/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:45:45,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:45:45,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:45:45,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:45:45,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:45:45,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:45:45,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:45:45,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:45:45,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:45:45,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:45:45,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:45:45,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:45:45,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:45:45,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:45:45,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:45:45,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:45:45,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:45:45,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:45:45,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:45:45,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:45:45,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:45:45,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:45:45,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:45:45,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:45:45,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:45:45,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:45:45,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:45:45,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:45:45,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:45:45,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:45:45,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:45:45,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:45:45,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:45:45,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:45:45,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:45:45,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:45:45,721 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:45:45,751 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:45:45,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:45:45,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:45:45,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:45:45,755 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:45:45,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:45:45,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:45:45,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:45:45,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:45:45,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:45:45,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:45:45,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:45:45,757 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:45:45,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:45:45,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:45:45,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:45:45,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:45:45,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:45:45,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:45:45,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:45:45,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:45:45,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:45:45,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:45:45,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:45:45,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:45:45,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:45:46,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:45:46,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:45:46,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:45:46,287 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:45:46,288 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:45:46,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:45:46,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd890c384/85be29fcfd3f4adf92c394a9a10dda3b/FLAG27ef5c2a7 [2020-12-22 08:45:47,205 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:45:47,206 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:45:47,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd890c384/85be29fcfd3f4adf92c394a9a10dda3b/FLAG27ef5c2a7 [2020-12-22 08:45:47,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd890c384/85be29fcfd3f4adf92c394a9a10dda3b [2020-12-22 08:45:47,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:45:47,521 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:45:47,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:45:47,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:45:47,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:45:47,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:45:47" (1/1) ... [2020-12-22 08:45:47,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@488e9eca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:45:47, skipping insertion in model container [2020-12-22 08:45:47,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:45:47" (1/1) ... [2020-12-22 08:45:47,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:45:47,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:45:47,901 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5403,5416] [2020-12-22 08:45:47,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:45:48,013 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:45:48,076 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5403,5416] [2020-12-22 08:45:48,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:45:48,195 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:45:48,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:45:48 WrapperNode [2020-12-22 08:45:48,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:45:48,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:45:48,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:45:48,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:45:48,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:45:48" (1/1) ... [2020-12-22 08:45:48,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:45:48" (1/1) ... [2020-12-22 08:45:48,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:45:48,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:45:48,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:45:48,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:45:48,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:45:48" (1/1) ... [2020-12-22 08:45:48,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:45:48" (1/1) ... [2020-12-22 08:45:48,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:45:48" (1/1) ... [2020-12-22 08:45:48,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:45:48" (1/1) ... [2020-12-22 08:45:48,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:45:48" (1/1) ... [2020-12-22 08:45:48,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:45:48" (1/1) ... [2020-12-22 08:45:48,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:45:48" (1/1) ... [2020-12-22 