/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/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:39:34,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:39:34,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:39:34,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:39:34,257 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:39:34,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:39:34,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:39:34,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:39:34,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:39:34,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:39:34,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:39:34,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:39:34,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:39:34,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:39:34,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:39:34,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:39:34,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:39:34,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:39:34,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:39:34,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:39:34,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:39:34,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:39:34,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:39:34,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:39:34,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 09:39:34,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 09:39:34,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 09:39:34,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 09:39:34,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 09:39:34,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 09:39:34,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 09:39:34,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 09:39:34,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 09:39:34,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 09:39:34,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 09:39:34,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 09:39:34,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 09:39:34,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 09:39:34,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:39:34,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:39:34,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:39:34,362 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:39:34,414 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:39:34,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:39:34,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:39:34,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:39:34,419 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:39:34,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:39:34,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:39:34,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:39:34,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:39:34,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:39:34,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:39:34,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:39:34,421 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:39:34,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:39:34,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:39:34,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:39:34,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:39:34,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:39:34,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:39:34,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:39:34,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:39:34,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:39:34,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:39:34,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:39:34,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:39:34,424 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:39:34,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:39:34,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:39:34,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:39:34,869 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:39:34,869 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:39:34,870 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c [2020-12-22 09:39:34,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a674342d3/bfb0a5a2aff748cab54a7432ba06604b/FLAG0b014631e [2020-12-22 09:39:35,929 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:39:35,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c [2020-12-22 09:39:35,981 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a674342d3/bfb0a5a2aff748cab54a7432ba06604b/FLAG0b014631e [2020-12-22 09:39:36,428 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a674342d3/bfb0a5a2aff748cab54a7432ba06604b [2020-12-22 09:39:36,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:39:36,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:39:36,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:39:36,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:39:36,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:39:36,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:39:36" (1/1) ... [2020-12-22 09:39:36,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f481835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:39:36, skipping insertion in model container [2020-12-22 09:39:36,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:39:36" (1/1) ... [2020-12-22 09:39:36,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:39:36,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:39:36,943 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/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c[6508,6521] [2020-12-22 09:39:36,987 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/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c[9772,9785] [2020-12-22 09:39:38,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:39:38,147 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:39:38,212 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/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c[6508,6521] [2020-12-22 09:39:38,266 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/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c[9772,9785] [2020-12-22 09:39:38,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:39:38,916 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:39:38,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:39:38 WrapperNode [2020-12-22 09:39:38,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:39:38,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:39:38,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:39:38,919 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:39:38,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:39:38" (1/1) ... [2020-12-22 09:39:39,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:39:38" (1/1) ... [2020-12-22 09:39:39,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:39:39,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:39:39,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:39:39,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:39:39,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:39:38" (1/1) ... [2020-12-22 09:39:39,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:39:38" (1/1) ... [2020-12-22 09:39:39,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:39:38" (1/1) ... [2020-12-22 09:39:39,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:39:38" (1/1) ... [2020-12-22 09:39:39,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:39:38" (1/1) ... [2020-12-22 09:39:39,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:39:38" (1/1) ... [2020-12-22 09:39:39,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:39:38" (1/1) ... [2020-12-22 09:39:40,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:39:40,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:39:40,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:39:40,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:39:40,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:39:38" (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 09:39:40,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:39:40,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:39:40,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:39:40,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:39:45,418 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:39:45,419 INFO L299 CfgBuilder]: Removed 32 assume(true) statements. [2020-12-22 09:39:45,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:39:45 BoogieIcfgContainer [2020-12-22 09:39:45,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:39:45,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:39:45,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:39:45,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:39:45,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:39:36" (1/3) ... [2020-12-22 09:39:45,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182454f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:39:45, skipping insertion in model container [2020-12-22 09:39:45,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:39:38" (2/3) ... [2020-12-22 09:39:45,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182454f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:39:45, skipping insertion in model container [2020-12-22 09:39:45,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:39:45" (3/3) ... [2020-12-22 09:39:45,433 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label08.c [2020-12-22 09:39:45,439 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:39:45,445 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 09:39:45,464 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 09:39:45,496 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:39:45,496 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:39:45,496 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:39:45,497 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:39:45,497 