/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_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:56:01,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:56:01,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:56:01,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:56:01,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:56:01,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:56:01,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:56:01,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:56:01,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:56:01,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:56:01,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:56:01,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:56:01,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:56:01,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:56:01,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:56:01,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:56:01,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:56:01,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:56:01,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:56:01,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:56:01,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:56:01,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:56:01,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:56:01,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:56:01,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:56:01,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:56:01,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:56:01,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:56:01,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:56:01,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:56:01,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:56:01,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:56:01,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:56:01,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:56:01,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:56:01,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:56:01,639 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:56:01,694 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:56:01,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:56:01,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:56:01,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:56:01,698 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:56:01,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:56:01,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:56:01,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:56:01,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:56:01,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:56:01,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:56:01,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:56:01,701 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:56:01,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:56:01,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:56:01,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:56:01,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:56:01,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:56:01,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:56:01,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:56:01,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:56:01,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:56:01,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:56:01,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:56:01,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:56:01,704 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:56:02,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:56:02,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:56:02,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:56:02,110 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:56:02,111 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:56:02,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c [2020-12-22 05:56:02,198 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bffe85760/0b62761c021e4c048dc9cf0220abc1e5/FLAG7a3a121b9 [2020-12-22 05:56:03,062 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:56:03,063 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c [2020-12-22 05:56:03,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bffe85760/0b62761c021e4c048dc9cf0220abc1e5/FLAG7a3a121b9 [2020-12-22 05:56:03,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bffe85760/0b62761c021e4c048dc9cf0220abc1e5 [2020-12-22 05:56:03,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:56:03,208 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:56:03,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:56:03,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:56:03,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:56:03,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:56:03" (1/1) ... [2020-12-22 05:56:03,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1de1ddc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:03, skipping insertion in model container [2020-12-22 05:56:03,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:56:03" (1/1) ... [2020-12-22 05:56:03,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:56:03,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:56:03,928 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_product28.cil.c[43379,43392] [2020-12-22 05:56:04,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:56:04,130 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:56:04,210 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_product28.cil.c[43379,43392] [2020-12-22 05:56:04,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:56:04,367 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:56:04,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:04 WrapperNode [2020-12-22 05:56:04,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:56:04,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:56:04,371 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:56:04,371 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:56:04,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:04" (1/1) ... [2020-12-22 05:56:04,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:04" (1/1) ... [2020-12-22 05:56:05,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:56:05,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:56:05,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:56:05,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:56:05,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:04" (1/1) ... [2020-12-22 05:56:05,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:04" (1/1) ... [2020-12-22 05:56:05,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:04" (1/1) ... [2020-12-22 05:56:05,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:04" (1/1) ... [2020-12-22 05:56:05,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:04" (1/1) ... [2020-12-22 05:56:06,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:04" (1/1) ... [2020-12-22 05:56:06,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:04" (1/1) ... [2020-12-22 05:56:06,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:56:06,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:56:06,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:56:06,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:56:06,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:04" (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 05:56:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:56:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:56:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:56:06,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:56:25,054 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:56:25,055 INFO L299 CfgBuilder]: Removed 2903 assume(true) statements. [2020-12-22 05:56:25,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:56:25 BoogieIcfgContainer [2020-12-22 05:56:25,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:56:25,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:56:25,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:56:25,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:56:25,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:56:03" (1/3) ... [2020-12-22 05:56:25,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18afebf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:56:25, skipping insertion in model container [2020-12-22 05:56:25,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:56:04" (2/3) ... [2020-12-22 05:56:25,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18afebf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:56:25, skipping insertion in model container [2020-12-22 05:56:25,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:56:25" (3/3) ... [2020-12-22 05:56:25,077 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product28.cil.c [2020-12-22 05:56:25,084 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:56:25,094 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 05:56:25,113 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 05:56:25,185 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:56:25,185 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:56:25,185 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:56:25,185 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:56:25,186 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:56:25,186 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:56:25,186 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:56:25,186 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:56:25,363 INFO L276 IsEmpty]: Start