08:45:48,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:45:48,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:45:48,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:45:48,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:45:48,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:45:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:45:48,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:45:48,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:45:48,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:45:48,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:45:49,532 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:45:49,533 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:45:49,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:45:49 BoogieIcfgContainer [2020-12-22 08:45:49,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:45:49,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:45:49,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:45:49,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:45:49,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:45:47" (1/3) ... [2020-12-22 08:45:49,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21cb49d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:45:49, skipping insertion in model container [2020-12-22 08:45:49,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:45:48" (2/3) ... [2020-12-22 08:45:49,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21cb49d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:45:49, skipping insertion in model container [2020-12-22 08:45:49,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:45:49" (3/3) ... [2020-12-22 08:45:49,565 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:45:49,577 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:45:49,586 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:45:49,651 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:45:49,728 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:45:49,729 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:45:49,729 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:45:49,729 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:45:49,729 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:45:49,730 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:45:49,731 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:45:49,731 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:45:49,762 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-12-22 08:45:49,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 08:45:49,774 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:45:49,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:45:49,776 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:45:49,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:45:49,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1055716622, now seen corresponding path program 1 times [2020-12-22 08:45:49,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:45:49,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015907739] [2020-12-22 08:45:49,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:45:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:45:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:45:50,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015907739] [2020-12-22 08:45:50,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:45:50,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:45:50,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362691241] [2020-12-22 08:45:50,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:45:50,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:45:50,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:45:50,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:45:50,383 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 3 states. [2020-12-22 08:45:50,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:45:50,471 INFO L93 Difference]: Finished difference Result 221 states and 356 transitions. [2020-12-22 08:45:50,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:45:50,473 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-12-22 08:45:50,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:45:50,491 INFO L225 Difference]: With dead ends: 221 [2020-12-22 08:45:50,491 INFO L226 Difference]: Without dead ends: 150 [2020-12-22 08:45:50,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:45:50,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-12-22 08:45:50,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2020-12-22 08:45:50,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-12-22 08:45:50,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 215 transitions. [2020-12-22 08:45:50,568 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 215 transitions. Word has length 60 [2020-12-22 08:45:50,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:45:50,570 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 215 transitions. [2020-12-22 08:45:50,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:45:50,570 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 215 transitions. [2020-12-22 08:45:50,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 08:45:50,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:45:50,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:45:50,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:45:50,574 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:45:50,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:45:50,575 INFO L82 PathProgramCache]: Analyzing trace with hash 160325981, now seen corresponding path program 1 times [2020-12-22 08:45:50,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:45:50,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671083869] [2020-12-22 08:45:50,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:45:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:45:50,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:45:50,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671083869] [2020-12-22 08:45:50,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:45:50,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:45:50,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937937282] [2020-12-22 08:45:50,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:45:50,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:45:50,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:45:50,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:45:50,808 INFO L87 Difference]: Start difference. First operand 148 states and 215 transitions. Second operand 3 states. [2020-12-22 08:45:50,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:45:50,873 INFO L93 Difference]: Finished difference Result 360 states and 551 transitions. [2020-12-22 08:45:50,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:45:50,875 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 08:45:50,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:45:50,884 INFO L225 Difference]: With dead ends: 360 [2020-12-22 08:45:50,884 INFO L226 Difference]: Without dead ends: 246 [2020-12-22 08:45:50,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:45:50,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-12-22 08:45:50,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 244. [2020-12-22 08:45:50,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-12-22 08:45:50,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 367 transitions. [2020-12-22 08:45:50,966 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 367 transitions. Word has length 61 [2020-12-22 