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:39:45,497 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:39:45,497 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:39:45,497 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:39:45,529 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states. [2020-12-22 09:39:45,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 09:39:45,537 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:39:45,538 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] [2020-12-22 09:39:45,539 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:39:45,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:39:45,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1601385972, now seen corresponding path program 1 times [2020-12-22 09:39:45,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:39:45,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852098708] [2020-12-22 09:39:45,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:39:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:45,827 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 09:39:45,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852098708] [2020-12-22 09:39:45,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:39:45,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 09:39:45,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763231590] [2020-12-22 09:39:45,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 09:39:45,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:39:45,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 09:39:45,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 09:39:45,903 INFO L87 Difference]: Start difference. First operand 879 states. Second operand 2 states. [2020-12-22 09:39:46,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:39:46,005 INFO L93 Difference]: Finished difference Result 1734 states and 3294 transitions. [2020-12-22 09:39:46,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 09:39:46,006 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2020-12-22 09:39:46,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:39:46,045 INFO L225 Difference]: With dead ends: 1734 [2020-12-22 09:39:46,046 INFO L226 Difference]: Without dead ends: 813 [2020-12-22 09:39:46,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 09:39:46,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2020-12-22 09:39:46,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 813. [2020-12-22 09:39:46,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 813 states. [2020-12-22 09:39:46,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1535 transitions. [2020-12-22 09:39:46,157 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1535 transitions. Word has length 26 [2020-12-22 09:39:46,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:39:46,157 INFO L481 AbstractCegarLoop]: Abstraction has 813 states and 1535 transitions. [2020-12-22 09:39:46,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 09:39:46,158 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1535 transitions. [2020-12-22 09:39:46,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 09:39:46,159 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:39:46,159 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] [2020-12-22 09:39:46,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:39:46,160 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:39:46,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:39:46,161 INFO L82 PathProgramCache]: Analyzing trace with hash 783737522, now seen corresponding path program 1 times [2020-12-22 09:39:46,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:39:46,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205376059] [2020-12-22 09:39:46,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:39:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:46,286 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 09:39:46,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205376059] [2020-12-22 09:39:46,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:39:46,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:39:46,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770452877] [2020-12-22 09:39:46,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:39:46,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:39:46,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:39:46,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:39:46,291 INFO L87 Difference]: Start difference. First operand 813 states and 1535 transitions. Second operand 5 states. [2020-12-22 09:39:46,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:39:46,406 INFO L93 Difference]: Finished difference Result 854 states and 1597 transitions. [2020-12-22 09:39:46,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:39:46,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-22 09:39:46,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:39:46,412 INFO L225 Difference]: With dead ends: 854 [2020-12-22 09:39:46,412 INFO L226 Difference]: Without dead ends: 813 [2020-12-22 09:39:46,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:39:46,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2020-12-22 09:39:46,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 813. [2020-12-22 09:39:46,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 813 states. [2020-12-22 09:39:46,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1519 transitions. [2020-12-22 09:39:46,463 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1519 transitions. Word has length 26 [2020-12-22 09:39:46,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:39:46,463 INFO L481 AbstractCegarLoop]: Abstraction has 813 states and 1519 transitions. [2020-12-22 09:39:46,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:39:46,463 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1519 transitions. [2020-12-22 09:39:46,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 09:39:46,465 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:39:46,465 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] [2020-12-22 09:39:46,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:39:46,465 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:39:46,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:39:46,467 INFO L82 PathProgramCache]: Analyzing trace with hash 412678509, now seen corresponding path program 1 times [2020-12-22 09:39:46,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:39:46,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73719618] [2020-12-22 09:39:46,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:39:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:46,574 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 09:39:46,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73719618] [2020-12-22 09:39:46,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:39:46,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 09:39:46,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78060793] [2020-12-22 09:39:46,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:39:46,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:39:46,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:39:46,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:39:46,577 INFO L87 Difference]: Start difference. First operand 813 states and 1519 transitions. Second operand 3 states. [2020-12-22 09:39:52,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:39:52,143 INFO L93 Difference]: Finished difference Result 2317 states and 4392 transitions. [2020-12-22 09:39:52,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:39:52,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-22 09:39:52,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:39:52,158 INFO L225 Difference]: With dead ends: 2317 [2020-12-22 09:39:52,159 INFO L226 Difference]: Without dead ends: 1564 [2020-12-22 09:39:52,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:39:52,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2020-12-22 09:39:52,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 1564. [2020-12-22 09:39:52,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-12-22 09:39:52,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2858 transitions. [2020-12-22 09:39:52,225 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2858 transitions. Word has length 30 [2020-12-22 09:39:52,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:39:52,226 INFO L481 AbstractCegarLoop]: Abstraction has 1564 states and 2858 transitions. [2020-12-22 09:39:52,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:39:52,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2858 transitions. [2020-12-22 09:39:52,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 09:39:52,229 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:39:52,229 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] [2020-12-22 09:39:52,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:39:52,230 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:39:52,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:39:52,231 INFO L82 PathProgramCache]: Analyzing trace with hash -698732182, now seen corresponding path program 1 times [2020-12-22 09:39:52,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:39:52,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206713476] [2020-12-22 09:39:52,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:39:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:52,339 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 09:39:52,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206713476] [2020-12-22 09:39:52,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:39:52,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:39:52,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707234576] [2020-12-22 09:39:52,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:39:52,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:39:52,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:39:52,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:39:52,342 INFO L87 Difference]: Start difference. First operand 1564 states and 2858 transitions. Second operand 3 states. [2020-12-22 09:39:52,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:39:52,399 INFO L93 Difference]: Finished difference Result 1632 states and 2964 transitions. [2020-12-22 09:39:52,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:39:52,400 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-12-22 09:39:52,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:39:52,409 INFO L225 Difference]: With dead ends: 1632 [2020-12-22 09:39:52,409 INFO L226 Difference]: Without dead ends: 1595 [2020-12-22 09:39:52,410 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 09:39:52,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2020-12-22 09:39:52,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1593. [2020-12-22 09:39:52,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-12-22 09:39:52,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2904 transitions. [2020-12-22 09:39:52,460 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2904 transitions. Word has length 41 [2020-12-22 09:39:52,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:39:52,461 INFO L481 AbstractCegarLoop]: Abstraction has 1593 states and 2904 transitions. [2020-12-22 09:39:52,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:39:52,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2904 transitions. [2020-12-22 09:39:52,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 09:39:52,468 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:39:52,469 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] [2020-12-22 09:39:52,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:39:52,469 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:39:52,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:39:52,470 INFO L82 PathProgramCache]: Analyzing trace with hash -360939040, now seen corresponding path program 1 times [2020-12-22 09:39:52,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:39:52,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386182503] [2020-12-22 09:39:52,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:39:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:52,604 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 09:39:52,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386182503] [2020-12-22 09:39:52,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:39:52,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:39:52,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271912945] [2020-12-22 09:39:52,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:39:52,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:39:52,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:39:52,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:39:52,610 INFO L87 Difference]: Start difference. First operand 1593 states and 2904 transitions. Second operand 3 states. [2020-12-22 09:39:52,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:39:52,664 INFO L93 Difference]: Finished difference Result 1713 states and 3092 transitions. [2020-12-22 09:39:52,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:39:52,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-12-22 09:39:52,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:39:52,676 INFO L225 Difference]: With dead ends: 1713 [2020-12-22 09:39:52,676 INFO L226 Difference]: Without dead ends: 1647 [2020-12-22 09:39:52,677 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 09:39:52,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2020-12-22 09:39:52,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1645. [2020-12-22 09:39:52,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1645 states. [2020-12-22 09:39:52,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 2985 transitions. [2020-12-22 09:39:52,738 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 2985 transitions. Word has length 41 [2020-12-22 09:39:52,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:39:52,739 INFO L481 AbstractCegarLoop]: Abstraction has 1645 states and 2985 transitions. [2020-12-22 09:39:52,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:39:52,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 2985 transitions. [2020-12-22 09:39:52,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 09:39:52,740 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:39:52,740 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] [2020-12-22 09:39:52,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:39:52,741 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:39:52,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:39:52,742 INFO L82 PathProgramCache]: Analyzing trace with hash 857046358, now seen corresponding path program 1 times [2020-12-22 09:39:52,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:39:52,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087174703] [2020-12-22 09:39:52,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:39:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:52,817 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 09:39:52,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087174703] [2020-12-22 09:39:52,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:39:52,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:39:52,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833743019] [2020-12-22 09:39:52,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:39:52,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:39:52,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:39:52,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:39:52,820 INFO L87 Difference]: Start difference. First operand 1645 states and 2985 transitions. Second operand 5 states. [2020-12-22 09:39:53,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:39:53,006 INFO L93 Difference]: Finished difference Result 2353 states and 4095 transitions. [2020-12-22 09:39:53,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:39:53,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-12-22 09:39:53,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:39:53,022 INFO L225 Difference]: With dead ends: 2353 [2020-12-22 09:39:53,022 INFO L226 Difference]: Without dead ends: 2235 [2020-12-22 09:39:53,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:39:53,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2020-12-22 09:39:53,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 1761. [2020-12-22 09:39:53,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1761 states. [2020-12-22 09:39:53,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1761 states to 1761 states and 3161 transitions. [2020-12-22 09:39:53,102 INFO L78 Accepts]: Start accepts. Automaton has 1761 states and 3161 transitions. Word has length 41 [2020-12-22 09:39:53,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:39:53,102 INFO L481 AbstractCegarLoop]: Abstraction has 1761 states and 3161 transitions. [2020-12-22 09:39:53,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:39:53,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states and 3161 transitions. [2020-12-22 09:39:53,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 09:39:53,103 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:39:53,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:39:53,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:39:53,104 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:39:53,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:39:53,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1867096070, now seen corresponding path program 1 times [2020-12-22 09:39:53,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:39:53,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626219449] [2020-12-22 09:39:53,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:39:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:53,170 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 09:39:53,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626219449] [2020-12-22 09:39:53,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:39:53,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:39:53,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761060320] [2020-12-22 09:39:53,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:39:53,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:39:53,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:39:53,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:39:53,174 INFO L87 Difference]: Start difference. First operand 1761 states and 3161 transitions. Second operand 3 states. [2020-12-22 09:39:53,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:39:53,255 INFO L93 Difference]: Finished difference Result 2185 states and 3807 transitions. [2020-12-22 09:39:53,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:39:53,256 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-12-22 09:39:53,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:39:53,270 INFO L225 Difference]: With dead ends: 2185 [2020-12-22 09:39:53,270 INFO L226 Difference]: Without dead ends: 1951 [2020-12-22 09:39:53,272 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 09:39:53,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2020-12-22 09:39:53,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 1941. [2020-12-22 09:39:53,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1941 states. [2020-12-22 09:39:53,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 3417 transitions. [2020-12-22 09:39:53,361 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 3417 transitions. Word has length 43 [2020-12-22 09:39:53,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:39:53,362 INFO L481 AbstractCegarLoop]: Abstraction has 1941 states and 3417 transitions. [2020-12-22 09:39:53,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:39:53,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 3417 transitions. [2020-12-22 09:39:53,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 09:39:53,363 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:39:53,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:39:53,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:39:53,364 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:39:53,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:39:53,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1933589582, now seen corresponding path program 1 times [2020-12-22 09:39:53,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:39:53,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268037804] [2020-12-22 