/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:59:11,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:59:11,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:59:11,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:59:11,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:59:11,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:59:11,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:59:11,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:59:11,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:59:11,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:59:11,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:59:11,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:59:11,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:59:11,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:59:11,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:59:11,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:59:11,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:59:11,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:59:11,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:59:11,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:59:11,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:59:11,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:59:11,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:59:11,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:59:11,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:59:11,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:59:11,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:59:11,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:59:11,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:59:11,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:59:11,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:59:11,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:59:11,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:59:11,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:59:11,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:59:11,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:59:11,226 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:59:11,259 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:59:11,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:59:11,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:59:11,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:59:11,262 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:59:11,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:59:11,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:59:11,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:59:11,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:59:11,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:59:11,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:59:11,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:59:11,266 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:59:11,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:59:11,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:59:11,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:59:11,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:59:11,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:59:11,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:59:11,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:59:11,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:59:11,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:59:11,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:59:11,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:59:11,268 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:59:11,269 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:59:11,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:59:11,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:59:11,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:59:11,779 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:59:11,780 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:59:11,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c [2020-12-22 05:59:11,872 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47a349e74/9560e3c0d89a4ca2861287c2edd1a973/FLAG7f312379f [2020-12-22 05:59:12,633 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:59:12,634 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c [2020-12-22 05:59:12,663 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47a349e74/9560e3c0d89a4ca2861287c2edd1a973/FLAG7f312379f [2020-12-22 05:59:12,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47a349e74/9560e3c0d89a4ca2861287c2edd1a973 [2020-12-22 05:59:12,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:59:12,850 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:59:12,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:59:12,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:59:12,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:59:12,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:59:12" (1/1) ... [2020-12-22 05:59:12,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14fba4c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:12, skipping insertion in model container [2020-12-22 05:59:12,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:59:12" (1/1) ... [2020-12-22 05:59:12,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:59:12,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:59:13,122 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c[1221,1234] [2020-12-22 05:59:13,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:59:13,663 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:59:13,679 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c[1221,1234] [2020-12-22 05:59:13,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:59:13,910 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:59:13,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:13 WrapperNode [2020-12-22 05:59:13,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:59:13,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:59:13,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:59:13,913 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:59:13,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:13" (1/1) ... [2020-12-22 05:59:13,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:13" (1/1) ... [2020-12-22 05:59:14,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:59:14,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:59:14,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:59:14,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:59:14,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:13" (1/1) ... [2020-12-22 05:59:14,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:13" (1/1) ... [2020-12-22 05:59:14,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:13" (1/1) ... [2020-12-22 05:59:14,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:13" (1/1) ... [2020-12-22 05:59:14,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:13" (1/1) ... [2020-12-22 05:59:14,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:13" (1/1) ... [2020-12-22 05:59:14,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:13" (1/1) ... [2020-12-22 05:59:14,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:59:14,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:59:14,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:59:14,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:59:14,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:59:14,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:59:14,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:59:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:59:14,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:59:22,912 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:59:22,913 INFO L299 CfgBuilder]: Removed 993 assume(true) statements. [2020-12-22 05:59:22,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:59:22 BoogieIcfgContainer [2020-12-22 05:59:22,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:59:22,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:59:22,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:59:22,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:59:22,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:59:12" (1/3) ... [2020-12-22 05:59:22,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63437fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:59:22, skipping insertion in model container [2020-12-22 05:59:22,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:59:13" (2/3) ... [2020-12-22 05:59:22,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63437fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:59:22, skipping insertion in model container [2020-12-22 05:59:22,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:59:22" (3/3) ... [2020-12-22 05:59:22,930 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product18.cil.c [2020-12-22 05:59:22,938 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:59:22,947 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 05:59:22,967 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 05:59:23,021 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:59:23,022 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:59:23,022 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:59:23,022 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:59:23,022 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:59:23,022 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:59:23,022 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:59:23,023 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:59:23,121 INFO L276 IsEmpty]: Start isEmpty. Operand 4583 states. [2020-12-22 05:59:23,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 05:59:23,134 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:23,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:23,136 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:23,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:23,142 INFO L82 PathProgramCache]: Analyzing trace with hash -2055578945, now seen corresponding path program 1 times [2020-12-22 05:59:23,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:23,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20975852] [2020-12-22 05:59:23,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:23,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:23,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20975852] [2020-12-22 05:59:23,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:23,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:23,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195312899] [2020-12-22 05:59:23,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:59:23,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:23,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:59:23,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:23,658 INFO L87 Difference]: Start difference. First operand 4583 states. Second operand 3 states. [2020-12-22 05:59:24,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:24,237 INFO L93 Difference]: Finished difference Result 13669 states and 25907 transitions. [2020-12-22 05:59:24,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:59:24,239 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-12-22 05:59:24,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:24,353 INFO L225 Difference]: With dead ends: 13669 [2020-12-22 05:59:24,353 INFO L226 Difference]: Without dead ends: 9091 [2020-12-22 05:59:24,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:24,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9091 states. [2020-12-22 05:59:24,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9091 to 4579. [2020-12-22 05:59:24,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4579 states. [2020-12-22 05:59:24,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4579 states to 4579 states and 8666 transitions. [2020-12-22 05:59:24,648 INFO L78 Accepts]: Start accepts. Automaton has 4579 states and 8666 transitions. Word has length 36 [2020-12-22 05:59:24,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:24,649 INFO L481 AbstractCegarLoop]: Abstraction has 4579 states and 8666 transitions. [2020-12-22 05:59:24,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:59:24,649 INFO L276 IsEmpty]: Start isEmpty. Operand 4579 states and 8666 transitions. [2020-12-22 05:59:24,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 05:59:24,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:24,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:24,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:59:24,654 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:24,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:24,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1563964408, now seen corresponding path program 1 times [2020-12-22 05:59:24,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:24,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079199265] [2020-12-22 05:59:24,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:24,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:24,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079199265] [2020-12-22 05:59:24,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:24,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:59:24,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370710897] [2020-12-22 05:59:24,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:59:24,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:24,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:59:24,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:24,847 INFO L87 Difference]: Start difference. First operand 4579 states and 8666 transitions. Second operand 6 states. [2020-12-22 05:59:25,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:25,853 INFO L93 Difference]: Finished difference Result 18091 states and 34261 transitions. [2020-12-22 05:59:25,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:59:25,854 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-12-22 05:59:25,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:25,958 INFO L225 Difference]: With dead ends: 18091 [2020-12-22 05:59:25,958 INFO L226 Difference]: Without dead ends: 13555 [2020-12-22 05:59:25,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:59:26,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13555 states. [2020-12-22 05:59:26,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13555 to 4575. [2020-12-22 05:59:26,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4575 states. [2020-12-22 05:59:26,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4575 states to 4575 states and 8655 transitions. [2020-12-22 05:59:26,273 INFO L78 Accepts]: Start accepts. Automaton has 4575 states and 8655 transitions. Word has length 43 [2020-12-22 05:59:26,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:26,274 INFO L481 AbstractCegarLoop]: Abstraction has 4575 states and 8655 transitions. [2020-12-22 05:59:26,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:59:26,274 INFO L276 IsEmpty]: Start isEmpty. Operand 4575 states and 8655 transitions. [2020-12-22 05:59:26,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 05:59:26,280 