08:45:50,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:45:50,969 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 367 transitions. [2020-12-22 08:45:50,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:45:50,969 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 367 transitions. [2020-12-22 08:45:50,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 08:45:50,972 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:45:50,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:45:50,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:45:50,976 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:45:50,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:45:50,978 INFO L82 PathProgramCache]: Analyzing trace with hash -2130731763, now seen corresponding path program 1 times [2020-12-22 08:45:50,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:45:50,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199408622] [2020-12-22 08:45:50,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:45:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:45:51,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:45:51,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199408622] [2020-12-22 08:45:51,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:45:51,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:45:51,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805030688] [2020-12-22 08:45:51,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:45:51,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:45:51,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:45:51,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:45:51,219 INFO L87 Difference]: Start difference. First operand 244 states and 367 transitions. Second operand 3 states. [2020-12-22 08:45:51,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:45:51,309 INFO L93 Difference]: Finished difference Result 632 states and 981 transitions. [2020-12-22 08:45:51,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:45:51,310 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-22 08:45:51,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:45:51,321 INFO L225 Difference]: With dead ends: 632 [2020-12-22 08:45:51,322 INFO L226 Difference]: Without dead ends: 422 [2020-12-22 08:45:51,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:45:51,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-12-22 08:45:51,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 420. [2020-12-22 08:45:51,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-12-22 08:45:51,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 643 transitions. [2020-12-22 08:45:51,416 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 643 transitions. Word has length 62 [2020-12-22 08:45:51,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:45:51,417 INFO L481 AbstractCegarLoop]: Abstraction has 420 states and 643 transitions. [2020-12-22 08:45:51,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:45:51,418 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 643 transitions. [2020-12-22 08:45:51,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 08:45:51,425 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:45:51,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:45:51,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:45:51,426 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:45:51,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:45:51,427 INFO L82 PathProgramCache]: Analyzing trace with hash 2078468845, now seen corresponding path program 1 times [2020-12-22 08:45:51,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:45:51,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946484099] [2020-12-22 08:45:51,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:45:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:45:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:45:51,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946484099] [2020-12-22 08:45:51,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:45:51,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:45:51,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377559270] [2020-12-22 08:45:51,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:45:51,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:45:51,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:45:51,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:45:51,633 INFO L87 Difference]: Start difference. First operand 420 states and 643 transitions. Second operand 3 states. [2020-12-22 08:45:51,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:45:51,699 INFO L93 Difference]: Finished difference Result 1128 states and 1757 transitions. [2020-12-22 08:45:51,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:45:51,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 08:45:51,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:45:51,705 INFO L225 Difference]: With dead ends: 1128 [2020-12-22 08:45:51,706 INFO L226 Difference]: Without dead ends: 742 [2020-12-22 08:45:51,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:45:51,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2020-12-22 08:45:51,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 740. [2020-12-22 08:45:51,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2020-12-22 08:45:51,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1139 transitions. [2020-12-22 08:45:51,764 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1139 transitions. Word has length 63 [2020-12-22 08:45:51,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:45:51,765 INFO L481 AbstractCegarLoop]: Abstraction has 740 states and 1139 transitions. [2020-12-22 08:45:51,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:45:51,765 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1139 transitions. [2020-12-22 08:45:51,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:45:51,767 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:45:51,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:45:51,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:45:51,768 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:45:51,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:45:51,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1380036385, now seen corresponding path program 1 times [2020-12-22 08:45:51,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:45:51,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164668561] [2020-12-22 08:45:51,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:45:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:45:52,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:45:52,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164668561] [2020-12-22 08:45:52,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:45:52,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:45:52,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983309237] [2020-12-22 08:45:52,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:45:52,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:45:52,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:45:52,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:45:52,018 INFO L87 Difference]: Start difference. First operand 740 states and 1139 transitions. Second operand 6 states. [2020-12-22 08:45:52,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:45:52,399 INFO L93 Difference]: Finished difference