09:39:53,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:39:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:53,496 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 09:39:53,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268037804] [2020-12-22 09:39:53,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:39:53,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:39:53,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097983670] [2020-12-22 09:39:53,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:39:53,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:39:53,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:39:53,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:39:53,499 INFO L87 Difference]: Start difference. First operand 1941 states and 3417 transitions. Second operand 5 states. [2020-12-22 09:39:53,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:39:53,647 INFO L93 Difference]: Finished difference Result 2357 states and 4035 transitions. [2020-12-22 09:39:53,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:39:53,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-12-22 09:39:53,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:39:53,661 INFO L225 Difference]: With dead ends: 2357 [2020-12-22 09:39:53,661 INFO L226 Difference]: Without dead ends: 1943 [2020-12-22 09:39:53,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:39:53,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2020-12-22 09:39:53,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1941. [2020-12-22 09:39:53,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1941 states. [2020-12-22 09:39:53,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 3409 transitions. [2020-12-22 09:39:53,749 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 3409 transitions. Word has length 43 [2020-12-22 09:39:53,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:39:53,749 INFO L481 AbstractCegarLoop]: Abstraction has 1941 states and 3409 transitions. [2020-12-22 09:39:53,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:39:53,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 3409 transitions. [2020-12-22 09:39:53,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 09:39:53,751 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:39:53,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:39:53,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:39:53,751 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:39:53,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:39:53,752 INFO L82 PathProgramCache]: Analyzing trace with hash -602988295, now seen corresponding path program 1 times [2020-12-22 09:39:53,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:39:53,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125007769] [2020-12-22 09:39:53,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:39:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:53,882 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 09:39:53,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125007769] [2020-12-22 09:39:53,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:39:53,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 09:39:53,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062150710] [2020-12-22 09:39:53,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 09:39:53,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:39:53,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 09:39:53,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:39:53,885 INFO L87 Difference]: Start difference. First operand 1941 states and 3409 transitions. Second operand 8 states. [2020-12-22 09:39:54,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:39:54,155 INFO L93 Difference]: Finished difference Result 2267 states and 3873 transitions. [2020-12-22 09:39:54,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 09:39:54,156 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-12-22 09:39:54,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:39:54,169 INFO L225 Difference]: With dead ends: 2267 [2020-12-22 09:39:54,170 INFO L226 Difference]: Without dead ends: 2265 [2020-12-22 09:39:54,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 09:39:54,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2020-12-22 09:39:54,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 1965. [2020-12-22 09:39:54,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-12-22 09:39:54,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 3429 transitions. [2020-12-22 09:39:54,250 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 3429 transitions. Word has length 44 [2020-12-22 09:39:54,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:39:54,251 INFO L481 AbstractCegarLoop]: Abstraction has 1965 states and 3429 transitions. [2020-12-22 09:39:54,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 09:39:54,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 3429 transitions. [2020-12-22 09:39:54,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 09:39:54,252 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:39:54,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:39:54,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:39:54,252 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:39:54,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:39:54,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1900121563, now seen corresponding path program 1 times [2020-12-22 09:39:54,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:39:54,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509552209] [2020-12-22 09:39:54,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:39:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:54,289 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 09:39:54,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509552209] [2020-12-22 09:39:54,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:39:54,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:39:54,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209735314] [2020-12-22 09:39:54,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:39:54,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:39:54,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:39:54,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:39:54,291 INFO L87 Difference]: Start difference. First operand 1965 states and 3429 transitions. Second operand 3 states. [2020-12-22 09:39:54,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:39:54,369 INFO L93 Difference]: Finished difference Result 2420 states and 4091 transitions. [2020-12-22 09:39:54,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:39:54,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-12-22 09:39:54,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:39:54,382 INFO L225 Difference]: With dead ends: 2420 [2020-12-22 09:39:54,382 INFO L226 Difference]: Without dead ends: 2161 [2020-12-22 09:39:54,384 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 09:39:54,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2020-12-22 09:39:54,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 2159. [2020-12-22 09:39:54,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2159 states. [2020-12-22 09:39:54,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2159 states to 2159 states and 3699 transitions. [2020-12-22 09:39:54,475 INFO L78 Accepts]: Start accepts. Automaton has 2159 states and 3699 transitions. Word has length 45 [2020-12-22 09:39:54,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:39:54,475 INFO L481 AbstractCegarLoop]: Abstraction has 2159 states and 3699 transitions. [2020-12-22 09:39:54,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:39:54,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2159 states and 3699 transitions. [2020-12-22 09:39:54,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 09:39:54,477 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:39:54,477 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-12-22 09:39:54,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:39:54,477 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:39:54,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:39:54,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1836022441, now seen corresponding path program 1 times [2020-12-22 09:39:54,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:39:54,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060274057] [2020-12-22 09:39:54,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:39:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:54,551 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 09:39:54,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060274057] [2020-12-22 09:39:54,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:39:54,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:39:54,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353183401] [2020-12-22 09:39:54,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:39:54,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:39:54,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:39:54,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:39:54,555 INFO L87 Difference]: Start difference. First operand 2159 states and 3699 transitions. Second operand 5 states. [2020-12-22 09:39:54,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:39:54,795 INFO L93 Difference]: Finished difference Result 4187 states and 6575 transitions. [2020-12-22 09:39:54,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:39:54,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-12-22 09:39:54,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:39:54,814 INFO L225 Difference]: With dead ends: 4187 [2020-12-22 09:39:54,814 INFO L226 Difference]: Without dead ends: 3557 [2020-12-22 09:39:54,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:39:54,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2020-12-22 09:39:54,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 2787. [2020-12-22 09:39:54,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2787 states. [2020-12-22 09:39:54,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 4583 transitions. [2020-12-22 09:39:54,974 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 