isEmpty. Operand 12127 states. [2020-12-22 05:56:25,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 05:56:25,379 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:25,380 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] [2020-12-22 05:56:25,381 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 05:56:25,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:25,388 INFO L82 PathProgramCache]: Analyzing trace with hash 893856441, now seen corresponding path program 1 times [2020-12-22 05:56:25,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:25,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961235239] [2020-12-22 05:56:25,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:25,884 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 05:56:25,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961235239] [2020-12-22 05:56:25,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:25,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:56:25,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975446439] [2020-12-22 05:56:25,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:56:25,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:25,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:56:25,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:25,909 INFO L87 Difference]: Start difference. First operand 12127 states. Second operand 3 states. [2020-12-22 05:56:26,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:26,743 INFO L93 Difference]: Finished difference Result 29126 states and 54854 transitions. [2020-12-22 05:56:26,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:56:26,745 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 05:56:26,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:26,887 INFO L225 Difference]: With dead ends: 29126 [2020-12-22 05:56:26,888 INFO L226 Difference]: Without dead ends: 17003 [2020-12-22 05:56:26,924 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 05:56:26,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17003 states. [2020-12-22 05:56:27,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17003 to 12123. [2020-12-22 05:56:27,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12123 states. [2020-12-22 05:56:27,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12123 states to 12123 states and 22819 transitions. [2020-12-22 05:56:27,473 INFO L78 Accepts]: Start accepts. Automaton has 12123 states and 22819 transitions. Word has length 27 [2020-12-22 05:56:27,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:27,473 INFO L481 AbstractCegarLoop]: Abstraction has 12123 states and 22819 transitions. [2020-12-22 05:56:27,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:56:27,474 INFO L276 IsEmpty]: Start isEmpty. Operand 12123 states and 22819 transitions. [2020-12-22 05:56:27,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 05:56:27,477 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:27,477 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] [2020-12-22 05:56:27,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:56:27,478 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 05:56:27,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:27,479 INFO L82 PathProgramCache]: Analyzing trace with hash 2046271557, now seen corresponding path program 1 times [2020-12-22 05:56:27,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:27,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324061290] [2020-12-22 05:56:27,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:27,610 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 05:56:27,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324061290] [2020-12-22 05:56:27,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:27,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:27,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150872898] [2020-12-22 05:56:27,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:27,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:27,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:27,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:27,615 INFO L87 Difference]: Start difference. First operand 12123 states and 22819 transitions. Second operand 4 states. [2020-12-22 05:56:28,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:28,550 INFO L93 Difference]: Finished difference Result 33895 states and 63800 transitions. [2020-12-22 05:56:28,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:28,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-12-22 05:56:28,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:28,656 INFO L225 Difference]: With dead ends: 33895 [2020-12-22 05:56:28,656 INFO L226 Difference]: Without dead ends: 21793 [2020-12-22 05:56:28,686 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 05:56:28,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21793 states. [2020-12-22 05:56:29,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21793 to 12099. [2020-12-22 05:56:29,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12099 states. [2020-12-22 05:56:29,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12099 states to 12099 states and 22766 transitions. [2020-12-22 05:56:29,803 INFO L78 Accepts]: Start accepts. Automaton has 12099 states and 22766 transitions. Word has length 32 [2020-12-22 05:56:29,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:29,803 INFO L481 AbstractCegarLoop]: Abstraction has 12099 states and 22766 transitions. [2020-12-22 05:56:29,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:29,803 INFO L276 IsEmpty]: Start isEmpty. Operand 12099 states and 22766 transitions. [2020-12-22 05:56:29,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 05:56:29,810 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:29,810 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] [2020-12-22 05:56:29,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:56:29,811 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 05:56:29,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:29,814 INFO L82 PathProgramCache]: Analyzing trace with hash -331642843, now seen corresponding path program 1 times [2020-12-22 05:56:29,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:29,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621015485] [2020-12-22 05:56:29,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:29,942 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 05:56:29,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621015485] [2020-12-22 05:56:29,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:29,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:29,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858880049] [2020-12-22 05:56:29,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:29,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:29,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:29,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:29,946 INFO L87 Difference]: Start difference. First operand 12099 states and 22766 transitions. Second operand 4 states. [2020-12-22 05:56:31,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:31,088 INFO L93 Difference]: Finished difference Result 38718 states and 72862 transitions. [2020-12-22 05:56:31,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:31,088 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-12-22 05:56:31,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:31,190 INFO L225 Difference]: With dead ends: 38718 [2020-12-22 05:56:31,190 INFO L226 Difference]: Without dead ends: 26640 [2020-12-22 05:56:31,217 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 05:56:31,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26640 states. [2020-12-22 05:56:31,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26640 to 12099. [2020-12-22 05:56:31,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12099 states. [2020-12-22 05:56:31,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12099 states to 12099 states and 22765 transitions. [2020-12-22 05:56:31,698 INFO L78 Accepts]: Start accepts. Automaton has 12099 states and 22765 transitions. Word has length 33 [2020-12-22 05:56:31,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:31,705 INFO L481 AbstractCegarLoop]: Abstraction has 12099 states and 22765 transitions. [2020-12-22 05:56:31,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:31,706 INFO L276 IsEmpty]: Start isEmpty. Operand 12099 states and 22765 transitions. [2020-12-22 05:56:31,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 05:56:31,709 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:31,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:31,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:56:31,710 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 05:56:31,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:31,710 INFO L82 PathProgramCache]: Analyzing trace with hash -707817918, now seen corresponding path program 1 times [2020-12-22 05:56:31,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:31,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647822846] [2020-12-22 05:56:31,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:31,818 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 05:56:31,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647822846] [2020-12-22 05:56:31,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:31,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:31,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741660140] [2020-12-22 05:56:31,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:31,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:31,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:31,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:31,822 INFO L87 Difference]: Start difference. First operand 12099 states and 22765 transitions. Second operand 4 states. [2020-12-22 