/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_spec14_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:55:29,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:55:29,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:55:29,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:55:29,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:55:29,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:55:29,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:55:29,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:55:29,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:55:29,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:55:29,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:55:29,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:55:29,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:55:29,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:55:29,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:55:29,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:55:29,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:55:29,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:55:29,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:55:29,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:55:29,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:55:29,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:55:29,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:55:29,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:55:29,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:55:29,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:55:29,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:55:29,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:55:29,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:55:29,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:55:29,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:55:29,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:55:29,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:55:29,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:55:29,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:55:29,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:55:29,938 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:55:29,992 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:55:29,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:55:29,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:55:29,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:55:29,998 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:55:29,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:55:29,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:55:29,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:55:29,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:55:29,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:55:30,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:55:30,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:55:30,001 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:55:30,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:55:30,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:55:30,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:55:30,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:55:30,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:55:30,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:55:30,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:55:30,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:55:30,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:55:30,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:55:30,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:55:30,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:55:30,004 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:55:30,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:55:30,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:55:30,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:55:30,568 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:55:30,568 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:55:30,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec14_product11.cil.c [2020-12-22 05:55:30,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fa5e7774/4a5a0021b02043ff98c9bae1b74b121f/FLAG0909449b6 [2020-12-22 05:55:31,448 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:55:31,448 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec14_product11.cil.c [2020-12-22 05:55:31,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fa5e7774/4a5a0021b02043ff98c9bae1b74b121f/FLAG0909449b6 [2020-12-22 05:55:31,623 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fa5e7774/4a5a0021b02043ff98c9bae1b74b121f [2020-12-22 05:55:31,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:55:31,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:55:31,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:55:31,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:55:31,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:55:31,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:55:31" (1/1) ... [2020-12-22 05:55:31,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58f9a6d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:31, skipping insertion in model container [2020-12-22 05:55:31,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:55:31" (1/1) ... [2020-12-22 05:55:31,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:55:31,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:55:32,013 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_spec14_product11.cil.c[3376,3389] [2020-12-22 05:55:32,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:55:32,524 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:55:32,544 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_spec14_product11.cil.c[3376,3389] [2020-12-22 05:55:32,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:55:32,726 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:55:32,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:32 WrapperNode [2020-12-22 05:55:32,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:55:32,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:55:32,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:55:32,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:55:32,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:32" (1/1) ... [2020-12-22 05:55:32,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:32" (1/1) ... [2020-12-22 05:55:33,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:55:33,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:55:33,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:55:33,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:55:33,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:32" (1/1) ... [2020-12-22 05:55:33,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:32" (1/1) ... [2020-12-22 05:55:33,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:32" (1/1) ... [2020-12-22 05:55:33,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:32" (1/1) ... [2020-12-22 05:55:33,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:32" (1/1) ... [2020-12-22 05:55:33,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:32" (1/1) ... [2020-12-22 05:55:33,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:32" (1/1) ... [2020-12-22 05:55:33,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:55:33,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:55:33,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:55:33,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:55:33,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:32" (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 05:55:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:55:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:55:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:55:34,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:55:45,844 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:55:45,845 INFO L299 CfgBuilder]: Removed 1263 assume(true) statements. [2020-12-22 05:55:45,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:55:45 BoogieIcfgContainer [2020-12-22 05:55:45,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:55:45,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:55:45,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:55:45,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:55:45,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:55:31" (1/3) ... [2020-12-22 05:55:45,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fa93db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:55:45, skipping insertion in model container [2020-12-22 05:55:45,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:32" (2/3) ... [2020-12-22 05:55:45,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fa93db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:55:45, skipping insertion in model container [2020-12-22 05:55:45,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:55:45" (3/3) ... [2020-12-22 05:55:45,866 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product11.cil.c [2020-12-22 05:55:45,875 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:55:45,887 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 05:55:45,909 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 05:55:45,975 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:55:45,975 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:55:45,976 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:55:45,976 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:55:45,976 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:55:45,976 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:55:45,976 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:55:45,976 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:55:46,097 INFO L276 IsEmpty]: Start isEmpty. Operand 5697 states. [2020-12-22 05:55:46,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 05:55:46,118 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:46,119 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 05:55:46,120 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:55:46,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:46,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1333051134, now seen corresponding path program 1 times [2020-12-22 05:55:46,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:46,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484217695] [2020-12-22 05:55:46,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:46,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:55:46,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484217695] [2020-12-22 05:55:46,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:46,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:55:46,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968098592] [2020-12-22 05:55:46,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:55:46,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:46,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:55:46,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:55:46,718 INFO L87 Difference]: Start difference. First operand 5697 states. Second operand 3 states. [2020-12-22 05:55:47,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:47,225 INFO L93 Difference]: Finished difference Result 13694 states and 25898 transitions. [2020-12-22 05:55:47,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:55:47,227 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 05:55:47,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:47,301 INFO L225 Difference]: With dead ends: 13694 [2020-12-22 05:55:47,302 INFO L226 Difference]: Without dead ends: 8001 [2020-12-22 05:55:47,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:55:47,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8001 states. [2020-12-22 05:55:47,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8001 to 5693. [2020-12-22 05:55:47,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5693 states. [2020-12-22 05:55:47,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5693 states to 5693 states and 10754 transitions. [2020-12-22 05:55:47,642 INFO L78 Accepts]: Start accepts. Automaton has 5693 states and 10754 transitions. Word has length 44 [2020-12-22 05:55:47,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:47,643 INFO L481 AbstractCegarLoop]: Abstraction has 5693 states and 10754 transitions. [2020-12-22 05:55:47,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:55:47,643 INFO L276 IsEmpty]: Start isEmpty. Operand 5693 states and 10754 transitions. [2020-12-22 05:55:47,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 05:55:47,648 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:47,648 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 05:55:47,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:55:47,650 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:55:47,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:47,652 INFO L82 PathProgramCache]: Analyzing trace with hash 753177330, now seen corresponding path program 1 times [2020-12-22 05:55:47,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:47,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316228419] [2020-12-22 05:55:47,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:47,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:55:47,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316228419] [2020-12-22 05:55:47,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:47,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:55:47,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365728124] [2020-12-22 05:55:47,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:55:47,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:47,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:55:47,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:55:47,910 INFO L87 Difference]: Start difference. First operand 5693 states and 10754 transitions. Second operand 6 states. [2020-12-22 05:55:48,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:48,738 INFO L93 Difference]: Finished difference Result 15912 states and 30060 transitions. [2020-12-22 05:55:48,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:55:48,739 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-12-22 