/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_spec9_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:14:18,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:14:18,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:14:18,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:14:18,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:14:18,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:14:18,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:14:18,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:14:18,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:14:18,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:14:18,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:14:18,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:14:18,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:14:18,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:14:18,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:14:18,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:14:18,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:14:18,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:14:18,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:14:18,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:14:18,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:14:18,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:14:18,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:14:18,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:14:18,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:14:18,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:14:18,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:14:18,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:14:18,740 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:14:18,797 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:14:18,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:14:18,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:14:18,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:14:18,800 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:14:18,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:14:18,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:14:18,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:14:18,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:14:18,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:14:18,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:14:18,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:14:18,801 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:14:18,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:14:18,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:14:18,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:14:18,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:14:18,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:14:18,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:14:18,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:14:18,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:14:18,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:14:18,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:14:18,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:14:18,804 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:14:18,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:14:19,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:14:19,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:14:19,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:14:19,233 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:14:19,234 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:14:19,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c [2020-12-22 06:14:19,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6d0f09f1/8edde3c94645412fbef804ba83496b06/FLAGbf41f6590 [2020-12-22 06:14:20,345 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:14:20,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c [2020-12-22 06:14:20,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6d0f09f1/8edde3c94645412fbef804ba83496b06/FLAGbf41f6590 [2020-12-22 06:14:20,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6d0f09f1/8edde3c94645412fbef804ba83496b06 [2020-12-22 06:14:20,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:14:20,894 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:14:20,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:14:20,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:14:20,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:14:20,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:14:20" (1/1) ... [2020-12-22 06:14:20,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cbbfa5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:20, skipping insertion in model container [2020-12-22 06:14:20,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:14:20" (1/1) ... [2020-12-22 06:14:20,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:14:21,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:14:21,205 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_spec9_product29.cil.c[1376,1389] [2020-12-22 06:14:21,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:14:21,673 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:14:21,689 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_spec9_product29.cil.c[1376,1389] [2020-12-22 06:14:21,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:14:21,953 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:14:21,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:21 WrapperNode [2020-12-22 06:14:21,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:14:21,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:14:21,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:14:21,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:14:21,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:21" (1/1) ... [2020-12-22 06:14:22,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:21" (1/1) ... [2020-12-22 06:14:22,325 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:14:22,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:14:22,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:14:22,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:14:22,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:21" (1/1) ... [2020-12-22 06:14:22,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:21" (1/1) ... [2020-12-22 06:14:22,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:21" (1/1) ... [2020-12-22 06:14:22,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:21" (1/1) ... [2020-12-22 06:14:22,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:21" (1/1) ... [2020-12-22 06:14:22,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:21" (1/1) ... [2020-12-22 06:14:22,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:21" (1/1) ... [2020-12-22 06:14:22,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:14:22,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:14:22,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:14:22,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:14:22,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:14:22,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:14:22,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:14:22,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:14:22,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:14:30,218 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:14:30,219 INFO L299 CfgBuilder]: Removed 809 assume(true) statements. [2020-12-22 06:14:30,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:14:30 BoogieIcfgContainer [2020-12-22 06:14:30,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:14:30,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:14:30,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:14:30,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:14:30,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:14:20" (1/3) ... [2020-12-22 06:14:30,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@352c63ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:14:30, skipping