/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/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:49:56,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:49:56,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:49:56,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:49:56,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:49:56,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:49:56,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:49:56,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:49:56,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:49:56,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:49:56,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:49:56,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:49:56,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:49:56,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:49:56,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:49:56,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:49:56,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:49:56,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:49:56,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:49:56,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:49:56,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:49:56,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:49:56,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:49:56,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:49:56,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:49:56,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:49:56,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:49:56,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:49:56,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:49:56,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:49:56,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:49:56,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:49:56,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:49:56,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:49:56,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:49:56,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:49:56,608 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:49:56,645 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:49:56,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:49:56,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:49:56,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:49:56,649 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:49:56,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:49:56,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:49:56,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:49:56,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:49:56,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:49:56,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:49:56,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:49:56,651 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:49:56,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:49:56,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:49:56,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:49:56,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:49:56,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:49:56,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:49:56,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:49:56,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:49:56,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:49:56,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:49:56,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:49:56,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:49:56,655 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:49:57,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:49:57,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:49:57,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:49:57,225 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:49:57,226 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:49:57,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-12-22 08:49:57,322 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/307b515e4/011286d773f743e2a391e3856df4ddc5/FLAG109273661 [2020-12-22 08:49:58,158 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:49:58,159 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-12-22 08:49:58,186 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/307b515e4/011286d773f743e2a391e3856df4ddc5/FLAG109273661 [2020-12-22 08:49:58,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/307b515e4/011286d773f743e2a391e3856df4ddc5 [2020-12-22 08:49:58,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:49:58,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:49:58,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:49:58,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:49:58,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:49:58,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:49:58" (1/1) ... [2020-12-22 08:49:58,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2386f43c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:58, skipping insertion in model container [2020-12-22 08:49:58,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:49:58" (1/1) ... [2020-12-22 08:49:58,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:49:58,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:49:58,822 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/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6292,6305] [2020-12-22 08:49:58,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:49:58,919 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:49:59,033 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/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6292,6305] [2020-12-22 08:49:59,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:49:59,088 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:49:59,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:59 WrapperNode [2020-12-22 08:49:59,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:49:59,094 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:49:59,094 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:49:59,094 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:49:59,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:59" (1/1) ... [2020-12-22 08:49:59,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:59" (1/1) ... [2020-12-22 08:49:59,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:49:59,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:49:59,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:49:59,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:49:59,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:59" (1/1) ... [2020-12-22 08:49:59,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:59" (1/1) ... [2020-12-22 08:49:59,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:59" (1/1) ... [2020-12-22 08:49:59,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:59" (1/1) ... [2020-12-22 08:49:59,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:59" (1/1) ... [2020-12-22 08:49:59,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:59" (1/1) ... [2020-12-22 08:49:59,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:59" (1/1) ... [2020-12-22 