/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_spec2_product03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:03:02,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:03:02,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:03:02,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:03:02,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:03:02,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:03:02,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:03:02,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:03:02,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:03:02,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:03:02,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:03:02,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:03:02,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:03:02,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:03:02,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:03:02,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:03:02,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:03:02,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:03:02,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:03:02,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:03:02,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:03:02,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:03:02,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:03:02,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:03:02,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:03:02,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:03:02,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:03:02,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:03:02,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:03:02,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:03:02,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:03:02,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:03:02,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:03:02,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:03:02,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:03:02,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:03:02,690 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:03:02,734 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:03:02,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:03:02,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:03:02,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:03:02,736 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:03:02,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:03:02,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:03:02,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:03:02,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:03:02,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:03:02,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:03:02,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:03:02,738 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:03:02,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:03:02,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:03:02,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:03:02,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:03:02,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:03:02,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:03:02,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:03:02,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:03:02,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:03:02,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:03:02,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:03:02,741 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:03:02,741 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:03:03,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:03:03,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:03:03,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:03:03,163 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:03:03,164 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:03:03,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c [2020-12-22 06:03:03,258 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c69cfd92e/e4ef53cb8539413b957715a4424a5843/FLAGeedc22cf7 [2020-12-22 06:03:04,122 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:03:04,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c [2020-12-22 06:03:04,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c69cfd92e/e4ef53cb8539413b957715a4424a5843/FLAGeedc22cf7 [2020-12-22 06:03:04,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c69cfd92e/e4ef53cb8539413b957715a4424a5843 [2020-12-22 06:03:04,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:03:04,311 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:03:04,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:03:04,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:03:04,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:03:04,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:03:04" (1/1) ... [2020-12-22 06:03:04,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@238d49ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:04, skipping insertion in model container [2020-12-22 06:03:04,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:03:04" (1/1) ... [2020-12-22 06:03:04,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:03:04,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:03:04,784 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_spec2_product03.cil.c[29504,29517] [2020-12-22 06:03:05,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:03:05,136 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:03:05,245 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_spec2_product03.cil.c[29504,29517] [2020-12-22 06:03:05,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:03:05,467 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:03:05,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:05 WrapperNode [2020-12-22 06:03:05,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:03:05,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:03:05,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:03:05,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:03:05,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:05" (1/1) ... [2020-12-22 06:03:05,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:05" (1/1) ... [2020-12-22 06:03:05,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:03:05,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:03:05,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:03:05,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:03:05,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:05" (1/1) ... [2020-12-22 06:03:05,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:05" (1/1) ... [2020-12-22 06:03:05,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:05" (1/1) ... [2020-12-22 06:03:05,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:05" (1/1) ... [2020-12-22 06:03:05,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:05" (1/1) ... [2020-12-22 06:03:05,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:05" (1/1) ... [2020-12-22 06:03:05,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:05" (1/1) ... [2020-12-22 06:03:05,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:03:05,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:03:05,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:03:05,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:03:05,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:05" (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 06:03:06,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:03:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:03:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:03:06,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:03:11,473 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:03:11,473 INFO L299 CfgBuilder]: Removed 517 assume(true) statements. [2020-12-22 06:03:11,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:03:11 BoogieIcfgContainer [2020-12-22 06:03:11,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:03:11,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:03:11,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:03:11,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:03:11,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:03:04" (1/3) ... [2020-12-22 06:03:11,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e1085ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:03:11, skipping insertion in model container [2020-12-22 06:03:11,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:05" (2/3) ... [2020-12-22 06:03:11,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e1085ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:03:11, skipping insertion in model container [2020-12-22 06:03:11,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:03:11" (3/3) ... [2020-12-22 06:03:11,489 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product03.cil.c [2020-12-22 06:03:11,496 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:03:11,503 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 06:03:11,525 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 06:03:11,565 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:03:11,565 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:03:11,566 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:03:11,566 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:03:11,566 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:03:11,566 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:03:11,566 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:03:11,566 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:03:11,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states. [2020-12-22 06:03:11,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 06:03:11,634 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:11,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:11,636 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 06:03:11,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:11,643 INFO L82 PathProgramCache]: Analyzing trace with hash 245285468, now seen corresponding path program 1 times [2020-12-22 06:03:11,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:11,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69203219] [2020-12-22 06:03:11,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:12,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69203219] [2020-12-22 06:03:12,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:12,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:12,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492257560] [2020-12-22 06:03:12,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:12,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:12,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:12,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:12,179 INFO L87 Difference]: Start difference. First operand 2304 states. Second operand 3 states. [2020-12-22 06:03:12,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:12,378 INFO L93 Difference]: Finished difference Result 4599 states and 8709 transitions. [2020-12-22 06:03:12,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:12,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 