4583 transitions. Word has length 63 [2020-12-22 09:39:54,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:39:54,975 INFO L481 AbstractCegarLoop]: Abstraction has 2787 states and 4583 transitions. [2020-12-22 09:39:54,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:39:54,975 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 4583 transitions. [2020-12-22 09:39:54,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 09:39:54,976 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:39:54,976 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-12-22 09:39:54,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:39:54,977 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:39:54,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:39:54,977 INFO L82 PathProgramCache]: Analyzing trace with hash 67239625, now seen corresponding path program 1 times [2020-12-22 09:39:54,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:39:54,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850548584] [2020-12-22 09:39:54,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:39:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:55,093 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 09:39:55,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850548584] [2020-12-22 09:39:55,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:39:55,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:39:55,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496734933] [2020-12-22 09:39:55,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:39:55,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:39:55,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:39:55,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:39:55,096 INFO L87 Difference]: Start difference. First operand 2787 states and 4583 transitions. Second operand 5 states. [2020-12-22 09:39:55,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:39:55,465 INFO L93 Difference]: Finished difference Result 4815 states and 7459 transitions. [2020-12-22 09:39:55,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:39:55,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-12-22 09:39:55,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:39:55,488 INFO L225 Difference]: With dead ends: 4815 [2020-12-22 09:39:55,488 INFO L226 Difference]: Without dead ends: 4185 [2020-12-22 09:39:55,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:39:55,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4185 states. [2020-12-22 09:39:55,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4185 to 3731. [2020-12-22 09:39:55,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3731 states. [2020-12-22 09:39:55,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3731 states to 3731 states and 5899 transitions. [2020-12-22 09:39:55,737 INFO L78 Accepts]: Start accepts. Automaton has 3731 states and 5899 transitions. Word has length 63 [2020-12-22 09:39:55,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:39:55,738 INFO L481 AbstractCegarLoop]: Abstraction has 3731 states and 5899 transitions. [2020-12-22 09:39:55,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:39:55,738 INFO L276 IsEmpty]: Start isEmpty. Operand 3731 states and 5899 transitions. [2020-12-22 09:39:55,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 09:39:55,739 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:39:55,739 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-12-22 09:39:55,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:39:55,740 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:39:55,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:39:55,741 INFO L82 PathProgramCache]: Analyzing trace with hash 2131767521, now seen corresponding path program 1 times [2020-12-22 09:39:55,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:39:55,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014256839] [2020-12-22 09:39:55,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:39:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:55,796 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:39:55,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014256839] [2020-12-22 09:39:55,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:39:55,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:39:55,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357186082] [2020-12-22 09:39:55,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:39:55,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:39:55,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:39:55,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:39:55,799 INFO L87 Difference]: Start difference. First operand 3731 states and 5899 transitions. Second operand 3 states. [2020-12-22 09:39:55,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:39:55,967 INFO L93 Difference]: Finished difference Result 5324 states and 8166 transitions. [2020-12-22 09:39:55,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:39:55,968 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 09:39:55,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:39:55,976 INFO L225 Difference]: With dead ends: 5324 [2020-12-22 09:39:55,977 INFO L226 Difference]: Without dead ends: 3122 [2020-12-22 09:39:55,981 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 09:39:55,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2020-12-22 09:39:56,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 3120. [2020-12-22 09:39:56,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3120 states. [2020-12-22 09:39:56,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 5039 transitions. [2020-12-22 09:39:56,163 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 5039 transitions. Word has length 65 [2020-12-22 09:39:56,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:39:56,164 INFO L481 AbstractCegarLoop]: Abstraction has 3120 states and 5039 transitions. [2020-12-22 09:39:56,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:39:56,164 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 5039 transitions. [2020-12-22 09:39:56,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 09:39:56,165 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:39:56,165 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 09:39:56,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:39:56,166 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:39:56,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:39:56,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1187468114, now seen corresponding path program 1 times [2020-12-22 09:39:56,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:39:56,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391751236] [2020-12-22 09:39:56,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:39:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:56,249 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 09:39:56,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391751236] [2020-12-22 09:39:56,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:39:56,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:39:56,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307710168] [2020-12-22 09:39:56,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:39:56,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:39:56,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:39:56,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:39:56,251 INFO L87 Difference]: Start difference. First operand 3120 states and 5039 transitions. Second operand 5 states. [2020-12-22 09:39:56,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:39:56,534 INFO L93 Difference]: Finished difference Result 4472 states and 6963 transitions. [2020-12-22 09:39:56,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:39:56,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-12-22 09:39:56,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:39:56,545 INFO L225 Difference]: With dead ends: 4472 [2020-12-22 09:39:56,545 INFO L226 Difference]: Without dead ends: 4022 [2020-12-22 09:39:56,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:39:56,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4022 states. [2020-12-22 09:39:56,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4022 to 3568. [2020-12-22 09:39:56,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3568 states. [2020-12-22 09:39:56,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3568 states to 3568 states and 5671 transitions. [2020-12-22 09:39:56,776 INFO L78 Accepts]: Start accepts. Automaton has 3568 states and 5671 transitions. Word has length 65 [2020-12-22 09:39:56,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:39:56,777 INFO L481 AbstractCegarLoop]: Abstraction has 3568 states and 5671 transitions. [2020-12-22 09:39:56,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:39:56,777 INFO L276 IsEmpty]: Start isEmpty. Operand 3568 states and 5671 transitions. [2020-12-22 09:39:56,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 09:39:56,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:39:56,779 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 09:39:56,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:39:56,779 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:39:56,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:39:56,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1662229482, now seen corresponding path program 1 times [2020-12-22 09:39:56,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:39:56,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699304562] [2020-12-22 09:39:56,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:39:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:57,014 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:39:57,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699304562] [2020-12-22 09:39:57,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809796821] [2020-12-22 09:39:57,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:39:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:39:57,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 09:39:57,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:39:57,521 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 