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:26,280 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] [2020-12-22 05:59:26,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:59:26,281 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:26,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:26,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1092574075, now seen corresponding path program 1 times [2020-12-22 05:59:26,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:26,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148847803] [2020-12-22 05:59:26,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:26,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:26,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148847803] [2020-12-22 05:59:26,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:26,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:26,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30315236] [2020-12-22 05:59:26,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:26,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:26,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:26,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:26,556 INFO L87 Difference]: Start difference. First operand 4575 states and 8655 transitions. Second operand 4 states. [2020-12-22 05:59:27,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:27,242 INFO L93 Difference]: Finished difference Result 13613 states and 25774 transitions. [2020-12-22 05:59:27,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:27,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-12-22 05:59:27,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:27,279 INFO L225 Difference]: With dead ends: 13613 [2020-12-22 05:59:27,279 INFO L226 Difference]: Without dead ends: 9081 [2020-12-22 05:59:27,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:27,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9081 states. [2020-12-22 05:59:27,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9081 to 4575. [2020-12-22 05:59:27,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4575 states. [2020-12-22 05:59:27,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4575 states to 4575 states and 8646 transitions. [2020-12-22 05:59:27,531 INFO L78 Accepts]: Start accepts. Automaton has 4575 states and 8646 transitions. Word has length 45 [2020-12-22 05:59:27,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:27,538 INFO L481 AbstractCegarLoop]: Abstraction has 4575 states and 8646 transitions. [2020-12-22 05:59:27,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:27,538 INFO L276 IsEmpty]: Start isEmpty. Operand 4575 states and 8646 transitions. [2020-12-22 05:59:27,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 05:59:27,540 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:27,540 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] [2020-12-22 05:59:27,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:59:27,541 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:27,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:27,541 INFO L82 PathProgramCache]: Analyzing trace with hash 808246098, now seen corresponding path program 1 times [2020-12-22 05:59:27,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:27,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826354410] [2020-12-22 05:59:27,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:27,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:27,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826354410] [2020-12-22 05:59:27,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:27,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:27,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50172472] [2020-12-22 05:59:27,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:27,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:27,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:27,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:27,650 INFO L87 Difference]: Start difference. First operand 4575 states and 8646 transitions. Second operand 4 states. [2020-12-22 05:59:28,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:28,300 INFO L93 Difference]: Finished difference Result 13613 states and 25756 transitions. [2020-12-22 05:59:28,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:28,301 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-12-22 05:59:28,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:28,331 INFO L225 Difference]: With dead ends: 13613 [2020-12-22 05:59:28,331 INFO L226 Difference]: Without dead ends: 9081 [2020-12-22 05:59:28,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:28,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9081 states. [2020-12-22 05:59:28,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9081 to 4575. [2020-12-22 05:59:28,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4575 states. [2020-12-22 05:59:28,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4575 states to 4575 states and 8637 transitions. [2020-12-22 05:59:28,841 INFO L78 Accepts]: Start accepts. Automaton has 4575 states and 8637 transitions. Word has length 47 [2020-12-22 05:59:28,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:28,841 INFO L481 AbstractCegarLoop]: Abstraction has 4575 states and 8637 transitions. [2020-12-22 05:59:28,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:28,842 INFO L276 IsEmpty]: Start isEmpty. Operand 4575 states and 8637 transitions. [2020-12-22 05:59:28,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 05:59:28,844 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:28,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:28,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 05:59:28,844 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:28,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:28,845 INFO L82 PathProgramCache]: Analyzing trace with hash -2141840251, now seen corresponding path program 1 times [2020-12-22 05:59:28,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:28,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289214126] [2020-12-22 05:59:28,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:28,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:28,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289214126] [2020-12-22 05:59:28,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:28,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:28,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44952512] [2020-12-22 05:59:28,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:28,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:28,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:28,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:28,949 INFO L87 Difference]: Start difference. First operand 4575 states and 8637 transitions. Second operand 4 states. [2020-12-22 05:59:30,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:30,024 INFO L93 Difference]: Finished difference Result 22565 states and 42692 transitions. [2020-12-22 05:59:30,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:30,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-12-22 05:59:30,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:30,084 INFO L225 Difference]: With dead ends: 22565 [2020-12-22 05:59:30,084 INFO L226 Difference]: Without dead ends: 18033 [2020-12-22 05:59:30,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:30,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18033 states. [2020-12-22 05:59:30,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18033 to 4575. [2020-12-22 05:59:30,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4575 states. [2020-12-22 05:59:30,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4575 states to 4575 states and 8633 transitions. [2020-12-22 05:59:30,510 INFO L78 Accepts]: Start accepts. Automaton has 4575 states and 8633 transitions. Word has length 49 [2020-12-22 05:59:30,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:30,512 INFO L481 AbstractCegarLoop]: Abstraction has 4575 states and 8633 transitions. [2020-12-22 05:59:30,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:30,513 INFO L276 IsEmpty]: Start isEmpty. Operand 4575 states and 8633 transitions. [2020-12-22 05:59:30,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 05:59:30,515 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:30,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:30,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 05:59:30,516 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:30,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:30,517 INFO L82 PathProgramCache]: Analyzing trace with hash -710330107, now seen corresponding path program 1 times [2020-12-22 05:59:30,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:30,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259606721] [2020-12-22 05:59:30,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:30,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:30,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259606721] [2020-12-22 05:59:30,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:30,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:30,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331147122] [2020-12-22 05:59:30,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:30,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:30,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:30,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:30,596 INFO L87 Difference]: Start difference. First operand 4575 states and 8633 transitions. Second operand 4 states. [2020-12-22 05:59:31,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:31,206 INFO L93 Difference]: Finished difference Result 18068 states and 34175 transitions. [2020-12-22 05:59:31,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:31,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-12-22 05:59:31,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:31,244 INFO L225 Difference]: With dead ends: 18068 [2020-12-22 05:59:31,244 INFO L226 Difference]: Without dead ends: 13515 [2020-12-22 05:59:31,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:31,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13515 states. [2020-12-22 05:59:31,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13515 to 4557. [2020-12-22 05:59:31,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4557 states. [2020-12-22 05:59:31,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4557 states to 4557 states and 8602 transitions. [2020-12-22 05:59:31,570 INFO L78 Accepts]: Start accepts. Automaton has 4557 states and 8602 transitions. Word has length 49 [2020-12-22 05:59:31,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:31,570 INFO L481 AbstractCegarLoop]: Abstraction has 4557 states and 8602 transitions. [2020-12-22 05:59:31,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:31,571 INFO L276 IsEmpty]: Start isEmpty. Operand 4557 states and 8602 transitions. [2020-12-22 05:59:31,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 05:59:31,572 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:31,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:31,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 05:59:31,572 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:31,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:31,578 INFO L82 PathProgramCache]: Analyzing trace with hash 141854634, now seen corresponding path program 1 times [2020-12-22 05:59:31,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:31,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197689855] [2020-12-22 05:59:31,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:31,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197689855] [2020-12-22 05:59:31,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:31,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:31,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165807301] [2020-12-22 05:59:31,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:31,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:31,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:31,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:31,662 INFO L87 Difference]: Start difference. First operand 4557 states and 8602 transitions. Second operand 4 states. [2020-12-22 05:59:32,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:32,221 INFO L93 Difference]: Finished difference Result 13577 states and 25669 transitions. [2020-12-22 05:59:32,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:32,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-12-22 05:59:32,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:32,246 INFO L225 Difference]: With dead ends: 13577 [2020-12-22 05:59:32,246 INFO L226 Difference]: Without dead ends: 9042 [2020-12-22 05:59:32,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:32,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9042 states. [2020-12-22 05:59:32,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9042 to 4557. [2020-12-22 05:59:32,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4557 states. [2020-12-22 05:59:32,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4557 states to 4557 states and 8596 transitions. [2020-12-22 05:59:32,486 INFO L78 Accepts]: Start accepts. Automaton has 4557 states and 8596 transitions. Word has length 50 [2020-12-22 05:59:32,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:32,487 INFO L481 AbstractCegarLoop]: Abstraction has 4557 states and 8596 transitions. [2020-12-22 05:59:32,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:32,487 INFO L276 IsEmpty]: Start isEmpty. Operand 4557 states and 8596 transitions. [2020-12-22 05:59:32,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 05:59:32,488 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:32,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:32,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 05:59:32,489 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:32,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:32,490 INFO L82 PathProgramCache]: Analyzing trace with hash -324048278, now seen corresponding path program 1 times [2020-12-22 05:59:32,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:32,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968078451] [2020-12-22 05:59:32,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:32,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:32,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968078451] [2020-12-22 05:59:32,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:32,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:32,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707528168] [2020-12-22 05:59:32,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:32,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:32,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:32,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:32,592 INFO L87 Difference]: Start difference. First operand 4557 states and 8596 transitions. Second operand 4 states. [2020-12-22 05:59:33,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:33,177 INFO L93 Difference]: Finished difference Result 13577 states and 25657 transitions. [2020-12-22 