06:03:12,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:12,424 INFO L225 Difference]: With dead ends: 4599 [2020-12-22 06:03:12,424 INFO L226 Difference]: Without dead ends: 2300 [2020-12-22 06:03:12,438 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 06:03:12,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2020-12-22 06:03:12,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 2300. [2020-12-22 06:03:12,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2300 states. [2020-12-22 06:03:12,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 4345 transitions. [2020-12-22 06:03:12,618 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 4345 transitions. Word has length 44 [2020-12-22 06:03:12,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:12,619 INFO L481 AbstractCegarLoop]: Abstraction has 2300 states and 4345 transitions. [2020-12-22 06:03:12,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:12,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 4345 transitions. [2020-12-22 06:03:12,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:03:12,623 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:12,623 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 06:03:12,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:03:12,624 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 06:03:12,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:12,625 INFO L82 PathProgramCache]: Analyzing trace with hash 895862581, now seen corresponding path program 1 times [2020-12-22 06:03:12,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:12,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090819779] [2020-12-22 06:03:12,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:12,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:12,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090819779] [2020-12-22 06:03:12,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:12,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:12,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72744529] [2020-12-22 06:03:12,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:12,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:12,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:12,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:12,802 INFO L87 Difference]: Start difference. First operand 2300 states and 4345 transitions. Second operand 4 states. [2020-12-22 06:03:13,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:13,009 INFO L93 Difference]: Finished difference Result 4551 states and 8606 transitions. [2020-12-22 06:03:13,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:13,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-12-22 06:03:13,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:13,032 INFO L225 Difference]: With dead ends: 4551 [2020-12-22 06:03:13,032 INFO L226 Difference]: Without dead ends: 2273 [2020-12-22 06:03:13,039 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 06:03:13,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2020-12-22 06:03:13,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 2273. [2020-12-22 06:03:13,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2273 states. [2020-12-22 06:03:13,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 4289 transitions. [2020-12-22 06:03:13,162 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 4289 transitions. Word has length 51 [2020-12-22 06:03:13,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:13,163 INFO L481 AbstractCegarLoop]: Abstraction has 2273 states and 4289 transitions. [2020-12-22 06:03:13,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:13,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 4289 transitions. [2020-12-22 06:03:13,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 06:03:13,168 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:13,169 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 06:03:13,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:03:13,172 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 06:03:13,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:13,177 INFO L82 PathProgramCache]: Analyzing trace with hash 583980247, now seen corresponding path program 1 times [2020-12-22 06:03:13,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:13,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294323173] [2020-12-22 06:03:13,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:13,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:13,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294323173] [2020-12-22 06:03:13,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:13,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:13,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915494131] [2020-12-22 06:03:13,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:13,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:13,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:13,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:13,360 INFO L87 Difference]: Start difference. First operand 2273 states and 4289 transitions. Second operand 4 states. [2020-12-22 06:03:13,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:13,530 INFO L93 Difference]: Finished difference Result 4524 states and 8550 transitions. [2020-12-22 06:03:13,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:13,533 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 06:03:13,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:13,549 INFO L225 Difference]: With dead ends: 4524 [2020-12-22 06:03:13,549 INFO L226 Difference]: Without dead ends: 2273 [2020-12-22 06:03:13,555 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 06:03:13,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2020-12-22 06:03:13,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 2273. [2020-12-22 06:03:13,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2273 states. [2020-12-22 06:03:13,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 4288 transitions. [2020-12-22 06:03:13,657 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 4288 transitions. Word has length 52 [2020-12-22 06:03:13,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:13,665 INFO L481 AbstractCegarLoop]: Abstraction has 2273 states and 4288 transitions. [2020-12-22 06:03:13,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:13,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 4288 transitions. [2020-12-22 06:03:13,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 06:03:13,669 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:13,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:13,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:03:13,670 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 06:03:13,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:13,671 INFO L82 PathProgramCache]: Analyzing trace with hash 986368050, now seen corresponding path program 1 times [2020-12-22 06:03:13,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:13,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678152255] [2020-12-22 06:03:13,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:13,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678152255] [2020-12-22 06:03:13,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:13,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:13,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644388788] [2020-12-22 06:03:13,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:13,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:13,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:13,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:13,807 INFO L87 Difference]: Start difference. First operand 2273 states and 4288 transitions. Second operand 4 states. [2020-12-22 06:03:14,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:14,021 INFO L93 Difference]: Finished difference Result 4524 states and 8549 transitions. [2020-12-22 06:03:14,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:14,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-12-22 06:03:14,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:14,038 INFO L225 Difference]: With dead ends: 4524 [2020-12-22 06:03:14,038 INFO L226 Difference]: Without dead ends: 2273 [2020-12-22 06:03:14,042 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 06:03:14,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2020-12-22 06:03:14,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 2273. [2020-12-22 06:03:14,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2273 states. [2020-12-22 06:03:14,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 4287 transitions. [2020-12-22 06:03:14,131 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 4287 transitions. Word has length 53 [2020-12-22 06:03:14,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:14,133 INFO L481 AbstractCegarLoop]: Abstraction has 2273 states and 4287 transitions. [2020-12-22 06:03:14,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:14,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 4287 transitions. [2020-12-22 06:03:14,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:03:14,136 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:14,136 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 06:03:14,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:03:14,139 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 06:03:14,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:14,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1737054738, now seen corresponding path program 1 times [2020-12-22 06:03:14,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:14,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985286236] [2020-12-22 06:03:14,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:14,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:14,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985286236] [2020-12-22 06:03:14,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:14,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:14,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520711888] [2020-12-22 06:03:14,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:14,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:14,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:14,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:14,239 INFO L87 Difference]: Start difference. First operand 2273 states and 4287 transitions. Second operand 4 states. [2020-12-22 06:03:14,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:14,385 INFO L93 Difference]: Finished difference Result 4524 states and 8548 transitions. [2020-12-22 06:03:14,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:14,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 06:03:14,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:14,402 INFO L225 Difference]: With dead ends: 4524 [2020-12-22 06:03:14,402 INFO L226 Difference]: Without dead ends: 2273 [2020-12-22 06:03:14,406 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 06:03:14,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2020-12-22 06:03:14,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 2273. [2020-12-22 06:03:14,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2273 states. [2020-12-22 06:03:14,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 4286 transitions. [2020-12-22 06:03:14,493 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 4286 transitions. Word has length 54 [2020-12-22 