09:39:57,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:39:57,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-22 09:39:57,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188856997] [2020-12-22 09:39:57,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 09:39:57,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:39:57,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 09:39:57,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-12-22 09:39:57,526 INFO L87 Difference]: Start difference. First operand 3568 states and 5671 transitions. Second operand 12 states. [2020-12-22 09:39:57,846 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2020-12-22 09:40:00,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:40:00,673 INFO L93 Difference]: Finished difference Result 12862 states and 18427 transitions. [2020-12-22 09:40:00,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-12-22 09:40:00,673 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-12-22 09:40:00,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:40:00,694 INFO L225 Difference]: With dead ends: 12862 [2020-12-22 09:40:00,695 INFO L226 Difference]: Without dead ends: 10844 [2020-12-22 09:40:00,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=441, Invalid=1629, Unknown=0, NotChecked=0, Total=2070 [2020-12-22 09:40:00,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10844 states. [2020-12-22 09:40:01,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10844 to 7580. [2020-12-22 09:40:01,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7580 states. [2020-12-22 09:40:01,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7580 states to 7580 states and 10948 transitions. [2020-12-22 09:40:01,342 INFO L78 Accepts]: Start accepts. Automaton has 7580 states and 10948 transitions. Word has length 66 [2020-12-22 09:40:01,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:40:01,342 INFO L481 AbstractCegarLoop]: Abstraction has 7580 states and 10948 transitions. [2020-12-22 09:40:01,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 09:40:01,342 INFO L276 IsEmpty]: Start isEmpty. Operand 7580 states and 10948 transitions. [2020-12-22 09:40:01,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:40:01,344 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:40:01,344 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] [2020-12-22 09:40:01,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 09:40:01,558 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:40:01,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:40:01,559 INFO L82 PathProgramCache]: Analyzing trace with hash -44763738, now seen corresponding path program 1 times [2020-12-22 09:40:01,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:40:01,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813807107] [2020-12-22 09:40:01,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:40:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:40:01,833 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:40:01,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813807107] [2020-12-22 09:40:01,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136407017] [2020-12-22 09:40:01,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:40:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:40:01,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 09:40:01,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:40:02,112 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 09:40:02,397 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:40:02,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:40:02,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 09:40:02,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721516374] [2020-12-22 09:40:02,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 09:40:02,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:40:02,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 09:40:02,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-12-22 09:40:02,400 INFO L87 Difference]: Start difference. First operand 7580 states and 10948 transitions. Second operand 17 states. [2020-12-22 09:40:06,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:40:06,533 INFO L93 Difference]: Finished difference Result 31451 states and 43006 transitions. [2020-12-22 09:40:06,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 09:40:06,534 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 67 [2020-12-22 09:40:06,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:40:06,595 INFO L225 Difference]: With dead ends: 31451 [2020-12-22 09:40:06,595 INFO L226 Difference]: Without dead ends: 26540 [2020-12-22 09:40:06,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2020-12-22 09:40:06,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26540 states. [2020-12-22 09:40:08,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26540 to 15253. [2020-12-22 09:40:08,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15253 states. [2020-12-22 09:40:08,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15253 states to 15253 states and 21234 transitions. [2020-12-22 09:40:08,177 INFO L78 Accepts]: Start accepts. Automaton has 15253 states and 21234 transitions. Word has length 67 [2020-12-22 09:40:08,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:40:08,178 INFO L481 AbstractCegarLoop]: Abstraction has 15253 states and 21234 transitions. [2020-12-22 09:40:08,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 09:40:08,178 INFO L276 IsEmpty]: Start isEmpty. Operand 15253 states and 21234 transitions. [2020-12-22 09:40:08,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:40:08,180 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:40:08,180 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 09:40:08,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 09:40:08,396 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:40:08,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:40:08,397 INFO L82 PathProgramCache]: Analyzing trace with hash -2066736808, now seen corresponding path program 1 times [2020-12-22 09:40:08,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:40:08,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518206220] [2020-12-22 09:40:08,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:40:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:40:08,659 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:40:08,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518206220] [2020-12-22 09:40:08,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670103281] [2020-12-22 09:40:08,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:40:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:40:08,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 09:40:08,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:40:08,929 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 09:40:09,260 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:40:09,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:40:09,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 09:40:09,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170758358] [2020-12-22 09:40:09,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 09:40:09,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:40:09,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 09:40:09,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-12-22 09:40:09,265 INFO L87 Difference]: Start difference. First operand 15253 states and 21234 transitions. Second operand 17 states. [2020-12-22 09:40:16,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:40:16,158 INFO L93 Difference]: Finished difference Result 76692 states and 103890 transitions. [2020-12-22 09:40:16,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 09:40:16,159 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 67 [2020-12-22 09:40:16,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:40:16,299 INFO L225 Difference]: With dead ends: 76692 [2020-12-22 09:40:16,299 INFO L226 Difference]: Without dead ends: 65262 [2020-12-22 09:40:16,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=591, Invalid=1665, Unknown=0, NotChecked=0, Total=2256 [2020-12-22 09:40:16,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65262 states. [2020-12-22 09:40:19,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65262 to 33304. [2020-12-22 09:40:19,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33304 states. [2020-12-22 09:40:19,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33304 states to 33304 states and 45502 transitions. [2020-12-22 09:40:19,914 INFO L78 Accepts]: Start accepts. Automaton has 33304 states and 45502 transitions. Word has length 67 [2020-12-22 09:40:19,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:40:19,914 INFO L481 AbstractCegarLoop]: Abstraction has 33304 states and 45502 transitions. [2020-12-22 09:40:19,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 09:40:19,914 INFO L276 IsEmpty]: Start isEmpty. Operand 33304 states and 45502 transitions. [2020-12-22 09:40:19,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:40:19,918 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:40:19,918 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-12-22 09:40:20,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 09:40:20,134 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:40:20,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:40:20,136 INFO L82 PathProgramCache]: Analyzing trace with hash -848751410, now seen corresponding path program 1 times [2020-12-22 09:40:20,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:40:20,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635752130] [2020-12-22 09:40:20,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:40:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:40:20,268 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:40:20,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635752130] [2020-12-22 09:40:20,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:40:20,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:40:20,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164992059] [2020-12-22 09:40:20,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:40:20,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:40:20,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:40:20,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:40:20,270 