05:56:32,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:32,624 INFO L93 Difference]: Finished difference Result 29030 states and 54633 transitions. [2020-12-22 05:56:32,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:32,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-12-22 05:56:32,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:32,668 INFO L225 Difference]: With dead ends: 29030 [2020-12-22 05:56:32,668 INFO L226 Difference]: Without dead ends: 16952 [2020-12-22 05:56:32,690 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 05:56:32,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16952 states. [2020-12-22 05:56:33,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16952 to 12099. [2020-12-22 05:56:33,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12099 states. [2020-12-22 05:56:33,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12099 states to 12099 states and 22759 transitions. [2020-12-22 05:56:33,248 INFO L78 Accepts]: Start accepts. Automaton has 12099 states and 22759 transitions. Word has length 34 [2020-12-22 05:56:33,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:33,249 INFO L481 AbstractCegarLoop]: Abstraction has 12099 states and 22759 transitions. [2020-12-22 05:56:33,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:33,249 INFO L276 IsEmpty]: Start isEmpty. Operand 12099 states and 22759 transitions. [2020-12-22 05:56:33,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 05:56:33,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:33,250 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] [2020-12-22 05:56:33,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 05:56:33,251 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 05:56:33,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:33,251 INFO L82 PathProgramCache]: Analyzing trace with hash -174737824, now seen corresponding path program 1 times [2020-12-22 05:56:33,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:33,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219172842] [2020-12-22 05:56:33,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:33,334 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 05:56:33,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219172842] [2020-12-22 05:56:33,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:33,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:33,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40541157] [2020-12-22 05:56:33,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:33,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:33,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:33,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:33,337 INFO L87 Difference]: Start difference. First operand 12099 states and 22759 transitions. Second operand 4 states. [2020-12-22 05:56:34,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:34,343 INFO L93 Difference]: Finished difference Result 29030 states and 54621 transitions. [2020-12-22 05:56:34,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:34,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-12-22 05:56:34,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:34,384 INFO L225 Difference]: With dead ends: 29030 [2020-12-22 05:56:34,384 INFO L226 Difference]: Without dead ends: 16952 [2020-12-22 05:56:34,402 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 05:56:34,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16952 states. [2020-12-22 05:56:34,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16952 to 12099. [2020-12-22 05:56:34,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12099 states. [2020-12-22 05:56:34,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12099 states to 12099 states and 22753 transitions. [2020-12-22 05:56:34,875 INFO L78 Accepts]: Start accepts. Automaton has 12099 states and 22753 transitions. Word has length 35 [2020-12-22 05:56:34,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:34,876 INFO L481 AbstractCegarLoop]: Abstraction has 12099 states and 22753 transitions. [2020-12-22 05:56:34,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:34,876 INFO L276 IsEmpty]: Start isEmpty. Operand 12099 states and 22753 transitions. [2020-12-22 05:56:34,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 05:56:34,877 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:34,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:34,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 05:56:34,877 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 05:56:34,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:34,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1519518563, now seen corresponding path program 1 times [2020-12-22 05:56:34,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:34,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729072061] [2020-12-22 05:56:34,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:34,936 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 05:56:34,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729072061] [2020-12-22 05:56:34,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:34,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:34,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123573776] [2020-12-22 05:56:34,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:34,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:34,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:34,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:34,938 INFO L87 Difference]: Start difference. First operand 12099 states and 22753 transitions. Second operand 4 states. [2020-12-22 05:56:35,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:35,658 INFO L93 Difference]: Finished difference Result 29030 states and 54609 transitions. [2020-12-22 05:56:35,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:35,658 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-12-22 05:56:35,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:35,701 INFO L225 Difference]: With dead ends: 29030 [2020-12-22 05:56:35,701 INFO L226 Difference]: Without dead ends: 16952 [2020-12-22 05:56:35,716 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 05:56:35,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16952 states. [2020-12-22 05:56:36,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16952 to 12099. [2020-12-22 05:56:36,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12099 states. [2020-12-22 05:56:36,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12099 states to 12099 states and 22747 transitions. [2020-12-22 05:56:36,201 INFO L78 Accepts]: Start accepts. Automaton has 12099 states and 22747 transitions. Word has length 36 [2020-12-22 05:56:36,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:36,201 INFO L481 AbstractCegarLoop]: Abstraction has 12099 states and 22747 transitions. [2020-12-22 05:56:36,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:36,202 INFO L276 IsEmpty]: Start isEmpty. Operand 12099 states and 22747 transitions. [2020-12-22 05:56:36,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:56:36,203 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:36,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:36,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 05:56:36,203 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 05:56:36,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:36,204 INFO L82 PathProgramCache]: Analyzing trace with hash -948442981, now seen corresponding path program 1 times [2020-12-22 05:56:36,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:36,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657303747] [2020-12-22 05:56:36,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:36,269 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 05:56:36,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657303747] [2020-12-22 05:56:36,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:36,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:36,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278226585] [2020-12-22 05:56:36,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:36,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:36,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:36,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:36,272 INFO L87 Difference]: Start difference. First operand 12099 states and 22747 transitions. Second operand 4 states. [2020-12-22 05:56:37,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:37,122 INFO L93 Difference]: Finished difference Result 29030 states and 54597 transitions. [2020-12-22 05:56:37,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:37,123 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-12-22 05:56:37,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:37,192 INFO L225 Difference]: With dead ends: 29030 [2020-12-22 05:56:37,192 INFO L226 Difference]: Without dead ends: 16952 [2020-12-22 05:56:37,212 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 05:56:37,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16952 states. [2020-12-22 05:56:37,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16952 to 12099. [2020-12-22 05:56:37,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12099 states. [2020-12-22 05:56:37,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12099 states to 12099 states and 22741 transitions. [2020-12-22 05:56:37,746 INFO L78 Accepts]: Start accepts. Automaton has 12099 states and 22741 transitions. Word has length 37 [2020-12-22 05:56:37,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:37,746 INFO L481 AbstractCegarLoop]: Abstraction has 12099 states and 22741 transitions. [2020-12-22 05:56:37,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:37,746 INFO L276 IsEmpty]: Start isEmpty. Operand 12099 states and 22741 transitions. [2020-12-22 05:56:37,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 