06:03:14,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:14,494 INFO L481 AbstractCegarLoop]: Abstraction has 2273 states and 4286 transitions. [2020-12-22 06:03:14,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:14,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 4286 transitions. [2020-12-22 06:03:14,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:03:14,497 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:14,497 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 06:03:14,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:03:14,498 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 06:03:14,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:14,498 INFO L82 PathProgramCache]: Analyzing trace with hash 400104973, now seen corresponding path program 1 times [2020-12-22 06:03:14,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:14,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328969934] [2020-12-22 06:03:14,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:14,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:14,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328969934] [2020-12-22 06:03:14,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:14,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:14,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185945802] [2020-12-22 06:03:14,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:14,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:14,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:14,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:14,611 INFO L87 Difference]: Start difference. First operand 2273 states and 4286 transitions. Second operand 4 states. [2020-12-22 06:03:14,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:14,763 INFO L93 Difference]: Finished difference Result 4524 states and 8547 transitions. [2020-12-22 06:03:14,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:14,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-12-22 06:03:14,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:14,778 INFO L225 Difference]: With dead ends: 4524 [2020-12-22 06:03:14,778 INFO L226 Difference]: Without dead ends: 2273 [2020-12-22 06:03:14,783 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 06:03:14,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2020-12-22 06:03:14,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 2273. [2020-12-22 06:03:14,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2273 states. [2020-12-22 06:03:14,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 4285 transitions. [2020-12-22 06:03:14,873 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 4285 transitions. Word has length 55 [2020-12-22 06:03:14,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:14,873 INFO L481 AbstractCegarLoop]: Abstraction has 2273 states and 4285 transitions. [2020-12-22 06:03:14,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:14,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 4285 transitions. [2020-12-22 06:03:14,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:03:14,876 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:14,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:14,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:03:14,876 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 06:03:14,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:14,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1229065395, now seen corresponding path program 1 times [2020-12-22 06:03:14,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:14,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762890867] [2020-12-22 06:03:14,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:14,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:14,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762890867] [2020-12-22 06:03:14,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:14,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:14,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992314800] [2020-12-22 06:03:14,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:14,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:14,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:14,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:14,965 INFO L87 Difference]: Start difference. First operand 2273 states and 4285 transitions. Second operand 4 states. [2020-12-22 06:03:15,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:15,128 INFO L93 Difference]: Finished difference Result 4524 states and 8546 transitions. [2020-12-22 06:03:15,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:15,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-12-22 06:03:15,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:15,143 INFO L225 Difference]: With dead ends: 4524 [2020-12-22 06:03:15,144 INFO L226 Difference]: Without dead ends: 2273 [2020-12-22 06:03:15,149 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 06:03:15,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2020-12-22 06:03:15,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 2273. [2020-12-22 06:03:15,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2273 states. [2020-12-22 06:03:15,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 4284 transitions. [2020-12-22 06:03:15,242 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 4284 transitions. Word has length 56 [2020-12-22 06:03:15,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:15,242 INFO L481 AbstractCegarLoop]: Abstraction has 2273 states and 4284 transitions. [2020-12-22 06:03:15,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:15,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 4284 transitions. [2020-12-22 06:03:15,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 06:03:15,245 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:15,245 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 06:03:15,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:03:15,245 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 06:03:15,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:15,246 INFO L82 PathProgramCache]: Analyzing trace with hash 967827432, now seen corresponding path program 1 times [2020-12-22 06:03:15,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:15,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410318301] [2020-12-22 06:03:15,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:15,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:15,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410318301] [2020-12-22 06:03:15,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:15,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:15,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836143084] [2020-12-22 06:03:15,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:15,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:15,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:15,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:15,353 INFO L87 Difference]: Start difference. First operand 2273 states and 4284 transitions. Second operand 4 states. [2020-12-22 06:03:15,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:15,498 INFO L93 Difference]: Finished difference Result 4518 states and 8534 transitions. [2020-12-22 06:03:15,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:15,498 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-12-22 06:03:15,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:15,514 INFO L225 Difference]: With dead ends: 4518 [2020-12-22 06:03:15,514 INFO L226 Difference]: Without dead ends: 2273 [2020-12-22 06:03:15,519 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 06:03:15,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2020-12-22 06:03:15,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 2273. [2020-12-22 06:03:15,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2273 states. [2020-12-22 06:03:15,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 4283 transitions. [2020-12-22 06:03:15,622 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 4283 transitions. Word has length 57 [2020-12-22 06:03:15,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:15,622 INFO L481 AbstractCegarLoop]: Abstraction has 2273 states and 4283 transitions. [2020-12-22 06:03:15,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:15,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 4283 transitions. [2020-12-22 06:03:15,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 06:03:15,625 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:15,625 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 06:03:15,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:03:15,625 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 06:03:15,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:15,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1508689336, now seen corresponding path program 1 times [2020-12-22 06:03:15,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:15,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896205376] [2020-12-22 06:03:15,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:15,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:15,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896205376] [2020-12-22 06:03:15,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:15,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:15,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528687383] [2020-12-22 06:03:15,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:15,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:15,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:15,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:15,760 INFO L87 Difference]: Start difference. First operand 2273 states and 4283 transitions. Second operand 4 states. [2020-12-22 06:03:16,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:16,923 INFO L93 Difference]: Finished difference Result 6285 states and 11910 transitions. [2020-12-22 06:03:16,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:16,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-12-22 06:03:16,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:16,949 INFO L225 Difference]: With dead ends: 6285 [2020-12-22 06:03:16,949 INFO L226 Difference]: Without dead ends: 4046 [2020-12-22 06:03:16,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:16,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4046 states. [2020-12-22 06:03:17,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4046 to 2273. [2020-12-22 06:03:17,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2273 states. [2020-12-22 06:03:17,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 4277 transitions. [2020-12-22 06:03:17,075 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 4277 transitions. Word has length 58 [2020-12-22 06:03:17,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:17,075 INFO L481 AbstractCegarLoop]: Abstraction has 2273 states and 4277 transitions. [2020-12-22 06:03:17,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:17,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 4277 transitions. [2020-12-22 06:03:17,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:03:17,078 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:17,079 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 06:03:17,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:03:17,079 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 