]: Start isEmpty. Operand 114254 states and 213965 transitions. [2020-12-22 06:00:42,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 06:00:42,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:42,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:42,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:00:42,183 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:42,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:42,183 INFO L82 PathProgramCache]: Analyzing trace with hash 925261599, now seen corresponding path program 1 times [2020-12-22 06:00:42,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:42,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173247279] [2020-12-22 06:00:42,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:42,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:42,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173247279] [2020-12-22 06:00:42,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:42,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:42,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572262175] [2020-12-22 06:00:42,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:42,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:42,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:42,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:42,268 INFO L87 Difference]: Start difference. First operand 114254 states and 213965 transitions. Second operand 5 states. [2020-12-22 06:00:50,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:50,693 INFO L93 Difference]: Finished difference Result 277994 states and 518957 transitions. [2020-12-22 06:00:50,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:00:50,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-12-22 06:00:50,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:51,023 INFO L225 Difference]: With dead ends: 277994 [2020-12-22 06:00:51,023 INFO L226 Difference]: Without dead ends: 178224 [2020-12-22 06:00:51,327 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 06:00:51,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178224 states. [2020-12-22 06:00:56,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178224 to 114579. [2020-12-22 06:00:56,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114579 states. [2020-12-22 06:00:57,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114579 states to 114579 states and 214290 transitions. [2020-12-22 06:00:57,150 INFO L78 Accepts]: Start accepts. Automaton has 114579 states and 214290 transitions. Word has length 83 [2020-12-22 06:00:57,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:57,150 INFO L481 AbstractCegarLoop]: Abstraction has 114579 states and 214290 transitions. [2020-12-22 06:00:57,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:57,150 INFO L276 IsEmpty]: Start isEmpty. Operand 114579 states and 214290 transitions. [2020-12-22 06:00:57,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 06:00:57,154 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:57,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:57,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:00:57,155 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:57,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:57,155 INFO L82 PathProgramCache]: Analyzing trace with hash 705199460, now seen corresponding path program 1 times [2020-12-22 06:00:57,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:57,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18435498] [2020-12-22 06:00:57,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:57,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:57,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18435498] [2020-12-22 06:00:57,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:57,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:00:57,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914408218] [2020-12-22 06:00:57,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:57,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:57,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:57,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:57,235 INFO L87 Difference]: Start difference. First operand 114579 states and 214290 transitions. Second operand 3 states. [2020-12-22 06:01:05,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:05,392 INFO L93 Difference]: Finished difference Result 260472 states and 486228 transitions. [2020-12-22 06:01:05,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:01:05,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-12-22 06:01:05,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:05,686 INFO L225 Difference]: With dead ends: 260472 [2020-12-22 06:01:05,686 INFO L226 Difference]: Without dead ends: 159795 [2020-12-22 06:01:05,762 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 06:01:05,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159795 states. [2020-12-22 06:01:13,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159795 to 159332. [2020-12-22 06:01:13,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159332 states. [2020-12-22 06:01:13,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159332 states to 159332 states and 294396 transitions. [2020-12-22 06:01:13,606 INFO L78 Accepts]: Start accepts. Automaton has 159332 states and 294396 transitions. Word has length 88 [2020-12-22 06:01:13,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:13,607 INFO L481 AbstractCegarLoop]: Abstraction has 159332 states and 294396 transitions. [2020-12-22 06:01:13,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:01:13,607 INFO L276 IsEmpty]: Start isEmpty. Operand 159332 states and 294396 transitions. [2020-12-22 06:01:13,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 06:01:13,611 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:13,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:13,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:01:13,612 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 06:01:13,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:13,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1532114777, now seen corresponding path program 1 times [2020-12-22 06:01:13,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:13,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062127586] [2020-12-22 06:01:13,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:14,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:14,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062127586] [2020-12-22 06:01:14,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:14,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:01:14,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109733812] [2020-12-22 06:01:14,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:01:14,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:14,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:01:14,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:14,059 INFO L87 Difference]: Start difference. First operand 159332 states and 294396 transitions. Second operand 5 states. [2020-12-22 06:01:28,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:28,289 INFO L93 Difference]: Finished difference Result 431867 states and 796497 transitions. [2020-12-22 06:01:28,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:28,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-12-22 06:01:28,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:29,107 INFO L225 Difference]: With dead ends: 431867 [2020-12-22 06:01:29,108 INFO L226 Difference]: Without dead ends: 286484 [2020-12-22 06:01:29,228 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 06:01:29,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286484 states. [2020-12-22 06:01:38,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286484 to 159332. [2020-12-22 06:01:38,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159332 states. [2020-12-22 06:01:38,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159332 states to 159332 states and 290442 transitions. [2020-12-22 06:01:38,816 INFO L78 Accepts]: Start accepts. Automaton has 159332 states and 290442 transitions. Word has length 90 [2020-12-22 06:01:38,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:38,817 INFO L481 AbstractCegarLoop]: Abstraction has 159332 states and 290442 transitions. [2020-12-22 06:01:38,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:38,817 INFO L276 IsEmpty]: Start isEmpty. Operand 159332 states and 290442 transitions. [2020-12-22 06:01:38,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 06:01:38,820 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:38,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:38,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:01:38,821 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:38,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:38,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1674519516, now seen corresponding path program 1 times [2020-12-22 06:01:38,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:38,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74379153] [2020-12-22 06:01:38,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:38,957 