/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_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:59:52,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:59:52,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:59:52,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:59:52,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:59:52,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:59:52,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:59:52,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:59:52,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:59:52,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:59:52,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:59:52,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:59:52,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:59:52,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:59:52,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:59:52,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:59:52,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:59:52,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:59:52,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:59:52,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:59:52,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:59:52,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:59:52,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:59:52,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:59:52,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:59:52,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:59:52,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:59:52,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:59:52,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:59:52,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:59:52,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:59:52,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:59:52,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:59:52,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:59:52,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:59:52,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:59:52,977 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:59:53,031 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:59:53,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:59:53,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:59:53,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:59:53,037 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:59:53,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:59:53,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:59:53,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:59:53,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:59:53,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:59:53,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:59:53,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:59:53,040 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:59:53,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:59:53,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:59:53,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:59:53,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:59:53,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:59:53,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:59:53,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:59:53,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:59:53,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:59:53,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:59:53,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:59:53,043 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:59:53,043 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:59:53,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:59:53,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:59:53,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:59:53,526 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:59:53,527 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:59:53,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c [2020-12-22 05:59:53,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fdd276c1/2a1a61789cb74aeb8eab30f6b4ff58da/FLAG0a720d960 [2020-12-22 05:59:54,428 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:59:54,429 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c [2020-12-22 05:59:54,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fdd276c1/2a1a61789cb74aeb8eab30f6b4ff58da/FLAG0a720d960 [2020-12-22 05:59:54,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fdd276c1/2a1a61789cb74aeb8eab30f6b4ff58da [2020-12-22 05:59:54,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:59:54,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:59:54,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:59:54,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:59:54,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:59:54,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:59:54" (1/1) ... [2020-12-22 05:59:54,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b6b772a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:54, skipping insertion in model container [2020-12-22 05:59:54,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:59:54" (1/1) ... [2020-12-22 05:59:54,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:59:54,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:59:54,949 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_product24.cil.c[10908,10921] [2020-12-22 05:59:55,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:59:55,494 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:59:55,546 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_product24.cil.c[10908,10921] [2020-12-22 05:59:55,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:59:55,702 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:59:55,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:55 WrapperNode [2020-12-22 05:59:55,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:59:55,706 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:59:55,707 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:59:55,707 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:59:55,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:55" (1/1) ... [2020-12-22 05:59:55,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:55" (1/1) ... [2020-12-22 05:59:56,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:59:56,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:59:56,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:59:56,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:59:56,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:55" (1/1) ... [2020-12-22 05:59:56,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:55" (1/1) ... [2020-12-22 05:59:56,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:55" (1/1) ... [2020-12-22 05:59:56,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:55" (1/1) ... [2020-12-22 05:59:56,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:55" (1/1) ... [2020-12-22 05:59:57,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:55" (1/1) ... [2020-12-22 05:59:57,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:55" (1/1) ... [2020-12-22 05:59:57,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:59:57,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:59:57,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:59:57,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:59:57,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:55" (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 05:59:57,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:59:57,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:59:57,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:59:57,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:00:09,328 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:00:09,328 INFO L299 CfgBuilder]: Removed 1577 assume(true) statements. [2020-12-22 06:00:09,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:00:09 BoogieIcfgContainer [2020-12-22 06:00:09,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:00:09,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:00:09,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:00:09,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:00:09,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:59:54" (1/3) ... [2020-12-22 06:00:09,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2641a1fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:00:09, skipping insertion in model container [2020-12-22 06:00:09,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:55" (2/3) ... [2020-12-22 06:00:09,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2641a1fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:00:09, skipping insertion in model container [2020-12-22 06:00:09,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:00:09" (3/3) ... [2020-12-22 06:00:09,349 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product24.cil.c [2020-12-22 06:00:09,355 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:00:09,365 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 06:00:09,385 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 06:00:09,436 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:00:09,436 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:00:09,436 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:00:09,436 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:00:09,437 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:00:09,437 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:00:09,437 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:00:09,437 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:00:09,556 INFO L276 IsEmpty]: Start isEmpty. Operand 6911 states. [2020-12-22 06:00:09,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 06:00:09,572 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:09,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:09,574 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:09,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:09,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1969331306, now seen corresponding path program 1 times [2020-12-22 06:00:09,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:09,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146156751] [2020-12-22 06:00:09,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:10,036 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 06:00:10,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146156751] [2020-12-22 06:00:10,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:10,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:00:10,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941999412] [2020-12-22 06:00:10,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:10,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:10,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:10,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:10,063 INFO L87 Difference]: Start difference. First operand 6911 states. Second operand 3 states. [2020-12-22 06:00:10,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:10,695 INFO L93 Difference]: Finished difference Result 20653 states and 38999 transitions. [2020-12-22 06:00:10,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:10,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-12-22 