08:49:59,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:49:59,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:49:59,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:49:59,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:49:59,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:59" (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 08:49:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:49:59,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:49:59,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:49:59,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:50:00,388 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:50:00,392 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:50:00,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:50:00 BoogieIcfgContainer [2020-12-22 08:50:00,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:50:00,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:50:00,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:50:00,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:50:00,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:49:58" (1/3) ... [2020-12-22 08:50:00,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40a6e069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:50:00, skipping insertion in model container [2020-12-22 08:50:00,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:49:59" (2/3) ... [2020-12-22 08:50:00,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40a6e069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:50:00, skipping insertion in model container [2020-12-22 08:50:00,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:50:00" (3/3) ... [2020-12-22 08:50:00,418 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-12-22 08:50:00,426 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:50:00,433 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:50:00,464 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:50:00,516 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:50:00,517 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:50:00,517 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:50:00,517 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:50:00,517 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:50:00,518 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:50:00,518 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:50:00,518 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:50:00,544 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-12-22 08:50:00,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 08:50:00,557 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:50:00,559 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] [2020-12-22 08:50:00,559 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:50:00,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:50:00,570 INFO L82 PathProgramCache]: Analyzing trace with hash -866113193, now seen corresponding path program 1 times [2020-12-22 08:50:00,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:50:00,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126979997] [2020-12-22 08:50:00,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:50:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:50:01,200 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 08:50:01,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126979997] [2020-12-22 08:50:01,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:50:01,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:50:01,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451061011] [2020-12-22 08:50:01,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:50:01,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:50:01,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:50:01,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:50:01,243 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 3 states. [2020-12-22 08:50:01,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:50:01,406 INFO L93 Difference]: Finished difference Result 254 states and 416 transitions. [2020-12-22 08:50:01,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:50:01,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-22 08:50:01,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:50:01,448 INFO L225 Difference]: With dead ends: 254 [2020-12-22 08:50:01,448 INFO L226 Difference]: Without dead ends: 175 [2020-12-22 08:50:01,453 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 08:50:01,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-12-22 08:50:01,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2020-12-22 08:50:01,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-12-22 08:50:01,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 250 transitions. [2020-12-22 08:50:01,563 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 250 transitions. Word has length 72 [2020-12-22 08:50:01,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:50:01,564 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 250 transitions. [2020-12-22 08:50:01,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:50:01,565 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 250 transitions. [2020-12-22 08:50:01,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 08:50:01,568 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:50:01,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:50:01,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:50:01,569 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:50:01,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:50:01,570 INFO L82 PathProgramCache]: Analyzing trace with hash -566031041, now seen corresponding path program 1 times [2020-12-22 08:50:01,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:50:01,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534350287] [2020-12-22 08:50:01,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:50:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:50:01,736 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 08:50:01,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534350287] [2020-12-22 08:50:01,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:50:01,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:50:01,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338552784] [2020-12-22 08:50:01,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:50:01,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:50:01,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:50:01,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:50:01,743 INFO L87 Difference]: Start difference. First operand 173 states and 250 transitions. Second operand 3 states. [2020-12-22 08:50:01,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:50:01,846 INFO L93 Difference]: Finished difference Result 417 states and 638 transitions. [2020-12-22 08:50:01,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:50:01,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 08:50:01,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:50:01,854 INFO L225 Difference]: With dead ends: 417 [2020-12-22 08:50:01,858 INFO L226 Difference]: Without dead ends: 287 [2020-12-22 08:50:01,862 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 08:50:01,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-22 08:50:01,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2020-12-22 08:50:01,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2020-12-22 08:50:01,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 428 transitions. [2020-12-22 08:50:01,914 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 