insertion in model container [2020-12-22 06:14:30,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:14:21" (2/3) ... [2020-12-22 06:14:30,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@352c63ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:14:30, skipping insertion in model container [2020-12-22 06:14:30,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:14:30" (3/3) ... [2020-12-22 06:14:30,234 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product29.cil.c [2020-12-22 06:14:30,241 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:14:30,255 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 06:14:30,275 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 06:14:30,319 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:14:30,319 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:14:30,319 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:14:30,319 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:14:30,319 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:14:30,320 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:14:30,320 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:14:30,320 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:14:30,388 INFO L276 IsEmpty]: Start isEmpty. Operand 3566 states. [2020-12-22 06:14:30,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 06:14:30,412 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:30,413 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] [2020-12-22 06:14:30,415 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:30,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:30,427 INFO L82 PathProgramCache]: Analyzing trace with hash -146225728, now seen corresponding path program 1 times [2020-12-22 06:14:30,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:30,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793894619] [2020-12-22 06:14:30,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:30,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:14:30,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793894619] [2020-12-22 06:14:30,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:30,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:14:30,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581977167] [2020-12-22 06:14:30,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:14:30,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:30,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:14:30,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:14:30,891 INFO L87 Difference]: Start difference. First operand 3566 states. Second operand 3 states. [2020-12-22 06:14:31,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:31,180 INFO L93 Difference]: Finished difference Result 7123 states and 13465 transitions. [2020-12-22 06:14:31,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:14:31,183 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-12-22 06:14:31,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:31,262 INFO L225 Difference]: With dead ends: 7123 [2020-12-22 06:14:31,262 INFO L226 Difference]: Without dead ends: 3562 [2020-12-22 06:14:31,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:14:31,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2020-12-22 06:14:31,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3562. [2020-12-22 06:14:31,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3562 states. [2020-12-22 06:14:31,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 6723 transitions. [2020-12-22 06:14:31,634 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 6723 transitions. Word has length 42 [2020-12-22 06:14:31,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:31,635 INFO L481 AbstractCegarLoop]: Abstraction has 3562 states and 6723 transitions. [2020-12-22 06:14:31,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:14:31,635 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 6723 transitions. [2020-12-22 06:14:31,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:14:31,641 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:31,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:31,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:14:31,643 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:31,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:31,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1616398097, now seen corresponding path program 1 times [2020-12-22 06:14:31,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:31,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910550007] [2020-12-22 06:14:31,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:31,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:14:31,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910550007] [2020-12-22 06:14:31,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:31,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:14:31,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624762111] [2020-12-22 06:14:31,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:14:31,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:31,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:14:31,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:14:31,911 INFO L87 Difference]: Start difference. First operand 3562 states and 6723 transitions. Second operand 4 states. [2020-12-22 06:14:32,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:32,129 INFO L93 Difference]: Finished difference Result 7075 states and 13362 transitions. [2020-12-22 06:14:32,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:14:32,130 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-12-22 06:14:32,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:32,153 INFO L225 Difference]: With dead ends: 7075 [2020-12-22 06:14:32,153 INFO L226 Difference]: Without dead ends: 3535 [2020-12-22 06:14:32,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:14:32,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2020-12-22 06:14:32,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3535. [2020-12-22 06:14:32,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3535 states. [2020-12-22 06:14:32,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 6667 transitions. [2020-12-22 06:14:32,294 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 6667 transitions. Word has length 49 [2020-12-22 06:14:32,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:32,294 INFO L481 AbstractCegarLoop]: Abstraction has 3535 states and 6667 transitions. [2020-12-22 06:14:32,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:14:32,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 6667 transitions. [2020-12-22 06:14:32,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 06:14:32,301 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:32,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:32,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:14:32,303 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:32,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:32,307 INFO L82 PathProgramCache]: Analyzing trace with hash 176969011, now seen corresponding path program 1 times [2020-12-22 06:14:32,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:32,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296355549] [2020-12-22 06:14:32,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:32,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:14:32,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296355549] [2020-12-22 06:14:32,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:32,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:14:32,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57387149] [2020-12-22 06:14:32,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:14:32,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:32,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:14:32,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:14:32,460 INFO L87 Difference]: Start difference. First operand 