06:00:10,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:10,824 INFO L225 Difference]: With dead ends: 20653 [2020-12-22 06:00:10,824 INFO L226 Difference]: Without dead ends: 13747 [2020-12-22 06:00:10,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:11,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13747 states. [2020-12-22 06:00:11,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13747 to 6907. [2020-12-22 06:00:11,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6907 states. [2020-12-22 06:00:11,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6907 states to 6907 states and 13030 transitions. [2020-12-22 06:00:11,413 INFO L78 Accepts]: Start accepts. Automaton has 6907 states and 13030 transitions. Word has length 36 [2020-12-22 06:00:11,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:11,414 INFO L481 AbstractCegarLoop]: Abstraction has 6907 states and 13030 transitions. [2020-12-22 06:00:11,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:11,414 INFO L276 IsEmpty]: Start isEmpty. Operand 6907 states and 13030 transitions. [2020-12-22 06:00:11,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 06:00:11,427 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:11,427 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] [2020-12-22 06:00:11,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:00:11,429 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:11,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:11,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1635895096, now seen corresponding path program 1 times [2020-12-22 06:00:11,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:11,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490985436] [2020-12-22 06:00:11,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:11,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:11,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490985436] [2020-12-22 06:00:11,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:11,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:11,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111111812] [2020-12-22 06:00:11,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:11,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:11,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:11,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:11,607 INFO L87 Difference]: Start difference. First operand 6907 states and 13030 transitions. Second operand 4 states. [2020-12-22 06:00:12,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:12,438 INFO L93 Difference]: Finished difference Result 27382 states and 51675 transitions. [2020-12-22 06:00:12,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:12,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-12-22 06:00:12,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:12,552 INFO L225 Difference]: With dead ends: 27382 [2020-12-22 06:00:12,553 INFO L226 Difference]: Without dead ends: 20497 [2020-12-22 06:00:12,571 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 06:00:12,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20497 states. [2020-12-22 06:00:12,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20497 to 6883. [2020-12-22 06:00:12,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6883 states. [2020-12-22 06:00:12,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6883 states to 6883 states and 12977 transitions. [2020-12-22 06:00:12,908 INFO L78 Accepts]: Start accepts. Automaton has 6883 states and 12977 transitions. Word has length 43 [2020-12-22 06:00:12,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:12,908 INFO L481 AbstractCegarLoop]: Abstraction has 6883 states and 12977 transitions. [2020-12-22 06:00:12,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:12,909 INFO L276 IsEmpty]: Start isEmpty. Operand 6883 states and 12977 transitions. [2020-12-22 06:00:12,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 06:00:12,913 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:12,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:12,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:00:12,914 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:12,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:12,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1898211622, now seen corresponding path program 1 times [2020-12-22 06:00:12,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:12,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119269474] [2020-12-22 06:00:12,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:13,071 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 06:00:13,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119269474] [2020-12-22 06:00:13,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:13,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:13,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654668215] [2020-12-22 06:00:13,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:13,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:13,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:13,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:13,075 INFO L87 Difference]: Start difference. First operand 6883 states and 12977 transitions. Second operand 4 states. [2020-12-22 06:00:13,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:13,695 INFO L93 Difference]: Finished difference Result 20557 states and 38782 transitions. [2020-12-22 06:00:13,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:13,695 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-12-22 06:00:13,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:13,738 INFO L225 Difference]: With dead ends: 20557 [2020-12-22 06:00:13,739 INFO L226 Difference]: Without dead ends: 13696 [2020-12-22 06:00:13,754 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 06:00:13,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13696 states. [2020-12-22 06:00:14,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13696 to 6883. [2020-12-22 06:00:14,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6883 states. [2020-12-22 06:00:14,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6883 states to 6883 states and 12971 transitions. [2020-12-22 06:00:14,029 INFO L78 Accepts]: Start accepts. Automaton has 6883 states and 12971 transitions. Word has length 44 [2020-12-22 06:00:14,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:14,029 INFO L481 AbstractCegarLoop]: Abstraction has 6883 states and 12971 transitions. [2020-12-22 06:00:14,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:14,030 INFO L276 IsEmpty]: Start isEmpty. Operand 6883 states and 12971 transitions. [2020-12-22 06:00:14,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 06:00:14,031 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:14,031 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] [2020-12-22 06:00:14,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:00:14,031 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:14,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:14,032 INFO L82 PathProgramCache]: Analyzing trace with hash 513263147, now seen corresponding path program 1 times [2020-12-22 06:00:14,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:14,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641503850] [2020-12-22 06:00:14,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:14,100 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 06:00:14,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641503850] [2020-12-22 06:00:14,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:14,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:14,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988082844] [2020-12-22 06:00:14,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:14,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:14,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:14,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:14,103 INFO L87 Difference]: Start difference. First operand 6883 states and 12971 transitions. Second operand 4 states. [2020-12-22 06:00:14,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:14,891 INFO L93 Difference]: Finished difference Result 20557 states and 38770 transitions. [2020-12-22 06:00:14,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:14,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-12-22 06:00:14,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:14,934 INFO L225 Difference]: With dead ends: 20557 [2020-12-22 06:00:14,935 INFO L226 Difference]: Without dead ends: 13696 [2020-12-22 06:00:14,950 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 06:00:14,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13696 states. [2020-12-22 06:00:15,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13696 to 6883. [2020-12-22 06:00:15,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6883 states. [2020-12-22 06:00:15,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6883 states to 6883 states and 12965 transitions. [2020-12-22 06:00:15,245 INFO L78 Accepts]: Start accepts. Automaton has 6883 states and 12965 transitions. Word has length 46 [2020-12-22 06:00:15,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:15,246 INFO L481 AbstractCegarLoop]: Abstraction has 6883 states and 12965 transitions. [2020-12-22 06:00:15,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:15,246 INFO L276 IsEmpty]: Start isEmpty. Operand 6883 states and 12965 transitions. [2020-12-22 06:00:15,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 06:00:15,247 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:15,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:15,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:00:15,248 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 06:00:15,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:15,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1026892368, now seen corresponding path program 1 times [2020-12-22 06:00:15,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:15,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534073536] [2020-12-22 06:00:15,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:15,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:15,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534073536] [2020-12-22 06:00:15,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:15,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:15,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902253423] [2020-12-22 06:00:15,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:15,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:15,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:15,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:15,343 INFO L87 Difference]: Start difference. First operand 6883 states and 12965 transitions. Second operand 4 states. [2020-12-22 06:00:16,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:16,608 INFO L93 Difference]: Finished difference Result 34165 states and 64440 transitions. [2020-12-22 06:00:16,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:16,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-12-22 06:00:16,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:16,697 INFO L225 Difference]: With dead ends: 34165 [2020-12-22 06:00:16,697 INFO L226 Difference]: Without dead ends: 27304 [2020-12-22 06:00:16,719 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 06:00:16,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27304 states. [2020-12-22 06:00:17,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27304 