05:56:37,748 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:37,748 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] [2020-12-22 05:56:37,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 05:56:37,749 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 05:56:37,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:37,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1185458998, now seen corresponding path program 1 times [2020-12-22 05:56:37,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:37,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015494763] [2020-12-22 05:56:37,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:37,844 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 05:56:37,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015494763] [2020-12-22 05:56:37,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:37,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:56:37,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62200552] [2020-12-22 05:56:37,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:56:37,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:37,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:56:37,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:37,847 INFO L87 Difference]: Start difference. First operand 12099 states and 22741 transitions. Second operand 3 states. [2020-12-22 05:56:38,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:38,446 INFO L93 Difference]: Finished difference Result 29021 states and 54574 transitions. [2020-12-22 05:56:38,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:56:38,447 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-12-22 05:56:38,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:38,475 INFO L225 Difference]: With dead ends: 29021 [2020-12-22 05:56:38,476 INFO L226 Difference]: Without dead ends: 16943 [2020-12-22 05:56:38,493 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 05:56:38,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16943 states. [2020-12-22 05:56:39,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16943 to 12099. [2020-12-22 05:56:39,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12099 states. [2020-12-22 05:56:39,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12099 states to 12099 states and 22740 transitions. [2020-12-22 05:56:39,062 INFO L78 Accepts]: Start accepts. Automaton has 12099 states and 22740 transitions. Word has length 38 [2020-12-22 05:56:39,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:39,063 INFO L481 AbstractCegarLoop]: Abstraction has 12099 states and 22740 transitions. [2020-12-22 05:56:39,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:56:39,064 INFO L276 IsEmpty]: Start isEmpty. Operand 12099 states and 22740 transitions. [2020-12-22 05:56:39,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 05:56:39,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:39,065 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] [2020-12-22 05:56:39,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 05:56:39,065 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 05:56:39,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:39,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1115363592, now seen corresponding path program 1 times [2020-12-22 05:56:39,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:39,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027490958] [2020-12-22 05:56:39,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:39,151 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 05:56:39,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027490958] [2020-12-22 05:56:39,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:39,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:39,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795765578] [2020-12-22 05:56:39,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:39,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:39,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:39,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:39,160 INFO L87 Difference]: Start difference. First operand 12099 states and 22740 transitions. Second operand 4 states. [2020-12-22 05:56:40,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:40,122 INFO L93 Difference]: Finished difference Result 33853 states and 63665 transitions. [2020-12-22 05:56:40,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:40,123 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-12-22 05:56:40,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:40,149 INFO L225 Difference]: With dead ends: 33853 [2020-12-22 05:56:40,149 INFO L226 Difference]: Without dead ends: 21781 [2020-12-22 05:56:40,164 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 05:56:40,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21781 states. [2020-12-22 05:56:40,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21781 to 12101. [2020-12-22 05:56:40,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12101 states. [2020-12-22 05:56:40,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12101 states to 12101 states and 22741 transitions. [2020-12-22 05:56:40,668 INFO L78 Accepts]: Start accepts. Automaton has 12101 states and 22741 transitions. Word has length 38 [2020-12-22 05:56:40,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:40,669 INFO L481 AbstractCegarLoop]: Abstraction has 12101 states and 22741 transitions. [2020-12-22 05:56:40,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:40,669 INFO L276 IsEmpty]: Start isEmpty. Operand 12101 states and 22741 transitions. [2020-12-22 05:56:40,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 05:56:40,670 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:40,670 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] [2020-12-22 05:56:40,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 05:56:40,670 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 05:56:40,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:40,671 INFO L82 PathProgramCache]: Analyzing trace with hash 913715206, now seen corresponding path program 1 times [2020-12-22 05:56:40,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:40,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908715061] [2020-12-22 05:56:40,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:40,735 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 05:56:40,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908715061] [2020-12-22 05:56:40,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:40,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:56:40,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254278679] [2020-12-22 05:56:40,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:56:40,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:40,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:56:40,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:40,738 INFO L87 Difference]: Start difference. First operand 12101 states and 22741 transitions. Second operand 3 states. [2020-12-22 05:56:41,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:41,998 INFO L93 Difference]: Finished difference Result 32611 states and 61379 transitions. [2020-12-22 05:56:41,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:56:41,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-22 05:56:41,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:42,035 INFO L225 Difference]: With dead ends: 32611 [2020-12-22 05:56:42,036 INFO L226 Difference]: Without dead ends: 22915 [2020-12-22 05:56:42,050 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 05:56:42,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22915 states. [2020-12-22 05:56:42,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22915 to 17953. [2020-12-22 05:56:42,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17953 states. [2020-12-22 05:56:42,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17953 states to 17953 states and 33717 transitions. [2020-12-22 05:56:42,849 INFO L78 Accepts]: Start accepts. Automaton has 17953 states and 33717 transitions. Word has length 39 [2020-12-22 05:56:42,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:42,849 INFO L481 AbstractCegarLoop]: Abstraction has 17953 states and 33717 transitions. [2020-12-22 05:56:42,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:56:42,850 INFO L276 IsEmpty]: Start isEmpty. Operand 17953 states and 33717 transitions. [2020-12-22 05:56:42,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 05:56:42,854 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:42,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:42,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 05:56:42,855 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 05:56:42,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:42,856 INFO L82 PathProgramCache]: Analyzing trace with hash -924885291, now seen corresponding path program 1 times [2020-12-22 05:56:42,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:42,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780382709] [2020-12-22 05:56:42,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:42,925 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 05:56:42,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780382709] [2020-12-22 05:56:42,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:42,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:42,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85241679] [2020-12-22 05:56:42,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:56:42,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:42,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:56:42,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:42,928 INFO L87 Difference]: Start difference. First operand 17953 states and 33717 transitions. Second operand 5 states. [2020-12-22 