05:59:33,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:33,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-12-22 05:59:33,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:33,200 INFO L225 Difference]: With dead ends: 13577 [2020-12-22 05:59:33,200 INFO L226 Difference]: Without dead ends: 9042 [2020-12-22 05:59:33,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:33,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9042 states. [2020-12-22 05:59:33,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9042 to 4557. [2020-12-22 05:59:33,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4557 states. [2020-12-22 05:59:33,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4557 states to 4557 states and 8590 transitions. [2020-12-22 05:59:33,413 INFO L78 Accepts]: Start accepts. Automaton has 4557 states and 8590 transitions. Word has length 51 [2020-12-22 05:59:33,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:33,414 INFO L481 AbstractCegarLoop]: Abstraction has 4557 states and 8590 transitions. [2020-12-22 05:59:33,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:33,415 INFO L276 IsEmpty]: Start isEmpty. Operand 4557 states and 8590 transitions. [2020-12-22 05:59:33,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 05:59:33,416 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:33,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:33,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 05:59:33,416 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:33,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:33,417 INFO L82 PathProgramCache]: Analyzing trace with hash -128136977, now seen corresponding path program 1 times [2020-12-22 05:59:33,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:33,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435911929] [2020-12-22 05:59:33,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:33,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:33,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435911929] [2020-12-22 05:59:33,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:33,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:59:33,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325793052] [2020-12-22 05:59:33,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:59:33,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:33,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:59:33,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:59:33,529 INFO L87 Difference]: Start difference. First operand 4557 states and 8590 transitions. Second operand 7 states. [2020-12-22 05:59:34,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:34,485 INFO L93 Difference]: Finished difference Result 22536 states and 42606 transitions. [2020-12-22 05:59:34,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:34,485 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-12-22 05:59:34,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:34,537 INFO L225 Difference]: With dead ends: 22536 [2020-12-22 05:59:34,537 INFO L226 Difference]: Without dead ends: 18007 [2020-12-22 05:59:34,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:59:34,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18007 states. [2020-12-22 05:59:34,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18007 to 4559. [2020-12-22 05:59:34,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4559 states. [2020-12-22 05:59:34,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4559 states to 4559 states and 8591 transitions. [2020-12-22 05:59:34,869 INFO L78 Accepts]: Start accepts. Automaton has 4559 states and 8591 transitions. Word has length 52 [2020-12-22 05:59:34,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:34,869 INFO L481 AbstractCegarLoop]: Abstraction has 4559 states and 8591 transitions. [2020-12-22 05:59:34,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:59:34,870 INFO L276 IsEmpty]: Start isEmpty. Operand 4559 states and 8591 transitions. [2020-12-22 05:59:34,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 05:59:34,871 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:34,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:34,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 05:59:34,871 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:34,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:34,872 INFO L82 PathProgramCache]: Analyzing trace with hash 249606868, now seen corresponding path program 1 times [2020-12-22 05:59:34,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:34,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879720762] [2020-12-22 05:59:34,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:34,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:34,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879720762] [2020-12-22 05:59:34,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:34,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:59:34,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760638082] [2020-12-22 05:59:34,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:59:34,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:34,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:59:34,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:59:34,971 INFO L87 Difference]: Start difference. First operand 4559 states and 8591 transitions. Second operand 7 states. [2020-12-22 05:59:36,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:36,116 INFO L93 Difference]: Finished difference Result 22528 states and 42585 transitions. [2020-12-22 05:59:36,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:36,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-12-22 05:59:36,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:36,172 INFO L225 Difference]: With dead ends: 22528 [2020-12-22 05:59:36,172 INFO L226 Difference]: Without dead ends: 18002 [2020-12-22 05:59:36,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:59:36,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18002 states. [2020-12-22 05:59:36,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18002 to 4564. [2020-12-22 05:59:36,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4564 states. [2020-12-22 05:59:36,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 8599 transitions. [2020-12-22 05:59:36,562 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 8599 transitions. Word has length 54 [2020-12-22 05:59:36,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:36,562 INFO L481 AbstractCegarLoop]: Abstraction has 4564 states and 8599 transitions. [2020-12-22 05:59:36,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:59:36,562 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 8599 transitions. [2020-12-22 05:59:36,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 05:59:36,564 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:36,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:36,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 05:59:36,565 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:36,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:36,565 INFO L82 PathProgramCache]: Analyzing trace with hash 175716207, now seen corresponding path program 1 times [2020-12-22 05:59:36,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:36,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789903925] [2020-12-22 05:59:36,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:36,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:36,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789903925] [2020-12-22 05:59:36,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:36,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:36,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932203842] [2020-12-22 05:59:36,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:59:36,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:36,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:59:36,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:36,641 INFO L87 Difference]: Start difference. First operand 4564 states and 8599 transitions. Second operand 3 states. [2020-12-22 05:59:36,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:36,915 INFO L93 Difference]: Finished difference Result 9070 states and 17116 transitions. [2020-12-22 05:59:36,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:59:36,915 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 05:59:36,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:36,927 INFO L225 Difference]: With dead ends: 9070 [2020-12-22 05:59:36,928 INFO L226 Difference]: Without dead ends: 4543 [2020-12-22 05:59:36,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:36,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4543 states. [2020-12-22 05:59:37,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4543 to 4543. [2020-12-22 05:59:37,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4543 states. [2020-12-22 05:59:37,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4543 states to 4543 states and 8563 transitions. [2020-12-22 05:59:37,197 INFO L78 Accepts]: Start accepts. Automaton has 4543 states and 8563 transitions. Word has length 56 [2020-12-22 05:59:37,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:37,197 INFO L481 AbstractCegarLoop]: Abstraction has 4543 states and 8563 transitions. [2020-12-22 05:59:37,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:59:37,198 INFO L276 IsEmpty]: Start isEmpty. Operand 4543 states and 8563 transitions. [2020-12-22 05:59:37,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 05:59:37,199 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:37,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:37,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 05:59:37,202 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:37,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:37,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1962506410, now seen corresponding path program 1 times [2020-12-22 05:59:37,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:37,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988576985] [2020-12-22 05:59:37,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:37,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:37,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988576985] [2020-12-22 05:59:37,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:37,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:37,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792644049] [2020-12-22 05:59:37,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:37,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:37,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:37,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:37,285 INFO L87 Difference]: Start difference. First operand 4543 states and 8563 transitions. Second operand 5 states. [2020-12-22 05:59:37,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:37,584 INFO L93 Difference]: Finished difference Result 9019 states and 17038 transitions. [2020-12-22 05:59:37,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:37,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-12-22 05:59:37,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:37,592 INFO L225 Difference]: With dead ends: 9019 [2020-12-22 05:59:37,592 INFO L226 Difference]: Without dead ends: 4537 [2020-12-22 05:59:37,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:59:37,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4537 states. [2020-12-22 05:59:37,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4537 to 4537. [2020-12-22 05:59:37,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4537 states. [2020-12-22 05:59:37,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4537 states to 4537 states and 8554 transitions. [2020-12-22 05:59:37,818 INFO L78 Accepts]: Start accepts. Automaton has 4537 states and 8554 transitions. Word has length 58 [2020-12-22 05:59:37,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:37,819 INFO L481 AbstractCegarLoop]: Abstraction has 4537 states and 8554 transitions. [2020-12-22 05:59:37,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:37,819 INFO L276 IsEmpty]: Start isEmpty. Operand 4537 states and 8554 transitions. [2020-12-22 05:59:37,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 05:59:37,820 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:37,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:37,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 05:59:37,821 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:37,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:37,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1255951402, now seen corresponding path program 1 times [2020-12-22 05:59:37,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:37,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719907192] [2020-12-22 05:59:37,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:37,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:37,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719907192] [2020-12-22 05:59:37,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:37,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:37,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247090227] [2020-12-22 05:59:37,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:37,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:37,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:37,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:37,878 INFO L87 Difference]: Start difference. First operand 4537 states and 8554 transitions. Second operand 4 states. [2020-12-22 05:59:38,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:38,119 INFO L93 Difference]: Finished difference Result 9013 states and 17029 transitions. [2020-12-22 05:59:38,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:59:38,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-12-22 05:59:38,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:38,125 INFO L225 Difference]: With dead ends: 9013 [2020-12-22 05:59:38,125 INFO L226 Difference]: Without dead ends: 4523 [2020-12-22 05:59:38,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:38,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4523 states. [2020-12-22 05:59:38,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4523 to 4523. [2020-12-22 05:59:38,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4523 states. [2020-12-22 05:59:38,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4523 states to 4523 states and 8533 transitions. [2020-12-22 05:59:38,373 INFO L78 Accepts]: Start accepts. Automaton has 4523 states and 8533 transitions. Word has length 58 [2020-12-22 05:59:38,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:38,373 INFO L481 AbstractCegarLoop]: Abstraction has 4523 states and 8533 transitions. [2020-12-22 05:59:38,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:38,374 INFO L276 IsEmpty]: Start isEmpty. Operand 4523 states and 8533 transitions. [2020-12-22 05:59:38,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 05:59:38,375 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:38,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:38,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 05:59:38,376 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:38,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:38,376 