3535 states and 6667 transitions. Second operand 4 states. [2020-12-22 06:14:32,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:32,672 INFO L93 Difference]: Finished difference Result 7048 states and 13306 transitions. [2020-12-22 06:14:32,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:14:32,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-12-22 06:14:32,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:32,694 INFO L225 Difference]: With dead ends: 7048 [2020-12-22 06:14:32,694 INFO L226 Difference]: Without dead ends: 3535 [2020-12-22 06:14:32,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:14:32,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2020-12-22 06:14:32,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3535. [2020-12-22 06:14:32,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3535 states. [2020-12-22 06:14:32,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 6666 transitions. [2020-12-22 06:14:32,862 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 6666 transitions. Word has length 50 [2020-12-22 06:14:32,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:32,869 INFO L481 AbstractCegarLoop]: Abstraction has 3535 states and 6666 transitions. [2020-12-22 06:14:32,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:14:32,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 6666 transitions. [2020-12-22 06:14:32,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:14:32,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:32,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:32,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:14:32,876 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:32,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:32,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1746101070, now seen corresponding path program 1 times [2020-12-22 06:14:32,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:32,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072751142] [2020-12-22 06:14:32,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:32,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:14:32,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072751142] [2020-12-22 06:14:32,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:32,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:14:32,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103541050] [2020-12-22 06:14:32,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:14:32,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:32,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:14:32,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:14:32,999 INFO L87 Difference]: Start difference. First operand 3535 states and 6666 transitions. Second operand 4 states. [2020-12-22 06:14:33,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:33,213 INFO L93 Difference]: Finished difference Result 7048 states and 13305 transitions. [2020-12-22 06:14:33,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:14:33,214 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-12-22 06:14:33,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:33,236 INFO L225 Difference]: With dead ends: 7048 [2020-12-22 06:14:33,236 INFO L226 Difference]: Without dead ends: 3535 [2020-12-22 06:14:33,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:14:33,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2020-12-22 06:14:33,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3535. [2020-12-22 06:14:33,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3535 states. [2020-12-22 06:14:33,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 6665 transitions. [2020-12-22 06:14:33,552 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 6665 transitions. Word has length 51 [2020-12-22 06:14:33,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:33,552 INFO L481 AbstractCegarLoop]: Abstraction has 3535 states and 6665 transitions. [2020-12-22 06:14:33,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:14:33,553 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 6665 transitions. [2020-12-22 06:14:33,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 06:14:33,556 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:33,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:33,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:14:33,560 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:33,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:33,561 INFO L82 PathProgramCache]: Analyzing trace with hash -317919954, now seen corresponding path program 1 times [2020-12-22 06:14:33,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:33,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544448201] [2020-12-22 06:14:33,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:33,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:14:33,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544448201] [2020-12-22 06:14:33,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:33,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:14:33,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055728986] [2020-12-22 06:14:33,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:14:33,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:33,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:14:33,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:14:33,661 INFO L87 Difference]: Start difference. First operand 3535 states and 6665 transitions. Second operand 4 states. [2020-12-22 06:14:33,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:33,857 INFO L93 Difference]: Finished difference Result 7048 states and 13304 transitions. [2020-12-22 06:14:33,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:14:33,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 06:14:33,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:33,881 INFO L225 Difference]: With dead ends: 7048 [2020-12-22 06:14:33,882 INFO L226 Difference]: Without dead ends: 3535 [2020-12-22 06:14:33,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:14:33,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2020-12-22 06:14:34,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3535. [2020-12-22 06:14:34,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3535 states. [2020-12-22 06:14:34,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 6664 transitions. [2020-12-22 06:14:34,033 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 6664 transitions. Word has length 52 [2020-12-22 06:14:34,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:34,034 INFO L481 AbstractCegarLoop]: Abstraction has 3535 states and 6664 transitions. [2020-12-22 06:14:34,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:14:34,034 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 6664 transitions. [2020-12-22 06:14:34,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 06:14:34,038 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:34,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:34,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:14:34,038 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:34,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:34,039 INFO L82 PathProgramCache]: Analyzing trace with hash 954430441, now seen corresponding path program 1 times [2020-12-22 06:14:34,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:34,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692190176] [2020-12-22 06:14:34,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:34,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:14:34,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692190176] [2020-12-22 06:14:34,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:34,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:14:34,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585137570] [2020-12-22 06:14:34,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:14:34,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:34,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:14:34,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:14:34,105 