06:03:17,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:17,080 INFO L82 PathProgramCache]: Analyzing trace with hash 717198404, now seen corresponding path program 1 times [2020-12-22 06:03:17,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:17,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198269186] [2020-12-22 06:03:17,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:17,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:17,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198269186] [2020-12-22 06:03:17,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:17,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:17,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303235498] [2020-12-22 06:03:17,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:17,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:17,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:17,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:17,160 INFO L87 Difference]: Start difference. First operand 2273 states and 4277 transitions. Second operand 4 states. [2020-12-22 06:03:18,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:18,347 INFO L93 Difference]: Finished difference Result 6285 states and 11899 transitions. [2020-12-22 06:03:18,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:18,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-12-22 06:03:18,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:18,362 INFO L225 Difference]: With dead ends: 6285 [2020-12-22 06:03:18,363 INFO L226 Difference]: Without dead ends: 4046 [2020-12-22 06:03:18,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:18,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4046 states. [2020-12-22 06:03:18,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4046 to 2273. [2020-12-22 06:03:18,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2273 states. [2020-12-22 06:03:18,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 4271 transitions. [2020-12-22 06:03:18,503 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 4271 transitions. Word has length 60 [2020-12-22 06:03:18,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:18,504 INFO L481 AbstractCegarLoop]: Abstraction has 2273 states and 4271 transitions. [2020-12-22 06:03:18,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:18,504 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 4271 transitions. [2020-12-22 06:03:18,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 06:03:18,506 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:18,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:18,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:03:18,507 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 06:03:18,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:18,508 INFO L82 PathProgramCache]: Analyzing trace with hash 719593198, now seen corresponding path program 1 times [2020-12-22 06:03:18,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:18,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256156416] [2020-12-22 06:03:18,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:18,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:18,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256156416] [2020-12-22 06:03:18,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:18,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:18,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231442165] [2020-12-22 06:03:18,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:18,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:18,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:18,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:18,623 INFO L87 Difference]: Start difference. First operand 2273 states and 4271 transitions. Second operand 4 states. [2020-12-22 06:03:19,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:19,732 INFO L93 Difference]: Finished difference Result 6285 states and 11888 transitions. [2020-12-22 06:03:19,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:19,733 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 06:03:19,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:19,764 INFO L225 Difference]: With dead ends: 6285 [2020-12-22 06:03:19,764 INFO L226 Difference]: Without dead ends: 4046 [2020-12-22 06:03:19,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:19,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4046 states. [2020-12-22 06:03:19,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4046 to 2273. [2020-12-22 06:03:19,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2273 states. [2020-12-22 06:03:19,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 4265 transitions. [2020-12-22 06:03:19,874 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 4265 transitions. Word has length 62 [2020-12-22 06:03:19,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:19,875 INFO L481 AbstractCegarLoop]: Abstraction has 2273 states and 4265 transitions. [2020-12-22 06:03:19,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:19,875 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 4265 transitions. [2020-12-22 06:03:19,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 06:03:19,883 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:19,883 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, 1, 1, 1, 1] [2020-12-22 06:03:19,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:03:19,884 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 06:03:19,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:19,884 INFO L82 PathProgramCache]: Analyzing trace with hash 970793124, now seen corresponding path program 1 times [2020-12-22 06:03:19,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:19,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405072979] [2020-12-22 06:03:19,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:20,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:20,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405072979] [2020-12-22 06:03:20,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:20,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:20,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937444339] [2020-12-22 06:03:20,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:20,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:20,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:20,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:20,003 INFO L87 Difference]: Start difference. First operand 2273 states and 4265 transitions. Second operand 4 states. [2020-12-22 06:03:21,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:21,143 INFO L93 Difference]: Finished difference Result 6285 states and 11877 transitions. [2020-12-22 06:03:21,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:21,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-12-22 06:03:21,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:21,156 INFO L225 Difference]: With dead ends: 6285 [2020-12-22 06:03:21,156 INFO L226 Difference]: Without dead ends: 4046 [2020-12-22 06:03:21,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:21,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4046 states. [2020-12-22 06:03:21,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4046 to 2273. [2020-12-22 06:03:21,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2273 states. [2020-12-22 06:03:21,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 4259 transitions. [2020-12-22 06:03:21,274 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 4259 transitions. Word has length 64 [2020-12-22 06:03:21,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:21,274 INFO L481 AbstractCegarLoop]: Abstraction has 2273 states and 4259 transitions. [2020-12-22 06:03:21,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:21,274 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 4259 transitions. [2020-12-22 06:03:21,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:03:21,277 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:21,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:21,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:03:21,277 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 06:03:21,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:21,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1712031068, now seen corresponding path program 1 times [2020-12-22 06:03:21,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:21,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270930657] [2020-12-22 06:03:21,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:21,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:21,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270930657] [2020-12-22 06:03:21,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:21,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:03:21,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364863360] [2020-12-22 06:03:21,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:21,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:21,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:21,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:21,383 INFO L87 Difference]: Start difference. First operand 2273 states and 4259 transitions. Second operand 3 states. [2020-12-22 06:03:21,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:21,931 INFO L93 Difference]: Finished difference Result 4624 states and 8642 transitions. [2020-12-22 06:03:21,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:21,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 06:03:21,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:21,941 INFO L225 Difference]: With dead ends: 4624 [2020-12-22 06:03:21,942 INFO L226 Difference]: Without dead ends: 3170 [2020-12-22 06:03:21,946 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 06:03:21,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2020-12-22 06:03:22,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 3146. [2020-12-22 06:03:22,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3146 states. [2020-12-22 06:03:22,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 5845 transitions. [2020-12-22 06:03:22,109 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 5845 transitions. Word has length 66 [2020-12-22 06:03:22,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:22,110 INFO L481 AbstractCegarLoop]: Abstraction has 3146 states and 5845 transitions. [2020-12-22 06:03:22,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:22,110 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 5845 transitions. [2020-12-22 06:03:22,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:03:22,116 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:22,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:22,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:03:22,116 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 06:03:22,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:22,117 INFO L82 PathProgramCache]: Analyzing trace with hash -700913818, now seen corresponding path program 1 times [2020-12-22 06:03:22,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:22,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80113087] [2020-12-22 06:03:22,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:22,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:22,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80113087] [2020-12-22 