05:55:48,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:48,805 INFO L225 Difference]: With dead ends: 15912 [2020-12-22 05:55:48,805 INFO L226 Difference]: Without dead ends: 10261 [2020-12-22 05:55:48,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:55:48,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10261 states. [2020-12-22 05:55:49,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10261 to 5689. [2020-12-22 05:55:49,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5689 states. [2020-12-22 05:55:49,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5689 states to 5689 states and 10743 transitions. [2020-12-22 05:55:49,118 INFO L78 Accepts]: Start accepts. Automaton has 5689 states and 10743 transitions. Word has length 49 [2020-12-22 05:55:49,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:49,119 INFO L481 AbstractCegarLoop]: Abstraction has 5689 states and 10743 transitions. [2020-12-22 05:55:49,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:55:49,119 INFO L276 IsEmpty]: Start isEmpty. Operand 5689 states and 10743 transitions. [2020-12-22 05:55:49,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 05:55:49,124 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:49,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:55:49,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:55:49,125 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:55:49,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:49,127 INFO L82 PathProgramCache]: Analyzing trace with hash -877566190, now seen corresponding path program 1 times [2020-12-22 05:55:49,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:49,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49866489] [2020-12-22 05:55:49,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:49,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:55:49,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49866489] [2020-12-22 05:55:49,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:49,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:49,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275387338] [2020-12-22 05:55:49,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:49,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:49,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:49,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:49,274 INFO L87 Difference]: Start difference. First operand 5689 states and 10743 transitions. Second operand 4 states. [2020-12-22 05:55:50,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:50,132 INFO L93 Difference]: Finished difference Result 18182 states and 34338 transitions. [2020-12-22 05:55:50,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:50,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-12-22 05:55:50,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:50,202 INFO L225 Difference]: With dead ends: 18182 [2020-12-22 05:55:50,202 INFO L226 Difference]: Without dead ends: 12535 [2020-12-22 05:55:50,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:55:50,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12535 states. [2020-12-22 05:55:50,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12535 to 5689. [2020-12-22 05:55:50,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5689 states. [2020-12-22 05:55:50,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5689 states to 5689 states and 10739 transitions. [2020-12-22 05:55:50,528 INFO L78 Accepts]: Start accepts. Automaton has 5689 states and 10739 transitions. Word has length 50 [2020-12-22 05:55:50,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:50,536 INFO L481 AbstractCegarLoop]: Abstraction has 5689 states and 10739 transitions. [2020-12-22 05:55:50,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:50,536 INFO L276 IsEmpty]: Start isEmpty. Operand 5689 states and 10739 transitions. [2020-12-22 05:55:50,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 05:55:50,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:50,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:55:50,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:55:50,542 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:55:50,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:50,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1819328149, now seen corresponding path program 1 times [2020-12-22 05:55:50,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:50,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652476355] [2020-12-22 05:55:50,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:50,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:55:50,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652476355] [2020-12-22 05:55:50,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:50,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:50,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338932126] [2020-12-22 05:55:50,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:50,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:50,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:50,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:50,651 INFO L87 Difference]: Start difference. First operand 5689 states and 10739 transitions. Second operand 4 states. [2020-12-22 05:55:51,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:51,186 INFO L93 Difference]: Finished difference Result 13638 states and 25758 transitions. [2020-12-22 05:55:51,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:51,187 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-12-22 05:55:51,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:51,210 INFO L225 Difference]: With dead ends: 13638 [2020-12-22 05:55:51,210 INFO L226 Difference]: Without dead ends: 7991 [2020-12-22 05:55:51,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:55:51,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7991 states. [2020-12-22 05:55:51,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7991 to 5689. [2020-12-22 05:55:51,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5689 states. [2020-12-22 05:55:51,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5689 states to 5689 states and 10730 transitions. [2020-12-22 05:55:51,455 INFO L78 Accepts]: Start accepts. Automaton has 5689 states and 10730 transitions. Word has length 51 [2020-12-22 05:55:51,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:51,455 INFO L481 AbstractCegarLoop]: Abstraction has 5689 states and 10730 transitions. [2020-12-22 05:55:51,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:51,456 INFO L276 IsEmpty]: Start isEmpty. Operand 5689 states and 10730 transitions. [2020-12-22 05:55:51,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 05:55:51,458 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:51,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:55:51,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 05:55:51,458 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 05:55:51,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:51,459 INFO L82 PathProgramCache]: Analyzing trace with hash -438823369, now seen corresponding path program 1 times [2020-12-22 05:55:51,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:51,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118755522] [2020-12-22 05:55:51,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:51,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:55:51,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118755522] [2020-12-22 05:55:51,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:51,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:51,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358125538] [2020-12-22 05:55:51,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:51,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:51,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:51,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:51,563 INFO L87 Difference]: Start difference. First operand 5689 states and 10730 transitions. Second operand 4 states. [2020-12-22 05:55:52,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:52,224 INFO L93 Difference]: Finished difference Result 13638 states and 25740 transitions. [2020-12-22 05:55:52,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:52,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 05:55:52,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:52,253 INFO L225 Difference]: With dead ends: 13638 [2020-12-22 05:55:52,254 INFO L226 Difference]: Without dead ends: 7991 [2020-12-22 05:55:52,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:55:52,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7991 states. [2020-12-22 05:55:52,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7991 to 5689. [2020-12-22 05:55:52,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5689 states. [2020-12-22 05:55:52,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5689 states to 5689 states and 10721 transitions. [2020-12-22 05:55:52,488 INFO L78 Accepts]: Start accepts. Automaton has 5689 states and 10721 transitions. Word has length 52 [2020-12-22 05:55:52,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:52,488 INFO L481 AbstractCegarLoop]: Abstraction has 5689 states and 10721 transitions. [2020-12-22 05:55:52,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:52,488 INFO L276 IsEmpty]: Start isEmpty. Operand 5689 states and 10721 transitions. [2020-12-22 05:55:52,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 05:55:52,492 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:52,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:55:52,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 05:55:52,493 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 05:55:52,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:52,494 INFO L82 PathProgramCache]: Analyzing trace with hash -347540809, now seen corresponding path program 1 times [2020-12-22 05:55:52,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:52,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685883680] [2020-12-22 05:55:52,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:52,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:55:52,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685883680] [2020-12-22 05:55:52,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:52,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:52,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130784145] [2020-12-22 05:55:52,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:52,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:52,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:52,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:52,615 INFO L87 Difference]: Start difference. First operand 5689 states and 10721 transitions. Second operand 4 states. [2020-12-22 05:55:53,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:53,085 INFO L93 Difference]: Finished difference Result 15889 states and 29974 transitions. [2020-12-22 05:55:53,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:53,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 05:55:53,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:53,119 INFO L225 Difference]: With dead ends: 15889 [2020-12-22 05:55:53,119 INFO L226 Difference]: Without dead ends: 10221 [2020-12-22 05:55:53,134 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 05:55:53,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10221 states. [2020-12-22 05:55:53,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10221 to 5671. [2020-12-22 05:55:53,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5671 states. [2020-12-22 05:55:53,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5671 states to 5671 states and 10690 transitions. [2020-12-22 05:55:53,401 INFO L78 Accepts]: Start accepts. Automaton has 5671 states and 10690 transitions. Word has length 52 [2020-12-22 05:55:53,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:53,401 INFO L481 AbstractCegarLoop]: Abstraction has 5671 states and 10690 transitions. [2020-12-22 05:55:53,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:53,402 INFO L276 IsEmpty]: Start isEmpty. Operand 5671 states and 10690 transitions. [2020-12-22 05:55:53,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 05:55:53,404 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:53,404 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 05:55:53,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 05:55:53,406 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 05:55:53,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:53,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1684573798, now seen corresponding path program 1 times [2020-12-22 05:55:53,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:53,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902186465] [2020-12-22 05:55:53,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:53,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:55:53,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902186465] [2020-12-22 05:55:53,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:53,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:53,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735772211] [2020-12-22 05:55:53,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:53,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:53,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:53,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:53,473 INFO L87 Difference]: Start difference. First operand 5671 states and 10690 transitions. Second operand 4 states. [2020-12-22 05:55:53,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:53,949 INFO L93 Difference]: Finished difference Result 13602 states and 25657 transitions. [2020-12-22 05:55:53,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:53,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-12-22 05:55:53,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:53,975 INFO L225 Difference]: With dead ends: 13602 [2020-12-22 05:55:53,975 INFO L226 Difference]: Without dead ends: 7952 [2020-12-22 05:55:53,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:55:54,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7952 states. [2020-12-22 05:55:54,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7952 to 5671. [2020-12-22 05:55:54,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5671 