to 6883. [2020-12-22 06:00:17,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6883 states. [2020-12-22 06:00:17,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6883 states to 6883 states and 12964 transitions. [2020-12-22 06:00:17,182 INFO L78 Accepts]: Start accepts. Automaton has 6883 states and 12964 transitions. Word has length 48 [2020-12-22 06:00:17,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:17,182 INFO L481 AbstractCegarLoop]: Abstraction has 6883 states and 12964 transitions. [2020-12-22 06:00:17,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:17,183 INFO L276 IsEmpty]: Start isEmpty. Operand 6883 states and 12964 transitions. [2020-12-22 06:00:17,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:00:17,184 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:17,185 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] [2020-12-22 06:00:17,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:00:17,185 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 06:00:17,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:17,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1263532523, now seen corresponding path program 1 times [2020-12-22 06:00:17,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:17,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532738277] [2020-12-22 06:00:17,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:17,255 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 06:00:17,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532738277] [2020-12-22 06:00:17,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:17,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:17,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650825639] [2020-12-22 06:00:17,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:17,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:17,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:17,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:17,259 INFO L87 Difference]: Start difference. First operand 6883 states and 12964 transitions. Second operand 4 states. [2020-12-22 06:00:18,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:18,018 INFO L93 Difference]: Finished difference Result 20557 states and 38757 transitions. [2020-12-22 06:00:18,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:18,019 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-12-22 06:00:18,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:18,063 INFO L225 Difference]: With dead ends: 20557 [2020-12-22 06:00:18,063 INFO L226 Difference]: Without dead ends: 13696 [2020-12-22 06:00:18,079 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 06:00:18,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13696 states. [2020-12-22 06:00:18,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13696 to 6883. [2020-12-22 06:00:18,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6883 states. [2020-12-22 06:00:18,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6883 states to 6883 states and 12958 transitions. [2020-12-22 06:00:18,415 INFO L78 Accepts]: Start accepts. Automaton has 6883 states and 12958 transitions. Word has length 49 [2020-12-22 06:00:18,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:18,416 INFO L481 AbstractCegarLoop]: Abstraction has 6883 states and 12958 transitions. [2020-12-22 06:00:18,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:18,416 INFO L276 IsEmpty]: Start isEmpty. Operand 6883 states and 12958 transitions. [2020-12-22 06:00:18,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 06:00:18,417 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:18,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:18,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:00:18,418 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 06:00:18,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:18,419 INFO L82 PathProgramCache]: Analyzing trace with hash -691159253, now seen corresponding path program 1 times [2020-12-22 06:00:18,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:18,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39572822] [2020-12-22 06:00:18,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:18,479 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 06:00:18,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39572822] [2020-12-22 06:00:18,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:18,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:18,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736999343] [2020-12-22 06:00:18,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:18,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:18,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:18,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:18,483 INFO L87 Difference]: Start difference. First operand 6883 states and 12958 transitions. Second operand 4 states. [2020-12-22 06:00:18,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:18,976 INFO L93 Difference]: Finished difference Result 20557 states and 38745 transitions. [2020-12-22 06:00:18,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:18,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-12-22 06:00:18,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:19,015 INFO L225 Difference]: With dead ends: 20557 [2020-12-22 06:00:19,015 INFO L226 Difference]: Without dead ends: 13696 [2020-12-22 06:00:19,028 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 06:00:19,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13696 states. [2020-12-22 06:00:19,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13696 to 6883. [2020-12-22 06:00:19,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6883 states. [2020-12-22 06:00:19,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6883 states to 6883 states and 12952 transitions. [2020-12-22 06:00:19,318 INFO L78 Accepts]: Start accepts. Automaton has 6883 states and 12952 transitions. Word has length 50 [2020-12-22 06:00:19,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:19,318 INFO L481 AbstractCegarLoop]: Abstraction has 6883 states and 12952 transitions. [2020-12-22 06:00:19,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:19,318 INFO L276 IsEmpty]: Start isEmpty. Operand 6883 states and 12952 transitions. [2020-12-22 06:00:19,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:00:19,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:19,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:19,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:00:19,320 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 06:00:19,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:19,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1100481530, now seen corresponding path program 1 times [2020-12-22 06:00:19,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:19,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786938642] [2020-12-22 06:00:19,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:19,405 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 06:00:19,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786938642] [2020-12-22 06:00:19,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:19,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:19,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051398921] [2020-12-22 06:00:19,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:19,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:19,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:19,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:19,409 INFO L87 Difference]: Start difference. First operand 6883 states and 12952 transitions. Second operand 4 states. [2020-12-22 06:00:20,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:20,168 INFO L93 Difference]: Finished difference Result 27340 states and 51541 transitions. [2020-12-22 06:00:20,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:20,169 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-12-22 06:00:20,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:20,224 INFO L225 Difference]: With dead ends: 27340 [2020-12-22 06:00:20,225 INFO L226 Difference]: Without dead ends: 20485 [2020-12-22 06:00:20,242 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 06:00:20,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20485 states. [2020-12-22 06:00:20,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20485 to 6885. [2020-12-22 06:00:20,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6885 states. [2020-12-22 06:00:20,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6885 states to 6885 states and 12953 transitions. [2020-12-22 06:00:20,611 INFO L78 Accepts]: Start accepts. Automaton has 6885 states and 12953 transitions. Word has length 51 [2020-12-22 06:00:20,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:20,611 INFO L481 AbstractCegarLoop]: Abstraction has 6885 states and 12953 transitions. [2020-12-22 06:00:20,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:20,612 INFO L276 IsEmpty]: Start isEmpty. Operand 6885 states and 12953 transitions. [2020-12-22 06:00:20,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 06:00:20,613 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:20,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:20,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:00:20,614 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 06:00:20,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:20,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1887010262, now seen corresponding path program 1 times [2020-12-22 06:00:20,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:20,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312706668] [2020-12-22 06:00:20,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:20,687 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 06:00:20,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312706668] [2020-12-22 06:00:20,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:20,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:20,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719012286] [2020-12-22 06:00:20,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:20,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:20,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:20,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:20,696 INFO L87 Difference]: Start difference. First operand 6885 states and 12953 transitions. Second operand 4 states. [2020-12-22 06:00:21,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:21,399 INFO L93 Difference]: Finished difference Result 27332 states and 51521 transitions. [2020-12-22 06:00:21,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:21,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 06:00:21,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:21,443 INFO L225 Difference]: With dead ends: 27332 [2020-12-22 06:00:21,443 INFO L226 Difference]: Without dead ends: 20480 [2020-12-22 06:00:21,461 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 06:00:21,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20480 states. [2020-12-22 06:00:21,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20480 to 6890. [2020-12-22 06:00:21,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6890 states. [2020-12-22 06:00:21,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6890 states to 6890 states and 12961 transitions. [2020-12-22 06:00:21,864 INFO L78 Accepts]: Start accepts. Automaton has 6890 states and 12961 transitions. Word has length 52 [2020-12-22 