428 transitions. Word has length 73 [2020-12-22 08:50:01,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:50:01,914 INFO L481 AbstractCegarLoop]: Abstraction has 285 states and 428 transitions. [2020-12-22 08:50:01,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:50:01,915 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 428 transitions. [2020-12-22 08:50:01,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 08:50:01,917 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:50:01,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:50:01,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:50:01,918 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:50:01,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:50:01,919 INFO L82 PathProgramCache]: Analyzing trace with hash -739923133, now seen corresponding path program 1 times [2020-12-22 08:50:01,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:50:01,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110828772] [2020-12-22 08:50:01,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:50:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:50:02,057 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 08:50:02,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110828772] [2020-12-22 08:50:02,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:50:02,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:50:02,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574468714] [2020-12-22 08:50:02,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:50:02,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:50:02,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:50:02,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:50:02,061 INFO L87 Difference]: Start difference. First operand 285 states and 428 transitions. Second operand 3 states. [2020-12-22 08:50:02,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:50:02,137 INFO L93 Difference]: Finished difference Result 737 states and 1146 transitions. [2020-12-22 08:50:02,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:50:02,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-22 08:50:02,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:50:02,144 INFO L225 Difference]: With dead ends: 737 [2020-12-22 08:50:02,144 INFO L226 Difference]: Without dead ends: 495 [2020-12-22 08:50:02,147 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 08:50:02,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-12-22 08:50:02,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 493. [2020-12-22 08:50:02,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-12-22 08:50:02,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 756 transitions. [2020-12-22 08:50:02,236 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 756 transitions. Word has length 74 [2020-12-22 08:50:02,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:50:02,239 INFO L481 AbstractCegarLoop]: Abstraction has 493 states and 756 transitions. [2020-12-22 08:50:02,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:50:02,239 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 756 transitions. [2020-12-22 08:50:02,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 08:50:02,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:50:02,246 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 08:50:02,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:50:02,246 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:50:02,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:50:02,248 INFO L82 PathProgramCache]: Analyzing trace with hash 330068461, now seen corresponding path program 1 times [2020-12-22 08:50:02,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:50:02,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009002372] [2020-12-22 08:50:02,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:50:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:50:02,390 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 08:50:02,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009002372] [2020-12-22 08:50:02,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:50:02,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:50:02,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263549980] [2020-12-22 08:50:02,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:50:02,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:50:02,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:50:02,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:50:02,426 INFO L87 Difference]: Start difference. First operand 493 states and 756 transitions. Second operand 3 states. [2020-12-22 08:50:02,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:50:02,545 INFO L93 Difference]: Finished difference Result 1329 states and 2078 transitions. [2020-12-22 08:50:02,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:50:02,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-22 08:50:02,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:50:02,557 INFO L225 Difference]: With dead ends: 1329 [2020-12-22 08:50:02,558 INFO L226 Difference]: Without dead ends: 879 [2020-12-22 08:50:02,561 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 08:50:02,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-12-22 08:50:02,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2020-12-22 08:50:02,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-12-22 08:50:02,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1356 transitions. [2020-12-22 08:50:02,648 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1356 transitions. Word has length 75 [2020-12-22 08:50:02,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:50:02,650 INFO L481 AbstractCegarLoop]: Abstraction has 877 states and 1356 transitions. [2020-12-22 08:50:02,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:50:02,651 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1356 transitions. [2020-12-22 08:50:02,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 08:50:02,657 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:50:02,658 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 08:50:02,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:50:02,658 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:50:02,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:50:02,659 INFO L82 PathProgramCache]: Analyzing trace with hash -298149753, now seen corresponding path program 1 times [2020-12-22 08:50:02,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:50:02,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874939738] [2020-12-22 08:50:02,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:50:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:50:02,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:50:02,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874939738] [2020-12-22 08:50:02,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:50:02,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:50:02,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305390884] [2020-12-22 08:50:02,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:50:02,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:50:02,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:50:02,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:50:02,851 INFO L87 Difference]: Start difference. First operand 877 states and 1356 transitions. Second operand 3 states. [2020-12-22 08:50:02,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:50:02,949 