INFO L82 PathProgramCache]: Analyzing trace with hash -244440867, now seen corresponding path program 1 times [2020-12-22 05:59:38,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:38,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744705889] [2020-12-22 05:59:38,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:38,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:38,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744705889] [2020-12-22 05:59:38,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:38,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:59:38,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795152532] [2020-12-22 05:59:38,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:59:38,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:38,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:59:38,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:38,450 INFO L87 Difference]: Start difference. First operand 4523 states and 8533 transitions. Second operand 6 states. [2020-12-22 05:59:38,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:38,831 INFO L93 Difference]: Finished difference Result 9013 states and 17024 transitions. [2020-12-22 05:59:38,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:38,832 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-12-22 05:59:38,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:38,837 INFO L225 Difference]: With dead ends: 9013 [2020-12-22 05:59:38,837 INFO L226 Difference]: Without dead ends: 4543 [2020-12-22 05:59:38,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:59:38,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4543 states. [2020-12-22 05:59:39,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4543 to 4523. [2020-12-22 05:59:39,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4523 states. [2020-12-22 05:59:39,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4523 states to 4523 states and 8532 transitions. [2020-12-22 05:59:39,087 INFO L78 Accepts]: Start accepts. Automaton has 4523 states and 8532 transitions. Word has length 59 [2020-12-22 05:59:39,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:39,088 INFO L481 AbstractCegarLoop]: Abstraction has 4523 states and 8532 transitions. [2020-12-22 05:59:39,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:59:39,088 INFO L276 IsEmpty]: Start isEmpty. Operand 4523 states and 8532 transitions. [2020-12-22 05:59:39,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 05:59:39,089 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:39,089 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 05:59:39,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 05:59:39,090 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:39,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:39,090 INFO L82 PathProgramCache]: Analyzing trace with hash -558837487, now seen corresponding path program 1 times [2020-12-22 05:59:39,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:39,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059093817] [2020-12-22 05:59:39,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:39,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:39,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059093817] [2020-12-22 05:59:39,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:39,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:59:39,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412972784] [2020-12-22 05:59:39,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:59:39,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:39,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:59:39,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:39,164 INFO L87 Difference]: Start difference. First operand 4523 states and 8532 transitions. Second operand 6 states. [2020-12-22 05:59:39,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:39,523 INFO L93 Difference]: Finished difference Result 9003 states and 17005 transitions. [2020-12-22 05:59:39,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:39,523 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-12-22 05:59:39,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:39,531 INFO L225 Difference]: With dead ends: 9003 [2020-12-22 05:59:39,531 INFO L226 Difference]: Without dead ends: 4538 [2020-12-22 05:59:39,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:59:39,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4538 states. [2020-12-22 05:59:39,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4538 to 4523. [2020-12-22 05:59:39,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4523 states. [2020-12-22 05:59:39,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4523 states to 4523 states and 8531 transitions. [2020-12-22 05:59:39,761 INFO L78 Accepts]: Start accepts. Automaton has 4523 states and 8531 transitions. Word has length 60 [2020-12-22 05:59:39,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:39,761 INFO L481 AbstractCegarLoop]: Abstraction has 4523 states and 8531 transitions. [2020-12-22 05:59:39,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:59:39,762 INFO L276 IsEmpty]: Start isEmpty. Operand 4523 states and 8531 transitions. [2020-12-22 05:59:39,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 05:59:39,763 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:39,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:39,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 05:59:39,763 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:39,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:39,764 INFO L82 PathProgramCache]: Analyzing trace with hash 2018540690, now seen corresponding path program 1 times [2020-12-22 05:59:39,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:39,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394404017] [2020-12-22 05:59:39,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:39,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:39,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394404017] [2020-12-22 05:59:39,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:39,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:59:39,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757507593] [2020-12-22 05:59:39,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:59:39,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:39,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:59:39,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:39,846 INFO L87 Difference]: Start difference. First operand 4523 states and 8531 transitions. Second operand 3 states. [2020-12-22 05:59:40,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:40,432 INFO L93 Difference]: Finished difference Result 10647 states and 20121 transitions. [2020-12-22 05:59:40,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:59:40,433 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 05:59:40,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:40,448 INFO L225 Difference]: With dead ends: 10647 [2020-12-22 05:59:40,448 INFO L226 Difference]: Without dead ends: 8360 [2020-12-22 05:59:40,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:40,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8360 states. [2020-12-22 05:59:40,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8360 to 6381. [2020-12-22 05:59:40,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6381 states. [2020-12-22 05:59:40,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 12049 transitions. [2020-12-22 05:59:40,801 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 12049 transitions. Word has length 61 [2020-12-22 05:59:40,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:40,801 INFO L481 AbstractCegarLoop]: Abstraction has 6381 states and 12049 transitions. [2020-12-22 05:59:40,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:59:40,801 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 12049 transitions. [2020-12-22 05:59:40,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 05:59:40,806 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:40,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:40,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 05:59:40,806 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:40,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:40,807 INFO L82 PathProgramCache]: Analyzing trace with hash 582803611, now seen corresponding path program 1 times [2020-12-22 05:59:40,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:40,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122190114] [2020-12-22 05:59:40,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:40,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:40,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122190114] [2020-12-22 05:59:40,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:40,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:40,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221773289] [2020-12-22 05:59:40,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:40,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:40,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:40,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:40,891 INFO L87 Difference]: Start difference. First operand 6381 states and 12049 transitions. Second operand 5 states. [2020-12-22 05:59:41,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:41,443 INFO L93 Difference]: Finished difference Result 12669 states and 23770 transitions. [2020-12-22 05:59:41,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:59:41,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-12-22 05:59:41,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:41,453 INFO L225 Difference]: With dead ends: 12669 [2020-12-22 05:59:41,453 INFO L226 Difference]: Without dead ends: 7456 [2020-12-22 05:59:41,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:59:41,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7456 states. [2020-12-22 05:59:41,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7456 to 5210. [2020-12-22 05:59:41,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5210 states. [2020-12-22 05:59:41,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5210 states to 5210 states and 9778 transitions. [2020-12-22 05:59:41,687 INFO L78 Accepts]: Start accepts. Automaton has 5210 states and 9778 transitions. Word has length 74 [2020-12-22 05:59:41,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:41,687 INFO L481 AbstractCegarLoop]: Abstraction has 5210 states and 9778 transitions. [2020-12-22 05:59:41,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:41,687 INFO L276 IsEmpty]: Start isEmpty. Operand 5210 states and 9778 transitions. [2020-12-22 05:59:41,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 05:59:41,689 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:41,690 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] [2020-12-22 05:59:41,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 05:59:41,690 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:41,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:41,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1996387262, now seen corresponding path program 1 times [2020-12-22 05:59:41,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:41,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053414095] [2020-12-22 05:59:41,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:41,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:41,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053414095] [2020-12-22 05:59:41,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:41,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:41,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115245115] [2020-12-22 05:59:41,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:41,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:41,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:41,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:41,765 INFO L87 Difference]: Start difference. First operand 5210 states and 9778 transitions. Second operand 5 states. [2020-12-22 05:59:44,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:44,166 INFO L93 Difference]: Finished difference Result 20931 states and 39209 transitions. [2020-12-22 05:59:44,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:59:44,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-12-22 05:59:44,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:44,188 INFO L225 Difference]: With dead ends: 20931 [2020-12-22 05:59:44,188 INFO L226 Difference]: Without dead ends: 15797 [2020-12-22 05:59:44,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:59:44,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15797 states. [2020-12-22 05:59:44,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15797 to 5224. [2020-12-22 05:59:44,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5224 states. [2020-12-22 05:59:44,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5224 states to 5224 states and 9792 transitions. [2020-12-22 05:59:44,493 INFO L78 Accepts]: Start accepts. Automaton has 5224 states and 9792 transitions. Word has length 75 [2020-12-22 05:59:44,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:44,493 INFO L481 AbstractCegarLoop]: Abstraction has 5224 states and 9792 transitions. [2020-12-22 05:59:44,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:44,493 INFO L276 IsEmpty]: Start isEmpty. Operand 5224 states and 9792 transitions. [2020-12-22 05:59:44,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 05:59:44,496 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:44,496 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] [2020-12-22 05:59:44,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 05:59:44,496 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:44,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:44,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1669216304, now seen corresponding path program 1 times [2020-12-22 05:59:44,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:44,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532257198] [2020-12-22 05:59:44,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:44,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532257198] [2020-12-22 05:59:44,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:44,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:44,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35580671] [2020-12-22 05:59:44,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:44,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:44,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:44,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:44,561 INFO L87 Difference]: Start difference. First operand 5224 states and 9792 transitions. Second operand 4 states. [2020-12-22 05:59:46,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:46,811 INFO L93 Difference]: Finished difference Result 15451 states and 28868 transitions. [2020-12-22 05:59:46,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:46,812 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-12-22 05:59:46,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:46,829 INFO L225 Difference]: With dead ends: 15451 [2020-12-22 05:59:46,829 INFO L226 Difference]: Without dead ends: 10290 [2020-12-22 05:59:46,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:46,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10290 states. [2020-12-22 05:59:47,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10290 to 6646. [2020-12-22 05:59:47,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6646 states. [2020-12-22 05:59:47,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6646 states to 6646 states and 12320 transitions. [2020-12-22 05:59:47,221 INFO L78 Accepts]: Start accepts. Automaton has 6646 states and 12320 transitions. Word has length 76 [2020-12-22 05:59:47,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:47,221 INFO L481 AbstractCegarLoop]: Abstraction has 6646 states and 12320 transitions. [2020-12-22 05:59:47,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:47,221 INFO L276 IsEmpty]: Start isEmpty. Operand 6646 states and 12320 transitions. [2020-12-22 05:59:47,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 05:59:47,223 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:47,223 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] [2020-12-22 05:59:47,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 05:59:47,224 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:47,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:47,224 INFO L82 PathProgramCache]: Analyzing trace with hash -688334952, now seen corresponding path program 1 times [2020-12-22 05:59:47,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:47,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175415254] [2020-12-22 05:59:47,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:47,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:47,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175415254] [2020-12-22 05:59:47,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:47,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:47,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848531269] [2020-12-22 05:59:47,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:47,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:47,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:47,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:47,295 INFO L87 Difference]: Start difference. First operand 6646 states and 12320 transitions. Second operand 5 states. [2020-12-22 05:59:49,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:49,305 INFO L93 Difference]: Finished difference Result 43958 states and 81859 transitions. [2020-12-22 05:59:49,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:49,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-12-22 05:59:49,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:49,351 INFO L225 Difference]: With dead ends: 43958 [2020-12-22 05:59:49,351 INFO L226 Difference]: Without dead ends: 37384 [2020-12-22 05:59:49,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:59:49,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37384 states. [2020-12-22 05:59:49,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37384 to 10546. [2020-12-22 05:59:49,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10546 states. [2020-12-22 05:59:49,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10546 states to 10546 states and 19586 transitions. [2020-12-22 05:59:49,982 INFO L78 Accepts]: Start accepts. Automaton has 10546 states and 19586 transitions. Word has length 78 [2020-12-22 05:59:49,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:49,983 INFO L481 AbstractCegarLoop]: Abstraction has 10546 states and 19586 transitions. [2020-12-22 05:59:49,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:49,983 INFO L276 IsEmpty]: Start isEmpty. Operand 10546 states and 19586 transitions. [2020-12-22 05:59:49,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 05:59:49,984 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:49,985 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] [2020-12-22 05:59:49,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 05:59:49,985 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:49,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:49,985 INFO L82 PathProgramCache]: Analyzing trace with hash -822348458, now seen corresponding path program 1 times [2020-12-22 05:59:49,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:49,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678437220] [2020-12-22 05:59:49,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:50,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:50,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678437220] [2020-12-22 05:59:50,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:50,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:50,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503941034] [2020-12-22 05:59:50,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:50,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:50,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:50,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:50,055 INFO L87 Difference]: Start difference. First operand 10546 states and 19586 transitions. Second operand 4 states. [2020-12-22 05:59:51,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:51,723 INFO L93 Difference]: Finished difference Result 31709 states and 58941 transitions. [2020-12-22 05:59:51,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:51,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-22 05:59:51,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:51,754 INFO L225 Difference]: With dead ends: 31709 [2020-12-22 05:59:51,754 INFO L226 Difference]: Without dead ends: 25303 [2020-12-22 05:59:51,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:51,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25303 states. [2020-12-22 05:59:52,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25303 to 16217. [2020-12-22 05:59:52,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16217 states. [2020-12-22 05:59:52,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16217 states to 16217 states and 30124 transitions. [2020-12-22 05:59:52,582 INFO L78 Accepts]: Start accepts. Automaton has 16217 states and 30124 transitions. Word has length 78 [2020-12-22 05:59:52,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:52,583 INFO L481 AbstractCegarLoop]: Abstraction has 16217 states and 30124 transitions. [2020-12-22 05:59:52,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:52,583 INFO L276 IsEmpty]: Start isEmpty. Operand 16217 states and 30124 transitions. [2020-12-22 05:59:52,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 05:59:52,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:52,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:52,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 05:59:52,586 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:52,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:52,587 INFO L82 PathProgramCache]: Analyzing trace with hash 988763232, now seen corresponding path program 1 times [2020-12-22 05:59:52,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:52,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985655465] [2020-12-22 05:59:52,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:52,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:52,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985655465] [2020-12-22 05:59:52,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:52,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:52,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176365359] [2020-12-22 05:59:52,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:52,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:52,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:52,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:52,666 INFO L87 Difference]: Start difference. First operand 16217 states and 30124 transitions. Second operand 4 states. [2020-12-22 05:59:54,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:54,204 INFO L93 Difference]: Finished difference Result 37479 states and 69568 transitions. [2020-12-22 05:59:54,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:54,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-12-22 05:59:54,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:54,245 INFO L225 Difference]: With dead ends: 37479 [2020-12-22 05:59:54,246 INFO L226 Difference]: Without dead ends: 25649 [2020-12-22 05:59:54,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:54,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25649 states. [2020-12-22 05:59:55,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25649 to 16237. [2020-12-22 05:59:55,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16237 states. [2020-12-22 05:59:55,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16237 states to 16237 states and 30132 transitions. [2020-12-22 05:59:55,062 INFO L78 Accepts]: Start accepts. Automaton has 16237 states and 30132 transitions. Word has length 80 [2020-12-22 05:59:55,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:55,063 INFO L481 AbstractCegarLoop]: Abstraction has 16237 states and 30132 transitions. [2020-12-22 05:59:55,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:55,063 INFO L276 IsEmpty]: Start isEmpty. Operand 16237 states and 30132 transitions. [2020-12-22 05:59:55,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 05:59:55,066 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:55,066 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] [2020-12-22 05:59:55,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 05:59:55,066 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:55,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:55,067 INFO L82 PathProgramCache]: Analyzing trace with hash -948934775, now seen corresponding path program 1 times [2020-12-22 05:59:55,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:55,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168221134] [2020-12-22 05:59:55,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:55,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:55,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168221134] [2020-12-22 05:59:55,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:55,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:59:55,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807921923] [2020-12-22 05:59:55,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:59:55,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:55,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:59:55,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:59:55,157 INFO L87 Difference]: Start difference. First operand 16237 states and 30132 transitions. Second operand 7 states. [2020-12-22 05:59:57,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:57,911 INFO L93 Difference]: Finished difference Result 49796 states and 92400 transitions. [2020-12-22 05:59:57,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:59:57,912 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-12-22 05:59:57,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:57,972 INFO L225 Difference]: With dead ends: 49796 [2020-12-22 05:59:57,972 INFO L226 Difference]: Without dead ends: 37724 [2020-12-22 05:59:57,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:59:58,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37724 states. [2020-12-22 05:59:59,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37724 to 16249. [2020-12-22 05:59:59,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16249 states. [2020-12-22 05:59:59,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16249 states to 16249 states and 30133 transitions. [2020-12-22 05:59:59,080 INFO L78 Accepts]: Start accepts. Automaton has 16249 states and 30133 transitions. Word has length 86 [2020-12-22 05:59:59,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:59,080 INFO L481 AbstractCegarLoop]: Abstraction has 16249 states and 30133 transitions. [2020-12-22 05:59:59,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:59:59,081 INFO L276 IsEmpty]: Start isEmpty. Operand 16249 states and 30133 transitions. [2020-12-22 05:59:59,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 05:59:59,084 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:59,084 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] [2020-12-22 05:59:59,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 05:59:59,084 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:59,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:59,085 INFO L82 PathProgramCache]: Analyzing trace with hash -730080057, now seen corresponding path program 1 times [2020-12-22 05:59:59,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:59,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45056759] [2020-12-22 05:59:59,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:59,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:59,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45056759] [2020-12-22 05:59:59,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:59,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:59,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216258579] [2020-12-22 05:59:59,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:59,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:59,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:59,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:59,158 INFO L87 Difference]: Start difference. First operand 16249 states and 30133 transitions. Second operand 5 states. [2020-12-22 06:00:00,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:00,455 INFO L93 Difference]: Finished difference Result 28102 states and 52107 transitions. [2020-12-22 06:00:00,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:00,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-12-22 06:00:00,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:00,475 INFO L225 Difference]: With dead ends: 28102 [2020-12-22 06:00:00,476 INFO L226 Difference]: Without dead ends: 16276 [2020-12-22 06:00:00,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:00:00,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16276 states. [2020-12-22 06:00:01,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16276 to 16249. [2020-12-22 06:00:01,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16249 states. [2020-12-22 06:00:01,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16249 states to 16249 states and 30094 transitions. [2020-12-22 06:00:01,463 INFO L78 Accepts]: Start accepts. Automaton has 16249 states and 30094 transitions. Word has length 86 [2020-12-22 06:00:01,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:01,463 INFO L481 AbstractCegarLoop]: Abstraction has 16249 states and 30094 transitions. [2020-12-22 06:00:01,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:01,463 INFO L276 IsEmpty]: Start isEmpty. Operand 16249 states and 30094 transitions. [2020-12-22 06:00:01,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 06:00:01,471 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:01,472 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] [2020-12-22 06:00:01,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:00:01,472 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:01,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:01,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1316886071, now