Result 2144 states and 3333 transitions. [2020-12-22 08:45:52,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:45:52,401 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-12-22 08:45:52,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:45:52,411 INFO L225 Difference]: With dead ends: 2144 [2020-12-22 08:45:52,412 INFO L226 Difference]: Without dead ends: 1438 [2020-12-22 08:45:52,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:45:52,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2020-12-22 08:45:52,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1436. [2020-12-22 08:45:52,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2020-12-22 08:45:52,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2219 transitions. [2020-12-22 08:45:52,530 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2219 transitions. Word has length 64 [2020-12-22 08:45:52,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:45:52,531 INFO L481 AbstractCegarLoop]: Abstraction has 1436 states and 2219 transitions. [2020-12-22 08:45:52,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:45:52,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2219 transitions. [2020-12-22 08:45:52,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:45:52,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:45:52,538 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:45:52,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:45:52,539 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:45:52,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:45:52,540 INFO L82 PathProgramCache]: Analyzing trace with hash -106168380, now seen corresponding path program 1 times [2020-12-22 08:45:52,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:45:52,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789813400] [2020-12-22 08:45:52,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:45:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:45:52,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:45:52,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789813400] [2020-12-22 08:45:52,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:45:52,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:45:52,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475773569] [2020-12-22 08:45:52,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:45:52,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:45:52,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:45:52,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:45:52,689 INFO L87 Difference]: Start difference. First operand 1436 states and 2219 transitions. Second operand 5 states. [2020-12-22 08:45:52,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:45:52,976 INFO L93 Difference]: Finished difference Result 2838 states and 4404 transitions. [2020-12-22 08:45:52,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:45:52,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-12-22 08:45:52,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:45:52,986 INFO L225 Difference]: With dead ends: 2838 [2020-12-22 08:45:52,987 INFO L226 Difference]: Without dead ends: 1436 [2020-12-22 08:45:52,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:45:52,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2020-12-22 08:45:53,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1436. [2020-12-22 08:45:53,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2020-12-22 08:45:53,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2203 transitions. [2020-12-22 08:45:53,125 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2203 transitions. Word has length 64 [2020-12-22 08:45:53,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:45:53,126 INFO L481 AbstractCegarLoop]: Abstraction has 1436 states and 2203 transitions. [2020-12-22 08:45:53,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:45:53,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2203 transitions. [2020-12-22 08:45:53,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:45:53,127 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:45:53,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:45:53,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:45:53,128 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:45:53,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:45:53,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1553197975, now seen corresponding path program 1 times [2020-12-22 08:45:53,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:45:53,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947590970] [2020-12-22 08:45:53,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:45:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:45:53,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:45:53,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947590970] [2020-12-22 08:45:53,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:45:53,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:45:53,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973286297] [2020-12-22 08:45:53,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:45:53,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:45:53,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:45:53,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:45:53,221 INFO L87 Difference]: Start difference. First operand 1436 states and 2203 transitions. Second operand 5 states. [2020-12-22 08:45:53,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:45:53,482 INFO L93 Difference]: Finished difference Result 2838 states and 4372 transitions. [2020-12-22 08:45:53,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:45:53,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-12-22 08:45:53,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:45:53,493 INFO L225 Difference]: With dead ends: 2838 [2020-12-22 08:45:53,493 INFO L226 Difference]: Without dead ends: 1436 [2020-12-22 08:45:53,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:45:53,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2020-12-22 08:45:53,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1436. [2020-12-22 08:45:53,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2020-12-22 08:45:53,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2187 transitions. [2020-12-22 08:45:53,666 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2187 transitions. Word has length 64 [2020-12-22 08:45:53,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:45:53,667 INFO L481 AbstractCegarLoop]: Abstraction has 1436 states and 2187 transitions. [2020-12-22 08:45:53,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:45:53,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2187 transitions. [2020-12-22 08:45:53,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:45:53,670 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:45:53,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:45:53,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:45:53,671 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:45:53,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:45:53,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1277697764, now seen corresponding path program 1 times [2020-12-22 08:45:53,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:45:53,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560852371] [2020-12-22 