06:03:22,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:22,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:22,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82587221] [2020-12-22 06:03:22,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:22,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:22,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:22,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:22,198 INFO L87 Difference]: Start difference. First operand 3146 states and 5845 transitions. Second operand 3 states. [2020-12-22 06:03:22,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:22,456 INFO L93 Difference]: Finished difference Result 8022 states and 14991 transitions. [2020-12-22 06:03:22,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:22,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 06:03:22,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:22,473 INFO L225 Difference]: With dead ends: 8022 [2020-12-22 06:03:22,473 INFO L226 Difference]: Without dead ends: 5840 [2020-12-22 06:03:22,478 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 06:03:22,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5840 states. [2020-12-22 06:03:22,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5840 to 5840. [2020-12-22 06:03:22,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5840 states. [2020-12-22 06:03:22,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5840 states to 5840 states and 10918 transitions. [2020-12-22 06:03:22,794 INFO L78 Accepts]: Start accepts. Automaton has 5840 states and 10918 transitions. Word has length 66 [2020-12-22 06:03:22,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:22,794 INFO L481 AbstractCegarLoop]: Abstraction has 5840 states and 10918 transitions. [2020-12-22 06:03:22,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:22,795 INFO L276 IsEmpty]: Start isEmpty. Operand 5840 states and 10918 transitions. [2020-12-22 06:03:22,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:03:22,797 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:22,798 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 06:03:22,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:03:22,798 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 06:03:22,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:22,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1850759963, now seen corresponding path program 1 times [2020-12-22 06:03:22,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:22,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795485842] [2020-12-22 06:03:22,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:22,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:22,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795485842] [2020-12-22 06:03:22,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:22,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:22,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185696520] [2020-12-22 06:03:22,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:22,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:22,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:22,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:22,870 INFO L87 Difference]: Start difference. First operand 5840 states and 10918 transitions. Second operand 3 states. [2020-12-22 06:03:23,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:23,294 INFO L93 Difference]: Finished difference Result 15437 states and 28926 transitions. [2020-12-22 06:03:23,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:23,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-22 06:03:23,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:23,323 INFO L225 Difference]: With dead ends: 15437 [2020-12-22 06:03:23,324 INFO L226 Difference]: Without dead ends: 11122 [2020-12-22 06:03:23,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:23,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11122 states. [2020-12-22 06:03:23,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11122 to 11120. [2020-12-22 06:03:23,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11120 states. [2020-12-22 06:03:23,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11120 states to 11120 states and 20855 transitions. [2020-12-22 06:03:23,913 INFO L78 Accepts]: Start accepts. Automaton has 11120 states and 20855 transitions. Word has length 68 [2020-12-22 06:03:23,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:23,914 INFO L481 AbstractCegarLoop]: Abstraction has 11120 states and 20855 transitions. [2020-12-22 06:03:23,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:23,914 INFO L276 IsEmpty]: Start isEmpty. Operand 11120 states and 20855 transitions. [2020-12-22 06:03:23,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:03:23,917 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:23,918 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] [2020-12-22 06:03:23,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:03:23,918 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 06:03:23,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:23,919 INFO L82 PathProgramCache]: Analyzing trace with hash 354398526, now seen corresponding path program 1 times [2020-12-22 06:03:23,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:23,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197647569] [2020-12-22 06:03:23,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:23,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:23,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197647569] [2020-12-22 06:03:23,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:23,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:23,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577895920] [2020-12-22 06:03:23,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:23,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:23,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:23,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:23,999 INFO L87 Difference]: Start difference. First operand 11120 states and 20855 transitions. Second operand 3 states. [2020-12-22 06:03:24,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:24,717 INFO L93 Difference]: Finished difference Result 30039 states and 56358 transitions. [2020-12-22 06:03:24,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:24,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 06:03:24,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:24,880 INFO L225 Difference]: With dead ends: 30039 [2020-12-22 06:03:24,880 INFO L226 Difference]: Without dead ends: 21465 [2020-12-22 06:03:24,895 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 06:03:24,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21465 states. [2020-12-22 06:03:25,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21465 to 21461. [2020-12-22 06:03:25,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21461 states. [2020-12-22 06:03:25,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21461 states to 21461 states and 40305 transitions. [2020-12-22 06:03:25,678 INFO L78 Accepts]: Start accepts. Automaton has 21461 states and 40305 transitions. Word has length 69 [2020-12-22 06:03:25,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:25,679 INFO L481 AbstractCegarLoop]: Abstraction has 21461 states and 40305 transitions. [2020-12-22 06:03:25,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:25,679 INFO L276 IsEmpty]: Start isEmpty. Operand 21461 states and 40305 transitions. [2020-12-22 06:03:25,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 06:03:25,682 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:25,683 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 06:03:25,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:03:25,683 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 06:03:25,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:25,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1898530494, now seen corresponding path program 1 times [2020-12-22 06:03:25,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:25,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769645380] [2020-12-22 06:03:25,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:25,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769645380] [2020-12-22 06:03:25,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:25,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:25,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765114715] [2020-12-22 06:03:25,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:25,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:25,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:25,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:25,863 INFO L87 Difference]: Start difference. First operand 21461 states and 40305 transitions. Second operand 3 states. [2020-12-22 06:03:27,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:27,414 INFO L93 Difference]: Finished difference Result 58781 states and 110332 transitions. [2020-12-22 06:03:27,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:27,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-22 06:03:27,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:27,498 INFO L225 Difference]: With dead ends: 58781 [2020-12-22 06:03:27,498 INFO L226 Difference]: Without dead ends: 41708 [2020-12-22 06:03:27,530 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 06:03:27,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41708 states. [2020-12-22 06:03:28,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41708 to 41702. [2020-12-22 06:03:28,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41702 states. [2020-12-22 06:03:29,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41702 states to 41702 states and 78351 transitions. [2020-12-22 06:03:29,106 INFO L78 Accepts]: Start accepts. Automaton has 41702 states and 78351 transitions. Word has length 70 [2020-12-22 06:03:29,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:29,107 INFO L481 AbstractCegarLoop]: Abstraction has 41702 states and 78351 transitions. [2020-12-22 06:03:29,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:29,107 INFO L276 IsEmpty]: Start isEmpty. Operand 41702 states and 78351 transitions. [2020-12-22 06:03:29,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:03:29,111 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:29,111 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 06:03:29,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:03:29,112 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 06:03:29,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:29,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1275113927, now seen corresponding path program 1 times [2020-12-22 06:03:29,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:29,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260199816] [2020-12-22 06:03:29,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:29,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:29,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260199816] [2020-12-22 06:03:29,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:29,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:29,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095851077] [2020-12-22 06:03:29,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:29,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:29,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:29,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:29,374 INFO L87 Difference]: Start difference. First