seen corresponding path program 1 times [2020-12-22 06:00:01,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:01,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096461519] [2020-12-22 06:00:01,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:01,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:01,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096461519] [2020-12-22 06:00:01,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:01,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:00:01,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149590677] [2020-12-22 06:00:01,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:01,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:01,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:01,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:01,552 INFO L87 Difference]: Start difference. First operand 16249 states and 30094 transitions. Second operand 3 states. [2020-12-22 06:00:02,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:02,641 INFO L93 Difference]: Finished difference Result 30569 states and 56618 transitions. [2020-12-22 06:00:02,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:02,642 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-22 06:00:02,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:02,661 INFO L225 Difference]: With dead ends: 30569 [2020-12-22 06:00:02,662 INFO L226 Difference]: Without dead ends: 16207 [2020-12-22 06:00:02,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:02,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16207 states. [2020-12-22 06:00:03,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16207 to 16207. [2020-12-22 06:00:03,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16207 states. [2020-12-22 06:00:03,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16207 states to 16207 states and 30012 transitions. [2020-12-22 06:00:03,702 INFO L78 Accepts]: Start accepts. Automaton has 16207 states and 30012 transitions. Word has length 86 [2020-12-22 06:00:03,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:03,702 INFO L481 AbstractCegarLoop]: Abstraction has 16207 states and 30012 transitions. [2020-12-22 06:00:03,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:03,703 INFO L276 IsEmpty]: Start isEmpty. Operand 16207 states and 30012 transitions. [2020-12-22 06:00:03,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 06:00:03,706 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:03,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:03,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:00:03,706 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 06:00:03,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:03,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1846401811, now seen corresponding path program 1 times [2020-12-22 06:00:03,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:03,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502463380] [2020-12-22 06:00:03,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:03,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:03,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502463380] [2020-12-22 06:00:03,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:03,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:03,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904543236] [2020-12-22 06:00:03,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:03,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:03,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:03,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:03,797 INFO L87 Difference]: Start difference. First operand 16207 states and 30012 transitions. Second operand 5 states. [2020-12-22 06:00:06,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:06,486 INFO L93 Difference]: Finished difference Result 53509 states and 99218 transitions. [2020-12-22 06:00:06,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:06,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-12-22 06:00:06,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:06,539 INFO L225 Difference]: With dead ends: 53509 [2020-12-22 06:00:06,539 INFO L226 Difference]: Without dead ends: 41730 [2020-12-22 06:00:06,554 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 06:00:06,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41730 states. [2020-12-22 06:00:07,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41730 to 16207. [2020-12-22 06:00:07,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16207 states. [2020-12-22 06:00:07,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16207 states to 16207 states and 29992 transitions. [2020-12-22 06:00:07,640 INFO L78 Accepts]: Start accepts. Automaton has 16207 states and 29992 transitions. Word has length 88 [2020-12-22 06:00:07,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:07,641 INFO L481 AbstractCegarLoop]: Abstraction has 16207 states and 29992 transitions. [2020-12-22 06:00:07,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:07,641 INFO L276 IsEmpty]: Start isEmpty. Operand 16207 states and 29992 transitions. [2020-12-22 06:00:07,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 06:00:07,643 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:07,644 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] [2020-12-22 06:00:07,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 06:00:07,644 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 06:00:07,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:07,644 INFO L82 PathProgramCache]: Analyzing trace with hash 2133257835, now seen corresponding path program 1 times [2020-12-22 06:00:07,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:07,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321564232] [2020-12-22 06:00:07,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:07,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:07,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321564232] [2020-12-22 06:00:07,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:07,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:07,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497378445] [2020-12-22 06:00:07,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:07,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:07,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:07,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:07,740 INFO L87 Difference]: Start difference. First operand 16207 states and 29992 transitions. Second operand 5 states. [2020-12-22 06:00:09,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:09,589 INFO L93 Difference]: Finished difference Result 26821 states and 49809 transitions. [2020-12-22 06:00:09,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:09,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-12-22 06:00:09,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:09,631 INFO L225 Difference]: With dead ends: 26821 [2020-12-22 06:00:09,632 INFO L226 Difference]: Without dead ends: 26808 [2020-12-22 06:00:09,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:09,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26808 states. [2020-12-22 06:00:10,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26808 to 16222. [2020-12-22 06:00:10,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16222 states. [2020-12-22 06:00:10,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16222 states to 16222 states and 30007 transitions. [2020-12-22 06:00:10,696 INFO L78 Accepts]: Start accepts. Automaton has 16222 states and 30007 transitions. Word has length 88 [2020-12-22 06:00:10,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:10,696 INFO L481 AbstractCegarLoop]: Abstraction has 16222 states and 30007 transitions. [2020-12-22 06:00:10,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:10,696 INFO L276 IsEmpty]: Start isEmpty. Operand 16222 states and 30007 transitions. [2020-12-22 06:00:10,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 06:00:10,703 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:10,703 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] [2020-12-22 06:00:10,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 06:00:10,704 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 06:00:10,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:10,704 INFO L82 PathProgramCache]: Analyzing trace with hash -668119792, now seen corresponding path program 1 times [2020-12-22 06:00:10,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:10,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19681819] [2020-12-22 06:00:10,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:10,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19681819] [2020-12-22 06:00:10,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:10,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:00:10,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937670305] [2020-12-22 06:00:10,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:00:10,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:10,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:00:10,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:00:10,798 INFO L87 Difference]: Start difference. First operand 16222 states and 30007 transitions. Second operand 7 states. [2020-12-22 06:00:12,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:12,735 INFO L93 Difference]: Finished difference Result 27860 states and 51449 transitions. [2020-12-22 06:00:12,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 06:00:12,736 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-12-22 06:00:12,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:12,766 INFO L225 Difference]: With dead ends: 27860 [2020-12-22 06:00:12,766 INFO L226 Difference]: Without dead ends: 27847 [2020-12-22 06:00:12,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-12-22 06:00:12,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27847 states. [2020-12-22 06:00:13,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27847 to 16482. [2020-12-22 06:00:13,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16482 states. [2020-12-22 06:00:13,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16482 states to 16482 states and 30398 transitions. [2020-12-22 06:00:13,957 INFO L78 Accepts]: Start accepts. Automaton has 16482 states and 30398 transitions. Word has length 90 [2020-12-22 06:00:13,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:13,958 INFO L481 AbstractCegarLoop]: Abstraction has 16482 states and 30398 transitions. [2020-12-22 06:00:13,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:00:13,958 INFO L276 IsEmpty]: Start isEmpty. Operand 16482 states and 30398 transitions. [2020-12-22 06:00:13,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 06:00:13,961 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:13,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:13,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 06:00:13,961 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 06:00:13,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:13,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1664271706, now seen corresponding path program 1 times [2020-12-22 06:00:13,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:13,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433176516] [2020-12-22 06:00:13,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:14,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:14,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433176516] [2020-12-22 06:00:14,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:14,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:14,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58786814] [2020-12-22 06:00:14,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:14,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:14,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:14,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:14,070 INFO L87 Difference]: Start difference. First operand 16482 states and 30398 transitions. Second operand 5 states. [2020-12-22 06:00:16,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:16,857 INFO L93 Difference]: Finished difference Result 41794 states and 76929 transitions. [2020-12-22 06:00:16,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:00:16,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-12-22 06:00:16,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:16,895 INFO L225 Difference]: With dead ends: 41794 [2020-12-22 06:00:16,895 INFO L226 Difference]: Without dead ends: 27299 [2020-12-22 06:00:16,908 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 06:00:16,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27299 states. [2020-12-22 06:00:18,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27299 to 16482. [2020-12-22 06:00:18,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16482 states. [2020-12-22 06:00:18,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16482 states to 16482 states and 30383 transitions. [2020-12-22 06:00:18,074 INFO L78 Accepts]: Start accepts. Automaton has 16482 states and 30383 transitions. Word has length 97 [2020-12-22 06:00:18,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:18,075 INFO L481 AbstractCegarLoop]: Abstraction has 16482 states and 30383 transitions. [2020-12-22 06:00:18,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:18,075 INFO L276 IsEmpty]: Start isEmpty. Operand 16482 states and 30383 transitions. [2020-12-22 06:00:18,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 06:00:18,077 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:18,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:18,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 06:00:18,078 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 06:00:18,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:18,079 INFO L82 PathProgramCache]: Analyzing trace with hash -355351742, now seen corresponding path program 1 times [2020-12-22 06:00:18,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:18,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006676951] [2020-12-22 06:00:18,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:18,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:18,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006676951] [2020-12-22 06:00:18,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:18,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:18,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091215409] [2020-12-22 06:00:18,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:18,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:18,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:18,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:18,152 INFO L87 Difference]: Start difference. First operand 16482 states and 30383 transitions. Second operand 5 states. [2020-12-22 06:00:21,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:21,136 INFO L93 Difference]: Finished difference Result 41220 states and 76027 transitions. [2020-12-22 06:00:21,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:21,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-12-22 06:00:21,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:21,171 