INFO L87 Difference]: Start difference. First operand 3535 states and 6664 transitions. Second operand 4 states. [2020-12-22 06:14:34,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:34,294 INFO L93 Difference]: Finished difference Result 7048 states and 13303 transitions. [2020-12-22 06:14:34,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:14:34,295 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-12-22 06:14:34,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:34,316 INFO L225 Difference]: With dead ends: 7048 [2020-12-22 06:14:34,317 INFO L226 Difference]: Without dead ends: 3535 [2020-12-22 06:14:34,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:14:34,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2020-12-22 06:14:34,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3535. [2020-12-22 06:14:34,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3535 states. [2020-12-22 06:14:34,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 6663 transitions. [2020-12-22 06:14:34,481 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 6663 transitions. Word has length 53 [2020-12-22 06:14:34,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:34,481 INFO L481 AbstractCegarLoop]: Abstraction has 3535 states and 6663 transitions. [2020-12-22 06:14:34,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:14:34,481 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 6663 transitions. [2020-12-22 06:14:34,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:14:34,485 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:34,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:34,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:14:34,486 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:34,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:34,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1719887575, now seen corresponding path program 1 times [2020-12-22 06:14:34,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:34,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382649813] [2020-12-22 06:14:34,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:34,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:14:34,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382649813] [2020-12-22 06:14:34,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:34,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:14:34,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658378992] [2020-12-22 06:14:34,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:14:34,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:34,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:14:34,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:14:34,592 INFO L87 Difference]: Start difference. First operand 3535 states and 6663 transitions. Second operand 4 states. [2020-12-22 06:14:34,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:34,774 INFO L93 Difference]: Finished difference Result 7048 states and 13302 transitions. [2020-12-22 06:14:34,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:14:34,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 06:14:34,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:34,813 INFO L225 Difference]: With dead ends: 7048 [2020-12-22 06:14:34,813 INFO L226 Difference]: Without dead ends: 3535 [2020-12-22 06:14:34,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:14:34,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2020-12-22 06:14:35,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3535. [2020-12-22 06:14:35,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3535 states. [2020-12-22 06:14:35,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 6662 transitions. [2020-12-22 06:14:35,040 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 6662 transitions. Word has length 54 [2020-12-22 06:14:35,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:35,040 INFO L481 AbstractCegarLoop]: Abstraction has 3535 states and 6662 transitions. [2020-12-22 06:14:35,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:14:35,041 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 6662 transitions. [2020-12-22 06:14:35,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:14:35,045 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:35,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:35,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:14:35,046 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:35,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:35,046 INFO L82 PathProgramCache]: Analyzing trace with hash 2108092548, now seen corresponding path program 1 times [2020-12-22 06:14:35,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:35,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925415099] [2020-12-22 06:14:35,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:35,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:14:35,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925415099] [2020-12-22 06:14:35,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:35,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:14:35,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226956969] [2020-12-22 06:14:35,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:14:35,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:35,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:14:35,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:14:35,155 INFO L87 Difference]: Start difference. First operand 3535 states and 6662 transitions. Second operand 4 states. [2020-12-22 06:14:35,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:35,378 INFO L93 Difference]: Finished difference Result 7042 states and 13290 transitions. [2020-12-22 06:14:35,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:14:35,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-12-22 06:14:35,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:35,392 INFO L225 Difference]: With dead ends: 7042 [2020-12-22 06:14:35,392 INFO L226 Difference]: Without dead ends: 3535 [2020-12-22 06:14:35,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:14:35,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2020-12-22 06:14:35,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 3535. [2020-12-22 06:14:35,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3535 states. [2020-12-22 06:14:35,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 6661 transitions. [2020-12-22 06:14:35,584 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 6661 transitions. Word has length 55 [2020-12-22 06:14:35,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:35,585 INFO L481 AbstractCegarLoop]: Abstraction has 3535 states and 6661 transitions. [2020-12-22 06:14:35,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:14:35,586 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 6661 transitions. [2020-12-22 06:14:35,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:14:35,592 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:35,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:35,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:14:35,593 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:35,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:35,594 INFO L82 PathProgramCache]: Analyzing trace with hash -461174188, now seen corresponding path program 1 times [2020-12-22 06:14:35,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:35,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479032549] [2020-12-22 06:14:35,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:35,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:14:35,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479032549] [2020-12-22 06:14:35,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:35,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:14:35,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983097475] [2020-12-22 