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 06:01:38,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74379153] [2020-12-22 06:01:38,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:38,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:01:38,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470067356] [2020-12-22 06:01:38,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:01:38,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:38,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:01:38,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:38,959 INFO L87 Difference]: Start difference. First operand 159332 states and 290442 transitions. Second operand 5 states. [2020-12-22 06:01:46,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:46,777 INFO L93 Difference]: Finished difference Result 265615 states and 484215 transitions. [2020-12-22 06:01:46,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:46,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-12-22 06:01:46,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:47,301 INFO L225 Difference]: With dead ends: 265615 [2020-12-22 06:01:47,301 INFO L226 Difference]: Without dead ends: 159475 [2020-12-22 06:01:47,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:01:47,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159475 states. [2020-12-22 06:01:56,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159475 to 159332. [2020-12-22 06:01:56,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159332 states. [2020-12-22 06:01:57,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159332 states to 159332 states and 290247 transitions. [2020-12-22 06:01:57,166 INFO L78 Accepts]: Start accepts. Automaton has 159332 states and 290247 transitions. Word has length 91 [2020-12-22 06:01:57,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:57,166 INFO L481 AbstractCegarLoop]: Abstraction has 159332 states and 290247 transitions. [2020-12-22 06:01:57,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:57,167 INFO L276 IsEmpty]: Start isEmpty. Operand 159332 states and 290247 transitions. [2020-12-22 06:01:57,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 06:01:57,185 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:57,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:57,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:01:57,185 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:57,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:57,185 INFO L82 PathProgramCache]: Analyzing trace with hash 2033641766, now seen corresponding path program 1 times [2020-12-22 06:01:57,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:57,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813219560] [2020-12-22 06:01:57,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:57,378 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 06:01:57,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813219560] [2020-12-22 06:01:57,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:57,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:01:57,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899693117] [2020-12-22 06:01:57,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:01:57,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:57,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:01:57,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:57,381 INFO L87 Difference]: Start difference. First operand 159332 states and 290247 transitions. Second operand 3 states. [2020-12-22 06:02:06,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:06,335 INFO L93 Difference]: Finished difference Result 304725 states and 554232 transitions. [2020-12-22 06:02:06,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:02:06,335 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 06:02:06,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:06,654 INFO L225 Difference]: With dead ends: 304725 [2020-12-22 06:02:06,654 INFO L226 Difference]: Without dead ends: 159070 [2020-12-22 06:02:06,754 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 06:02:06,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159070 states. [2020-12-22 06:02:14,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159070 to 159070. [2020-12-22 06:02:14,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159070 states. [2020-12-22 06:02:15,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159070 states to 159070 states and 289725 transitions. [2020-12-22 06:02:15,507 INFO L78 Accepts]: Start accepts. Automaton has 159070 states and 289725 transitions. Word has length 91 [2020-12-22 06:02:15,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:15,508 INFO L481 AbstractCegarLoop]: Abstraction has 159070 states and 289725 transitions. [2020-12-22 06:02:15,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:02:15,508 INFO L276 IsEmpty]: Start isEmpty. Operand 159070 states and 289725 transitions. [2020-12-22 06:02:15,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 06:02:15,511 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:15,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:15,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 06:02:15,511 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 06:02:15,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:15,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1161321190, now seen corresponding path program 1 times [2020-12-22 06:02:15,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:15,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836539917] [2020-12-22 06:02:15,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:15,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:15,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836539917] [2020-12-22 06:02:15,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:15,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:15,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208603549] [2020-12-22 06:02:15,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:15,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:15,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:15,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:15,627 INFO L87 Difference]: Start difference. First operand 159070 states and 289725 transitions. Second operand 5 states. [2020-12-22 06:02:51,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:51,647 INFO L93 Difference]: Finished difference Result 802889 states and 1444125 transitions. [2020-12-22 06:02:51,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:02:51,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-12-22 06:02:51,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:53,584 INFO L225 Difference]: With dead ends: 802889 [2020-12-22 06:02:53,585 INFO L226 Difference]: Without dead ends: 696900 [2020-12-22 06:02:53,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:02:55,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696900 states. [2020-12-22 06:03:12,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696900 to 225391. [2020-12-22 06:03:12,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225391 states. [2020-12-22 06:03:12,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225391 states to 225391 states and 403190 transitions. [2020-12-22 06:03:12,900 INFO L78 Accepts]: Start accepts. Automaton has 225391 states and 403190 transitions. Word has length 93 [2020-12-22 06:03:12,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:12,901 INFO L481 AbstractCegarLoop]: Abstraction has 225391 states and 403190 transitions. [2020-12-22 06:03:12,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:12,901 INFO L276 IsEmpty]: Start isEmpty. Operand 225391 states and 403190 transitions. [2020-12-22 06:03:12,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 06:03:12,906 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:12,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:12,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 06:03:12,906 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 06:03:12,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:12,907 INFO L82 PathProgramCache]: Analyzing trace with hash 846013540, now seen corresponding path program 1 times [2020-12-22 06:03:12,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:12,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183853266] [2020-12-22 06:03:12,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:13,036 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 06:03:13,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183853266] [2020-12-22 06:03:13,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:13,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:13,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469314004] [2020-12-22 06:03:13,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:13,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:13,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:13,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:13,038 INFO L87 Difference]: Start difference. First operand 225391 states and 403190 transitions. Second operand 5 states.