states. [2020-12-22 05:55:54,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5671 states to 5671 states and 10684 transitions. [2020-12-22 05:55:54,367 INFO L78 Accepts]: Start accepts. Automaton has 5671 states and 10684 transitions. Word has length 53 [2020-12-22 05:55:54,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:54,368 INFO L481 AbstractCegarLoop]: Abstraction has 5671 states and 10684 transitions. [2020-12-22 05:55:54,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:54,368 INFO L276 IsEmpty]: Start isEmpty. Operand 5671 states and 10684 transitions. [2020-12-22 05:55:54,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 05:55:54,370 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:54,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:55:54,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 05:55:54,371 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 05:55:54,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:54,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1610661540, now seen corresponding path program 1 times [2020-12-22 05:55:54,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:54,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982077649] [2020-12-22 05:55:54,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:54,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:55:54,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982077649] [2020-12-22 05:55:54,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:54,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:54,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266407997] [2020-12-22 05:55:54,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:54,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:54,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:54,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:54,451 INFO L87 Difference]: Start difference. First operand 5671 states and 10684 transitions. Second operand 4 states. [2020-12-22 05:55:54,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:54,922 INFO L93 Difference]: Finished difference Result 13602 states and 25645 transitions. [2020-12-22 05:55:54,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:54,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 05:55:54,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:54,946 INFO L225 Difference]: With dead ends: 13602 [2020-12-22 05:55:54,947 INFO L226 Difference]: Without dead ends: 7952 [2020-12-22 05:55:54,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:55:54,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7952 states. [2020-12-22 05:55:55,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7952 to 5671. [2020-12-22 05:55:55,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5671 states. [2020-12-22 05:55:55,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5671 states to 5671 states and 10678 transitions. [2020-12-22 05:55:55,193 INFO L78 Accepts]: Start accepts. Automaton has 5671 states and 10678 transitions. Word has length 54 [2020-12-22 05:55:55,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:55,196 INFO L481 AbstractCegarLoop]: Abstraction has 5671 states and 10678 transitions. [2020-12-22 05:55:55,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:55,197 INFO L276 IsEmpty]: Start isEmpty. Operand 5671 states and 10678 transitions. [2020-12-22 05:55:55,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 05:55:55,199 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:55,199 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 05:55:55,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 05:55:55,199 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 05:55:55,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:55,200 INFO L82 PathProgramCache]: Analyzing trace with hash -125917151, now seen corresponding path program 1 times [2020-12-22 05:55:55,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:55,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500307283] [2020-12-22 05:55:55,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:55,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:55:55,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500307283] [2020-12-22 05:55:55,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:55,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:55:55,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179977374] [2020-12-22 05:55:55,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:55:55,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:55,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:55:55,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:55:55,302 INFO L87 Difference]: Start difference. First operand 5671 states and 10678 transitions. Second operand 3 states. [2020-12-22 05:55:55,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:55,604 INFO L93 Difference]: Finished difference Result 13593 states and 25622 transitions. [2020-12-22 05:55:55,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:55:55,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 05:55:55,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:55,631 INFO L225 Difference]: With dead ends: 13593 [2020-12-22 05:55:55,632 INFO L226 Difference]: Without dead ends: 7943 [2020-12-22 05:55:55,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:55:55,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7943 states. [2020-12-22 05:55:55,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7943 to 5671. [2020-12-22 05:55:55,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5671 states. [2020-12-22 05:55:55,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5671 states to 5671 states and 10677 transitions. [2020-12-22 05:55:55,864 INFO L78 Accepts]: Start accepts. Automaton has 5671 states and 10677 transitions. Word has length 55 [2020-12-22 05:55:55,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:55,865 INFO L481 AbstractCegarLoop]: Abstraction has 5671 states and 10677 transitions. [2020-12-22 05:55:55,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:55:55,865 INFO L276 IsEmpty]: Start isEmpty. Operand 5671 states and 10677 transitions. [2020-12-22 05:55:55,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 05:55:55,867 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:55,867 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, 1, 1] [2020-12-22 05:55:55,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 05:55:55,868 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 05:55:55,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:55,868 INFO L82 PathProgramCache]: Analyzing trace with hash 718088351, now seen corresponding path program 1 times [2020-12-22 05:55:55,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:55,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072723549] [2020-12-22 05:55:55,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:56,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:55:56,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072723549] [2020-12-22 05:55:56,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:56,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:55:56,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599383449] [2020-12-22 05:55:56,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:55:56,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:56,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:55:56,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:55:56,027 INFO L87 Difference]: Start difference. First operand 5671 states and 10677 transitions. Second operand 7 states. [2020-12-22 05:55:56,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:56,836 INFO L93 Difference]: Finished difference Result 18153 states and 34215 transitions. [2020-12-22 05:55:56,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:55:56,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2020-12-22 05:55:56,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:56,877 INFO L225 Difference]: With dead ends: 18153 [2020-12-22 05:55:56,877 INFO L226 Difference]: Without dead ends: 12509 [2020-12-22 05:55:56,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:55:56,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12509 states. [2020-12-22 05:55:57,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12509 to 5673. [2020-12-22 05:55:57,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5673 states. [2020-12-22 05:55:57,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5673 states to 5673 states and 10678 transitions. [2020-12-22 05:55:57,231 INFO L78 Accepts]: Start accepts. Automaton has 5673 states and 10678 transitions. Word has length 55 [2020-12-22 05:55:57,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:57,231 INFO L481 AbstractCegarLoop]: Abstraction has 5673 states and 10678 transitions. [2020-12-22 05:55:57,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:55:57,231 INFO L276 IsEmpty]: Start isEmpty. Operand 5673 states and 10678 transitions. [2020-12-22 05:55:57,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 05:55:57,234 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:57,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:55:57,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 05:55:57,235 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 05:55:57,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:57,235 INFO L82 PathProgramCache]: Analyzing trace with hash -344892079, now seen corresponding path program 1 times [2020-12-22 05:55:57,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:57,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898820147] [2020-12-22 05:55:57,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:57,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:55:57,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898820147] [2020-12-22 05:55:57,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:57,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:55:57,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238986561] [2020-12-22 05:55:57,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:57,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:57,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:57,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:57,324 INFO L87 Difference]: Start difference. First operand 5673 states and 10678 transitions. Second operand 4 states. [2020-12-22 05:55:59,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:59,970 INFO L93 Difference]: Finished difference Result 15978 states and 30157 transitions. [2020-12-22 05:55:59,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:55:59,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-12-22 05:55:59,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:59,990 INFO L225 Difference]: With dead ends: 15978 [2020-12-22 05:55:59,991 INFO L226 Difference]: Without dead ends: 10338 [2020-12-22 05:56:00,001 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 05:56:00,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10338 states. [2020-12-22 05:56:00,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10338 to 5673. [2020-12-22 05:56:00,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5673 states. [2020-12-22 05:56:00,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5673 states to 5673 states and 10473 transitions. [2020-12-22 05:56:00,374 INFO L78 Accepts]: Start accepts. Automaton has 5673 states and 10473 transitions. Word has length 56 [2020-12-22 05:56:00,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:00,374 INFO L481 AbstractCegarLoop]: Abstraction has 5673 states and 10473 transitions. [2020-12-22 05:56:00,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:00,374 INFO L276 IsEmpty]: Start isEmpty. Operand 5673 states and 10473 transitions. [2020-12-22 05:56:00,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 05:56:00,377 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:00,377 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:00,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 05:56:00,377 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 05:56:00,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:00,378 INFO L82 PathProgramCache]: Analyzing trace with hash -307163493, now seen corresponding path program 1 times [2020-12-22 05:56:00,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:00,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039428104] [2020-12-22 05:56:00,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:00,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:00,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039428104] [2020-12-22 05:56:00,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:00,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:56:00,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720923327] [2020-12-22 05:56:00,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:56:00,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:00,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:56:00,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:56:00,461 INFO L87 Difference]: Start difference. First operand 5673 states and 10473 transitions. Second operand 6 states. [2020-12-22 05:56:06,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:06,348 INFO L93 Difference]: Finished difference Result 47008 states and 88331 transitions. [2020-12-22 05:56:06,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:56:06,348 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-12-22 05:56:06,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:06,399 INFO L225 Difference]: With dead ends: 47008 [2020-12-22 05:56:06,399 INFO L226 Difference]: Without dead ends: 41386 [2020-12-22 05:56:06,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:56:06,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41386 states. [2020-12-22 05:56:07,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41386 to 11224. [2020-12-22 05:56:07,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11224 states. [2020-12-22 05:56:07,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11224 states to 11224 states and 20755 transitions. [2020-12-22 05:56:07,157 INFO L78 Accepts]: Start accepts. Automaton has 11224 states and 20755 transitions. Word has length 68 [2020-12-22 05:56:07,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:07,157 INFO L481 AbstractCegarLoop]: Abstraction has 11224 states and 20755 transitions. [2020-12-22 05:56:07,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:56:07,158 INFO L276 IsEmpty]: Start isEmpty. Operand 11224 states and 20755 transitions. [2020-12-22 05:56:07,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 05:56:07,162 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:07,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:07,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 05:56:07,163 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 05:56:07,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:07,163 INFO L82 PathProgramCache]: Analyzing trace with hash 422557755, now seen corresponding path program 1 times [2020-12-22 05:56:07,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:07,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697780715] [2020-12-22 05:56:07,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:07,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:07,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697780715] [2020-12-22 05:56:07,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:07,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:07,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550328202] [2020-12-22 05:56:07,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:56:07,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:07,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:56:07,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:07,248 INFO L87 Difference]: Start difference. First operand 11224 states and 20755 transitions. Second operand 5 states. [2020-12-22 05:56:12,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:12,644 INFO L93 Difference]: Finished difference Result 57400 states and 106772 transitions. [2020-12-22 05:56:12,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:56:12,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-12-22 05:56:12,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:12,708 INFO L225 Difference]: With dead ends: 57400 [2020-12-22 05:56:12,708 INFO L226 Difference]: Without dead ends: 46265 [2020-12-22 05:56:12,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:56:12,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46265 states. [2020-12-22 05:56:13,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46265 to 15756. [2020-12-22 05:56:13,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15756 states. [2020-12-22 05:56:13,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15756 states to 15756 states and 29115 transitions. [2020-12-22 05:56:13,918 INFO L78 Accepts]: Start accepts. Automaton has 15756 states and 29115 transitions. Word has length 70 [2020-12-22 05:56:13,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:13,919 INFO L481 AbstractCegarLoop]: Abstraction has 15756 states and 29115 transitions. [2020-12-22 05:56:13,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:56:13,920 INFO L276 IsEmpty]: Start isEmpty. Operand 15756 states and 29115 transitions. [2020-12-22 05:56:13,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 05:56:13,926 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:13,926 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] [2020-12-22 05:56:13,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 05:56:13,926 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 05:56:13,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:13,927 INFO L82 PathProgramCache]: Analyzing trace with hash 82693102, now seen corresponding path program 1 times [2020-12-22 05:56:13,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:13,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137955335] [2020-12-22 05:56:13,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:13,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:13,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137955335] [2020-12-22 05:56:13,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:13,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:56:13,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471203917] [2020-12-22 05:56:13,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:13,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:13,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:13,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:13,990 INFO L87 Difference]: Start difference. First operand 15756 states and 29115 transitions. Second operand 4 states. [2020-12-22 05:56:20,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:20,466 INFO L93 Difference]: Finished difference Result 63890 states and 119183 transitions. [2020-12-22 05:56:20,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:20,466 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-12-22 05:56:20,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:20,543 INFO L225 Difference]: With dead ends: 63890 [2020-12-22 05:56:20,543 INFO L226 Difference]: Without dead ends: 48184 [2020-12-22 05:56:20,564 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 05:56:20,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48184 states. [2020-12-22 05:56:21,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48184 to 26884. [2020-12-22 05:56:21,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26884 states. [2020-12-22 05:56:21,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26884 states to 26884 states and 49251 transitions. [2020-12-22 05:56:21,871 INFO L78 Accepts]: Start accepts. Automaton has 26884 states and 49251 transitions. Word has length 71 [2020-12-22 05:56:21,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:21,872 INFO L481 AbstractCegarLoop]: Abstraction has 26884 states and 49251 transitions. [2020-12-22 05:56:21,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:21,872 INFO L276 IsEmpty]: Start isEmpty. Operand 26884 states and 49251 transitions. [2020-12-22 05:56:21,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 05:56:21,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:21,876 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] [2020-12-22 05:56:21,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 05:56:21,876 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 05:56:21,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:21,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1017913741, now seen corresponding path program 1 times [2020-12-22 05:56:21,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:21,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178074840] [2020-12-22 05:56:21,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:22,119 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2020-12-22 05:56:22,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:22,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178074840] [2020-12-22 05:56:22,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:22,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:56:22,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195757042] [2020-12-22 05:56:22,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:56:22,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:22,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:56:22,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:22,132 INFO L87 Difference]: Start difference. First operand 26884 states and 49251 transitions. Second operand 5 states. [2020-12-22 05:56:23,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:23,512 INFO L93 Difference]: Finished difference Result 56771 states and 104052 transitions. [2020-12-22 05:56:23,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:56:23,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-12-22 05:56:23,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:23,552 INFO L225 Difference]: With dead ends: 56771 [2020-12-22 05:56:23,553 INFO L226 Difference]: Without dead ends: 29911 [2020-12-22 05:56:23,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:56:23,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29911 states. [2020-12-22 05:56:24,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29911 to 17539. [2020-12-22 05:56:24,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17539 states. [2020-12-22 05:56:24,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17539 states to 17539 states and 32131 transitions. [2020-12-22 05:56:24,552 INFO L78 Accepts]: Start accepts. Automaton has 17539 states and 32131 transitions. Word has length 71 [2020-12-22 05:56:24,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:24,552 INFO L481 AbstractCegarLoop]: Abstraction has 17539 states and 32131 transitions. [2020-12-22 05:56:24,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:56:24,552 INFO L276 IsEmpty]: Start isEmpty. Operand 17539 states and 32131 transitions. [2020-12-22 05:56:24,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 05:56:24,554 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:24,554 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] [2020-12-22 05:56:24,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 05:56:24,555 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 05:56:24,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:24,555 INFO L82 PathProgramCache]: Analyzing trace with hash 52065126, now seen corresponding path program 1 times [2020-12-22 05:56:24,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:24,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612965011] [2020-12-22 05:56:24,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:24,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:24,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612965011] [2020-12-22 05:56:24,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:24,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:24,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546284978] [2020-12-22 05:56:24,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:56:24,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:24,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:56:24,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:24,657 INFO L87 Difference]: Start difference. First operand 17539 states and 32131 transitions. Second operand 5 states. [2020-12-22 05:56:29,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:29,816 INFO L93 Difference]: Finished difference Result 142034 states and 260753 transitions. [2020-12-22 05:56:29,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:56:29,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-12-22 05:56:29,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:30,057 INFO L225 Difference]: With dead ends: 142034 [2020-12-22 05:56:30,057 INFO L226 Difference]: Without dead ends: 124538 [2020-12-22 05:56:30,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:56:30,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124538 states. [2020-12-22 05:56:32,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124538 to 33973. [2020-12-22 05:56:32,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33973 states. [2020-12-22 05:56:32,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33973 states to 33973 states and 62256 transitions. [2020-12-22 05:56:32,348 INFO L78 Accepts]: Start accepts. Automaton has 33973 states and 62256 transitions. Word has length 73 [2020-12-22 05:56:32,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:32,348 INFO L481 AbstractCegarLoop]: Abstraction has 33973 states and 62256 transitions. [2020-12-22 05:56:32,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:56:32,348 INFO L276 IsEmpty]: Start isEmpty. Operand 33973 states and 62256 transitions. [2020-12-22 05:56:32,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 05:56:32,351 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:32,351 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] [2020-12-22 05:56:32,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 05:56:32,351 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 05:56:32,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:32,352 INFO L82 PathProgramCache]: Analyzing trace with hash -791940376, now seen corresponding path program 1 times [2020-12-22 05:56:32,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:32,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594496575] [2020-12-22 05:56:32,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:32,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:32,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594496575] [2020-12-22 05:56:32,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:32,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:56:32,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760158777] [2020-12-22 05:56:32,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:56:32,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:32,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:56:32,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:32,424 INFO L87 Difference]: Start difference. First operand 33973 states and 62256 transitions. Second operand 3 states. [2020-12-22 05:56:34,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:34,155 INFO L93 Difference]: Finished difference Result 54566 states and 98922 transitions. [2020-12-22 05:56:34,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:56:34,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 05:56:34,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:34,198 INFO L225 Difference]: With dead ends: 54566 [2020-12-22 05:56:34,199 INFO L226 Difference]: Without dead ends: 35023 [2020-12-22 05:56:34,219 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 05:56:34,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35023 states. [2020-12-22 05:56:35,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35023 to 35013. [2020-12-22 05:56:35,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35013 states. [2020-12-22 05:56:35,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35013 states to 35013 states and 63695 transitions. [2020-12-22 05:56:35,948 INFO L78 Accepts]: Start accepts. Automaton has 35013 states and 63695 transitions. Word has length 73 [2020-12-22 05:56:35,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:35,949 INFO L481 AbstractCegarLoop]: Abstraction has 35013 states and 63695 transitions. [2020-12-22 05:56:35,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:56:35,949 INFO L276 IsEmpty]: Start isEmpty. Operand 35013 states and 63695 