06:14:35,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:14:35,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:35,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:14:35,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:14:35,717 INFO L87 Difference]: Start difference. First operand 3535 states and 6661 transitions. Second operand 3 states. [2020-12-22 06:14:36,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:36,176 INFO L93 Difference]: Finished difference Result 8487 states and 16016 transitions. [2020-12-22 06:14:36,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:14:36,177 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 06:14:36,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:36,197 INFO L225 Difference]: With dead ends: 8487 [2020-12-22 06:14:36,197 INFO L226 Difference]: Without dead ends: 5895 [2020-12-22 06:14:36,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:14:36,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5895 states. [2020-12-22 06:14:36,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5895 to 5880. [2020-12-22 06:14:36,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5880 states. [2020-12-22 06:14:36,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5880 states to 5880 states and 11081 transitions. [2020-12-22 06:14:36,501 INFO L78 Accepts]: Start accepts. Automaton has 5880 states and 11081 transitions. Word has length 56 [2020-12-22 06:14:36,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:36,506 INFO L481 AbstractCegarLoop]: Abstraction has 5880 states and 11081 transitions. [2020-12-22 06:14:36,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:14:36,506 INFO L276 IsEmpty]: Start isEmpty. Operand 5880 states and 11081 transitions. [2020-12-22 06:14:36,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 06:14:36,510 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:36,510 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] [2020-12-22 06:14:36,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:14:36,511 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:36,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:36,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1706061527, now seen corresponding path program 1 times [2020-12-22 06:14:36,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:36,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416160247] [2020-12-22 06:14:36,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:14:36,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416160247] [2020-12-22 06:14:36,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:36,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:14:36,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378290807] [2020-12-22 06:14:36,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:14:36,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:36,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:14:36,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:14:36,608 INFO L87 Difference]: Start difference. First operand 5880 states and 11081 transitions. Second operand 3 states. [2020-12-22 06:14:37,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:37,143 INFO L93 Difference]: Finished difference Result 14804 states and 27918 transitions. [2020-12-22 06:14:37,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:14:37,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-12-22 06:14:37,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:37,175 INFO L225 Difference]: With dead ends: 14804 [2020-12-22 06:14:37,175 INFO L226 Difference]: Without dead ends: 10482 [2020-12-22 06:14:37,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:14:37,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10482 states. [2020-12-22 06:14:37,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10482 to 10467. [2020-12-22 06:14:37,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10467 states. [2020-12-22 06:14:37,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10467 states to 10467 states and 19725 transitions. [2020-12-22 06:14:37,693 INFO L78 Accepts]: Start accepts. Automaton has 10467 states and 19725 transitions. Word has length 57 [2020-12-22 06:14:37,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:37,694 INFO L481 AbstractCegarLoop]: Abstraction has 10467 states and 19725 transitions. [2020-12-22 06:14:37,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:14:37,694 INFO L276 IsEmpty]: Start isEmpty. Operand 10467 states and 19725 transitions. [2020-12-22 06:14:37,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 06:14:37,698 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:37,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:37,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:14:37,698 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:37,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:37,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1429454897, now seen corresponding path program 1 times [2020-12-22 06:14:37,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:37,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801932389] [2020-12-22 06:14:37,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:37,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:14:37,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801932389] [2020-12-22 06:14:37,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:37,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:14:37,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984472044] [2020-12-22 06:14:37,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:14:37,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:37,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:14:37,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:14:37,765 INFO L87 Difference]: Start difference. First operand 10467 states and 19725 transitions. Second operand 3 states. [2020-12-22 06:14:38,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:38,351 INFO L93 Difference]: Finished difference Result 27232 states and 51317 transitions. [2020-12-22 06:14:38,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:14:38,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-12-22 06:14:38,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:38,405 INFO L225 Difference]: With dead ends: 27232 [2020-12-22 06:14:38,405 INFO L226 Difference]: Without dead ends: 19440 [2020-12-22 06:14:38,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:14:38,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19440 states. [2020-12-22 06:14:39,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19440 to 19425. [2020-12-22 06:14:39,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19425 states. [2020-12-22 06:14:39,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19425 states to 19425 states and 36588 transitions. [2020-12-22 06:14:39,139 INFO L78 Accepts]: Start accepts. Automaton has 19425 states and 36588 transitions. Word has length 58 [2020-12-22 06:14:39,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:39,139 INFO L481 AbstractCegarLoop]: Abstraction has 19425 states and 36588 transitions. [2020-12-22 06:14:39,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:14:39,139 INFO L276 IsEmpty]: Start isEmpty. Operand 19425 states and 36588 transitions. [2020-12-22 06:14:39,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 06:14:39,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:39,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:39,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:14:39,147 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:39,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:39,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1446563086, now seen corresponding path program 1 times [2020-12-22 06:14:39,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:39,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534760157] [2020-12-22 06:14:39,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:39,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:14:39,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534760157] [2020-12-22 