06:00:21,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:21,865 INFO L481 AbstractCegarLoop]: Abstraction has 6890 states and 12961 transitions. [2020-12-22 06:00:21,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:21,865 INFO L276 IsEmpty]: Start isEmpty. Operand 6890 states and 12961 transitions. [2020-12-22 06:00:21,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 06:00:21,867 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:21,867 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] [2020-12-22 06:00:21,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:00:21,867 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 06:00:21,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:21,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1613132209, now seen corresponding path program 1 times [2020-12-22 06:00:21,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:21,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115676412] [2020-12-22 06:00:21,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:21,920 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 06:00:21,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115676412] [2020-12-22 06:00:21,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:21,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:00:21,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294799945] [2020-12-22 06:00:21,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:21,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:21,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:21,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:21,923 INFO L87 Difference]: Start difference. First operand 6890 states and 12961 transitions. Second operand 3 states. [2020-12-22 06:00:22,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:22,301 INFO L93 Difference]: Finished difference Result 13737 states and 25864 transitions. [2020-12-22 06:00:22,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:22,301 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-22 06:00:22,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:22,316 INFO L225 Difference]: With dead ends: 13737 [2020-12-22 06:00:22,317 INFO L226 Difference]: Without dead ends: 6884 [2020-12-22 06:00:22,327 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 06:00:22,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6884 states. [2020-12-22 06:00:22,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6884 to 6884. [2020-12-22 06:00:22,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6884 states. [2020-12-22 06:00:22,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6884 states to 6884 states and 12949 transitions. [2020-12-22 06:00:22,645 INFO L78 Accepts]: Start accepts. Automaton has 6884 states and 12949 transitions. Word has length 53 [2020-12-22 06:00:22,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:22,645 INFO L481 AbstractCegarLoop]: Abstraction has 6884 states and 12949 transitions. [2020-12-22 06:00:22,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:22,645 INFO L276 IsEmpty]: Start isEmpty. Operand 6884 states and 12949 transitions. [2020-12-22 06:00:22,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:00:22,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:22,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:22,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:00:22,647 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 06:00:22,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:22,647 INFO L82 PathProgramCache]: Analyzing trace with hash -470207914, now seen corresponding path program 1 times [2020-12-22 06:00:22,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:22,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611058962] [2020-12-22 06:00:22,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:22,752 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 06:00:22,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611058962] [2020-12-22 06:00:22,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:22,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:22,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987343305] [2020-12-22 06:00:22,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:22,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:22,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:22,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:22,756 INFO L87 Difference]: Start difference. First operand 6884 states and 12949 transitions. Second operand 5 states. [2020-12-22 06:00:23,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:23,139 INFO L93 Difference]: Finished difference Result 13681 states and 25777 transitions. [2020-12-22 06:00:23,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:00:23,139 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-22 06:00:23,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:23,148 INFO L225 Difference]: With dead ends: 13681 [2020-12-22 06:00:23,149 INFO L226 Difference]: Without dead ends: 6871 [2020-12-22 06:00:23,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:00:23,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6871 states. [2020-12-22 06:00:23,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6871 to 6871. [2020-12-22 06:00:23,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6871 states. [2020-12-22 06:00:23,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6871 states to 6871 states and 12927 transitions. [2020-12-22 06:00:23,467 INFO L78 Accepts]: Start accepts. Automaton has 6871 states and 12927 transitions. Word has length 55 [2020-12-22 06:00:23,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:23,468 INFO L481 AbstractCegarLoop]: Abstraction has 6871 states and 12927 transitions. [2020-12-22 06:00:23,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:23,468 INFO L276 IsEmpty]: Start isEmpty. Operand 6871 states and 12927 transitions. [2020-12-22 06:00:23,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 06:00:23,469 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:23,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:23,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:00:23,469 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 06:00:23,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:23,470 INFO L82 PathProgramCache]: Analyzing trace with hash 2034437098, now seen corresponding path program 1 times [2020-12-22 06:00:23,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:23,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123238545] [2020-12-22 06:00:23,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:23,539 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 06:00:23,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123238545] [2020-12-22 06:00:23,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:23,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:23,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765055119] [2020-12-22 06:00:23,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:23,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:23,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:23,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:23,542 INFO L87 Difference]: Start difference. First operand 6871 states and 12927 transitions. Second operand 5 states. [2020-12-22 06:00:23,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:23,951 INFO L93 Difference]: Finished difference Result 13675 states and 25766 transitions. [2020-12-22 06:00:23,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:23,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-12-22 06:00:23,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:23,962 INFO L225 Difference]: With dead ends: 13675 [2020-12-22 06:00:23,962 INFO L226 Difference]: Without dead ends: 6865 [2020-12-22 06:00:23,970 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 06:00:23,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6865 states. [2020-12-22 06:00:24,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6865 to 6865. [2020-12-22 06:00:24,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6865 states. [2020-12-22 06:00:24,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6865 states to 6865 states and 12918 transitions. [2020-12-22 06:00:24,194 INFO L78 Accepts]: Start accepts. Automaton has 6865 states and 12918 transitions. Word has length 58 [2020-12-22 06:00:24,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:24,194 INFO L481 AbstractCegarLoop]: Abstraction has 6865 states and 12918 transitions. [2020-12-22 06:00:24,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:24,194 INFO L276 IsEmpty]: Start isEmpty. Operand 6865 states and 12918 transitions. [2020-12-22 06:00:24,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 06:00:24,196 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:24,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:24,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:00:24,196 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 06:00:24,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:24,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1327882090, now seen corresponding path program 1 times [2020-12-22 06:00:24,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:24,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993334561] [2020-12-22 06:00:24,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:24,255 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 06:00:24,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993334561] [2020-12-22 06:00:24,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:24,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:24,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773219892] [2020-12-22 06:00:24,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:24,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:24,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:24,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:24,258 INFO L87 Difference]: Start difference. First operand 6865 states and 12918 transitions. Second operand 4 states. [2020-12-22 06:00:24,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:24,536 INFO L93 Difference]: Finished difference Result 13669 states and 25757 transitions. [2020-12-22 06:00:24,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:00:24,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-12-22 06:00:24,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:24,546 INFO L225 Difference]: With dead ends: 13669 [2020-12-22 06:00:24,546 INFO L226 Difference]: Without dead ends: 6851 [2020-12-22 06:00:24,554 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 06:00:24,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6851 states. [2020-12-22 06:00:24,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6851 to 6851. [2020-12-22 06:00:24,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6851 states. [2020-12-22 06:00:24,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6851 states to 6851 states and 12897 transitions. [2020-12-22 06:00:24,773 INFO L78 Accepts]: Start accepts. Automaton has 6851 states and 12897 transitions. Word has length 58 [2020-12-22 06:00:24,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:24,773 INFO L481 AbstractCegarLoop]: Abstraction has 6851 states and 12897 transitions. [2020-12-22 06:00:24,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:24,773 INFO L276 IsEmpty]: Start isEmpty. Operand 6851 states and 12897 transitions. [2020-12-22 06:00:24,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 06:00:24,775 