08:45:53,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:45:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:45:53,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:45:53,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560852371] [2020-12-22 08:45:53,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:45:53,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:45:53,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300391411] [2020-12-22 08:45:53,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:45:53,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:45:53,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:45:53,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:45:53,829 INFO L87 Difference]: Start difference. First operand 1436 states and 2187 transitions. Second operand 7 states. [2020-12-22 08:45:55,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:45:55,407 INFO L93 Difference]: Finished difference Result 15456 states and 23717 transitions. [2020-12-22 08:45:55,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:45:55,407 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-12-22 08:45:55,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:45:55,495 INFO L225 Difference]: With dead ends: 15456 [2020-12-22 08:45:55,496 INFO L226 Difference]: Without dead ends: 14054 [2020-12-22 08:45:55,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:45:55,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14054 states. [2020-12-22 08:45:55,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14054 to 2836. [2020-12-22 08:45:55,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2836 states. [2020-12-22 08:45:56,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2836 states to 2836 states and 4275 transitions. [2020-12-22 08:45:56,002 INFO L78 Accepts]: Start accepts. Automaton has 2836 states and 4275 transitions. Word has length 64 [2020-12-22 08:45:56,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:45:56,003 INFO L481 AbstractCegarLoop]: Abstraction has 2836 states and 4275 transitions. [2020-12-22 08:45:56,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:45:56,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2836 states and 4275 transitions. [2020-12-22 08:45:56,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:45:56,004 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:45:56,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:45:56,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:45:56,004 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:45:56,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:45:56,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1414916288, now seen corresponding path program 1 times [2020-12-22 08:45:56,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:45:56,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363291644] [2020-12-22 08:45:56,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:45:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:45:56,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:45:56,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363291644] [2020-12-22 08:45:56,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:45:56,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:45:56,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041720857] [2020-12-22 08:45:56,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:45:56,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:45:56,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:45:56,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:45:56,075 INFO L87 Difference]: Start difference. First operand 2836 states and 4275 transitions. Second operand 3 states. [2020-12-22 08:45:56,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:45:56,762 INFO L93 Difference]: Finished difference Result 8088 states and 12149 transitions. [2020-12-22 08:45:56,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:45:56,764 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 08:45:56,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:45:56,818 INFO L225 Difference]: With dead ends: 8088 [2020-12-22 08:45:56,818 INFO L226 Difference]: Without dead ends: 5286 [2020-12-22 08:45:56,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:45:56,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5286 states. [2020-12-22 08:45:57,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5286 to 5220. [2020-12-22 08:45:57,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5220 states. [2020-12-22 08:45:57,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5220 states to 5220 states and 7683 transitions. [2020-12-22 08:45:57,555 INFO L78 Accepts]: Start accepts. Automaton has 5220 states and 7683 transitions. Word has length 66 [2020-12-22 08:45:57,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:45:57,556 INFO L481 AbstractCegarLoop]: Abstraction has 5220 states and 7683 transitions. [2020-12-22 08:45:57,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:45:57,556 INFO L276 IsEmpty]: Start isEmpty. Operand 5220 states and 7683 transitions. [2020-12-22 08:45:57,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:45:57,560 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:45:57,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:45:57,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:45:57,562 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:45:57,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:45:57,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1393913633, now seen corresponding path program 1 times [2020-12-22 08:45:57,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:45:57,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848877480] [2020-12-22 08:45:57,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:45:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:45:57,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:45:57,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848877480] [2020-12-22 08:45:57,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:45:57,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:45:57,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042472597] [2020-12-22 08:45:57,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:45:57,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:45:57,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:45:57,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:45:57,935 INFO L87 Difference]: Start difference. First operand 5220 states and 7683 transitions. Second operand 7 states. [2020-12-22 08:45:58,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:45:58,763 INFO L93 Difference]: Finished difference Result 10408 states and 15333 transitions. [2020-12-22 08:45:58,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:45:58,765 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-12-22 08:45:58,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:45:58,785 INFO L225 Difference]: With dead ends: 10408 [2020-12-22 08:45:58,786 INFO L226 Difference]: Without dead ends: 5222 [2020-12-22 08:45:58,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:45:58,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5222 states. [2020-12-22 08:45:59,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5222 to 5220. [2020-12-22 08:45:59,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5220 states. [2020-12-22 08:45:59,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5220 states