operand 41702 states and 78351 transitions. Second operand 3 states. [2020-12-22 06:03:31,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:31,620 INFO L93 Difference]: Finished difference Result 115335 states and 216485 transitions. [2020-12-22 06:03:31,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:31,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-22 06:03:31,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:31,803 INFO L225 Difference]: With dead ends: 115335 [2020-12-22 06:03:31,803 INFO L226 Difference]: Without dead ends: 81302 [2020-12-22 06:03:31,841 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 06:03:31,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81302 states. [2020-12-22 06:03:34,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81302 to 81294. [2020-12-22 06:03:34,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81294 states. [2020-12-22 06:03:34,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81294 states to 81294 states and 152714 transitions. [2020-12-22 06:03:34,736 INFO L78 Accepts]: Start accepts. Automaton has 81294 states and 152714 transitions. Word has length 71 [2020-12-22 06:03:34,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:34,736 INFO L481 AbstractCegarLoop]: Abstraction has 81294 states and 152714 transitions. [2020-12-22 06:03:34,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:34,737 INFO L276 IsEmpty]: Start isEmpty. Operand 81294 states and 152714 transitions. [2020-12-22 06:03:34,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-22 06:03:34,756 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:34,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:34,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:03:34,757 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 06:03:34,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:34,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1398164266, now seen corresponding path program 1 times [2020-12-22 06:03:34,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:34,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749371029] [2020-12-22 06:03:34,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:34,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:34,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749371029] [2020-12-22 06:03:34,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:34,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:34,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550453119] [2020-12-22 06:03:34,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:34,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:34,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:34,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:34,834 INFO L87 Difference]: Start difference. First operand 81294 states and 152714 transitions. Second operand 4 states. [2020-12-22 06:03:37,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:37,899 INFO L93 Difference]: Finished difference Result 181053 states and 337753 transitions. [2020-12-22 06:03:37,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:03:37,900 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-12-22 06:03:37,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:38,317 INFO L225 Difference]: With dead ends: 181053 [2020-12-22 06:03:38,318 INFO L226 Difference]: Without dead ends: 99996 [2020-12-22 06:03:38,427 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 06:03:38,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99996 states. [2020-12-22 06:03:41,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99996 to 81424. [2020-12-22 06:03:41,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81424 states. [2020-12-22 06:03:41,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81424 states to 81424 states and 152844 transitions. [2020-12-22 06:03:41,295 INFO L78 Accepts]: Start accepts. Automaton has 81424 states and 152844 transitions. Word has length 102 [2020-12-22 06:03:41,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:41,296 INFO L481 AbstractCegarLoop]: Abstraction has 81424 states and 152844 transitions. [2020-12-22 06:03:41,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:41,296 INFO L276 IsEmpty]: Start isEmpty. Operand 81424 states and 152844 transitions. [2020-12-22 06:03:41,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-22 06:03:41,313 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:41,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:41,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:03:41,314 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 06:03:41,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:41,314 INFO L82 PathProgramCache]: Analyzing trace with hash 219062006, now seen corresponding path program 1 times [2020-12-22 06:03:41,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:41,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521869566] [2020-12-22 06:03:41,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:41,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:41,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521869566] [2020-12-22 06:03:41,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:41,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:41,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462429202] [2020-12-22 06:03:41,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:41,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:41,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:41,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:41,415 INFO L87 Difference]: Start difference. First operand 81424 states and 152844 transitions. Second operand 5 states. [2020-12-22 06:03:49,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:49,559 INFO L93 Difference]: Finished difference Result 327407 states and 611919 transitions. [2020-12-22 06:03:49,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:03:49,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-12-22 06:03:49,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:50,246 INFO L225 Difference]: With dead ends: 327407 [2020-12-22 06:03:50,246 INFO L226 Difference]: Without dead ends: 246052 [2020-12-22 06:03:50,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:03:50,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246052 states. [2020-12-22 06:03:54,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246052 to 81684. [2020-12-22 06:03:54,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81684 states. [2020-12-22 06:03:54,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81684 states to 81684 states and 153104 transitions. [2020-12-22 06:03:54,297 INFO L78 Accepts]: Start accepts. Automaton has 81684 states and 153104 transitions. Word has length 104 [2020-12-22 06:03:54,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:54,298 INFO L481 AbstractCegarLoop]: Abstraction has 81684 states and 153104 transitions. [2020-12-22 06:03:54,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:54,298 INFO L276 IsEmpty]: Start isEmpty. Operand 81684 states and 153104 transitions. [2020-12-22 06:03:54,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 06:03:54,314 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:54,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:54,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:03:54,315 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:54,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:54,315 INFO L82 PathProgramCache]: Analyzing trace with hash 670024993, now seen corresponding path program 1 times [2020-12-22 06:03:54,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:54,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436845913] [2020-12-22 06:03:54,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:54,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436845913] [2020-12-22 06:03:54,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:54,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:54,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912121688] [2020-12-22 06:03:54,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:54,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:54,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:54,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:54,422 INFO L87 Difference]: Start difference. First operand 81684 states and 153104 transitions. Second operand 4 states. [2020-12-22 06:03:58,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:58,919 INFO L93 Difference]: Finished difference Result 168249 states and 315114 transitions. [2020-12-22 06:03:58,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:58,920 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-22 06:03:58,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:59,085 INFO L225 Difference]: With dead ends: 168249 [2020-12-22 06:03:59,085 INFO L226 Difference]: Without dead ends: 86620 [2020-12-22 06:03:59,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:59,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86620 states. [2020-12-22 06:04:01,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86620 to 81684. [2020-12-22 06:04:01,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81684 states. [2020-12-22 06:04:02,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81684 states to 81684 states and 153038 transitions. [2020-12-22 06:04:02,119 INFO L78 Accepts]: Start accepts. Automaton has 81684 states and 153038 transitions. Word has length 105 [2020-12-22 06:04:02,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:02,120 INFO L481 AbstractCegarLoop]: Abstraction has 81684 states and 153038 transitions. [2020-12-22 06:04:02,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:04:02,120 INFO L276 IsEmpty]: Start isEmpty. Operand 81684 states and 153038 transitions. [2020-12-22 06:04:02,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 06:04:02,133 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:02,133 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:04:02,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:04:02,134 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:02,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:02,134 INFO L82 PathProgramCache]: Analyzing trace with hash -2053814415, now seen corresponding path program 1 times [2020-12-22 06:04:02,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:02,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388601886] [2020-12-22 06:04:02,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:02,413 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 06:04:02,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388601886] [2020-12-22 06:04:02,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:02,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:04:02,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661196792] [2020-12-22 06:04:02,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:04:02,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:02,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:04:02,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:02,419 INFO L87 Difference]: Start difference. First operand 81684 states and 153038 transitions. Second operand 4 states. [2020-12-22 06:04:06,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:06,569 INFO L93 Difference]: Finished difference Result 168249 states and 314984 transitions. [2020-12-22 06:04:06,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:04:06,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-12-22 