INFO L93 Difference]: Finished difference Result 2417 states and 3774 transitions. [2020-12-22 08:50:02,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:50:02,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-22 08:50:02,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:50:02,961 INFO L225 Difference]: With dead ends: 2417 [2020-12-22 08:50:02,961 INFO L226 Difference]: Without dead ends: 1583 [2020-12-22 08:50:02,964 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 08:50:02,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2020-12-22 08:50:03,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1581. [2020-12-22 08:50:03,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-12-22 08:50:03,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2444 transitions. [2020-12-22 08:50:03,058 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2444 transitions. Word has length 76 [2020-12-22 08:50:03,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:50:03,059 INFO L481 AbstractCegarLoop]: Abstraction has 1581 states and 2444 transitions. [2020-12-22 08:50:03,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:50:03,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2444 transitions. [2020-12-22 08:50:03,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 08:50:03,060 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:50:03,061 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] [2020-12-22 08:50:03,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:50:03,061 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:50:03,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:50:03,062 INFO L82 PathProgramCache]: Analyzing trace with hash -2012894605, now seen corresponding path program 1 times [2020-12-22 08:50:03,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:50:03,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376336939] [2020-12-22 08:50:03,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:50:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:50:03,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:50:03,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376336939] [2020-12-22 08:50:03,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:50:03,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:50:03,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022353570] [2020-12-22 08:50:03,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:50:03,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:50:03,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:50:03,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:50:03,243 INFO L87 Difference]: Start difference. First operand 1581 states and 2444 transitions. Second operand 3 states. [2020-12-22 08:50:03,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:50:03,442 INFO L93 Difference]: Finished difference Result 4401 states and 6830 transitions. [2020-12-22 08:50:03,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:50:03,444 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 08:50:03,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:50:03,461 INFO L225 Difference]: With dead ends: 4401 [2020-12-22 08:50:03,462 INFO L226 Difference]: Without dead ends: 2863 [2020-12-22 08:50:03,466 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 08:50:03,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2020-12-22 08:50:03,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2861. [2020-12-22 08:50:03,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2861 states. [2020-12-22 08:50:03,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 4396 transitions. [2020-12-22 08:50:03,652 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 4396 transitions. Word has length 77 [2020-12-22 08:50:03,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:50:03,652 INFO L481 AbstractCegarLoop]: Abstraction has 2861 states and 4396 transitions. [2020-12-22 08:50:03,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:50:03,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 4396 transitions. [2020-12-22 08:50:03,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:50:03,662 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:50:03,663 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 08:50:03,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:50:03,663 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:50:03,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:50:03,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1910583587, now seen corresponding path program 1 times [2020-12-22 08:50:03,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:50:03,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566703214] [2020-12-22 08:50:03,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:50:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:50:03,852 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 08:50:03,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566703214] [2020-12-22 08:50:03,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:50:03,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:50:03,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660622639] [2020-12-22 08:50:03,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:50:03,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:50:03,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:50:03,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:50:03,856 INFO L87 Difference]: Start difference. First operand 2861 states and 4396 transitions. Second operand 6 states. [2020-12-22 08:50:04,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:50:04,499 INFO L93 Difference]: Finished difference Result 8465 states and 13038 transitions. [2020-12-22 08:50:04,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:50:04,500 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-22 08:50:04,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:50:04,535 INFO L225 Difference]: With dead ends: 8465 [2020-12-22 08:50:04,536 INFO L226 Difference]: Without dead ends: 5647 [2020-12-22 08:50:04,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:50:04,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5647 states. [2020-12-22 08:50:05,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5647 to 5645. [2020-12-22 08:50:05,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5645 states. [2020-12-22 08:50:05,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5645 states to 5645 states and 8652 transitions. [2020-12-22 08:50:05,039 INFO L78 Accepts]: Start accepts. Automaton has 5645 states and 8652 transitions. Word has length 78 [2020-12-22 08:50:05,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:50:05,040 INFO L481 AbstractCegarLoop]: Abstraction has 5645 states and 8652 transitions. [2020-12-22 08:50:05,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:50:05,040 INFO L276 IsEmpty]: Start isEmpty. Operand 5645 states and 8652 transitions. [2020-12-22 08:50:05,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:50:05,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:50:05,041 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 08:50:05,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:50:05,042 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:50:05,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:50:05,043 INFO L82 PathProgramCache]: Analyzing trace with hash -663052834, now seen corresponding path program 1 times [2020-12-22 