05:56:43,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:43,999 INFO L93 Difference]: Finished difference Result 41265 states and 77069 transitions. [2020-12-22 05:56:43,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:56:43,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-12-22 05:56:43,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:44,026 INFO L225 Difference]: With dead ends: 41265 [2020-12-22 05:56:44,026 INFO L226 Difference]: Without dead ends: 24529 [2020-12-22 05:56:44,042 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 05:56:44,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24529 states. [2020-12-22 05:56:44,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24529 to 16794. [2020-12-22 05:56:44,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16794 states. [2020-12-22 05:56:44,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16794 states to 16794 states and 31361 transitions. [2020-12-22 05:56:44,782 INFO L78 Accepts]: Start accepts. Automaton has 16794 states and 31361 transitions. Word has length 58 [2020-12-22 05:56:44,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:44,782 INFO L481 AbstractCegarLoop]: Abstraction has 16794 states and 31361 transitions. [2020-12-22 05:56:44,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:56:44,782 INFO L276 IsEmpty]: Start isEmpty. Operand 16794 states and 31361 transitions. [2020-12-22 05:56:44,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 05:56:44,785 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:44,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:44,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 05:56:44,785 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 05:56:44,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:44,786 INFO L82 PathProgramCache]: Analyzing trace with hash 497327945, now seen corresponding path program 1 times [2020-12-22 05:56:44,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:44,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476405168] [2020-12-22 05:56:44,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:44,887 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 05:56:44,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476405168] [2020-12-22 05:56:44,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:44,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:56:44,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671815015] [2020-12-22 05:56:44,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:44,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:44,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:44,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:44,889 INFO L87 Difference]: Start difference. First operand 16794 states and 31361 transitions. Second operand 4 states. [2020-12-22 05:56:49,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:49,201 INFO L93 Difference]: Finished difference Result 45878 states and 86112 transitions. [2020-12-22 05:56:49,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:56:49,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-12-22 05:56:49,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:49,236 INFO L225 Difference]: With dead ends: 45878 [2020-12-22 05:56:49,237 INFO L226 Difference]: Without dead ends: 29120 [2020-12-22 05:56:49,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:49,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29120 states. [2020-12-22 05:56:49,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29120 to 16794. [2020-12-22 05:56:49,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16794 states. [2020-12-22 05:56:49,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16794 states to 16794 states and 31287 transitions. [2020-12-22 05:56:49,928 INFO L78 Accepts]: Start accepts. Automaton has 16794 states and 31287 transitions. Word has length 59 [2020-12-22 05:56:49,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:49,928 INFO L481 AbstractCegarLoop]: Abstraction has 16794 states and 31287 transitions. [2020-12-22 05:56:49,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:49,929 INFO L276 IsEmpty]: Start isEmpty. Operand 16794 states and 31287 transitions. [2020-12-22 05:56:49,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 05:56:49,931 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:49,931 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] [2020-12-22 05:56:49,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 05:56:49,932 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 05:56:49,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:49,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1727491546, now seen corresponding path program 1 times [2020-12-22 05:56:49,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:49,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209836474] [2020-12-22 05:56:49,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:50,019 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 05:56:50,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209836474] [2020-12-22 05:56:50,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:50,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:56:50,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305558965] [2020-12-22 05:56:50,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:50,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:50,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:50,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:50,022 INFO L87 Difference]: Start difference. First operand 16794 states and 31287 transitions. Second operand 4 states. [2020-12-22 05:56:54,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:54,208 INFO L93 Difference]: Finished difference Result 45878 states and 85965 transitions. [2020-12-22 05:56:54,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:56:54,211 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 05:56:54,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:54,258 INFO L225 Difference]: With dead ends: 45878 [2020-12-22 05:56:54,258 INFO L226 Difference]: Without dead ends: 29120 [2020-12-22 05:56:54,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:54,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29120 states. [2020-12-22 05:56:54,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29120 to 16794. [2020-12-22 05:56:54,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16794 states. [2020-12-22 05:56:54,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16794 states to 16794 states and 31213 transitions. [2020-12-22 05:56:54,940 INFO L78 Accepts]: Start accepts. Automaton has 16794 states and 31213 transitions. Word has length 62 [2020-12-22 05:56:54,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:54,940 INFO L481 AbstractCegarLoop]: Abstraction has 16794 states and 31213 transitions. [2020-12-22 05:56:54,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:54,941 INFO L276 IsEmpty]: Start isEmpty. Operand 16794 states and 31213 transitions. [2020-12-22 05:56:54,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 05:56:54,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:54,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:54,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 05:56:54,944 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 05:56:54,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:54,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1259574386, now seen corresponding path program 1 times [2020-12-22 05:56:54,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:54,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916917536] [2020-12-22 05:56:54,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:55,030 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 05:56:55,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916917536] [2020-12-22 05:56:55,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:55,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:56:55,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232560780] [2020-12-22 05:56:55,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:55,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:55,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:55,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:55,032 INFO L87 Difference]: Start difference. First operand 16794 states and 31213 transitions. Second operand 4 states. [2020-12-22 05:56:59,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:59,410 INFO L93 Difference]: Finished difference Result 45878 states and 85818 transitions. [2020-12-22 05:56:59,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:56:59,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-12-22 05:56:59,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:59,442 INFO L225 Difference]: With dead ends: 45878 [2020-12-22 05:56:59,442 INFO L226 Difference]: Without dead ends: 29120 [2020-12-22 05:56:59,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:59,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29120 states. [2020-12-22 05:57:00,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29120 to 16794. [2020-12-22 05:57:00,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16794 states. [2020-12-22 05:57:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16794 states to 16794 states and 31139 transitions. [2020-12-22 05:57:00,067 INFO L78 Accepts]: Start accepts. Automaton has 16794 states and 31139 transitions. Word has length 65 [2020-12-22 05:57:00,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:00,067 INFO L481 AbstractCegarLoop]: Abstraction has 16794 states and 31139 transitions. [2020-12-22 05:57:00,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:57:00,067 INFO L276 IsEmpty]: Start isEmpty. Operand 16794 states and 31139 transitions. [2020-12-22 05:57:00,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 05:57:00,069 