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:24,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:24,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:00:24,775 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 06:00:24,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:24,776 INFO L82 PathProgramCache]: Analyzing trace with hash -172510179, now seen corresponding path program 1 times [2020-12-22 06:00:24,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:24,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105728004] [2020-12-22 06:00:24,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:24,846 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 06:00:24,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105728004] [2020-12-22 06:00:24,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:24,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:00:24,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012751038] [2020-12-22 06:00:24,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:24,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:24,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:24,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:24,848 INFO L87 Difference]: Start difference. First operand 6851 states and 12897 transitions. Second operand 6 states. [2020-12-22 06:00:25,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:25,280 INFO L93 Difference]: Finished difference Result 13669 states and 25752 transitions. [2020-12-22 06:00:25,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:25,281 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-12-22 06:00:25,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:25,291 INFO L225 Difference]: With dead ends: 13669 [2020-12-22 06:00:25,291 INFO L226 Difference]: Without dead ends: 6871 [2020-12-22 06:00:25,299 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 06:00:25,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6871 states. [2020-12-22 06:00:25,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6871 to 6851. [2020-12-22 06:00:25,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6851 states. [2020-12-22 06:00:25,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6851 states to 6851 states and 12896 transitions. [2020-12-22 06:00:25,563 INFO L78 Accepts]: Start accepts. Automaton has 6851 states and 12896 transitions. Word has length 59 [2020-12-22 06:00:25,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:25,564 INFO L481 AbstractCegarLoop]: Abstraction has 6851 states and 12896 transitions. [2020-12-22 06:00:25,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:25,564 INFO L276 IsEmpty]: Start isEmpty. Operand 6851 states and 12896 transitions. [2020-12-22 06:00:25,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:00:25,565 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:25,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:25,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:00:25,566 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 06:00:25,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:25,567 INFO L82 PathProgramCache]: Analyzing trace with hash -486906799, now seen corresponding path program 1 times [2020-12-22 06:00:25,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:25,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987312295] [2020-12-22 06:00:25,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:25,650 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 06:00:25,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987312295] [2020-12-22 06:00:25,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:25,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:00:25,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583977129] [2020-12-22 06:00:25,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:25,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:25,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:25,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:25,654 INFO L87 Difference]: Start difference. First operand 6851 states and 12896 transitions. Second operand 6 states. [2020-12-22 06:00:26,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:26,102 INFO L93 Difference]: Finished difference Result 13659 states and 25733 transitions. [2020-12-22 06:00:26,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:26,103 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-12-22 06:00:26,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:26,112 INFO L225 Difference]: With dead ends: 13659 [2020-12-22 06:00:26,112 INFO L226 Difference]: Without dead ends: 6866 [2020-12-22 06:00:26,119 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 06:00:26,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6866 states. [2020-12-22 06:00:26,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6866 to 6851. [2020-12-22 06:00:26,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6851 states. [2020-12-22 06:00:26,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6851 states to 6851 states and 12895 transitions. [2020-12-22 06:00:26,376 INFO L78 Accepts]: Start accepts. Automaton has 6851 states and 12895 transitions. Word has length 60 [2020-12-22 06:00:26,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:26,376 INFO L481 AbstractCegarLoop]: Abstraction has 6851 states and 12895 transitions. [2020-12-22 06:00:26,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:26,376 INFO L276 IsEmpty]: Start isEmpty. Operand 6851 states and 12895 transitions. [2020-12-22 06:00:26,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:00:26,377 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:26,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:26,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:00:26,377 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 06:00:26,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:26,378 INFO L82 PathProgramCache]: Analyzing trace with hash 2090471378, now seen corresponding path program 1 times [2020-12-22 06:00:26,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:26,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946227778] [2020-12-22 06:00:26,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:26,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:26,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946227778] [2020-12-22 06:00:26,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:26,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:00:26,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015088118] [2020-12-22 06:00:26,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:26,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:26,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:26,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:26,458 INFO L87 Difference]: Start difference. First operand 6851 states and 12895 transitions. Second operand 3 states. [2020-12-22 06:00:27,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:27,219 INFO L93 Difference]: Finished difference Result 15303 states and 28849 transitions. [2020-12-22 06:00:27,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:27,220 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 06:00:27,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:27,241 INFO L225 Difference]: With dead ends: 15303 [2020-12-22 06:00:27,241 INFO L226 Difference]: Without dead ends: 11852 [2020-12-22 06:00:27,249 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 06:00:27,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11852 states. [2020-12-22 06:00:27,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11852 to 9873. [2020-12-22 06:00:27,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9873 states. [2020-12-22 06:00:27,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9873 states to 9873 states and 18595 transitions. [2020-12-22 06:00:27,648 INFO L78 Accepts]: Start accepts. Automaton has 9873 states and 18595 transitions. Word has length 61 [2020-12-22 06:00:27,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:27,648 INFO L481 AbstractCegarLoop]: Abstraction has 9873 states and 18595 transitions. [2020-12-22 06:00:27,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:27,649 INFO L276 IsEmpty]: Start isEmpty. Operand 9873 states and 18595 transitions. [2020-12-22 06:00:27,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 06:00:27,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:27,653 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 06:00:27,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:00:27,653 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 06:00:27,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:27,654 INFO L82 PathProgramCache]: Analyzing trace with hash -873239124, now seen corresponding path program 1 times [2020-12-22 06:00:27,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:27,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267726658] [2020-12-22 06:00:27,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:27,754 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 06:00:27,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267726658] [2020-12-22 06:00:27,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:27,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:00:27,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018625928] [2020-12-22 06:00:27,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 06:00:27,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:27,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 06:00:27,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:00:27,756 INFO L87 Difference]: Start difference. First operand 9873 states and 18595 transitions. Second operand 8 states. [2020-12-22 06:00:28,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:28,896 INFO L93 Difference]: Finished difference Result 20338 states and 38124 transitions. [2020-12-22 06:00:28,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 06:00:28,897 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-12-22 06:00:28,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:28,914 INFO L225 Difference]: With dead ends: 20338 [2020-12-22 06:00:28,914 INFO L226 Difference]: Without dead ends: 11677 [2020-12-22 06:00:28,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-12-22 06:00:28,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11677 states. [2020-12-22 06:00:29,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11677 to 8208. [2020-12-22 06:00:29,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8208 states. [2020-12-22 06:00:29,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8208 states to 8208 states and 15383 transitions. [2020-12-22 06:00:29,488 INFO L78 Accepts]: Start accepts. Automaton has 8208 states and 15383 transitions. Word has length 80 [2020-12-22 06:00:29,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:29,488 INFO L481 AbstractCegarLoop]: Abstraction has 8208 states and 15383 transitions. [2020-12-22 06:00:29,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 06:00:29,488 INFO L276 IsEmpty]: Start isEmpty. Operand 8208 states and 15383 transitions. [2020-12-22 06:00:29,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 06:00:29,491 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:29,491 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 06:00:29,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:00:29,491 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 06:00:29,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:29,492 INFO L82 PathProgramCache]: Analyzing trace with hash 2086058312, now seen corresponding path program 1 times [2020-12-22 06:00:29,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:29,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775929865] [2020-12-22 06:00:29,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:29,561 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 06:00:29,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775929865] [2020-12-22 06:00:29,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:29,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:00:29,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572538684] [2020-12-22 06:00:29,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:29,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:29,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:29,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:29,564 INFO L87 Difference]: Start difference. First operand 8208 states and 15383 transitions. Second operand 4 states. [2020-12-22 06:00:33,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:33,007 INFO L93 Difference]: Finished difference Result 22101 states and 41376 transitions. [2020-12-22 06:00:33,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:00:33,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-12-22 06:00:33,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:33,029 INFO L225 Difference]: With dead ends: 22101 [2020-12-22 06:00:33,030 INFO L226 Difference]: Without dead ends: 13960 [2020-12-22 06:00:33,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:33,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13960 states. [2020-12-22 06:00:33,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13960 to 8208. [2020-12-22 06:00:33,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8208 states. [2020-12-22 06:00:33,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8208 states to 8208 states and 14978 transitions. [2020-12-22 06:00:33,563 INFO L78 Accepts]: Start accepts. Automaton has 8208 states and 14978 transitions. Word has length 81 [2020-12-22 06:00:33,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:33,564 INFO L481 AbstractCegarLoop]: Abstraction has 8208 states and 14978 transitions. [2020-12-22 06:00:33,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:33,564 INFO L276 IsEmpty]: Start isEmpty. Operand 8208 states and 14978 transitions. [2020-12-22 06:00:33,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 06:00:33,567 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:33,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:33,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:00:33,568 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 06:00:33,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:33,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1485476940, now seen corresponding path program 1 times [2020-12-22 06:00:33,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:33,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730971530] [2020-12-22 06:00:33,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:33,649 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 06:00:33,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730971530] [2020-12-22 06:00:33,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:33,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:33,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541942861] [2020-12-22 06:00:33,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:33,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:33,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:33,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:33,652 INFO L87 Difference]: Start difference. First operand 8208 states and 14978 transitions. Second operand 6 states. [2020-12-22 06:00:42,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:42,014 INFO L93 Difference]: Finished difference Result 56844 states and 104969 transitions. [2020-12-22 06:00:42,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 06:00:42,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2020-12-22 06:00:42,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:42,084 INFO L225 Difference]: With dead ends: 56844 [2020-12-22 06:00:42,085 INFO L226 Difference]: Without dead ends: 48730 [2020-12-22 06:00:42,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:00:42,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48730 states. [2020-12-22 06:00:43,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48730 to 16186. [2020-12-22 06:00:43,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16186 states. [2020-12-22 06:00:43,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16186 states to 16186 states and 29578 transitions. [2020-12-22 06:00:43,166 INFO L78 Accepts]: Start accepts. Automaton has 16186 states and 29578 transitions. Word has length 89 [2020-12-22 06:00:43,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:43,166 INFO L481 AbstractCegarLoop]: Abstraction has 16186 states and 29578 transitions. [2020-12-22 06:00:43,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:43,166 INFO L276 IsEmpty]: Start isEmpty. Operand 16186 states and 29578 transitions. [2020-12-22 06:00:43,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 06:00:43,175 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:43,176 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 06:00:43,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:00:43,176 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 06:00:43,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:43,176 INFO L82 PathProgramCache]: Analyzing trace with hash -571945799, now seen corresponding path program 1 times [2020-12-22 06:00:43,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:43,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245169588] [2020-12-22 06:00:43,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:43,268 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 06:00:43,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245169588] [2020-12-22 06:00:43,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:43,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:43,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920025843] [2020-12-22 06:00:43,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:43,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:43,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:43,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:43,270 INFO L87 Difference]: Start difference. First operand 16186 states and 29578 transitions. Second operand 5 states. [2020-12-22 06:00:44,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:44,254 INFO L93 Difference]: Finished difference Result 32304 states and 59065 transitions. [2020-12-22 06:00:44,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:00:44,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-12-22 06:00:44,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:44,278 INFO L225 Difference]: With dead ends: 32304 [2020-12-22 06:00:44,278 INFO L226 Difference]: Without dead ends: 16197 [2020-12-22 06:00:44,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:00:44,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16197 states. [2020-12-22 06:00:45,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16197 to 16182. [2020-12-22 06:00:45,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16182 states. [2020-12-22 06:00:45,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16182 states to 16182 states and 29568 transitions. [2020-12-22 06:00:45,539 INFO L78 Accepts]: Start accepts. Automaton has 16182 states and 29568 transitions. Word has length 91 [2020-12-22 06:00:45,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:45,539 INFO L481 AbstractCegarLoop]: Abstraction has 16182 states and 29568 transitions. [2020-12-22 06:00:45,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:45,540 INFO L276 IsEmpty]: Start isEmpty. Operand 16182 states and 29568 transitions. [2020-12-22 06:00:45,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 06:00:45,546 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:45,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:45,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:00:45,547 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 06:00:45,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:45,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1075979457, now seen corresponding path program 1 times [2020-12-22 06:00:45,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:45,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360181774] [2020-12-22 06:00:45,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:45,661 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 06:00:45,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360181774] [2020-12-22 06:00:45,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:45,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:45,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390677969] [2020-12-22 06:00:45,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:00:45,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:45,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:00:45,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:45,664 INFO L87 Difference]: Start difference. First operand 16182 states and 29568 transitions. Second operand 6 states. [2020-12-22 06:00:52,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:52,377 INFO L93 Difference]: Finished difference Result 48630 states and 89705 transitions. [2020-12-22 06:00:52,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 06:00:52,378 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2020-12-22 06:00:52,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:52,446 INFO L225 Difference]: With dead ends: 48630 [2020-12-22 06:00:52,446 INFO L226 Difference]: Without dead ends: 42229 [2020-12-22 06:00:52,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-12-22 06:00:52,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42229 states. [2020-12-22 06:00:53,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42229 to 16172. [2020-12-22 06:00:53,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16172 states. [2020-12-22 06:00:53,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16172 states to 16172 states and 29548 transitions. [2020-12-22 06:00:53,464 INFO L78 Accepts]: Start accepts. Automaton has 16172 states and 29548 transitions. Word has length 92 [2020-12-22 06:00:53,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:53,464 INFO L481 AbstractCegarLoop]: Abstraction has 16172 states and 29548 transitions. [2020-12-22 06:00:53,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:00:53,464 INFO L276 IsEmpty]: Start isEmpty. Operand 16172 states and 29548 transitions. [2020-12-22 06:00:53,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 06:00:53,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:53,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:53,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:00:53,470 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 06:00:53,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:53,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1607960227, now seen corresponding path program 1 times [2020-12-22 06:00:53,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:53,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634992674] [2020-12-22 06:00:53,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:53,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:53,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634992674] [2020-12-22 