08:50:05,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:50:05,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738573252] [2020-12-22 08:50:05,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:50:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:50:05,159 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 08:50:05,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738573252] [2020-12-22 08:50:05,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:50:05,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:50:05,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200706488] [2020-12-22 08:50:05,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:50:05,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:50:05,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:50:05,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:50:05,162 INFO L87 Difference]: Start difference. First operand 5645 states and 8652 transitions. Second operand 6 states. [2020-12-22 08:50:06,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:50:06,078 INFO L93 Difference]: Finished difference Result 16785 states and 25742 transitions. [2020-12-22 08:50:06,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:50:06,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-22 08:50:06,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:50:06,143 INFO L225 Difference]: With dead ends: 16785 [2020-12-22 08:50:06,144 INFO L226 Difference]: Without dead ends: 11183 [2020-12-22 08:50:06,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:50:06,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11183 states. [2020-12-22 08:50:07,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11183 to 11181. [2020-12-22 08:50:07,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11181 states. [2020-12-22 08:50:07,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11181 states to 11181 states and 17068 transitions. [2020-12-22 08:50:07,072 INFO L78 Accepts]: Start accepts. Automaton has 11181 states and 17068 transitions. Word has length 78 [2020-12-22 08:50:07,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:50:07,072 INFO L481 AbstractCegarLoop]: Abstraction has 11181 states and 17068 transitions. [2020-12-22 08:50:07,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:50:07,072 INFO L276 IsEmpty]: Start isEmpty. Operand 11181 states and 17068 transitions. [2020-12-22 08:50:07,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:50:07,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:50:07,073 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 08:50:07,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:50:07,074 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:50:07,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:50:07,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1789883929, now seen corresponding path program 1 times [2020-12-22 08:50:07,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:50:07,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411294393] [2020-12-22 08:50:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:50:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:50:07,159 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 08:50:07,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411294393] [2020-12-22 08:50:07,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:50:07,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:50:07,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141181699] [2020-12-22 08:50:07,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:50:07,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:50:07,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:50:07,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:50:07,162 INFO L87 Difference]: Start difference. First operand 11181 states and 17068 transitions. Second operand 5 states. [2020-12-22 08:50:08,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:50:08,083 INFO L93 Difference]: Finished difference Result 22319 states and 34093 transitions. [2020-12-22 08:50:08,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:50:08,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-12-22 08:50:08,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:50:08,147 INFO L225 Difference]: With dead ends: 22319 [2020-12-22 08:50:08,147 INFO L226 Difference]: Without dead ends: 11181 [2020-12-22 08:50:08,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:50:08,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11181 states. [2020-12-22 08:50:09,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11181 to 11181. [2020-12-22 08:50:09,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11181 states. [2020-12-22 08:50:09,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11181 states to 11181 states and 16940 transitions. [2020-12-22 08:50:09,063 INFO L78 Accepts]: Start accepts. Automaton has 11181 states and 16940 transitions. Word has length 78 [2020-12-22 08:50:09,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:50:09,063 INFO L481 AbstractCegarLoop]: Abstraction has 11181 states and 16940 transitions. [2020-12-22 08:50:09,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:50:09,064 INFO L276 IsEmpty]: Start isEmpty. Operand 11181 states and 16940 transitions. [2020-12-22 08:50:09,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:50:09,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:50:09,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:50:09,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:50:09,066 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:50:09,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:50:09,067 INFO L82 PathProgramCache]: Analyzing trace with hash 325812372, now seen corresponding path program 1 times [2020-12-22 08:50:09,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:50:09,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001828954] [2020-12-22 08:50:09,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:50:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:50:09,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:50:09,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001828954] [2020-12-22 08:50:09,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:50:09,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:50:09,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878274266] [2020-12-22 08:50:09,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:50:09,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:50:09,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:50:09,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:50:09,298 INFO L87 Difference]: Start difference. First operand 11181 states and 16940 transitions. Second operand 8 states. [2020-12-22 08:50:16,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:50:16,619 INFO L93 Difference]: Finished difference Result 133699 states and 202807 transitions. [2020-12-22 08:50:16,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 08:50:16,619 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-12-22 08:50:16,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:50:17,075 INFO L225 Difference]: With dead ends: 133699 [2020-12-22 08:50:17,075 INFO L226 Difference]: Without dead ends: 122561 [2020-12-22 08:50:17,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:50:17,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122561 states. [2020-12-22 08:50:20,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122561 to 22317. [2020-12-22 08:50:20,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22317 