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:00,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:00,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 05:57:00,069 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 05:57:00,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:00,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1960995425, now seen corresponding path program 1 times [2020-12-22 05:57:00,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:00,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436279956] [2020-12-22 05:57:00,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:00,171 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 05:57:00,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436279956] [2020-12-22 05:57:00,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:00,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:57:00,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292474594] [2020-12-22 05:57:00,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:57:00,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:00,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:57:00,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:00,173 INFO L87 Difference]: Start difference. First operand 16794 states and 31139 transitions. Second operand 4 states. [2020-12-22 05:57:04,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:04,421 INFO L93 Difference]: Finished difference Result 45878 states and 85671 transitions. [2020-12-22 05:57:04,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:57:04,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-12-22 05:57:04,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:04,454 INFO L225 Difference]: With dead ends: 45878 [2020-12-22 05:57:04,454 INFO L226 Difference]: Without dead ends: 29120 [2020-12-22 05:57:04,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:04,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29120 states. [2020-12-22 05:57:05,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29120 to 16794. [2020-12-22 05:57:05,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16794 states. [2020-12-22 05:57:05,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16794 states to 16794 states and 31065 transitions. [2020-12-22 05:57:05,092 INFO L78 Accepts]: Start accepts. Automaton has 16794 states and 31065 transitions. Word has length 68 [2020-12-22 05:57:05,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:05,092 INFO L481 AbstractCegarLoop]: Abstraction has 16794 states and 31065 transitions. [2020-12-22 05:57:05,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:57:05,092 INFO L276 IsEmpty]: Start isEmpty. Operand 16794 states and 31065 transitions. [2020-12-22 05:57:05,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 05:57:05,095 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:05,095 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 05:57:05,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 05:57:05,095 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 05:57:05,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:05,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1177766255, now seen corresponding path program 1 times [2020-12-22 05:57:05,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:05,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878911817] [2020-12-22 05:57:05,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:05,163 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 05:57:05,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878911817] [2020-12-22 05:57:05,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:05,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:57:05,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759741430] [2020-12-22 05:57:05,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:57:05,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:05,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:57:05,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:57:05,165 INFO L87 Difference]: Start difference. First operand 16794 states and 31065 transitions. Second operand 5 states. [2020-12-22 05:57:10,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:10,260 INFO L93 Difference]: Finished difference Result 46922 states and 87182 transitions. [2020-12-22 05:57:10,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:57:10,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-12-22 05:57:10,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:10,296 INFO L225 Difference]: With dead ends: 46922 [2020-12-22 05:57:10,296 INFO L226 Difference]: Without dead ends: 30164 [2020-12-22 05:57:10,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:57:10,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30164 states. [2020-12-22 05:57:10,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30164 to 16794. [2020-12-22 05:57:10,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16794 states. [2020-12-22 05:57:10,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16794 states to 16794 states and 30651 transitions. [2020-12-22 05:57:10,968 INFO L78 Accepts]: Start accepts. Automaton has 16794 states and 30651 transitions. Word has length 71 [2020-12-22 05:57:10,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:10,969 INFO L481 AbstractCegarLoop]: Abstraction has 16794 states and 30651 transitions. [2020-12-22 05:57:10,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:57:10,969 INFO L276 IsEmpty]: Start isEmpty. Operand 16794 states and 30651 transitions. [2020-12-22 05:57:10,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 05:57:10,971 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:10,971 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] [2020-12-22 05:57:10,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 05:57:10,972 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 05:57:10,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:10,972 INFO L82 PathProgramCache]: Analyzing trace with hash -784739245, now seen corresponding path program 1 times [2020-12-22 05:57:10,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:10,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346987762] [2020-12-22 05:57:10,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:11,041 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 05:57:11,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346987762] [2020-12-22 05:57:11,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:11,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:57:11,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756133070] [2020-12-22 05:57:11,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:57:11,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:11,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:57:11,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:57:11,043 INFO L87 Difference]: Start difference. First operand 16794 states and 30651 transitions. Second operand 5 states. [2020-12-22 05:57:13,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:13,471 INFO L93 Difference]: Finished difference Result 57955 states and 106039 transitions. [2020-12-22 05:57:13,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:57:13,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-12-22 05:57:13,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:13,524 INFO L225 Difference]: With dead ends: 57955 [2020-12-22 05:57:13,525 INFO L226 Difference]: Without dead ends: 45727 [2020-12-22 05:57:13,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:57:13,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45727 states. [2020-12-22 05:57:14,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45727 to 16794. [2020-12-22 05:57:14,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16794 states. [2020-12-22 05:57:14,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16794 states to 16794 states and 30628 transitions. [2020-12-22 05:57:14,395 INFO L78 Accepts]: Start accepts. Automaton has 16794 states and 30628 transitions. Word has length 71 [2020-12-22 05:57:14,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:14,395 INFO L481 AbstractCegarLoop]: Abstraction has 16794 states and 30628 transitions. [2020-12-22 05:57:14,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:57:14,395 INFO L276 IsEmpty]: Start isEmpty. Operand 16794 states and 30628 transitions. [2020-12-22 05:57:14,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 05:57:14,399 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:14,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:14,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 05:57:14,400 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 05:57:14,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:14,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1172884438, now seen corresponding path program 1 times [2020-12-22 05:57:14,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:14,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643906763] [2020-12-22 05:57:14,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:14,460 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 05:57:14,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643906763] [2020-12-22 05:57:14,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:14,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:57:14,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864632980] [2020-12-22 05:57:14,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:57:14,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:14,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:57:14,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:14,462 INFO L87 Difference]: Start difference. First operand 16794 states and 30628 transitions. Second operand 4 states. [2020-12-22 05:57:15,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:15,676 INFO