06:00:53,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:53,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:53,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901337582] [2020-12-22 06:00:53,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:53,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:53,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:53,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:53,550 INFO L87 Difference]: Start difference. First operand 16172 states and 29548 transitions. Second operand 5 states. [2020-12-22 06:00:54,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:54,373 INFO L93 Difference]: Finished difference Result 24153 states and 44137 transitions. [2020-12-22 06:00:54,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:00:54,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-12-22 06:00:54,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:54,384 INFO L225 Difference]: With dead ends: 24153 [2020-12-22 06:00:54,384 INFO L226 Difference]: Without dead ends: 8011 [2020-12-22 06:00:54,397 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 06:00:54,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8011 states. [2020-12-22 06:00:54,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8011 to 8011. [2020-12-22 06:00:54,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8011 states. [2020-12-22 06:00:54,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8011 states to 8011 states and 14624 transitions. [2020-12-22 06:00:54,752 INFO L78 Accepts]: Start accepts. Automaton has 8011 states and 14624 transitions. Word has length 92 [2020-12-22 06:00:54,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:54,753 INFO L481 AbstractCegarLoop]: Abstraction has 8011 states and 14624 transitions. [2020-12-22 06:00:54,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:54,753 INFO L276 IsEmpty]: Start isEmpty. Operand 8011 states and 14624 transitions. [2020-12-22 06:00:54,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 06:00:54,756 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:54,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:54,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:00:54,757 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 06:00:54,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:54,757 INFO L82 PathProgramCache]: Analyzing trace with hash -323256589, now seen corresponding path program 1 times [2020-12-22 06:00:54,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:54,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513258361] [2020-12-22 06:00:54,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:54,831 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 06:00:54,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513258361] [2020-12-22 06:00:54,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:54,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:00:54,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538533799] [2020-12-22 06:00:54,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:54,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:54,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:54,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:54,833 INFO L87 Difference]: Start difference. First operand 8011 states and 14624 transitions. Second operand 3 states. [2020-12-22 06:00:55,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:55,606 INFO L93 Difference]: Finished difference Result 18773 states and 34316 transitions. [2020-12-22 06:00:55,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:55,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-22 06:00:55,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:55,621 INFO L225 Difference]: With dead ends: 18773 [2020-12-22 06:00:55,621 INFO L226 Difference]: Without dead ends: 12003 [2020-12-22 06:00:55,628 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 06:00:55,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12003 states. [2020-12-22 06:00:56,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12003 to 11988. [2020-12-22 06:00:56,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11988 states. [2020-12-22 06:00:56,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11988 states to 11988 states and 21899 transitions. [2020-12-22 06:00:56,161 INFO L78 Accepts]: Start accepts. Automaton has 11988 states and 21899 transitions. Word has length 98 [2020-12-22 06:00:56,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:56,161 INFO L481 AbstractCegarLoop]: Abstraction has 11988 states and 21899 transitions. [2020-12-22 06:00:56,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:56,161 INFO L276 IsEmpty]: Start isEmpty. Operand 11988 states and 21899 transitions. [2020-12-22 06:00:56,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 06:00:56,164 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:56,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:56,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:00:56,165 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:56,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:56,165 INFO L82 PathProgramCache]: Analyzing trace with hash -2017366869, now seen corresponding path program 1 times [2020-12-22 06:00:56,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:56,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231057660] [2020-12-22 06:00:56,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:56,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:56,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231057660] [2020-12-22 06:00:56,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:56,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:00:56,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256880623] [2020-12-22 06:00:56,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:56,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:56,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:56,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:56,239 INFO L87 Difference]: Start difference. First operand 11988 states and 21899 transitions. Second operand 3 states. [2020-12-22 06:00:57,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:57,536 INFO L93 Difference]: Finished difference Result 30026 states and 54895 transitions. [2020-12-22 06:00:57,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:57,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-12-22 06:00:57,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:57,563 INFO L225 Difference]: With dead ends: 30026 [2020-12-22 06:00:57,563 INFO L226 Difference]: Without dead ends: 19869 [2020-12-22 06:00:57,575 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 06:00:57,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19869 states. [2020-12-22 06:00:58,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19869 to 19854. [2020-12-22 06:00:58,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19854 states. [2020-12-22 06:00:58,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19854 states to 19854 states and 36300 transitions. [2020-12-22 06:00:58,722 INFO L78 Accepts]: Start accepts. Automaton has 19854 states and 36300 transitions. Word has length 99 [2020-12-22 06:00:58,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:58,722 INFO L481 AbstractCegarLoop]: Abstraction has 19854 states and 36300 transitions. [2020-12-22 06:00:58,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:58,722 INFO L276 IsEmpty]: Start isEmpty. Operand 19854 states and 36300 transitions. [2020-12-22 06:00:58,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 06:00:58,725 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:58,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:58,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:00:58,725 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 06:00:58,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:58,726 INFO L82 PathProgramCache]: Analyzing trace with hash 964755534, now seen corresponding path program 1 times [2020-12-22 06:00:58,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:58,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704841606] [2020-12-22 06:00:58,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:58,798 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 06:00:58,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704841606] [2020-12-22 06:00:58,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:58,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:00:58,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707219222] [2020-12-22 06:00:58,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:58,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:58,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:58,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:58,800 INFO L87 Difference]: Start difference. First operand 19854 states and 36300 transitions. Second operand 3 states. [2020-12-22 06:01:00,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:00,666 INFO L93 Difference]: Finished difference Result 52356 states and 95730 transitions. [2020-12-22 06:01:00,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:01:00,667 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-12-22 06:01:00,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:00,721 INFO L225 Difference]: With dead ends: 52356 [2020-12-22 06:01:00,721 INFO L226 Difference]: Without dead ends: 35405 [2020-12-22 06:01:00,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:00,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35405 states. [2020-12-22 06:01:02,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35405 to 35390. [2020-12-22 06:01:02,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35390 states. [2020-12-22 06:01:02,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35390 states to 35390 states and 64722 transitions. [2020-12-22 06:01:02,614 INFO L78 Accepts]: Start accepts. Automaton has 35390 states and 64722 transitions. Word has length 100 [2020-12-22 06:01:02,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:02,614 INFO L481 AbstractCegarLoop]: Abstraction has 35390 states and 64722 transitions. [2020-12-22 06:01:02,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:01:02,614 INFO L276 IsEmpty]: Start isEmpty. Operand 35390 states and 64722 transitions. [2020-12-22 06:01:02,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 06:01:02,618 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:02,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:02,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:01:02,618 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 06:01:02,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:02,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1413764250, now seen corresponding path program 1 times [2020-12-22 06:01:02,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:02,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763987673] [2020-12-22 06:01:02,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:02,692 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 06:01:02,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763987673] [2020-12-22 06:01:02,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:02,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:01:02,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063950120] [2020-12-22 