06:04:06,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:06,713 INFO L225 Difference]: With dead ends: 168249 [2020-12-22 06:04:06,713 INFO L226 Difference]: Without dead ends: 86620 [2020-12-22 06:04:06,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:06,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86620 states. [2020-12-22 06:04:09,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86620 to 81684. [2020-12-22 06:04:09,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81684 states. [2020-12-22 06:04:09,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81684 states to 81684 states and 152972 transitions. [2020-12-22 06:04:09,736 INFO L78 Accepts]: Start accepts. Automaton has 81684 states and 152972 transitions. Word has length 106 [2020-12-22 06:04:09,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:09,736 INFO L481 AbstractCegarLoop]: Abstraction has 81684 states and 152972 transitions. [2020-12-22 06:04:09,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:04:09,736 INFO L276 IsEmpty]: Start isEmpty. Operand 81684 states and 152972 transitions. [2020-12-22 06:04:09,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 06:04:09,748 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:09,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:04:09,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:04:09,748 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:09,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:09,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1499532055, now seen corresponding path program 1 times [2020-12-22 06:04:09,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:09,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71894716] [2020-12-22 06:04:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:09,847 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 06:04:09,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71894716] [2020-12-22 06:04:09,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:09,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:04:09,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714117599] [2020-12-22 06:04:09,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:04:09,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:09,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:04:09,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:09,852 INFO L87 Difference]: Start difference. First operand 81684 states and 152972 transitions. Second operand 5 states. [2020-12-22 06:04:26,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:26,570 INFO L93 Difference]: Finished difference Result 689059 states and 1291164 transitions. [2020-12-22 06:04:26,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:04:26,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-12-22 06:04:26,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:28,249 INFO L225 Difference]: With dead ends: 689059 [2020-12-22 06:04:28,249 INFO L226 Difference]: Without dead ends: 607448 [2020-12-22 06:04:28,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:04:29,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607448 states. [2020-12-22 06:04:38,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607448 to 161313. [2020-12-22 06:04:38,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161313 states. [2020-12-22 06:04:38,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161313 states to 161313 states and 301555 transitions. [2020-12-22 06:04:38,636 INFO L78 Accepts]: Start accepts. Automaton has 161313 states and 301555 transitions. Word has length 107 [2020-12-22 06:04:38,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:38,636 INFO L481 AbstractCegarLoop]: Abstraction has 161313 states and 301555 transitions. [2020-12-22 06:04:38,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:04:38,636 INFO L276 IsEmpty]: Start isEmpty. Operand 161313 states and 301555 transitions. [2020-12-22 06:04:38,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 06:04:38,665 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:38,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:04:38,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:04:38,666 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:38,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:38,666 INFO L82 PathProgramCache]: Analyzing trace with hash -545591897, now seen corresponding path program 1 times [2020-12-22 06:04:38,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:38,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253877379] [2020-12-22 06:04:38,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:38,733 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 06:04:38,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253877379] [2020-12-22 06:04:38,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:38,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:04:38,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546865190] [2020-12-22 06:04:38,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:04:38,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:38,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:04:38,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:38,735 INFO L87 Difference]: Start difference. First operand 161313 states and 301555 transitions. Second operand 5 states. [2020-12-22 06:04:48,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:48,706 INFO L93 Difference]: Finished difference Result 389924 states and 719900 transitions. [2020-12-22 06:04:48,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:04:48,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-12-22 06:04:48,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:49,188 INFO L225 Difference]: With dead ends: 389924 [2020-12-22 06:04:49,188 INFO L226 Difference]: Without dead ends: 228858 [2020-12-22 06:04:49,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:04:49,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228858 states. [2020-12-22 06:04:57,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228858 to 161571. [2020-12-22 06:04:57,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161571 states. [2020-12-22 06:04:58,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161571 states to 161571 states and 301813 transitions. [2020-12-22 06:04:58,258 INFO L78 Accepts]: Start accepts. Automaton has 161571 states and 301813 transitions. Word has length 107 [2020-12-22 06:04:58,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:58,258 INFO L481 AbstractCegarLoop]: Abstraction has 161571 states and 301813 transitions. [2020-12-22 06:04:58,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:04:58,258 INFO L276 IsEmpty]: Start isEmpty. Operand 161571 states and 301813 transitions. [2020-12-22 06:04:58,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 06:04:58,273 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:58,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:04:58,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:04:58,273 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:58,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:58,274 INFO L82 PathProgramCache]: Analyzing trace with hash -117312964, now seen corresponding path program 1 times [2020-12-22 06:04:58,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:58,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778438273] [2020-12-22 06:04:58,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:04:58,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778438273] [2020-12-22 06:04:58,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:58,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:04:58,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709907856] [2020-12-22 06:04:58,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:04:58,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:58,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:04:58,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:58,380 INFO L87 Difference]: Start difference. First operand 161571 states and 301813 transitions. Second operand 4 states. [2020-12-22 06:05:07,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:07,180 INFO L93 Difference]: Finished difference Result 332955 states and 621404 transitions. [2020-12-22 06:05:07,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:05:07,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-12-22 06:05:07,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:07,520 INFO L225 Difference]: With dead ends: 332955 [2020-12-22 06:05:07,520 INFO L226 Difference]: Without dead ends: 171437 [2020-12-22 06:05:07,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:05:07,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171437 states. [2020-12-22 06:05:13,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171437 to 161571. [2020-12-22 06:05:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161571 states. [2020-12-22 06:05:14,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161571 states to 161571 states and 301683 transitions. [2020-12-22 06:05:14,343 INFO L78 Accepts]: Start accepts. Automaton has 161571 states and 301683 transitions. Word has length 107 [2020-12-22 06:05:14,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:14,343 INFO L481 AbstractCegarLoop]: Abstraction has 161571 states and 301683 transitions. [2020-12-22 06:05:14,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:05:14,343 INFO L276 IsEmpty]: Start isEmpty. Operand 161571 states and 301683 transitions. [2020-12-22 06:05:14,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 06:05:14,360 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:14,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:05:14,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:05:14,360 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:05:14,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:14,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1311357294, now seen corresponding path program 1 times [2020-12-22 06:05:14,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:14,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851032504] [2020-12-22 06:05:14,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:14,430 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 06:05:14,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851032504] [2020-12-22 06:05:14,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:14,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:05:14,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196102822] [2020-12-22 06:05:14,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:05:14,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:14,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:05:14,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:05:14,432 INFO L87 Difference]: Start difference. First operand 161571 states and 301683 transitions. Second operand 5 states. [2020-12-22 06:05:27,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:27,586 INFO L93 Difference]: Finished difference Result 369291 states and 682428 transitions. [2020-12-22 06:05:27,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:05:27,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-12-22 06:05:27,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:28,156 INFO L225 Difference]: With dead ends: 369291 [2020-12-22 06:05:28,156 INFO L226 Difference]: Without dead ends: 207761 [2020-12-22 