L93 Difference]: Finished difference Result 37929 states and 68808 transitions. [2020-12-22 05:57:15,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:57:15,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2020-12-22 05:57:15,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:15,699 INFO L225 Difference]: With dead ends: 37929 [2020-12-22 05:57:15,699 INFO L226 Difference]: Without dead ends: 21897 [2020-12-22 05:57:15,711 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 05:57:15,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21897 states. [2020-12-22 05:57:16,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21897 to 16840. [2020-12-22 05:57:16,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16840 states. [2020-12-22 05:57:16,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16840 states to 16840 states and 30674 transitions. [2020-12-22 05:57:16,270 INFO L78 Accepts]: Start accepts. Automaton has 16840 states and 30674 transitions. Word has length 95 [2020-12-22 05:57:16,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:16,271 INFO L481 AbstractCegarLoop]: Abstraction has 16840 states and 30674 transitions. [2020-12-22 05:57:16,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:57:16,271 INFO L276 IsEmpty]: Start isEmpty. Operand 16840 states and 30674 transitions. [2020-12-22 05:57:16,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 05:57:16,275 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:16,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:16,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 05:57:16,276 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 05:57:16,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:16,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1624866934, now seen corresponding path program 1 times [2020-12-22 05:57:16,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:16,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708180274] [2020-12-22 05:57:16,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:16,350 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 05:57:16,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708180274] [2020-12-22 05:57:16,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:16,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:57:16,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073704102] [2020-12-22 05:57:16,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:57:16,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:16,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:57:16,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:57:16,352 INFO L87 Difference]: Start difference. First operand 16840 states and 30674 transitions. Second operand 5 states. [2020-12-22 05:57:26,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:26,036 INFO L93 Difference]: Finished difference Result 88359 states and 161954 transitions. [2020-12-22 05:57:26,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:57:26,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-12-22 05:57:26,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:26,137 INFO L225 Difference]: With dead ends: 88359 [2020-12-22 05:57:26,138 INFO L226 Difference]: Without dead ends: 71590 [2020-12-22 05:57:26,160 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 05:57:26,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71590 states. [2020-12-22 05:57:27,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71590 to 24808. [2020-12-22 05:57:27,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24808 states. [2020-12-22 05:57:27,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24808 states to 24808 states and 45066 transitions. [2020-12-22 05:57:27,590 INFO L78 Accepts]: Start accepts. Automaton has 24808 states and 45066 transitions. Word has length 97 [2020-12-22 05:57:27,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:27,590 INFO L481 AbstractCegarLoop]: Abstraction has 24808 states and 45066 transitions. [2020-12-22 05:57:27,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:57:27,590 INFO L276 IsEmpty]: Start isEmpty. Operand 24808 states and 45066 transitions. [2020-12-22 05:57:27,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 05:57:27,594 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:27,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:27,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 05:57:27,594 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 05:57:27,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:27,595 INFO L82 PathProgramCache]: Analyzing trace with hash -2028249983, now seen corresponding path program 1 times [2020-12-22 05:57:27,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:27,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837613511] [2020-12-22 05:57:27,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:27,663 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 05:57:27,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837613511] [2020-12-22 05:57:27,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:27,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:57:27,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678257272] [2020-12-22 05:57:27,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:57:27,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:27,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:57:27,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:27,666 INFO L87 Difference]: Start difference. First operand 24808 states and 45066 transitions. Second operand 4 states. [2020-12-22 05:57:35,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:35,648 INFO L93 Difference]: Finished difference Result 78584 states and 143614 transitions. [2020-12-22 05:57:35,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:57:35,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-12-22 05:57:35,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:35,820 INFO L225 Difference]: With dead ends: 78584 [2020-12-22 05:57:35,820 INFO L226 Difference]: Without dead ends: 53821 [2020-12-22 05:57:35,848 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 05:57:35,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53821 states. [2020-12-22 05:57:37,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53821 to 34323. [2020-12-22 05:57:37,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34323 states. [2020-12-22 05:57:37,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34323 states to 34323 states and 61638 transitions. [2020-12-22 05:57:37,604 INFO L78 Accepts]: Start accepts. Automaton has 34323 states and 61638 transitions. Word has length 98 [2020-12-22 05:57:37,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:37,605 INFO L481 AbstractCegarLoop]: Abstraction has 34323 states and 61638 transitions. [2020-12-22 05:57:37,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:57:37,605 INFO L276 IsEmpty]: Start isEmpty. Operand 34323 states and 61638 transitions. [2020-12-22 05:57:37,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 05:57:37,608 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:37,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:37,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 05:57:37,609 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 05:57:37,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:37,609 INFO L82 PathProgramCache]: Analyzing trace with hash 890130681, now seen corresponding path program 1 times [2020-12-22 05:57:37,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:37,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920545517] [2020-12-22 05:57:37,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:37,679 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 05:57:37,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920545517] [2020-12-22 05:57:37,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:37,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:57:37,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140738221] [2020-12-22 05:57:37,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:57:37,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:37,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:57:37,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:57:37,681 INFO L87 Difference]: Start difference. First operand 34323 states and 61638 transitions. Second operand 5 states. [2020-12-22 05:57:47,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:47,628 INFO L93 Difference]: Finished difference Result 241611 states and 436107 transitions. [2020-12-22 05:57:47,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:57:47,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-12-22 05:57:47,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:48,172 INFO L225 Difference]: With dead ends: 241611 [2020-12-22 05:57:48,172 INFO L226 Difference]: Without dead ends: 207351 [2020-12-22 05:57:48,227 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 05:57:48,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207351 states. [2020-12-22 05:57:52,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207351 to 55475. [2020-12-22 05:57:52,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55475 states. [2020-12-22 05:57:52,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55475 states to 55475 states and 99859 transitions. [2020-12-22 05:57:52,140 INFO L78 Accepts]: Start accepts. Automaton has 55475 states and 99859 transitions. Word has length 100 [2020-12-22 05:57:52,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:52,140 INFO L481 AbstractCegarLoop]: Abstraction has 55475 states and 99859 transitions. [2020-12-22 05:57:52,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:57:52,140 INFO L276 IsEmpty]: Start isEmpty. Operand 55475 states and 99859 transitions. [2020-12-22 05:57:52,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 05:57:52,144 