06:14:39,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:39,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:14:39,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027728351] [2020-12-22 06:14:39,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:14:39,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:39,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:14:39,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:14:39,225 INFO L87 Difference]: Start difference. First operand 19425 states and 36588 transitions. Second operand 3 states. [2020-12-22 06:14:40,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:40,239 INFO L93 Difference]: Finished difference Result 51656 states and 97240 transitions. [2020-12-22 06:14:40,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:14:40,240 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-12-22 06:14:40,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:40,340 INFO L225 Difference]: With dead ends: 51656 [2020-12-22 06:14:40,340 INFO L226 Difference]: Without dead ends: 36914 [2020-12-22 06:14:40,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:14:40,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36914 states. [2020-12-22 06:14:41,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36914 to 36899. [2020-12-22 06:14:41,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36899 states. [2020-12-22 06:14:41,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36899 states to 36899 states and 69431 transitions. [2020-12-22 06:14:41,876 INFO L78 Accepts]: Start accepts. Automaton has 36899 states and 69431 transitions. Word has length 59 [2020-12-22 06:14:41,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:41,876 INFO L481 AbstractCegarLoop]: Abstraction has 36899 states and 69431 transitions. [2020-12-22 06:14:41,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:14:41,877 INFO L276 IsEmpty]: Start isEmpty. Operand 36899 states and 69431 transitions. [2020-12-22 06:14:41,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:14:41,883 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:41,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:41,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:14:41,884 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:41,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:41,885 INFO L82 PathProgramCache]: Analyzing trace with hash 717703498, now seen corresponding path program 1 times [2020-12-22 06:14:41,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:41,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879800503] [2020-12-22 06:14:41,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:42,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:14:42,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879800503] [2020-12-22 06:14:42,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:42,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:14:42,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669521651] [2020-12-22 06:14:42,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:14:42,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:42,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:14:42,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:14:42,032 INFO L87 Difference]: Start difference. First operand 36899 states and 69431 transitions. Second operand 3 states. [2020-12-22 06:14:43,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:43,960 INFO L93 Difference]: Finished difference Result 99620 states and 187271 transitions. [2020-12-22 06:14:43,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:14:43,961 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-12-22 06:14:43,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:44,197 INFO L225 Difference]: With dead ends: 99620 [2020-12-22 06:14:44,198 INFO L226 Difference]: Without dead ends: 70968 [2020-12-22 06:14:44,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:14:44,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70968 states. [2020-12-22 06:14:47,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70968 to 70953. [2020-12-22 06:14:47,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70953 states. [2020-12-22 06:14:47,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70953 states to 70953 states and 133318 transitions. [2020-12-22 06:14:47,238 INFO L78 Accepts]: Start accepts. Automaton has 70953 states and 133318 transitions. Word has length 60 [2020-12-22 06:14:47,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:47,239 INFO L481 AbstractCegarLoop]: Abstraction has 70953 states and 133318 transitions. [2020-12-22 06:14:47,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:14:47,239 INFO L276 IsEmpty]: Start isEmpty. Operand 70953 states and 133318 transitions. [2020-12-22 06:14:47,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:14:47,243 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:47,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:47,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:14:47,244 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:47,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:47,245 INFO L82 PathProgramCache]: Analyzing trace with hash 936558216, now seen corresponding path program 1 times [2020-12-22 06:14:47,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:47,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558823504] [2020-12-22 06:14:47,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:47,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:14:47,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558823504] [2020-12-22 06:14:47,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:47,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:14:47,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492390640] [2020-12-22 06:14:47,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:14:47,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:47,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:14:47,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:14:47,339 INFO L87 Difference]: Start difference. First operand 70953 states and 133318 transitions. Second operand 5 states. [2020-12-22 06:14:50,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:50,606 INFO L93 Difference]: Finished difference Result 161511 states and 302480 transitions. [2020-12-22 06:14:50,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:14:50,607 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-12-22 06:14:50,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:50,809 INFO L225 Difference]: With dead ends: 161511 [2020-12-22 06:14:50,809 INFO L226 Difference]: Without dead ends: 105808 [2020-12-22 06:14:50,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:14:50,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105808 states. [2020-12-22 06:14:53,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105808 to 71118. [2020-12-22 06:14:53,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71118 states. [2020-12-22 06:14:53,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71118 states to 71118 states and 133483 transitions. [2020-12-22 06:14:53,571 INFO L78 Accepts]: Start accepts. Automaton has 71118 states and 133483 transitions. Word has length 60 [2020-12-22 06:14:53,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:53,572 INFO L481 AbstractCegarLoop]: Abstraction has 71118 states and 133483 transitions. [2020-12-22 06:14:53,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:14:53,572 INFO L276 IsEmpty]: Start isEmpty. Operand 71118 states and 133483 transitions. [2020-12-22 06:14:53,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 06:14:53,589 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:53,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:53,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:14:53,590 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:53,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:53,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1837683710, now seen corresponding path program 1 times [2020-12-22 