states. [2020-12-22 08:50:20,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22317 states to 22317 states and 33324 transitions. [2020-12-22 08:50:20,754 INFO L78 Accepts]: Start accepts. Automaton has 22317 states and 33324 transitions. Word has length 78 [2020-12-22 08:50:20,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:50:20,754 INFO L481 AbstractCegarLoop]: Abstraction has 22317 states and 33324 transitions. [2020-12-22 08:50:20,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:50:20,755 INFO L276 IsEmpty]: Start isEmpty. Operand 22317 states and 33324 transitions. [2020-12-22 08:50:20,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 08:50:20,756 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:50:20,756 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 08:50:20,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:50:20,756 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:50:20,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:50:20,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1348742768, now seen corresponding path program 1 times [2020-12-22 08:50:20,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:50:20,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116834490] [2020-12-22 08:50:20,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:50:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:50:20,834 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 08:50:20,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116834490] [2020-12-22 08:50:20,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:50:20,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:50:20,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601296619] [2020-12-22 08:50:20,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:50:20,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:50:20,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:50:20,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:50:20,837 INFO L87 Difference]: Start difference. First operand 22317 states and 33324 transitions. Second operand 3 states. [2020-12-22 08:50:23,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:50:23,113 INFO L93 Difference]: Finished difference Result 50003 states and 74576 transitions. [2020-12-22 08:50:23,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:50:23,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 08:50:23,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:50:23,162 INFO L225 Difference]: With dead ends: 50003 [2020-12-22 08:50:23,162 INFO L226 Difference]: Without dead ends: 27729 [2020-12-22 08:50:23,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 08:50:23,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27729 states. [2020-12-22 08:50:25,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27729 to 27727. [2020-12-22 08:50:25,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27727 states. [2020-12-22 08:50:25,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27727 states to 27727 states and 41102 transitions. [2020-12-22 08:50:25,684 INFO L78 Accepts]: Start accepts. Automaton has 27727 states and 41102 transitions. Word has length 80 [2020-12-22 08:50:25,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:50:25,685 INFO L481 AbstractCegarLoop]: Abstraction has 27727 states and 41102 transitions. [2020-12-22 08:50:25,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:50:25,685 INFO L276 IsEmpty]: Start isEmpty. Operand 27727 states and 41102 transitions. [2020-12-22 08:50:25,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 08:50:25,685 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:50:25,686 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 08:50:25,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:50:25,686 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:50:25,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:50:25,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1327740113, now seen corresponding path program 1 times [2020-12-22 08:50:25,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:50:25,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122970744] [2020-12-22 08:50:25,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:50:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:50:26,044 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 08:50:26,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122970744] [2020-12-22 08:50:26,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:50:26,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:50:26,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444000469] [2020-12-22 08:50:26,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:50:26,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:50:26,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:50:26,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:50:26,046 INFO L87 Difference]: Start difference. First operand 27727 states and 41102 transitions. Second operand 8 states. [2020-12-22 08:50:29,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:50:29,727 INFO L93 Difference]: Finished difference Result 69221 states and 102945 transitions. [2020-12-22 08:50:29,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:50:29,727 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-12-22 08:50:29,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:50:29,774 INFO L225 Difference]: With dead ends: 69221 [2020-12-22 08:50:29,774 INFO L226 Difference]: Without dead ends: 41539 [2020-12-22 08:50:29,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:50:29,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41539 states. [2020-12-22 08:50:32,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41539 to 27727. [2020-12-22 08:50:32,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27727 states. [2020-12-22 08:50:32,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27727 states to 27727 states and 40782 transitions. [2020-12-22 08:50:32,408 INFO L78 Accepts]: Start accepts. Automaton has 27727 states and 40782 transitions. Word has length 80 [2020-12-22 08:50:32,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:50:32,409 INFO L481 AbstractCegarLoop]: Abstraction has 27727 states and 40782 transitions. [2020-12-22 08:50:32,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:50:32,409 INFO L276 IsEmpty]: Start isEmpty. Operand 27727 states and 40782 transitions. [2020-12-22 08:50:32,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:50:32,409 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:50:32,410 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] [2020-12-22 08:50:32,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:50:32,410 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:50:32,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:50:32,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1787820142, now seen corresponding path program 1 times [2020-12-22 08:50:32,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:50:32,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339986105] [2020-12-22 08:50:32,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:50:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:50:32,495 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 08:50:32,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339986105] [2020-12-22 08:50:32,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:50:32,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:50:32,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364821541] [2020-12-22 