transitions. [2020-12-22 05:56:35,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 05:56:35,951 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:35,951 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] [2020-12-22 05:56:35,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 05:56:35,951 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 05:56:35,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:35,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1493540250, now seen corresponding path program 1 times [2020-12-22 05:56:35,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:35,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145966249] [2020-12-22 05:56:35,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:36,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:36,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145966249] [2020-12-22 05:56:36,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:36,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:56:36,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121802366] [2020-12-22 05:56:36,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:56:36,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:36,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:56:36,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:36,027 INFO L87 Difference]: Start difference. First operand 35013 states and 63695 transitions. Second operand 3 states. [2020-12-22 05:56:38,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:38,724 INFO L93 Difference]: Finished difference Result 73451 states and 132807 transitions. [2020-12-22 05:56:38,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:56:38,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 05:56:38,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:38,797 INFO L225 Difference]: With dead ends: 73451 [2020-12-22 05:56:38,797 INFO L226 Difference]: Without dead ends: 54124 [2020-12-22 05:56:38,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:38,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54124 states. [2020-12-22 05:56:41,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54124 to 54024. [2020-12-22 05:56:41,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54024 states. [2020-12-22 05:56:41,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54024 states to 54024 states and 97844 transitions. [2020-12-22 05:56:41,532 INFO L78 Accepts]: Start accepts. Automaton has 54024 states and 97844 transitions. Word has length 73 [2020-12-22 05:56:41,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:41,532 INFO L481 AbstractCegarLoop]: Abstraction has 54024 states and 97844 transitions. [2020-12-22 05:56:41,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:56:41,532 INFO L276 IsEmpty]: Start isEmpty. Operand 54024 states and 97844 transitions. [2020-12-22 05:56:41,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 05:56:41,535 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:41,535 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:41,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 05:56:41,535 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 05:56:41,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:41,536 INFO L82 PathProgramCache]: Analyzing trace with hash 208709347, now seen corresponding path program 1 times [2020-12-22 05:56:41,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:41,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121404909] [2020-12-22 05:56:41,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:41,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:41,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121404909] [2020-12-22 05:56:41,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:41,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:56:41,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216965658] [2020-12-22 05:56:41,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:56:41,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:41,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:56:41,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:41,612 INFO L87 Difference]: Start difference. First operand 54024 states and 97844 transitions. Second operand 5 states. [2020-12-22 05:56:44,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:44,662 INFO L93 Difference]: Finished difference Result 90054 states and 162515 transitions. [2020-12-22 05:56:44,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:44,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-12-22 05:56:44,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:44,740 INFO L225 Difference]: With dead ends: 90054 [2020-12-22 05:56:44,740 INFO L226 Difference]: Without dead ends: 54094 [2020-12-22 05:56:44,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:56:44,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54094 states. [2020-12-22 05:56:47,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54094 to 54024. [2020-12-22 05:56:47,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54024 states. [2020-12-22 05:56:47,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54024 states to 54024 states and 97733 transitions. [2020-12-22 05:56:47,465 INFO L78 Accepts]: Start accepts. Automaton has 54024 states and 97733 transitions. Word has length 74 [2020-12-22 05:56:47,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:47,470 INFO L481 AbstractCegarLoop]: Abstraction has 54024 states and 97733 transitions. [2020-12-22 05:56:47,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:56:47,471 INFO L276 IsEmpty]: Start isEmpty. Operand 54024 states and 97733 transitions. [2020-12-22 05:56:47,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 05:56:47,473 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:47,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:47,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 05:56:47,473 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 05:56:47,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:47,474 INFO L82 PathProgramCache]: Analyzing trace with hash -812359007, now seen corresponding path program 1 times [2020-12-22 05:56:47,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:47,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156975847] [2020-12-22 05:56:47,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:47,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:47,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156975847] [2020-12-22 05:56:47,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:47,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:56:47,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425328377] [2020-12-22 05:56:47,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:56:47,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:47,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:56:47,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:56:47,567 INFO L87 Difference]: Start difference. First operand 54024 states and 97733 transitions. Second operand 6 states. [2020-12-22 05:56:54,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:54,416 INFO L93 Difference]: Finished difference Result 163480 states and 299541 transitions. [2020-12-22 05:56:54,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 05:56:54,417 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-12-22 05:56:54,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:54,499 INFO L225 Difference]: With dead ends: 163480 [2020-12-22 05:56:54,501 INFO L226 Difference]: Without dead ends: 52883 [2020-12-22 05:56:54,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:56:54,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52883 states. [2020-12-22 05:56:56,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52883 to 27230. [2020-12-22 05:56:56,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27230 states. [2020-12-22 05:56:56,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27230 states to 27230 states and 49190 transitions. [2020-12-22 05:56:56,233 INFO L78 Accepts]: Start accepts. Automaton has 27230 states and 49190 transitions. Word has length 74 [2020-12-22 05:56:56,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:56,233 INFO L481 AbstractCegarLoop]: Abstraction has 27230 states and 49190 transitions. [2020-12-22 05:56:56,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:56:56,234 INFO L276 IsEmpty]: Start isEmpty. Operand 27230 states and 49190 transitions. [2020-12-22 05:56:56,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-12-22 05:56:56,267 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:56,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:56,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 05:56:56,268 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 05:56:56,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:56,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1360007014, now seen corresponding path program 1 times [2020-12-22 05:56:56,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:56,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733970256] [2020-12-22 05:56:56,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:56,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:56,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733970256] [2020-12-22 05:56:56,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:56,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:56:56,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14811679] [2020-12-22 05:56:56,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:56:56,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:56,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:56:56,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:56,407 INFO L87 Difference]: Start difference. First operand 27230 states and 49190 transitions. Second operand 5 states. [2020-12-22 05:56:59,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:59,277 INFO L93 Difference]: Finished difference Result 79369 states and 144457 transitions. [2020-12-22 05:56:59,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:59,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2020-12-22 05:56:59,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:59,370 INFO L225 Difference]: With dead ends: 79369 [2020-12-22 05:56:59,371 INFO L226 Difference]: Without dead ends: 60022 [2020-12-22 05:56:59,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:56:59,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60022 states. [2020-12-22 05:57:00,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60022 to 27311. [2020-12-22 05:57:00,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27311 states. [2020-12-22 05:57:00,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27311 states to 27311 states and 49271 transitions. [2020-12-22 05:57:00,971 INFO L78 Accepts]: Start accepts. Automaton has 27311 states and 49271 transitions. Word has length 207 [2020-12-22 05:57:00,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:00,971 INFO L481 AbstractCegarLoop]: Abstraction has 27311 states and 49271 transitions. [2020-12-22 05:57:00,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:57:00,971 INFO L276 IsEmpty]: Start isEmpty. Operand 27311 states and 49271 transitions. [2020-12-22 05:57:00,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-12-22 05:57:00,996 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:00,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:00,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 05:57:00,996 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 05:57:00,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:00,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1163284102, now seen corresponding path program 1 times [2020-12-22 05:57:00,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:00,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275875352] [2020-12-22 05:57:00,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:01,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:01,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275875352] [2020-12-22 05:57:01,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:01,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:57:01,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568672281] [2020-12-22 05:57:01,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:57:01,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:01,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:57:01,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:57:01,308 INFO L87 Difference]: Start difference. First operand 27311 states and 49271 transitions. Second operand 5 states. [2020-12-22 05:57:02,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:02,820 INFO L93 Difference]: Finished difference Result 42637 states and 76417 transitions. [2020-12-22 05:57:02,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:57:02,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2020-12-22 05:57:02,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:02,855 INFO L225 Difference]: With dead ends: 42637 [2020-12-22 05:57:02,855 INFO L226 Difference]: Without dead ends: 27359 [2020-12-22 05:57:02,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:57:02,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27359 states. [2020-12-22 05:57:04,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27359 to 27311. [2020-12-22 05:57:04,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27311 states. [2020-12-22 05:57:04,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27311 states to 27311 states and 49257 transitions. [2020-12-22 05:57:04,199 INFO L78 Accepts]: Start accepts. Automaton has 27311 states and 49257 transitions. Word has length 211 [2020-12-22 05:57:04,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:04,199 INFO L481 AbstractCegarLoop]: Abstraction has 27311 states and 49257 transitions. [2020-12-22 05:57:04,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:57:04,199 INFO L276 IsEmpty]: Start isEmpty. Operand 27311 states and 49257 transitions. [2020-12-22 05:57:04,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-12-22 05:57:04,224 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:04,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:04,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 05:57:04,225 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 