06:05:28,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:05:28,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207761 states. [2020-12-22 06:05:34,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207761 to 110048. [2020-12-22 06:05:34,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110048 states. [2020-12-22 06:05:34,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110048 states to 110048 states and 202996 transitions. [2020-12-22 06:05:34,260 INFO L78 Accepts]: Start accepts. Automaton has 110048 states and 202996 transitions. Word has length 108 [2020-12-22 06:05:34,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:34,260 INFO L481 AbstractCegarLoop]: Abstraction has 110048 states and 202996 transitions. [2020-12-22 06:05:34,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:05:34,260 INFO L276 IsEmpty]: Start isEmpty. Operand 110048 states and 202996 transitions. [2020-12-22 06:05:34,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 06:05:34,281 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:34,281 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:05:34,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 06:05:34,281 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:05:34,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:34,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1741831969, now seen corresponding path program 1 times [2020-12-22 06:05:34,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:34,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599297585] [2020-12-22 06:05:34,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:34,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:34,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599297585] [2020-12-22 06:05:34,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:34,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:05:34,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275697055] [2020-12-22 06:05:34,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:05:34,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:34,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:05:34,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:05:34,396 INFO L87 Difference]: Start difference. First operand 110048 states and 202996 transitions. Second operand 5 states. [2020-12-22 06:05:50,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:50,705 INFO L93 Difference]: Finished difference Result 463943 states and 855817 transitions. [2020-12-22 06:05:50,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:05:50,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-12-22 06:05:50,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:51,677 INFO L225 Difference]: With dead ends: 463943 [2020-12-22 06:05:51,677 INFO L226 Difference]: Without dead ends: 354116 [2020-12-22 06:05:51,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:05:52,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354116 states. [2020-12-22 06:05:58,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354116 to 110176. [2020-12-22 06:05:58,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110176 states. [2020-12-22 06:05:58,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110176 states to 110176 states and 203060 transitions. [2020-12-22 06:05:58,966 INFO L78 Accepts]: Start accepts. Automaton has 110176 states and 203060 transitions. Word has length 153 [2020-12-22 06:05:58,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:58,966 INFO L481 AbstractCegarLoop]: Abstraction has 110176 states and 203060 transitions. [2020-12-22 06:05:58,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:05:58,966 INFO L276 IsEmpty]: Start isEmpty. Operand 110176 states and 203060 transitions. [2020-12-22 06:05:58,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-22 06:05:58,986 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:58,987 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:05:58,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 06:05:58,987 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:05:58,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:58,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1548955956, now seen corresponding path program 1 times [2020-12-22 06:05:58,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:58,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271647749] [2020-12-22 06:05:58,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:59,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:59,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271647749] [2020-12-22 06:05:59,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:59,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:05:59,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030152399] [2020-12-22 06:05:59,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:05:59,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:59,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:05:59,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:05:59,318 INFO L87 Difference]: Start difference. First operand 110176 states and 203060 transitions. Second operand 3 states. [2020-12-22 06:06:08,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:08,002 INFO L93 Difference]: Finished difference Result 235524 states and 431489 transitions. [2020-12-22 06:06:08,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:06:08,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2020-12-22 06:06:08,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:08,245 INFO L225 Difference]: With dead ends: 235524 [2020-12-22 06:06:08,245 INFO L226 Difference]: Without dead ends: 125569 [2020-12-22 06:06:08,312 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 06:06:08,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125569 states. [2020-12-22 06:06:13,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125569 to 108768. [2020-12-22 06:06:13,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108768 states. [2020-12-22 06:06:13,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108768 states to 108768 states and 199988 transitions. [2020-12-22 06:06:13,983 INFO L78 Accepts]: Start accepts. Automaton has 108768 states and 199988 transitions. Word has length 154 [2020-12-22 06:06:13,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:13,984 INFO L481 AbstractCegarLoop]: Abstraction has 108768 states and 199988 transitions. [2020-12-22 06:06:13,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:06:13,984 INFO L276 IsEmpty]: Start isEmpty. Operand 108768 states and 199988 transitions. [2020-12-22 06:06:14,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 06:06:14,000 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:14,000 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:06:14,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 06:06:14,001 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:14,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:14,001 INFO L82 PathProgramCache]: Analyzing trace with hash 561968585, now seen corresponding path program 1 times [2020-12-22 06:06:14,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:14,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004361051] [2020-12-22 06:06:14,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:14,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:06:14,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004361051] [2020-12-22 06:06:14,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:14,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:06:14,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096774212] [2020-12-22 06:06:14,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:06:14,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:14,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:06:14,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:06:14,099 INFO L87 Difference]: Start difference. First operand 108768 states and 199988 transitions. Second operand 5 states. [2020-12-22 06:06:21,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:21,297 INFO L93 Difference]: Finished difference Result 226808 states and 416863 transitions. [2020-12-22 06:06:21,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:06:21,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-12-22 06:06:21,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:21,522 INFO L225 Difference]: With dead ends: 226808 [2020-12-22 06:06:21,523 INFO L226 Difference]: Without dead ends: 118119 [2020-12-22 06:06:21,589 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 06:06:21,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118119 states. [2020-12-22 06:06:27,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118119 to 108768. [2020-12-22 06:06:27,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108768 states. [2020-12-22 06:06:27,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108768 states to 108768 states and 198188 transitions. [2020-12-22 06:06:27,346 INFO L78 Accepts]: Start accepts. Automaton has 108768 states and 198188 transitions. Word has length 157 [2020-12-22 06:06:27,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:27,347 INFO L481 AbstractCegarLoop]: Abstraction has 108768 states and 198188 transitions. [2020-12-22 06:06:27,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:06:27,347 INFO L276 IsEmpty]: Start isEmpty. Operand 108768 states and 198188 transitions. [2020-12-22 06:06:27,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-12-22 06:06:27,572 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:27,573 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:06:27,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 06:06:27,573 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:27,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:27,573 INFO L82 PathProgramCache]: Analyzing trace with hash 220448881, now seen corresponding path program 1 times [2020-12-22 06:06:27,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:27,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614031457] [2020-12-22 06:06:27,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:27,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:06:27,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614031457] [2020-12-22 06:06:27,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:27,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:06:27,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731172230] [2020-12-22 06:06:27,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:06:27,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:27,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:06:27,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:06:27,713 INFO L87 Difference]: Start difference. First operand 108768 states and 198188 transitions. Second operand 5 states. [2020-12-22 06:06:34,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:34,136 INFO L93 Difference]: Finished difference Result 224673 states and 409890 transitions. [2020-12-22 06:06:34,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:06:34,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-12-22 06:06:34,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:34,358 INFO L225 Difference]: With dead ends: 224673 [2020-12-22 06:06:34,358 INFO L226 Difference]: Without dead ends: 116126 [2020-12-22 06:06:34,426 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 06:06:34,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116126 states.