08:50:32,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:50:32,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:50:32,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:50:32,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:50:32,497 INFO L87 Difference]: Start difference. First operand 27727 states and 40782 transitions. Second operand 5 states. [2020-12-22 08:50:37,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:50:37,497 INFO L93 Difference]: Finished difference Result 52725 states and 77208 transitions. [2020-12-22 08:50:37,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:50:37,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-12-22 08:50:37,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:50:37,563 INFO L225 Difference]: With dead ends: 52725 [2020-12-22 08:50:37,564 INFO L226 Difference]: Without dead ends: 52723 [2020-12-22 08:50:37,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:50:37,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52723 states. [2020-12-22 08:50:40,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52723 to 28751. [2020-12-22 08:50:40,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28751 states. [2020-12-22 08:50:40,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28751 states to 28751 states and 41742 transitions. [2020-12-22 08:50:40,471 INFO L78 Accepts]: Start accepts. Automaton has 28751 states and 41742 transitions. Word has length 81 [2020-12-22 08:50:40,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:50:40,471 INFO L481 AbstractCegarLoop]: Abstraction has 28751 states and 41742 transitions. [2020-12-22 08:50:40,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:50:40,472 INFO L276 IsEmpty]: Start isEmpty. Operand 28751 states and 41742 transitions. [2020-12-22 08:50:40,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 08:50:40,481 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:50:40,482 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2020-12-22 08:50:40,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:50:40,482 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:50:40,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:50:40,483 INFO L82 PathProgramCache]: Analyzing trace with hash 333029362, now seen corresponding path program 1 times [2020-12-22 08:50:40,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:50:40,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678768454] [2020-12-22 08:50:40,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:50:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:50:40,653 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 08:50:40,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678768454] [2020-12-22 08:50:40,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:50:40,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:50:40,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111340097] [2020-12-22 08:50:40,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:50:40,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:50:40,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:50:40,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:50:40,656 INFO L87 Difference]: Start difference. First operand 28751 states and 41742 transitions. Second operand 8 states. [2020-12-22 08:50:59,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:50:59,347 INFO L93 Difference]: Finished difference Result 204557 states and 297029 transitions. [2020-12-22 08:50:59,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:50:59,347 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 08:50:59,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:50:59,653 INFO L225 Difference]: With dead ends: 204557 [2020-12-22 08:50:59,654 INFO L226 Difference]: Without dead ends: 181259 [2020-12-22 08:50:59,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:50:59,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181259 states. [2020-12-22 08:51:07,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181259 to 54783. [2020-12-22 08:51:07,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54783 states. [2020-12-22 08:51:07,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54783 states to 54783 states and 79294 transitions. [2020-12-22 08:51:07,107 INFO L78 Accepts]: Start accepts. Automaton has 54783 states and 79294 transitions. Word has length 111 [2020-12-22 08:51:07,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:51:07,107 INFO L481 AbstractCegarLoop]: Abstraction has 54783 states and 79294 transitions. [2020-12-22 08:51:07,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:51:07,107 INFO L276 IsEmpty]: Start isEmpty. Operand 54783 states and 79294 transitions. [2020-12-22 08:51:07,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 08:51:07,119 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:51:07,119 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2020-12-22 08:51:07,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:51:07,119 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:51:07,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:51:07,120 INFO L82 PathProgramCache]: Analyzing trace with hash -317771784, now seen corresponding path program 1 times [2020-12-22 08:51:07,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:51:07,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645189186] [2020-12-22 08:51:07,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:51:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:51:07,279 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 08:51:07,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645189186] [2020-12-22 08:51:07,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:51:07,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:51:07,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437150332] [2020-12-22 08:51:07,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:51:07,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:51:07,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:51:07,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:51:07,281 INFO L87 Difference]: Start difference. First operand 54783 states and 79294 transitions. Second operand 8 states. [2020-12-22 08:51:31,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:51:31,740 INFO L93 Difference]: Finished difference Result 233261 states and 338469 transitions. [2020-12-22 08:51:31,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:51:31,741 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 08:51:31,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:51:32,239 INFO L225 Difference]: With dead ends: 233261 [2020-12-22 08:51:32,239 INFO L226 Difference]: Without dead ends: 204555 [2020-12-22 08:51:32,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:51:32,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204555 states. [2020-12-22 08:51:45,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204555 to 95135. [2020-12-22 08:51:45,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95135 states. [2020-12-22 08:51:45,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95135 states to 95135 states and 137310 transitions. [2020-12-22 08:51:45,733 INFO L78 Accepts]: Start accepts. Automaton has 95135 states and 137310 transitions. Word has length 111 [2020-12-22 08:51:45,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:51:45,734 INFO L481 AbstractCegarLoop]: Abstraction has 95135 states and 137310 transitions. [2020-12-22 