05:57:04,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:04,226 INFO L82 PathProgramCache]: Analyzing trace with hash 398477116, now seen corresponding path program 1 times [2020-12-22 05:57:04,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:04,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710607009] [2020-12-22 05:57:04,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:04,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:04,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710607009] [2020-12-22 05:57:04,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:04,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:57:04,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120456272] [2020-12-22 05:57:04,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:57:04,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:04,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:57:04,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:57:04,369 INFO L87 Difference]: Start difference. First operand 27311 states and 49257 transitions. Second operand 6 states. [2020-12-22 05:57:08,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:08,573 INFO L93 Difference]: Finished difference Result 68356 states and 123862 transitions. [2020-12-22 05:57:08,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:57:08,574 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2020-12-22 05:57:08,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:08,652 INFO L225 Difference]: With dead ends: 68356 [2020-12-22 05:57:08,653 INFO L226 Difference]: Without dead ends: 49541 [2020-12-22 05:57:08,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:57:08,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49541 states. [2020-12-22 05:57:10,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49541 to 27286. [2020-12-22 05:57:10,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27286 states. [2020-12-22 05:57:10,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27286 states to 27286 states and 49207 transitions. [2020-12-22 05:57:10,172 INFO L78 Accepts]: Start accepts. Automaton has 27286 states and 49207 transitions. Word has length 211 [2020-12-22 05:57:10,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:10,172 INFO L481 AbstractCegarLoop]: Abstraction has 27286 states and 49207 transitions. [2020-12-22 05:57:10,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:57:10,172 INFO L276 IsEmpty]: Start isEmpty. Operand 27286 states and 49207 transitions. [2020-12-22 05:57:10,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-12-22 05:57:10,192 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:10,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:10,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 05:57:10,193 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 05:57:10,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:10,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1415376765, now seen corresponding path program 1 times [2020-12-22 05:57:10,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:10,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327984841] [2020-12-22 05:57:10,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:10,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:10,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327984841] [2020-12-22 05:57:10,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:10,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:57:10,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581922264] [2020-12-22 05:57:10,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:57:10,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:10,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:57:10,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:57:10,510 INFO L87 Difference]: Start difference. First operand 27286 states and 49207 transitions. Second operand 5 states. [2020-12-22 05:57:13,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:13,479 INFO L93 Difference]: Finished difference Result 77899 states and 140459 transitions. [2020-12-22 05:57:13,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:57:13,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 218 [2020-12-22 05:57:13,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:13,555 INFO L225 Difference]: With dead ends: 77899 [2020-12-22 05:57:13,556 INFO L226 Difference]: Without dead ends: 59098 [2020-12-22 05:57:13,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:57:13,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59098 states. [2020-12-22 05:57:15,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59098 to 26878. [2020-12-22 05:57:15,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26878 states. [2020-12-22 05:57:15,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26878 states to 26878 states and 48465 transitions. [2020-12-22 05:57:15,368 INFO L78 Accepts]: Start accepts. Automaton has 26878 states and 48465 transitions. Word has length 218 [2020-12-22 05:57:15,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:15,368 INFO L481 AbstractCegarLoop]: Abstraction has 26878 states and 48465 transitions. [2020-12-22 05:57:15,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:57:15,368 INFO L276 IsEmpty]: Start isEmpty. Operand 26878 states and 48465 transitions. [2020-12-22 05:57:15,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-12-22 05:57:15,386 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:15,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:15,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 05:57:15,387 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 05:57:15,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:15,387 INFO L82 PathProgramCache]: Analyzing trace with hash -451050007, now seen corresponding path program 1 times [2020-12-22 05:57:15,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:15,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611198179] [2020-12-22 05:57:15,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:15,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611198179] [2020-12-22 05:57:15,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:15,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:57:15,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600402823] [2020-12-22 05:57:15,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:57:15,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:15,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:57:15,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:57:15,511 INFO L87 Difference]: Start difference. First operand 26878 states and 48465 transitions. Second operand 5 states. [2020-12-22 05:57:18,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:18,226 INFO L93 Difference]: Finished difference Result 63938 states and 114633 transitions. [2020-12-22 05:57:18,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:57:18,227 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-12-22 05:57:18,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:18,283 INFO L225 Difference]: With dead ends: 63938 [2020-12-22 05:57:18,283 INFO L226 Difference]: Without dead ends: 46184 [2020-12-22 05:57:18,297 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 05:57:18,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46184 states. [2020-12-22 05:57:19,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46184 to 26933. [2020-12-22 05:57:19,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26933 states. [2020-12-22 05:57:19,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26933 states to 26933 states and 48513 transitions. [2020-12-22 05:57:19,812 INFO L78 Accepts]: Start accepts. Automaton has 26933 states and 48513 transitions. Word has length 220 [2020-12-22 05:57:19,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:19,813 INFO L481 AbstractCegarLoop]: Abstraction has 26933 states and 48513 transitions. [2020-12-22 05:57:19,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:57:19,813 INFO L276 IsEmpty]: Start isEmpty. Operand 26933 states and 48513 transitions. [2020-12-22 05:57:19,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-12-22 05:57:19,834 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:19,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:19,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 05:57:19,835 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 05:57:19,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:19,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1719568126, now seen corresponding path program 1 times [2020-12-22 05:57:19,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:19,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985544402] [2020-12-22 05:57:19,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:19,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:19,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985544402] [2020-12-22 05:57:19,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:19,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:57:19,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266420098] [2020-12-22 05:57:19,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:57:19,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:19,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:57:19,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:57:19,962 INFO L87 Difference]: Start difference. First operand 26933 states and 48513 transitions. Second operand 5 states. [2020-12-22 05:57:23,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:23,554 INFO L93 Difference]: Finished difference Result 64272 states and 116802 transitions. [2020-12-22 05:57:23,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:57:23,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 235 [2020-12-22 05:57:23,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:23,608 INFO L225 Difference]: With dead ends: 64272 [2020-12-22 05:57:23,608 INFO L226 Difference]: Without dead ends: 43725 [2020-12-22 05:57:23,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:57:23,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43725 states. [2020-12-22 05:57:24,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43725 to 26933. [2020-12-22 05:57:24,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26933 states. [2020-12-22 05:57:24,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26933 states to 26933 states and 48276 transitions. [2020-12-22 05:57:24,987 INFO L78 Accepts]: Start accepts. Automaton has 26933 states and 48276 transitions. Word has length 235 [2020-12-22 05:57:24,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:24,988 INFO L481 AbstractCegarLoop]: Abstraction has 26933 states and 48276 transitions. [2020-12-22 05:57:24,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:57:24,988 INFO L276 IsEmpty]: Start isEmpty. Operand 26933 states and 48276 transitions. [2020-12-22 05:57:25,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-12-22 05:57:25,017 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:25,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:25,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 05:57:25,018 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 05:57:25,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:25,018 INFO L82 PathProgramCache]: Analyzing trace with hash -736702885, now seen corresponding path program 1 times [2020-12-22 05:57:25,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:25,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866084064] [2020-12-22 05:57:25,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:25,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866084064] [2020-12-22 05:57:25,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:25,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:57:25,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312574048] [2020-12-22 05:57:25,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:57:25,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:25,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:57:25,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:57:25,281 INFO L87 Difference]: Start difference. First operand 26933 states and 48276 transitions. Second operand 6 states. [2020-12-22 05:57:27,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:27,211 INFO L93 Difference]: Finished difference Result 49848 states and 88760 transitions. [2020-12-22 05:57:27,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:57:27,212 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 235 [2020-12-22 05:57:27,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:27,251 INFO L225 Difference]: With dead ends: 49848 [2020-12-22 05:57:27,251 INFO L226 Difference]: Without dead ends: 31049 [2020-12-22 05:57:27,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:57:27,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31049 states. [2020-12-22 05:57:28,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31049 to 26933. [2020-12-22 05:57:28,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26933 states. [2020-12-22 05:57:28,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26933 states to 26933 states and 47931 transitions. [2020-12-22 05:57:28,726 INFO L78 Accepts]: Start accepts. Automaton has 26933 states and 47931 transitions. Word has length 235 [2020-12-22 05:57:28,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:28,726 INFO L481 AbstractCegarLoop]: Abstraction has 26933 states and 47931 transitions. [2020-12-22 05:57:28,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:57:28,727 INFO L276 IsEmpty]: Start isEmpty. Operand 26933 states and 47931 transitions. [2020-12-22 05:57:28,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-12-22 05:57:28,748 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:28,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:28,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 05:57:28,749 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 05:57:28,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:28,749 INFO L82 PathProgramCache]: Analyzing trace with hash 929613587, now seen corresponding path program 1 times [2020-12-22 05:57:28,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:28,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895003666] [2020-12-22 