INFO L87 Difference]: Start difference. First operand 33304 states and 45502 transitions. Second operand 3 states. [2020-12-22 09:40:22,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:40:22,063 INFO L93 Difference]: Finished difference Result 48522 states and 66111 transitions. [2020-12-22 09:40:22,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:40:22,064 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-22 09:40:22,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:40:22,103 INFO L225 Difference]: With dead ends: 48522 [2020-12-22 09:40:22,103 INFO L226 Difference]: Without dead ends: 20010 [2020-12-22 09:40:22,148 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 09:40:22,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20010 states. [2020-12-22 09:40:23,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20010 to 19774. [2020-12-22 09:40:23,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19774 states. [2020-12-22 09:40:23,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19774 states to 19774 states and 26664 transitions. [2020-12-22 09:40:23,836 INFO L78 Accepts]: Start accepts. Automaton has 19774 states and 26664 transitions. Word has length 67 [2020-12-22 09:40:23,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:40:23,836 INFO L481 AbstractCegarLoop]: Abstraction has 19774 states and 26664 transitions. [2020-12-22 09:40:23,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:40:23,836 INFO L276 IsEmpty]: Start isEmpty. Operand 19774 states and 26664 transitions. [2020-12-22 09:40:23,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:40:23,839 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:40:23,839 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-12-22 09:40:23,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 09:40:23,840 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:40:23,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:40:23,840 INFO L82 PathProgramCache]: Analyzing trace with hash -2096259026, now seen corresponding path program 1 times [2020-12-22 09:40:23,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:40:23,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395210172] [2020-12-22 09:40:23,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:40:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:40:23,887 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:40:23,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395210172] [2020-12-22 09:40:23,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:40:23,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:40:23,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328979184] [2020-12-22 09:40:23,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:40:23,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:40:23,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:40:23,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:40:23,890 INFO L87 Difference]: Start difference. First operand 19774 states and 26664 transitions. Second operand 3 states. [2020-12-22 09:40:25,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:40:25,083 INFO L93 Difference]: Finished difference Result 29676 states and 39795 transitions. [2020-12-22 09:40:25,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:40:25,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-22 09:40:25,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:40:25,106 INFO L225 Difference]: With dead ends: 29676 [2020-12-22 09:40:25,107 INFO L226 Difference]: Without dead ends: 13664 [2020-12-22 09:40:25,122 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 09:40:25,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13664 states. [2020-12-22 09:40:26,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13664 to 13662. [2020-12-22 09:40:26,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13662 states. [2020-12-22 09:40:26,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13662 states to 13662 states and 18287 transitions. [2020-12-22 09:40:26,315 INFO L78 Accepts]: Start accepts. Automaton has 13662 states and 18287 transitions. Word has length 67 [2020-12-22 09:40:26,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:40:26,315 INFO L481 AbstractCegarLoop]: Abstraction has 13662 states and 18287 transitions. [2020-12-22 09:40:26,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:40:26,315 INFO L276 IsEmpty]: Start isEmpty. Operand 13662 states and 18287 transitions. [2020-12-22 09:40:26,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:40:26,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:40:26,318 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 09:40:26,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 09:40:26,318 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:40:26,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:40:26,319 INFO L82 PathProgramCache]: Analyzing trace with hash 873869654, now seen corresponding path program 1 times [2020-12-22 09:40:26,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:40:26,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405887112] [2020-12-22 09:40:26,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:40:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:40:26,385 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 09:40:26,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405887112] [2020-12-22 09:40:26,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:40:26,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:40:26,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591961122] [2020-12-22 09:40:26,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:40:26,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:40:26,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:40:26,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:40:26,388 INFO L87 Difference]: Start difference. First operand 13662 states and 18287 transitions. Second operand 6 states. [2020-12-22 09:40:27,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:40:27,458 INFO L93 Difference]: Finished difference Result 23425 states and 30839 transitions. [2020-12-22 09:40:27,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:40:27,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-22 09:40:27,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:40:27,477 INFO L225 Difference]: With dead ends: 23425 [2020-12-22 09:40:27,478 INFO L226 Difference]: Without dead ends: 11373 [2020-12-22 09:40:27,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:40:27,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11373 states. [2020-12-22 09:40:28,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11373 to 11373. [2020-12-22 09:40:28,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11373 states. [2020-12-22 09:40:28,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11373 states to 11373 states and 15168 transitions. [2020-12-22 09:40:28,554 INFO L78 Accepts]: Start accepts. Automaton has 11373 states and 15168 transitions. Word has length 67 [2020-12-22 09:40:28,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:40:28,554 INFO L481 AbstractCegarLoop]: Abstraction has 11373 states and 15168 transitions. [2020-12-22 09:40:28,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:40:28,554 INFO L276 IsEmpty]: Start isEmpty. Operand 11373 states and 15168 transitions. [2020-12-22 09:40:28,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:40:28,556 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:40:28,556 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 09:40:28,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 09:40:28,557 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:40:28,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:40:28,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1198871190, now seen corresponding path program 1 times [2020-12-22 09:40:28,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:40:28,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162090335] [2020-12-22 09:40:28,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:40:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:40:28,685 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 09:40:28,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162090335] [2020-12-22 09:40:28,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:40:28,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:40:28,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599618825] [2020-12-22 09:40:28,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:40:28,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:40:28,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:40:28,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:40:28,687 INFO L87 Difference]: Start difference. First operand 11373 states and 15168 transitions. Second operand 6 states. [2020-12-22 09:40:29,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:40:29,568 INFO L93 Difference]: Finished difference Result 18542 states and 24231 transitions. [2020-12-22 09:40:29,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:40:29,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-22 09:40:29,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:40:29,581 INFO L225 Difference]: With dead ends: 18542 [2020-12-22 09:40:29,581 INFO L226 Difference]: Without dead ends: 8813 [2020-12-22 09:40:29,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:40:29,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8813 states. [2020-12-22 09:40:30,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8813 to 8813. [2020-12-22 09:40:30,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8813 states. [2020-12-22 09:40:30,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8813 states to 8813 states and 11820 transitions. [2020-12-22 09:40:30,385 INFO L78 Accepts]: Start accepts. Automaton has 8813 states and 11820 transitions. Word has length 67 [2020-12-22 09:40:30,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:40:30,386 INFO L481 AbstractCegarLoop]: Abstraction has 8813 states and 11820 transitions. [2020-12-22 09:40:30,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:40:30,386 INFO L276 IsEmpty]: Start isEmpty. Operand 8813 states and 11820 transitions. [2020-12-22 09:40:30,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:40:30,387 