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:52,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:52,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 05:57:52,144 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 05:57:52,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:52,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1450830459, now seen corresponding path program 1 times [2020-12-22 05:57:52,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:52,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085910193] [2020-12-22 05:57:52,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:52,211 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 05:57:52,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085910193] [2020-12-22 05:57:52,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:52,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:57:52,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261792917] [2020-12-22 05:57:52,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:57:52,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:52,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:57:52,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:57:52,217 INFO L87 Difference]: Start difference. First operand 55475 states and 99859 transitions. Second operand 5 states. [2020-12-22 05:57:57,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:57,113 INFO L93 Difference]: Finished difference Result 137848 states and 243716 transitions. [2020-12-22 05:57:57,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:57:57,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-12-22 05:57:57,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:57,239 INFO L225 Difference]: With dead ends: 137848 [2020-12-22 05:57:57,239 INFO L226 Difference]: Without dead ends: 83343 [2020-12-22 05:57:57,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:57:57,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83343 states. [2020-12-22 05:58:00,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83343 to 55607. [2020-12-22 05:58:00,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55607 states. [2020-12-22 05:58:00,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55607 states to 55607 states and 99991 transitions. [2020-12-22 05:58:00,419 INFO L78 Accepts]: Start accepts. Automaton has 55607 states and 99991 transitions. Word has length 100 [2020-12-22 05:58:00,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:00,419 INFO L481 AbstractCegarLoop]: Abstraction has 55607 states and 99991 transitions. [2020-12-22 05:58:00,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:58:00,419 INFO L276 IsEmpty]: Start isEmpty. Operand 55607 states and 99991 transitions. [2020-12-22 05:58:00,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 05:58:00,423 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:00,423 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] [2020-12-22 05:58:00,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 05:58:00,424 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 05:58:00,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:00,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1345991806, now seen corresponding path program 1 times [2020-12-22 05:58:00,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:00,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023011227] [2020-12-22 05:58:00,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:00,492 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 05:58:00,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023011227] [2020-12-22 05:58:00,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:00,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:00,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310045586] [2020-12-22 05:58:00,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:00,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:00,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:00,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:00,494 INFO L87 Difference]: Start difference. First operand 55607 states and 99991 transitions. Second operand 4 states. [2020-12-22 05:58:07,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:07,435 INFO L93 Difference]: Finished difference Result 130947 states and 234963 transitions. [2020-12-22 05:58:07,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:07,436 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-12-22 05:58:07,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:07,536 INFO L225 Difference]: With dead ends: 130947 [2020-12-22 05:58:07,537 INFO L226 Difference]: Without dead ends: 75389 [2020-12-22 05:58:07,580 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 05:58:07,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75389 states. [2020-12-22 05:58:09,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75389 to 37753. [2020-12-22 05:58:09,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37753 states. [2020-12-22 05:58:10,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37753 states to 37753 states and 67640 transitions. [2020-12-22 05:58:10,055 INFO L78 Accepts]: Start accepts. Automaton has 37753 states and 67640 transitions. Word has length 101 [2020-12-22 05:58:10,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:10,055 INFO L481 AbstractCegarLoop]: Abstraction has 37753 states and 67640 transitions. [2020-12-22 05:58:10,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:10,055 INFO L276 IsEmpty]: Start isEmpty. Operand 37753 states and 67640 transitions. [2020-12-22 05:58:10,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 05:58:10,063 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:10,064 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] [2020-12-22 05:58:10,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 05:58:10,064 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 05:58:10,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:10,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1870067011, now seen corresponding path program 1 times [2020-12-22 05:58:10,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:10,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578648993] [2020-12-22 05:58:10,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:10,172 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 05:58:10,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578648993] [2020-12-22 05:58:10,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:10,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:58:10,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872364205] [2020-12-22 05:58:10,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:58:10,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:10,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:58:10,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:58:10,174 INFO L87 Difference]: Start difference. First operand 37753 states and 67640 transitions. Second operand 7 states. [2020-12-22 05:58:44,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:44,753 INFO L93 Difference]: Finished difference Result 238680 states and 425491 transitions. [2020-12-22 05:58:44,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 05:58:44,753 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-12-22 05:58:44,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:45,335 INFO L225 Difference]: With dead ends: 238680 [2020-12-22 05:58:45,335 INFO L226 Difference]: Without dead ends: 202393 [2020-12-22 05:58:45,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2020-12-22 05:58:45,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202393 states. [2020-12-22 05:58:51,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202393 to 67210. [2020-12-22 05:58:51,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67210 states. [2020-12-22 05:58:51,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67210 states to 67210 states and 121484 transitions. [2020-12-22 05:58:51,837 INFO L78 Accepts]: Start accepts. Automaton has 67210 states and 121484 transitions. Word has length 138 [2020-12-22 05:58:51,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:51,837 INFO L481 AbstractCegarLoop]: Abstraction has 67210 states and 121484 transitions. [2020-12-22 05:58:51,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:58:51,837 INFO L276 IsEmpty]: Start isEmpty. Operand 67210 states and 121484 transitions. [2020-12-22 05:58:51,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-22 05:58:51,850 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:51,850 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] [2020-12-22 05:58:51,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 05:58:51,850 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 05:58:51,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:51,851 INFO L82 PathProgramCache]: Analyzing trace with hash 368513248, now seen corresponding path program 1 times [2020-12-22 05:58:51,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:51,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016943230] [2020-12-22 05:58:51,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:51,971 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 05:58:51,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016943230] [2020-12-22 05:58:51,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:51,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 05:58:51,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912907503] [2020-12-22 05:58:51,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:58:51,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:51,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:58:51,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:58:51,973 INFO L87 Difference]: Start difference. First operand 67210 states and 121484 transitions. Second operand 8 states.