05:57:28,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:28,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:28,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895003666] [2020-12-22 05:57:28,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:28,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:57:28,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676660989] [2020-12-22 05:57:28,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:57:28,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:28,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:57:28,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:28,912 INFO L87 Difference]: Start difference. First operand 26933 states and 47931 transitions. Second operand 4 states. [2020-12-22 05:57:32,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:32,970 INFO L93 Difference]: Finished difference Result 48133 states and 85139 transitions. [2020-12-22 05:57:32,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:57:32,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 236 [2020-12-22 05:57:32,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:33,012 INFO L225 Difference]: With dead ends: 48133 [2020-12-22 05:57:33,013 INFO L226 Difference]: Without dead ends: 33795 [2020-12-22 05:57:33,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:33,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33795 states. [2020-12-22 05:57:34,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33795 to 33668. [2020-12-22 05:57:34,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33668 states. [2020-12-22 05:57:34,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33668 states to 33668 states and 59395 transitions. [2020-12-22 05:57:34,949 INFO L78 Accepts]: Start accepts. Automaton has 33668 states and 59395 transitions. Word has length 236 [2020-12-22 05:57:34,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:34,949 INFO L481 AbstractCegarLoop]: Abstraction has 33668 states and 59395 transitions. [2020-12-22 05:57:34,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:57:34,949 INFO L276 IsEmpty]: Start isEmpty. Operand 33668 states and 59395 transitions. [2020-12-22 05:57:34,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-12-22 05:57:34,971 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:34,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:34,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 05:57:34,971 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 05:57:34,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:34,972 INFO L82 PathProgramCache]: Analyzing trace with hash 392848056, now seen corresponding path program 1 times [2020-12-22 05:57:34,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:34,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994293872] [2020-12-22 05:57:34,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:35,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:35,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994293872] [2020-12-22 05:57:35,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:35,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:57:35,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111534853] [2020-12-22 05:57:35,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:57:35,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:35,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:57:35,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:57:35,118 INFO L87 Difference]: Start difference. First operand 33668 states and 59395 transitions. Second operand 7 states. [2020-12-22 05:57:39,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:39,606 INFO L93 Difference]: Finished difference Result 85534 states and 151997 transitions. [2020-12-22 05:57:39,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:57:39,606 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 238 [2020-12-22 05:57:39,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:39,688 INFO L225 Difference]: With dead ends: 85534 [2020-12-22 05:57:39,688 INFO L226 Difference]: Without dead ends: 67302 [2020-12-22 05:57:39,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:57:39,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67302 states. [2020-12-22 05:57:41,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67302 to 32983. [2020-12-22 05:57:41,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32983 states. [2020-12-22 05:57:41,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32983 states to 32983 states and 58328 transitions. [2020-12-22 05:57:41,822 INFO L78 Accepts]: Start accepts. Automaton has 32983 states and 58328 transitions. Word has length 238 [2020-12-22 05:57:41,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:41,823 INFO L481 AbstractCegarLoop]: Abstraction has 32983 states and 58328 transitions. [2020-12-22 05:57:41,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:57:41,823 INFO L276 IsEmpty]: Start isEmpty. Operand 32983 states and 58328 transitions. [2020-12-22 05:57:41,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-22 05:57:41,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:41,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:41,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 05:57:41,842 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 05:57:41,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:41,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1612130597, now seen corresponding path program 1 times [2020-12-22 05:57:41,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:41,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682871534] [2020-12-22 05:57:41,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:41,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:41,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682871534] [2020-12-22 05:57:41,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:41,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:57:41,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387296605] [2020-12-22 05:57:41,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:57:41,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:41,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:57:41,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:57:41,955 INFO L87 Difference]: Start difference. First operand 32983 states and 58328 transitions. Second operand 3 states. [2020-12-22 05:57:45,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:45,994 INFO L93 Difference]: Finished difference Result 59633 states and 105036 transitions. [2020-12-22 05:57:45,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:57:45,994 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-12-22 05:57:45,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:46,041 INFO L225 Difference]: With dead ends: 59633 [2020-12-22 05:57:46,042 INFO L226 Difference]: Without dead ends: 39613 [2020-12-22 05:57:46,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:57:46,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39613 states. [2020-12-22 05:57:48,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39613 to 39588. [2020-12-22 05:57:48,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39588 states. [2020-12-22 05:57:48,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39588 states to 39588 states and 69902 transitions. [2020-12-22 05:57:48,402 INFO L78 Accepts]: Start accepts. Automaton has 39588 states and 69902 transitions. Word has length 239 [2020-12-22 05:57:48,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:48,403 INFO L481 AbstractCegarLoop]: Abstraction has 39588 states and 69902 transitions. [2020-12-22 05:57:48,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:57:48,403 INFO L276 IsEmpty]: Start isEmpty. Operand 39588 states and 69902 transitions. [2020-12-22 05:57:48,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-12-22 05:57:48,423 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:48,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:48,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 05:57:48,423 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:48,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:48,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1309567651, now seen corresponding path program 1 times [2020-12-22 05:57:48,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:48,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571361422] [2020-12-22 05:57:48,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:48,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:48,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571361422] [2020-12-22 05:57:48,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:48,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:57:48,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033993485] [2020-12-22 05:57:48,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:57:48,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:48,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:57:48,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:48,584 INFO L87 Difference]: Start difference. First operand 39588 states and 69902 transitions. Second operand 4 states. [2020-12-22 05:57:53,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:53,405 INFO L93 Difference]: Finished difference Result 71514 states and 125978 transitions. [2020-12-22 05:57:53,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:57:53,406 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-12-22 05:57:53,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:53,478 INFO L225 Difference]: With dead ends: 71514 [2020-12-22 05:57:53,478 INFO L226 Difference]: Without dead ends: 44693 [2020-12-22 05:57:53,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:53,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44693 states. [2020-12-22 05:57:55,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44693 to 39056. [2020-12-22 05:57:55,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39056 states. [2020-12-22 05:57:55,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39056 states to 39056 states and 69091 transitions. [2020-12-22 05:57:55,821 INFO L78 Accepts]: Start accepts. Automaton has 39056 states and 69091 transitions. Word has length 240 [2020-12-22 05:57:55,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:55,822 INFO L481 AbstractCegarLoop]: Abstraction has 39056 states and 69091 transitions. [2020-12-22 05:57:55,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:57:55,822 INFO L276 IsEmpty]: Start isEmpty. Operand 39056 states and 69091 transitions. [2020-12-22 05:57:55,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-12-22 05:57:55,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:55,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:55,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 05:57:55,842 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:55,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:55,842 INFO L82 PathProgramCache]: Analyzing trace with hash -472608437, now seen corresponding path program 1 times [2020-12-22 05:57:55,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:55,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369206997] [2020-12-22 05:57:55,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:55,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369206997] [2020-12-22 05:57:55,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:55,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:57:55,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731255431] [2020-12-22 05:57:55,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:57:55,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:55,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:57:55,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:57:55,958 INFO L87 Difference]: Start difference. First operand 39056 states and 69091 transitions. Second operand 3 states. [2020-12-22 05:57:59,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:59,877 INFO L93 Difference]: Finished difference Result 67286 states and 118508 transitions. [2020-12-22 05:57:59,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:57:59,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-12-22 05:57:59,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:59,927 INFO L225 Difference]: With dead ends: 67286 [2020-12-22 05:57:59,927 INFO L226 Difference]: Without dead ends: 45563 [2020-12-22 05:57:59,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:57:59,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45563 states. [2020-12-22 05:58:02,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45563 to 45511. [2020-12-22 05:58:02,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45511 states. [2020-12-22 05:58:02,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45511 states to 45511 states and 80341 transitions. [2020-12-22 05:58:02,684 INFO L78 Accepts]: Start accepts. Automaton has 45511 states and 80341 transitions. Word has length 241 [2020-12-22 05:58:02,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:02,685 INFO L481 AbstractCegarLoop]: Abstraction has 45511 states and 80341 transitions. [2020-12-22 05:58:02,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:58:02,685 INFO L276 IsEmpty]: Start isEmpty. Operand 45511 states and 80341 transitions. [2020-12-22 05:58:02,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-12-22 05:58:02,706 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:02,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:02,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 05:58:02,707 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:02,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:02,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1541800937, now seen corresponding path program 1 times [2020-12-22 05:58:02,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:02,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633138135] [2020-12-22 05:58:02,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:02,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:02,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633138135] [2020-12-22 05:58:02,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:02,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:02,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358451558] [2020-12-22 