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:40:30,387 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 09:40:30,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 09:40:30,388 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:40:30,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:40:30,388 INFO L82 PathProgramCache]: Analyzing trace with hash -49807498, now seen corresponding path program 1 times [2020-12-22 09:40:30,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:40:30,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458810174] [2020-12-22 09:40:30,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:40:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:40:30,455 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 09:40:30,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458810174] [2020-12-22 09:40:30,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:40:30,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:40:30,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162347894] [2020-12-22 09:40:30,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:40:30,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:40:30,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:40:30,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:40:30,458 INFO L87 Difference]: Start difference. First operand 8813 states and 11820 transitions. Second operand 6 states. [2020-12-22 09:40:31,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:40:31,518 INFO L93 Difference]: Finished difference Result 14363 states and 18765 transitions. [2020-12-22 09:40:31,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:40:31,520 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-22 09:40:31,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:40:31,528 INFO L225 Difference]: With dead ends: 14363 [2020-12-22 09:40:31,528 INFO L226 Difference]: Without dead ends: 7116 [2020-12-22 09:40:31,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:40:31,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7116 states. [2020-12-22 09:40:32,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7116 to 7116. [2020-12-22 09:40:32,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7116 states. [2020-12-22 09:40:32,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7116 states to 7116 states and 9674 transitions. [2020-12-22 09:40:32,023 INFO L78 Accepts]: Start accepts. Automaton has 7116 states and 9674 transitions. Word has length 67 [2020-12-22 09:40:32,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:40:32,023 INFO L481 AbstractCegarLoop]: Abstraction has 7116 states and 9674 transitions. [2020-12-22 09:40:32,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:40:32,023 INFO L276 IsEmpty]: Start isEmpty. Operand 7116 states and 9674 transitions. [2020-12-22 09:40:32,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 09:40:32,025 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:40:32,025 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 09:40:32,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 09:40:32,025 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:40:32,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:40:32,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1937529655, now seen corresponding path program 1 times [2020-12-22 09:40:32,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:40:32,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471129630] [2020-12-22 09:40:32,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:40:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:40:32,632 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:40:32,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471129630] [2020-12-22 09:40:32,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874021648] [2020-12-22 09:40:32,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:40:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:40:32,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 09:40:32,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:40:33,514 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 09:40:33,540 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 09:40:33,544 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 09:40:33,555 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 09:40:34,003 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:40:34,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:40:34,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2020-12-22 09:40:34,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385240250] [2020-12-22 09:40:34,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-22 09:40:34,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:40:34,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-22 09:40:34,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2020-12-22 09:40:34,005 INFO L87 Difference]: Start difference. First operand 7116 states and 9674 transitions. Second operand 26 states. [2020-12-22 09:40:35,071 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-12-22 09:40:35,353 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2020-12-22 09:40:35,605 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-12-22 09:40:35,859 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-12-22 09:40:36,113 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-12-22 09:40:36,374 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-12-22 09:40:36,656 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2020-12-22 09:40:36,949 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-12-22 09:40:37,157 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-12-22 09:40:37,322 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-12-22 09:40:37,513 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-12-22 09:40:38,088 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-12-22 09:40:38,525 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2020-12-22 09:40:38,726 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-12-22 09:40:39,056 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2020-12-22 09:40:39,373 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-12-22 09:40:39,685 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-12-22 09:40:39,838 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2020-12-22 09:40:40,272 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-12-22 09:40:40,983 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-12-22 09:40:41,391 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-12-22 09:40:41,696 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-12-22 09:40:41,918 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-12-22 09:40:42,206 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-12-22 09:40:42,430 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-12-22 09:40:42,639 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2020-12-22 09:40:42,899 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2020-12-22 09:40:43,065 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2020-12-22 09:40:43,476 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2020-12-22 09:40:45,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:40:45,447 INFO L93 Difference]: Finished difference Result 13247 states and 17367 transitions. [2020-12-22 09:40:45,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-12-22 09:40:45,447 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 68 [2020-12-22 09:40:45,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:40:45,458 INFO L225 Difference]: With dead ends: 13247 [2020-12-22 09:40:45,459 INFO L226 Difference]: Without dead ends: 10342 [2020-12-22 09:40:45,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2087 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=1297, Invalid=6359, Unknown=0, NotChecked=0, Total=7656 [2020-12-22 09:40:45,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10342 states. [2020-12-22 09:40:46,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10342 to 6278. [2020-12-22 09:40:46,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6278 states. [2020-12-22 09:40:46,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6278 states to 6278 states and 8693 transitions. [2020-12-22 09:40:46,149 INFO L78 Accepts]: Start accepts. Automaton has 6278 states and 8693 transitions. Word has length 68 [2020-12-22 09:40:46,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:40:46,149 INFO L481 AbstractCegarLoop]: Abstraction has 6278 states and 8693 transitions. [2020-12-22 09:40:46,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-12-22 09:40:46,149 INFO L276 IsEmpty]: Start isEmpty. Operand 6278 states and 8693 transitions. [2020-12-22 09:40:46,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 09:40:46,150 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:40:46,150 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 09:40:46,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:40:46,354 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:40:46,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:40:46,355 INFO L82 PathProgramCache]: Analyzing trace with hash 75217277, now seen corresponding path program 1 times [2020-12-22 09:40:46,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:40:46,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493723762] [2020-12-22 09:40:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:40:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:40:47,337 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:40:47,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493723762] [2020-12-22 09:40:47,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735010218] [2020-12-22 09:40:47,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:40:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:40:47,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 09:40:47,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:40:49,505 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-12-22 09:40:49,531 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 2, 1] term [2020-12-22 09:40:49,531 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 09:40:49,535 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 09:40:50,121 WARN L197 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 44