06:01:02,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:01:02,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:02,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:01:02,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:02,695 INFO L87 Difference]: Start difference. First operand 35390 states and 64722 transitions. Second operand 3 states. [2020-12-22 06:01:06,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:06,169 INFO L93 Difference]: Finished difference Result 96624 states and 176591 transitions. [2020-12-22 06:01:06,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:01:06,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2020-12-22 06:01:06,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:06,259 INFO L225 Difference]: With dead ends: 96624 [2020-12-22 06:01:06,259 INFO L226 Difference]: Without dead ends: 66065 [2020-12-22 06:01:06,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:06,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66065 states. [2020-12-22 06:01:09,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66065 to 66050. [2020-12-22 06:01:09,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66050 states. [2020-12-22 06:01:10,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66050 states to 66050 states and 120724 transitions. [2020-12-22 06:01:10,082 INFO L78 Accepts]: Start accepts. Automaton has 66050 states and 120724 transitions. Word has length 101 [2020-12-22 06:01:10,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:10,082 INFO L481 AbstractCegarLoop]: Abstraction has 66050 states and 120724 transitions. [2020-12-22 06:01:10,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:01:10,082 INFO L276 IsEmpty]: Start isEmpty. Operand 66050 states and 120724 transitions. [2020-12-22 06:01:10,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-22 06:01:10,086 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:10,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:10,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 06:01:10,086 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:10,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:10,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1826500009, now seen corresponding path program 1 times [2020-12-22 06:01:10,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:10,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121661785] [2020-12-22 06:01:10,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:10,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:10,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121661785] [2020-12-22 06:01:10,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:10,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:01:10,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019385201] [2020-12-22 06:01:10,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:01:10,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:10,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:01:10,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:10,159 INFO L87 Difference]: Start difference. First operand 66050 states and 120724 transitions. Second operand 3 states. [2020-12-22 06:01:16,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:16,553 INFO L93 Difference]: Finished difference Result 184336 states and 336522 transitions. [2020-12-22 06:01:16,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:01:16,554 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-12-22 06:01:16,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:16,809 INFO L225 Difference]: With dead ends: 184336 [2020-12-22 06:01:16,810 INFO L226 Difference]: Without dead ends: 126541 [2020-12-22 06:01:16,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:01:16,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126541 states. [2020-12-22 06:01:23,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126541 to 126526. [2020-12-22 06:01:23,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126526 states. [2020-12-22 06:01:24,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126526 states to 126526 states and 230952 transitions. [2020-12-22 06:01:24,115 INFO L78 Accepts]: Start accepts. Automaton has 126526 states and 230952 transitions. Word has length 102 [2020-12-22 06:01:24,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:24,115 INFO L481 AbstractCegarLoop]: Abstraction has 126526 states and 230952 transitions. [2020-12-22 06:01:24,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:01:24,115 INFO L276 IsEmpty]: Start isEmpty. Operand 126526 states and 230952 transitions. [2020-12-22 06:01:24,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-22 06:01:24,121 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:24,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:24,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 06:01:24,121 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:24,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:24,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1692486503, now seen corresponding path program 1 times [2020-12-22 06:01:24,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:24,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412560012] [2020-12-22 06:01:24,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:24,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:24,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412560012] [2020-12-22 06:01:24,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:24,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:01:24,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645045738] [2020-12-22 06:01:24,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:01:24,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:24,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:01:24,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:01:24,539 INFO L87 Difference]: Start difference. First operand 126526 states and 230952 transitions. Second operand 6 states. [2020-12-22 06:01:44,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:44,863 INFO L93 Difference]: Finished difference Result 578443 states and 1061540 transitions. [2020-12-22 06:01:44,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 06:01:44,864 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-12-22 06:01:44,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:46,301 INFO L225 Difference]: With dead ends: 578443 [2020-12-22 06:01:46,302 INFO L226 Difference]: Without dead ends: 466348 [2020-12-22 06:01:46,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-12-22 06:01:46,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466348 states. [2020-12-22 06:02:01,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466348 to 224952. [2020-12-22 06:02:01,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224952 states. [2020-12-22 06:02:02,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224952 states to 224952 states and 409748 transitions. [2020-12-22 06:02:02,393 INFO L78 Accepts]: Start accepts. Automaton has 224952 states and 409748 transitions. Word has length 102 [2020-12-22 06:02:02,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:02,393 INFO L481 AbstractCegarLoop]: Abstraction has 224952 states and 409748 transitions. [2020-12-22 06:02:02,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:02,393 INFO L276 IsEmpty]: Start isEmpty. Operand 224952 states and 409748 transitions. [2020-12-22 06:02:02,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-22 06:02:02,405 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:02,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:02,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 06:02:02,405 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:02,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:02,407 INFO L82 PathProgramCache]: Analyzing trace with hash -998314127, now seen corresponding path program 1 times [2020-12-22 06:02:02,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:02,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499126176] [2020-12-22 06:02:02,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:02,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:02,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499126176] [2020-12-22 06:02:02,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:02,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:02,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17108826] [2020-12-22 06:02:02,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:02,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:02,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:02,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:02,511 INFO L87 Difference]: Start difference. First operand 224952 states and 409748 transitions. Second operand 5 states. [2020-12-22 06:02:15,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:15,049 INFO L93 Difference]: Finished difference Result 435177 states and 791696 transitions. [2020-12-22 06:02:15,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:02:15,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-12-22 06:02:15,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:15,560 INFO L225 Difference]: With dead ends: 435177 [2020-12-22 06:02:15,561 INFO L226 Difference]: Without dead ends: 225099 [2020-12-22 06:02:15,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:15,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225099 states. [2020-12-22 06:02:27,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225099 to 224952. [2020-12-22 06:02:27,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224952 states. [2020-12-22 06:02:28,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224952 states to 224952 states and 409415 transitions. [2020-12-22 06:02:28,283 INFO L78 Accepts]: Start accepts. Automaton has 224952 states and 409415 transitions. Word has length 104 [2020-12-22 06:02:28,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:28,283 INFO L481 AbstractCegarLoop]: Abstraction has 224952 states and 409415 transitions. [2020-12-22 06:02:28,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:02:28,283 INFO L276 IsEmpty]: Start isEmpty. Operand 224952 states and 409415 transitions. [2020-12-22 06:02:28,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-22 06:02:28,287 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:28,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:28,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 06:02:28,287 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:28,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:28,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1585120141, now seen corresponding path program 1 times [2020-12-22 06:02:28,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:28,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698226034] [2020-12-22 06:02:28,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:28,375 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 06:02:28,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698226034] [2020-12-22 06:02:28,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:28,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:02:28,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288466408] [2020-12-22 06:02:28,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:02:28,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:28,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:02:28,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:28,377 INFO L87 Difference]: Start difference. First operand 224952 states and 409415 transitions. Second operand 3 states.