05:58:02,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:58:02,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:02,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:58:02,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:58:02,823 INFO L87 Difference]: Start difference. First operand 45511 states and 80341 transitions. Second operand 3 states. [2020-12-22 05:58:08,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:08,088 INFO L93 Difference]: Finished difference Result 112988 states and 201343 transitions. [2020-12-22 05:58:08,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:58:08,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 243 [2020-12-22 05:58:08,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:08,186 INFO L225 Difference]: With dead ends: 112988 [2020-12-22 05:58:08,186 INFO L226 Difference]: Without dead ends: 73933 [2020-12-22 05:58:08,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:58:08,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73933 states. [2020-12-22 05:58:11,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73933 to 45307. [2020-12-22 05:58:11,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45307 states. [2020-12-22 05:58:11,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45307 states to 45307 states and 79729 transitions. [2020-12-22 05:58:11,158 INFO L78 Accepts]: Start accepts. Automaton has 45307 states and 79729 transitions. Word has length 243 [2020-12-22 05:58:11,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:11,159 INFO L481 AbstractCegarLoop]: Abstraction has 45307 states and 79729 transitions. [2020-12-22 05:58:11,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:58:11,159 INFO L276 IsEmpty]: Start isEmpty. Operand 45307 states and 79729 transitions. [2020-12-22 05:58:11,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-12-22 05:58:11,180 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:11,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:11,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 05:58:11,181 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:11,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:11,181 INFO L82 PathProgramCache]: Analyzing trace with hash 42093659, now seen corresponding path program 1 times [2020-12-22 05:58:11,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:11,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498600765] [2020-12-22 05:58:11,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:11,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:11,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498600765] [2020-12-22 05:58:11,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:11,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:11,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467531045] [2020-12-22 05:58:11,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:11,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:11,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:11,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:11,467 INFO L87 Difference]: Start difference. First operand 45307 states and 79729 transitions. Second operand 4 states. [2020-12-22 05:58:16,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:16,077 INFO L93 Difference]: Finished difference Result 77885 states and 136861 transitions. [2020-12-22 05:58:16,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:58:16,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 243 [2020-12-22 05:58:16,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:16,244 INFO L225 Difference]: With dead ends: 77885 [2020-12-22 05:58:16,244 INFO L226 Difference]: Without dead ends: 52229 [2020-12-22 05:58:16,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:16,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52229 states. [2020-12-22 05:58:20,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52229 to 52174. [2020-12-22 05:58:20,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52174 states. [2020-12-22 05:58:20,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52174 states to 52174 states and 91609 transitions. [2020-12-22 05:58:20,158 INFO L78 Accepts]: Start accepts. Automaton has 52174 states and 91609 transitions. Word has length 243 [2020-12-22 05:58:20,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:20,159 INFO L481 AbstractCegarLoop]: Abstraction has 52174 states and 91609 transitions. [2020-12-22 05:58:20,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:20,159 INFO L276 IsEmpty]: Start isEmpty. Operand 52174 states and 91609 transitions. [2020-12-22 05:58:20,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-12-22 05:58:20,181 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:20,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:20,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 05:58:20,182 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:20,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:20,182 INFO L82 PathProgramCache]: Analyzing trace with hash 2104910221, now seen corresponding path program 1 times [2020-12-22 05:58:20,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:20,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948538876] [2020-12-22 05:58:20,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:20,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:20,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948538876] [2020-12-22 05:58:20,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:20,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:20,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788727147] [2020-12-22 05:58:20,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:58:20,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:20,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:58:20,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:20,462 INFO L87 Difference]: Start difference. First operand 52174 states and 91609 transitions. Second operand 5 states. [2020-12-22 05:58:29,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:29,481 INFO L93 Difference]: Finished difference Result 191924 states and 344060 transitions. [2020-12-22 05:58:29,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:58:29,482 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 244 [2020-12-22 05:58:29,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:29,864 INFO L225 Difference]: With dead ends: 191924 [2020-12-22 05:58:29,864 INFO L226 Difference]: Without dead ends: 148242 [2020-12-22 05:58:29,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:58:30,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148242 states. [2020-12-22 05:58:33,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148242 to 52174. [2020-12-22 05:58:33,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52174 states. [2020-12-22 05:58:33,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52174 states to 52174 states and 91535 transitions. [2020-12-22 05:58:33,904 INFO L78 Accepts]: Start accepts. Automaton has 52174 states and 91535 transitions. Word has length 244 [2020-12-22 05:58:33,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:33,904 INFO L481 AbstractCegarLoop]: Abstraction has 52174 states and 91535 transitions. [2020-12-22 05:58:33,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:58:33,904 INFO L276 IsEmpty]: Start isEmpty. Operand 52174 states and 91535 transitions. [2020-12-22 05:58:33,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-12-22 05:58:33,926 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:33,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:33,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 05:58:33,927 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:33,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:33,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1878288527, now seen corresponding path program 1 times [2020-12-22 05:58:33,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:33,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453873322] [2020-12-22 05:58:33,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:34,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:34,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453873322] [2020-12-22 05:58:34,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:34,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:58:34,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395895357] [2020-12-22 05:58:34,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:58:34,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:34,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:58:34,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:58:34,079 INFO L87 Difference]: Start difference. First operand 52174 states and 91535 transitions. Second operand 3 states. [2020-12-22 05:58:40,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:40,257 INFO L93 Difference]: Finished difference Result 144942 states and 254232 transitions. [2020-12-22 05:58:40,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:58:40,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 247 [2020-12-22 05:58:40,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:40,425 INFO L225 Difference]: With dead ends: 144942 [2020-12-22 05:58:40,425 INFO L226 Difference]: Without dead ends: 99448 [2020-12-22 05:58:40,468 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 05:58:40,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99448 states. [2020-12-22 05:58:46,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99448 to 99444. [2020-12-22 05:58:46,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99444 states. [2020-12-22 05:58:46,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99444 states to 99444 states and 174845 transitions. [2020-12-22 05:58:46,874 INFO L78 Accepts]: Start accepts. Automaton has 99444 states and 174845 transitions. Word has length 247 [2020-12-22 05:58:46,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:46,876 INFO L481 AbstractCegarLoop]: Abstraction has 99444 states and 174845 transitions. [2020-12-22 05:58:46,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:58:46,876 INFO L276 IsEmpty]: Start isEmpty. Operand 99444 states and 174845 transitions. [2020-12-22 05:58:46,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-12-22 05:58:46,917 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:46,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:46,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 05:58:46,917 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:46,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:46,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1902835128, now seen corresponding path program 1 times [2020-12-22 05:58:46,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:46,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474140393] [2020-12-22 05:58:46,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:47,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:47,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474140393] [2020-12-22 05:58:47,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:47,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:58:47,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533023847] [2020-12-22 05:58:47,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:58:47,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:47,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:58:47,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:58:47,304 INFO L87 Difference]: Start difference. First operand 99444 states and 174845 transitions. Second operand 7 states. [2020-12-22 05:59:02,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:02,520 INFO L93 Difference]: Finished difference Result 312806 states and 550905 transitions. [2020-12-22 05:59:02,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:59:02,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 249 [2020-12-22 05:59:02,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:03,151 INFO L225 Difference]: With dead ends: 312806 [2020-12-22 05:59:03,152 INFO L226 Difference]: Without dead ends: 230014 [2020-12-22 05:59:03,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:59:03,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230014 states. [2020-12-22 05:59:10,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230014 to 99495. [2020-12-22 05:59:10,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99495 states. [2020-12-22 05:59:10,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99495 states to 99495 states and 174797 transitions. [2020-12-22 05:59:10,841 INFO L78 Accepts]: Start accepts. Automaton has 99495 states and 174797 transitions. Word has length 249 [2020-12-22 05:59:10,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:10,842 INFO L481 AbstractCegarLoop]: Abstraction has 99495 states and 174797 transitions. [2020-12-22 05:59:10,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:59:10,848 INFO L276 IsEmpty]: Start isEmpty. Operand 99495 states and 174797 transitions. [2020-12-22 05:59:10,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-12-22 05:59:10,897 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:10,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:10,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-22 05:59:10,898 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:10,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:10,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1484946426, now seen corresponding path program 1 times [2020-12-22 05:59:10,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:10,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301567205] [2020-12-22 05:59:10,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:11,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:11,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301567205] [2020-12-22 05:59:11,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:11,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:59:11,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690482549] [2020-12-22 05:59:11,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:59:11,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:11,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:59:11,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:59:11,050 INFO L87 Difference]: Start difference. First operand 99495 states and 174797 transitions. Second operand 7 states.