06:14:53,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:53,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17703598] [2020-12-22 06:14:53,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:53,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:14:53,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17703598] [2020-12-22 06:14:53,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:53,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:14:53,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316972206] [2020-12-22 06:14:53,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:14:53,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:53,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:14:53,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:14:53,688 INFO L87 Difference]: Start difference. First operand 71118 states and 133483 transitions. Second operand 3 states. [2020-12-22 06:14:57,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:57,132 INFO L93 Difference]: Finished difference Result 169745 states and 317958 transitions. [2020-12-22 06:14:57,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:14:57,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 06:14:57,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:57,383 INFO L225 Difference]: With dead ends: 169745 [2020-12-22 06:14:57,383 INFO L226 Difference]: Without dead ends: 113116 [2020-12-22 06:14:57,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:14:57,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113116 states. [2020-12-22 06:15:00,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113116 to 112813. [2020-12-22 06:15:00,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112813 states. [2020-12-22 06:15:00,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112813 states to 112813 states and 209292 transitions. [2020-12-22 06:15:00,850 INFO L78 Accepts]: Start accepts. Automaton has 112813 states and 209292 transitions. Word has length 65 [2020-12-22 06:15:00,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:15:00,851 INFO L481 AbstractCegarLoop]: Abstraction has 112813 states and 209292 transitions. [2020-12-22 06:15:00,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:15:00,851 INFO L276 IsEmpty]: Start isEmpty. Operand 112813 states and 209292 transitions. [2020-12-22 06:15:00,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:15:00,855 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:15:00,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:15:00,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:15:00,856 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:15:00,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:15:00,857 INFO L82 PathProgramCache]: Analyzing trace with hash 26322933, now seen corresponding path program 1 times [2020-12-22 06:15:00,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:15:00,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885361487] [2020-12-22 06:15:00,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:15:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:15:00,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:15:00,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885361487] [2020-12-22 06:15:00,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:15:00,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:15:00,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930152692] [2020-12-22 06:15:00,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:15:00,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:15:00,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:15:00,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:15:00,944 INFO L87 Difference]: Start difference. First operand 112813 states and 209292 transitions. Second operand 5 states. [2020-12-22 06:15:07,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:15:07,211 INFO L93 Difference]: Finished difference Result 304501 states and 563867 transitions. [2020-12-22 06:15:07,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:15:07,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-22 06:15:07,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:15:07,856 INFO L225 Difference]: With dead ends: 304501 [2020-12-22 06:15:07,856 INFO L226 Difference]: Without dead ends: 206224 [2020-12-22 06:15:07,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:15:08,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206224 states. [2020-12-22 06:15:11,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206224 to 112813. [2020-12-22 06:15:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112813 states. [2020-12-22 06:15:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112813 states to 112813 states and 206904 transitions. [2020-12-22 06:15:12,203 INFO L78 Accepts]: Start accepts. Automaton has 112813 states and 206904 transitions. Word has length 68 [2020-12-22 06:15:12,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:15:12,203 INFO L481 AbstractCegarLoop]: Abstraction has 112813 states and 206904 transitions. [2020-12-22 06:15:12,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:15:12,203 INFO L276 IsEmpty]: Start isEmpty. Operand 112813 states and 206904 transitions. [2020-12-22 06:15:12,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:15:12,213 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:15:12,213 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] [2020-12-22 06:15:12,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:15:12,214 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:15:12,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:15:12,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1330246600, now seen corresponding path program 1 times [2020-12-22 06:15:12,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:15:12,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548200981] [2020-12-22 06:15:12,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:15:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:15:12,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:15:12,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548200981] [2020-12-22 06:15:12,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:15:12,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:15:12,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245360599] [2020-12-22 06:15:12,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:15:12,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:15:12,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:15:12,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:15:12,298 INFO L87 Difference]: Start difference. First operand 112813 states and 206904 transitions. Second operand 5 states. [2020-12-22 06:15:18,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:15:18,710 INFO L93 Difference]: Finished difference Result 317252 states and 584513 transitions. [2020-12-22 06:15:18,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:15:18,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-12-22 06:15:18,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:15:19,267 INFO L225 Difference]: With dead ends: 317252 [2020-12-22 06:15:19,268 INFO L226 Difference]: Without dead ends: 255149 [2020-12-22 06:15:19,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:15:19,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255149 states. [2020-12-22 06:15:25,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255149 to 162028. [2020-12-22 06:15:25,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162028 states. [2020-12-22 06:15:25,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162028 states to 162028 states and 296278 transitions. [2020-12-22 06:15:25,912 INFO L78 Accepts]: Start accepts. Automaton has 162028 states and 296278 transitions. Word has length 69 [2020-12-22 06:15:25,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:15:25,912 INFO L481 AbstractCegarLoop]: Abstraction has 162028 states and 296278 transitions. [2020-12-22 06:15:25,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:15:25,913 