08:51:45,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:51:45,734 INFO L276 IsEmpty]: Start isEmpty. Operand 95135 states and 137310 transitions. [2020-12-22 08:51:45,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 08:51:45,747 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:51:45,747 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2020-12-22 08:51:45,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:51:45,749 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:51:45,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:51:45,750 INFO L82 PathProgramCache]: Analyzing trace with hash 2001758078, now seen corresponding path program 1 times [2020-12-22 08:51:45,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:51:45,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327797531] [2020-12-22 08:51:45,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:51:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:51:45,939 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 08:51:45,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327797531] [2020-12-22 08:51:45,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:51:45,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:51:45,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786927169] [2020-12-22 08:51:45,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:51:45,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:51:45,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:51:45,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:51:45,941 INFO L87 Difference]: Start difference. First operand 95135 states and 137310 transitions. Second operand 8 states. [2020-12-22 08:52:17,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:52:17,170 INFO L93 Difference]: Finished difference Result 261965 states and 379845 transitions. [2020-12-22 08:52:17,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:52:17,171 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 08:52:17,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:52:17,790 INFO L225 Difference]: With dead ends: 261965 [2020-12-22 08:52:17,790 INFO L226 Difference]: Without dead ends: 233259 [2020-12-22 08:52:17,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:52:18,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233259 states. [2020-12-22 08:52:35,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233259 to 123839. [2020-12-22 08:52:35,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123839 states. [2020-12-22 08:52:36,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123839 states to 123839 states and 178686 transitions. [2020-12-22 08:52:36,211 INFO L78 Accepts]: Start accepts. Automaton has 123839 states and 178686 transitions. Word has length 111 [2020-12-22 08:52:36,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:52:36,211 INFO L481 AbstractCegarLoop]: Abstraction has 123839 states and 178686 transitions. [2020-12-22 08:52:36,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:52:36,211 INFO L276 IsEmpty]: Start isEmpty. Operand 123839 states and 178686 transitions. [2020-12-22 08:52:36,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 08:52:36,225 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:52:36,226 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2020-12-22 08:52:36,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:52:36,226 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:52:36,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:52:36,226 INFO L82 PathProgramCache]: Analyzing trace with hash 277216016, now seen corresponding path program 1 times [2020-12-22 08:52:36,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:52:36,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065015081] [2020-12-22 08:52:36,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:52:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:52:36,580 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 08:52:36,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065015081] [2020-12-22 08:52:36,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:52:36,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:52:36,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925343350] [2020-12-22 08:52:36,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:52:36,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:52:36,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:52:36,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:52:36,583 INFO L87 Difference]: Start difference. First operand 123839 states and 178686 transitions. Second operand 8 states. [2020-12-22 08:53:15,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:53:15,120 INFO L93 Difference]: Finished difference Result 290669 states and 421221 transitions. [2020-12-22 08:53:15,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:53:15,120 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 08:53:15,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:53:15,729 INFO L225 Difference]: With dead ends: 290669 [2020-12-22 08:53:15,730 INFO L226 Difference]: Without dead ends: 261963 [2020-12-22 08:53:15,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:53:16,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261963 states. [2020-12-22 08:53:39,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261963 to 152543. [2020-12-22 08:53:39,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152543 states. [2020-12-22 08:53:40,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152543 states to 152543 states and 220062 transitions. [2020-12-22 08:53:40,096 INFO L78 Accepts]: Start accepts. Automaton has 152543 states and 220062 transitions. Word has length 111 [2020-12-22 08:53:40,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:53:40,096 INFO L481 AbstractCegarLoop]: Abstraction has 152543 states and 220062 transitions. [2020-12-22 08:53:40,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:53:40,097 INFO L276 IsEmpty]: Start isEmpty. Operand 152543 states and 220062 transitions. [2020-12-22 08:53:40,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 08:53:40,126 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:53:40,126 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2020-12-22 08:53:40,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:53:40,126 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:53:40,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:53:40,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1431162122, now seen corresponding path program 1 times [2020-12-22 08:53:40,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:53:40,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091999815] [2020-12-22 08:53:40,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:53:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:53:40,307 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 08:53:40,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091999815] [2020-12-22 08:53:40,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:53:40,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:53:40,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698593005] [2020-12-22 08:53:40,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:53:40,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:53:40,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:53:40,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:53:40,317 INFO L87 Difference]: Start difference. First operand 152543 states and 220062 transitions. Second operand 8 states.