INFO L225 Difference]: With dead ends: 41220 [2020-12-22 06:00:21,172 INFO L226 Difference]: Without dead ends: 26556 [2020-12-22 06:00:21,186 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 06:00:21,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26556 states. [2020-12-22 06:00:22,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26556 to 16482. [2020-12-22 06:00:22,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16482 states. [2020-12-22 06:00:22,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16482 states to 16482 states and 30119 transitions. [2020-12-22 06:00:22,511 INFO L78 Accepts]: Start accepts. Automaton has 16482 states and 30119 transitions. Word has length 101 [2020-12-22 06:00:22,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:22,511 INFO L481 AbstractCegarLoop]: Abstraction has 16482 states and 30119 transitions. [2020-12-22 06:00:22,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:22,512 INFO L276 IsEmpty]: Start isEmpty. Operand 16482 states and 30119 transitions. [2020-12-22 06:00:22,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-22 06:00:22,514 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:22,514 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 06:00:22,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 06:00:22,515 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:22,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:22,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1021217847, now seen corresponding path program 1 times [2020-12-22 06:00:22,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:22,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92017762] [2020-12-22 06:00:22,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:22,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:22,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92017762] [2020-12-22 06:00:22,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:22,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:22,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563051807] [2020-12-22 06:00:22,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:22,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:22,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:22,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:22,646 INFO L87 Difference]: Start difference. First operand 16482 states and 30119 transitions. Second operand 5 states. [2020-12-22 06:00:26,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:26,274 INFO L93 Difference]: Finished difference Result 56843 states and 104191 transitions. [2020-12-22 06:00:26,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:26,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-12-22 06:00:26,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:26,327 INFO L225 Difference]: With dead ends: 56843 [2020-12-22 06:00:26,327 INFO L226 Difference]: Without dead ends: 44563 [2020-12-22 06:00:26,340 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 06:00:26,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44563 states. [2020-12-22 06:00:27,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44563 to 16482. [2020-12-22 06:00:27,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16482 states. [2020-12-22 06:00:27,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16482 states to 16482 states and 30105 transitions. [2020-12-22 06:00:27,746 INFO L78 Accepts]: Start accepts. Automaton has 16482 states and 30105 transitions. Word has length 102 [2020-12-22 06:00:27,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:27,746 INFO L481 AbstractCegarLoop]: Abstraction has 16482 states and 30105 transitions. [2020-12-22 06:00:27,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:27,746 INFO L276 IsEmpty]: Start isEmpty. Operand 16482 states and 30105 transitions. [2020-12-22 06:00:27,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-22 06:00:27,749 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:27,749 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] [2020-12-22 06:00:27,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 06:00:27,749 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:27,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:27,750 INFO L82 PathProgramCache]: Analyzing trace with hash 258642984, now seen corresponding path program 1 times [2020-12-22 06:00:27,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:27,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243128683] [2020-12-22 06:00:27,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:27,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:27,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243128683] [2020-12-22 06:00:27,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:27,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:27,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557595507] [2020-12-22 06:00:27,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:27,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:27,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:27,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:27,825 INFO L87 Difference]: Start difference. First operand 16482 states and 30105 transitions. Second operand 5 states. [2020-12-22 06:00:29,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:29,152 INFO L93 Difference]: Finished difference Result 28944 states and 52726 transitions. [2020-12-22 06:00:29,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:29,153 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-12-22 06:00:29,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:29,174 INFO L225 Difference]: With dead ends: 28944 [2020-12-22 06:00:29,175 INFO L226 Difference]: Without dead ends: 16495 [2020-12-22 06:00:29,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:00:29,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16495 states. [2020-12-22 06:00:30,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16495 to 16482. [2020-12-22 06:00:30,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16482 states. [2020-12-22 06:00:30,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16482 states to 16482 states and 29839 transitions. [2020-12-22 06:00:30,435 INFO L78 Accepts]: Start accepts. Automaton has 16482 states and 29839 transitions. Word has length 103 [2020-12-22 06:00:30,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:30,435 INFO L481 AbstractCegarLoop]: Abstraction has 16482 states and 29839 transitions. [2020-12-22 06:00:30,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:30,436 INFO L276 IsEmpty]: Start isEmpty. Operand 16482 states and 29839 transitions. [2020-12-22 06:00:30,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-22 06:00:30,438 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:30,438 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 06:00:30,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 06:00:30,439 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:30,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:30,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1479569835, now seen corresponding path program 1 times [2020-12-22 06:00:30,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:30,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46184743] [2020-12-22 06:00:30,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:30,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:30,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46184743] [2020-12-22 06:00:30,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:30,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:30,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384087358] [2020-12-22 06:00:30,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:30,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:30,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:30,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:30,569 INFO L87 Difference]: Start difference. First operand 16482 states and 29839 transitions. Second operand 5 states. [2020-12-22 06:00:33,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:33,461 INFO L93 Difference]: Finished difference Result 43157 states and 78416 transitions. [2020-12-22 06:00:33,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:33,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-12-22 06:00:33,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:33,498 INFO L225 Difference]: With dead ends: 43157 [2020-12-22 06:00:33,499 INFO L226 Difference]: Without dead ends: 31145 [2020-12-22 06:00:33,509 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 06:00:33,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31145 states. [2020-12-22 06:00:34,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31145 to 16494. [2020-12-22 06:00:34,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16494 states. [2020-12-22 06:00:34,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16494 states to 16494 states and 29836 transitions. [2020-12-22 06:00:34,796 INFO L78 Accepts]: Start accepts. Automaton has 16494 states and 29836 transitions. Word has length 104 [2020-12-22 06:00:34,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:34,797 INFO L481 AbstractCegarLoop]: Abstraction has 16494 states and 29836 transitions. [2020-12-22 06:00:34,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:34,797 INFO L276 IsEmpty]: Start isEmpty. Operand 16494 states and 29836 transitions. [2020-12-22 06:00:34,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-22 06:00:34,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:34,800 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 06:00:34,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 06:00:34,800 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:34,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:34,801 INFO L82 PathProgramCache]: Analyzing trace with hash 115998695, now seen corresponding path program 1 times [2020-12-22 06:00:34,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:34,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829018271] [2020-12-22 06:00:34,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:34,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:34,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829018271] [2020-12-22 06:00:34,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:34,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:00:34,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925469325] [2020-12-22 06:00:34,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:00:34,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:34,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:00:34,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:00:34,910 INFO L87 Difference]: Start difference. First operand 16494 states and 29836 transitions. Second operand 7 states. [2020-12-22 06:00:37,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:37,091 INFO L93 Difference]: Finished difference Result 28141 states and 51032 transitions. [2020-12-22 06:00:37,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:37,092 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-12-22 06:00:37,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:37,130 INFO L225 Difference]: With dead ends: 28141 [2020-12-22 06:00:37,130 INFO L226 Difference]: Without dead ends: 28128 [2020-12-22 06:00:37,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:00:37,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28128 states. [2020-12-22 06:00:38,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28128 to 16524. [2020-12-22 06:00:38,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16524 states. [2020-12-22 06:00:38,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16524 states to 16524 states and 29861 transitions. [2020-12-22 06:00:38,459 INFO L78 Accepts]: Start accepts. Automaton has 16524 states and 29861 transitions. Word has length 104 [2020-12-22 06:00:38,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:38,460 INFO L481 AbstractCegarLoop]: Abstraction has 16524 states and 29861 transitions. [2020-12-22 06:00:38,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:00:38,460 INFO L276 IsEmpty]: Start isEmpty. Operand 16524 states and 29861 transitions. [2020-12-22 06:00:38,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-22 06:00:38,463 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:38,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:38,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 06:00:38,464 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:38,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:38,464 INFO L82 PathProgramCache]: Analyzing trace with hash 541712043, now seen corresponding path program 1 times [2020-12-22 06:00:38,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:38,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774421670] [2020-12-22 06:00:38,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:38,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:38,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774421670] [2020-12-22 06:00:38,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:38,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:38,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380449597] [2020-12-22 06:00:38,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:38,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:38,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:38,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:38,558 INFO L87 Difference]: Start difference. First operand 16524 states and 29861 transitions. Second operand 5 states. [2020-12-22 06:00:45,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:45,292 INFO L93 Difference]: Finished difference Result 94187 states and 171850 transitions. [2020-12-22 06:00:45,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:45,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-12-22 06:00:45,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:45,393 INFO L225 Difference]: With dead ends: 94187 [2020-12-22 06:00:45,394 INFO L226 Difference]: Without dead ends: 79623 [2020-12-22 06:00:45,415 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 06:00:45,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79623 states. [2020-12-22 06:00:48,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79623 to 33022. [2020-12-22 06:00:48,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33022 states. [2020-12-22 06:00:48,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33022 states to 33022 states and 59688 transitions. [2020-12-22 06:00:48,596 INFO L78 Accepts]: Start accepts. Automaton has 33022 states and 59688 transitions. Word has length 120 [2020-12-22 06:00:48,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:48,596 INFO L481 AbstractCegarLoop]: Abstraction has 33022 states and 59688 transitions. [2020-12-22 06:00:48,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:48,597 INFO L276 IsEmpty]: Start isEmpty. Operand 33022 states and 59688 transitions. [2020-12-22 06:00:48,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-22 06:00:48,603 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:48,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:48,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 06:00:48,606 