INFO L276 IsEmpty]: Start isEmpty. Operand 162028 states and 296278 transitions. [2020-12-22 06:15:25,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 06:15:25,917 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:15:25,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:15:25,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:15:25,918 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:15:25,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:15:25,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1382756401, now seen corresponding path program 1 times [2020-12-22 06:15:25,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:15:25,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153637489] [2020-12-22 06:15:25,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:15:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:15:26,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:15:26,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153637489] [2020-12-22 06:15:26,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:15:26,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:15:26,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090637828] [2020-12-22 06:15:26,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:15:26,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:15:26,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:15:26,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:15:26,056 INFO L87 Difference]: Start difference. First operand 162028 states and 296278 transitions. Second operand 5 states. [2020-12-22 06:15:30,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:15:30,975 INFO L93 Difference]: Finished difference Result 286517 states and 522883 transitions. [2020-12-22 06:15:30,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:15:30,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-12-22 06:15:30,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:15:31,361 INFO L225 Difference]: With dead ends: 286517 [2020-12-22 06:15:31,361 INFO L226 Difference]: Without dead ends: 180889 [2020-12-22 06:15:31,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:15:31,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180889 states. [2020-12-22 06:15:36,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180889 to 180586. [2020-12-22 06:15:36,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180586 states. [2020-12-22 06:15:37,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180586 states to 180586 states and 329120 transitions. [2020-12-22 06:15:37,328 INFO L78 Accepts]: Start accepts. Automaton has 180586 states and 329120 transitions. Word has length 70 [2020-12-22 06:15:37,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:15:37,328 INFO L481 AbstractCegarLoop]: Abstraction has 180586 states and 329120 transitions. [2020-12-22 06:15:37,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:15:37,328 INFO L276 IsEmpty]: Start isEmpty. Operand 180586 states and 329120 transitions. [2020-12-22 06:15:37,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 06:15:37,332 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:15:37,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:15:37,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:15:37,332 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:15:37,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:15:37,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1124590963, now seen corresponding path program 1 times [2020-12-22 06:15:37,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:15:37,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93746993] [2020-12-22 06:15:37,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:15:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:15:37,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:15:37,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93746993] [2020-12-22 06:15:37,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:15:37,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:15:37,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171629924] [2020-12-22 06:15:37,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:15:37,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:15:37,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:15:37,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:15:37,442 INFO L87 Difference]: Start difference. First operand 180586 states and 329120 transitions. Second operand 6 states. [2020-12-22 06:15:56,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:15:56,030 INFO L93 Difference]: Finished difference Result 864634 states and 1573135 transitions. [2020-12-22 06:15:56,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:15:56,030 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-12-22 06:15:56,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:15:58,099 INFO L225 Difference]: With dead ends: 864634 [2020-12-22 06:15:58,100 INFO L226 Difference]: Without dead ends: 684493 [2020-12-22 06:15:58,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:15:58,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684493 states. [2020-12-22 06:16:16,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684493 to 521760. [2020-12-22 06:16:16,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521760 states. [2020-12-22 06:16:18,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521760 states to 521760 states and 947766 transitions. [2020-12-22 06:16:18,083 INFO L78 Accepts]: Start accepts. Automaton has 521760 states and 947766 transitions. Word has length 70 [2020-12-22 06:16:18,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:16:18,084 INFO L481 AbstractCegarLoop]: Abstraction has 521760 states and 947766 transitions. [2020-12-22 06:16:18,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:16:18,084 INFO L276 IsEmpty]: Start isEmpty. Operand 521760 states and 947766 transitions. [2020-12-22 06:16:18,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:16:18,089 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:16:18,090 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 06:16:18,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:16:18,090 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:16:18,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:16:18,091 INFO L82 PathProgramCache]: Analyzing trace with hash -2031154122, now seen corresponding path program 1 times [2020-12-22 06:16:18,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:16:18,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699638916] [2020-12-22 06:16:18,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:16:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:16:18,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:16:18,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699638916] [2020-12-22 06:16:18,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:16:18,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:16:18,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798821024] [2020-12-22 06:16:18,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:16:18,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:16:18,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:16:18,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:16:18,871 INFO L87 Difference]: Start difference. First operand 521760 states and 947766 transitions. Second operand 6 states. [2020-12-22 06:17:14,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:17:14,818 INFO L93 Difference]: Finished difference Result 2530990 states and 4591544 transitions. [2020-12-22 06:17:14,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:17:14,819 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-12-22 06:17:14,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:17:24,141 INFO L225 Difference]: With dead ends: 2530990 [2020-12-22 06:17:24,141 INFO L226 Difference]: Without dead ends: 2009676 [2020-12-22 06:17:25,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:17:27,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009676 states.