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:48,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:48,607 INFO L82 PathProgramCache]: Analyzing trace with hash 396054011, now seen corresponding path program 1 times [2020-12-22 06:00:48,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:48,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595420768] [2020-12-22 06:00:48,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:48,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:48,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595420768] [2020-12-22 06:00:48,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:48,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:00:48,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311706014] [2020-12-22 06:00:48,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:00:48,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:48,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:00:48,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:48,673 INFO L87 Difference]: Start difference. First operand 33022 states and 59688 transitions. Second operand 3 states. [2020-12-22 06:00:53,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:53,284 INFO L93 Difference]: Finished difference Result 82752 states and 149404 transitions. [2020-12-22 06:00:53,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:00:53,284 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2020-12-22 06:00:53,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:53,350 INFO L225 Difference]: With dead ends: 82752 [2020-12-22 06:00:53,350 INFO L226 Difference]: Without dead ends: 53327 [2020-12-22 06:00:53,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:00:53,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53327 states. [2020-12-22 06:00:56,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53327 to 32326. [2020-12-22 06:00:56,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32326 states. [2020-12-22 06:00:56,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32326 states to 32326 states and 58254 transitions. [2020-12-22 06:00:56,242 INFO L78 Accepts]: Start accepts. Automaton has 32326 states and 58254 transitions. Word has length 121 [2020-12-22 06:00:56,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:56,243 INFO L481 AbstractCegarLoop]: Abstraction has 32326 states and 58254 transitions. [2020-12-22 06:00:56,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:00:56,243 INFO L276 IsEmpty]: Start isEmpty. Operand 32326 states and 58254 transitions. [2020-12-22 06:00:56,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-22 06:00:56,252 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:56,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:56,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 06:00:56,253 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:56,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:56,253 INFO L82 PathProgramCache]: Analyzing trace with hash -457959647, now seen corresponding path program 1 times [2020-12-22 06:00:56,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:56,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195291826] [2020-12-22 06:00:56,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:56,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:56,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195291826] [2020-12-22 06:00:56,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:56,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:56,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011182649] [2020-12-22 06:00:56,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:56,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:56,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:56,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:56,315 INFO L87 Difference]: Start difference. First operand 32326 states and 58254 transitions. Second operand 5 states. [2020-12-22 06:00:58,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:58,893 INFO L93 Difference]: Finished difference Result 47923 states and 86379 transitions. [2020-12-22 06:00:58,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:00:58,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-12-22 06:00:58,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:58,933 INFO L225 Difference]: With dead ends: 47923 [2020-12-22 06:00:58,934 INFO L226 Difference]: Without dead ends: 31627 [2020-12-22 06:00:58,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:00:58,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31627 states. [2020-12-22 06:01:01,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31627 to 31627. [2020-12-22 06:01:01,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31627 states. [2020-12-22 06:01:01,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31627 states to 31627 states and 57015 transitions. [2020-12-22 06:01:01,682 INFO L78 Accepts]: Start accepts. Automaton has 31627 states and 57015 transitions. Word has length 121 [2020-12-22 06:01:01,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:01,682 INFO L481 AbstractCegarLoop]: Abstraction has 31627 states and 57015 transitions. [2020-12-22 06:01:01,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:01,683 INFO L276 IsEmpty]: Start isEmpty. Operand 31627 states and 57015 transitions. [2020-12-22 06:01:01,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-22 06:01:01,691 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:01,691 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] [2020-12-22 06:01:01,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-22 06:01:01,691 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:01,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:01,692 INFO L82 PathProgramCache]: Analyzing trace with hash -93958885, now seen corresponding path program 1 times [2020-12-22 06:01:01,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:01,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344995509] [2020-12-22 06:01:01,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:01,826 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 06:01:01,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344995509] [2020-12-22 06:01:01,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:01,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:01:01,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393688151] [2020-12-22 06:01:01,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:01:01,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:01,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:01:01,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:01:01,830 INFO L87 Difference]: Start difference. First operand 31627 states and 57015 transitions. Second operand 6 states. [2020-12-22 06:01:10,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:10,471 INFO L93 Difference]: Finished difference Result 101298 states and 183371 transitions. [2020-12-22 06:01:10,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 06:01:10,471 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-12-22 06:01:10,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:10,697 INFO L225 Difference]: With dead ends: 101298 [2020-12-22 06:01:10,698 INFO L226 Difference]: Without dead ends: 72606 [2020-12-22 06:01:10,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-12-22 06:01:10,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72606 states. [2020-12-22 06:01:14,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72606 to 48511. [2020-12-22 06:01:14,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48511 states. [2020-12-22 06:01:14,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48511 states to 48511 states and 88086 transitions. [2020-12-22 06:01:14,735 INFO L78 Accepts]: Start accepts. Automaton has 48511 states and 88086 transitions. Word has length 139 [2020-12-22 06:01:14,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:14,735 INFO L481 AbstractCegarLoop]: Abstraction has 48511 states and 88086 transitions. [2020-12-22 06:01:14,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:01:14,735 INFO L276 IsEmpty]: Start isEmpty. Operand 48511 states and 88086 transitions. [2020-12-22 06:01:14,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-12-22 06:01:14,746 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:14,746 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] [2020-12-22 06:01:14,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 06:01:14,747 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:14,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:14,747 INFO L82 PathProgramCache]: Analyzing trace with hash 456933250, now seen corresponding path program 1 times [2020-12-22 06:01:14,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:14,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541919950] [2020-12-22 06:01:14,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:14,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:01:14,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541919950] [2020-12-22 06:01:14,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:14,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:01:14,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926262588] [2020-12-22 06:01:14,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:01:14,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:14,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:01:14,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:14,840 INFO L87 Difference]: Start difference. First operand 48511 states and 88086 transitions. Second operand 5 states. [2020-12-22 06:01:22,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:22,728 INFO L93 Difference]: Finished difference Result 137352 states and 249461 transitions. [2020-12-22 06:01:22,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:01:22,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-12-22 06:01:22,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:22,886 INFO L225 Difference]: With dead ends: 137352 [2020-12-22 06:01:22,886 INFO L226 Difference]: Without dead ends: 96901 [2020-12-22 06:01:22,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:01:23,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96901 states. [2020-12-22 06:01:30,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96901 to 96901. [2020-12-22 06:01:30,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96901 states. [2020-12-22 06:01:31,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96901 states to 96901 states and 175986 transitions. [2020-12-22 06:01:31,158 INFO L78 Accepts]: Start accepts. Automaton has 96901 states and 175986 transitions. Word has length 140 [2020-12-22 06:01:31,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:31,159 INFO L481 AbstractCegarLoop]: Abstraction has 96901 states and 175986 transitions. [2020-12-22 06:01:31,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:31,159 INFO L276 IsEmpty]: Start isEmpty. Operand 96901 states and 175986 transitions. [2020-12-22 06:01:31,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-12-22 06:01:31,185 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:31,185 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] [2020-12-22 06:01:31,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-22 06:01:31,185 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:31,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:31,186 INFO L82 PathProgramCache]: Analyzing trace with hash 428026876, now seen corresponding path program 1 times [2020-12-22 06:01:31,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:31,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630130092] [2020-12-22 06:01:31,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:31,276 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 06:01:31,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630130092] [2020-12-22 06:01:31,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:31,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:01:31,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650185557] [2020-12-22 06:01:31,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:01:31,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:31,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:01:31,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:01:31,278 INFO L87 Difference]: Start difference. First operand 96901 states and 175986 transitions. Second operand 6 states. [2020-12-22 06:01:49,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:49,430 INFO L93 Difference]: Finished difference Result 270759 states and 491302 transitions. [2020-12-22 06:01:49,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 06:01:49,430 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2020-12-22 06:01:49,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:49,779 INFO L225 Difference]: With dead ends: 270759 [2020-12-22 06:01:49,780 INFO L226 Difference]: Without dead ends: 179736 [2020-12-22 06:01:49,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-12-22 06:01:50,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179736 states. [2020-12-22 06:02:01,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179736 to 130643. [2020-12-22 06:02:01,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130643 states. [2020-12-22 06:02:01,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130643 states to 130643 states and 237970 transitions. [2020-12-22 06:02:01,587 INFO L78 Accepts]: Start accepts. Automaton has 130643 states and 237970 transitions. Word has length 140 [2020-12-22 06:02:01,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:01,587 INFO L481 AbstractCegarLoop]: Abstraction has 130643 states and 237970 transitions. [2020-12-22 06:02:01,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:01,587 INFO L276 IsEmpty]: Start isEmpty. Operand 130643 states and 237970 transitions. [2020-12-22 06:02:01,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-22 06:02:01,614 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:01,614 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] [2020-12-22 06:02:01,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-22 06:02:01,614 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:01,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:01,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1344246038, now seen corresponding path program 1 times [2020-12-22 06:02:01,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:01,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070532548] [2020-12-22 06:02:01,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:01,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:02:01,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070532548] [2020-12-22 06:02:01,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:01,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:02:01,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122564052] [2020-12-22 06:02:01,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:02:01,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:01,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:02:01,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:01,737 INFO L87 Difference]: Start difference. First operand 130643 states and 237970 transitions. Second operand 5 states.