to 5220 states and 7619 transitions. [2020-12-22 08:45:59,493 INFO L78 Accepts]: Start accepts. Automaton has 5220 states and 7619 transitions. Word has length 66 [2020-12-22 08:45:59,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:45:59,493 INFO L481 AbstractCegarLoop]: Abstraction has 5220 states and 7619 transitions. [2020-12-22 08:45:59,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:45:59,494 INFO L276 IsEmpty]: Start isEmpty. Operand 5220 states and 7619 transitions. [2020-12-22 08:45:59,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:45:59,494 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:45:59,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:45:59,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:45:59,495 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:45:59,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:45:59,496 INFO L82 PathProgramCache]: Analyzing trace with hash -573930250, now seen corresponding path program 1 times [2020-12-22 08:45:59,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:45:59,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895020932] [2020-12-22 08:45:59,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:45:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:45:59,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:45:59,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895020932] [2020-12-22 08:45:59,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:45:59,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:45:59,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212005169] [2020-12-22 08:45:59,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:45:59,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:45:59,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:45:59,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:45:59,559 INFO L87 Difference]: Start difference. First operand 5220 states and 7619 transitions. Second operand 3 states. [2020-12-22 08:46:00,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:46:00,186 INFO L93 Difference]: Finished difference Result 10187 states and 15017 transitions. [2020-12-22 08:46:00,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:46:00,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-22 08:46:00,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:46:00,214 INFO L225 Difference]: With dead ends: 10187 [2020-12-22 08:46:00,214 INFO L226 Difference]: Without dead ends: 7384 [2020-12-22 08:46:00,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:46:00,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7384 states. [2020-12-22 08:46:01,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7384 to 7382. [2020-12-22 08:46:01,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7382 states. [2020-12-22 08:46:01,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7382 states to 7382 states and 10741 transitions. [2020-12-22 08:46:01,118 INFO L78 Accepts]: Start accepts. Automaton has 7382 states and 10741 transitions. Word has length 67 [2020-12-22 08:46:01,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:46:01,118 INFO L481 AbstractCegarLoop]: Abstraction has 7382 states and 10741 transitions. [2020-12-22 08:46:01,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:46:01,119 INFO L276 IsEmpty]: Start isEmpty. Operand 7382 states and 10741 transitions. [2020-12-22 08:46:01,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:46:01,119 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:46:01,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:46:01,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:46:01,120 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:46:01,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:46:01,127 INFO L82 PathProgramCache]: Analyzing trace with hash -263559015, now seen corresponding path program 1 times [2020-12-22 08:46:01,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:46:01,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553523062] [2020-12-22 08:46:01,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:46:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:46:01,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:46:01,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553523062] [2020-12-22 08:46:01,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:46:01,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:46:01,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841433848] [2020-12-22 08:46:01,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:46:01,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:46:01,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:46:01,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:46:01,326 INFO L87 Difference]: Start difference. First operand 7382 states and 10741 transitions. Second operand 5 states. [2020-12-22 08:46:02,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:46:02,771 INFO L93 Difference]: Finished difference Result 13277 states and 19252 transitions. [2020-12-22 08:46:02,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:46:02,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-22 08:46:02,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:46:02,811 INFO L225 Difference]: With dead ends: 13277 [2020-12-22 08:46:02,811 INFO L226 Difference]: Without dead ends: 13275 [2020-12-22 08:46:02,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:46:02,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13275 states. [2020-12-22 08:46:03,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13275 to 7638. [2020-12-22 08:46:03,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7638 states. [2020-12-22 08:46:03,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7638 states to 7638 states and 10965 transitions. [2020-12-22 08:46:03,616 INFO L78 Accepts]: Start accepts. Automaton has 7638 states and 10965 transitions. Word has length 67 [2020-12-22 08:46:03,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:46:03,616 INFO L481 AbstractCegarLoop]: Abstraction has 7638 states and 10965 transitions. [2020-12-22 08:46:03,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:46:03,616 INFO L276 IsEmpty]: Start isEmpty. Operand 7638 states and 10965 transitions. [2020-12-22 08:46:03,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 08:46:03,620 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:46:03,621 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:46:03,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:46:03,621 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:46:03,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:46:03,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1999510602, now seen corresponding path program 1 times [2020-12-22 08:46:03,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:46:03,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935965576] [2020-12-22 08:46:03,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:46:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:46:03,750 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 08:46:03,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935965576] [2020-12-22 08:46:03,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:46:03,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:46:03,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659929344] [2020-12-22 08:46:03,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:46:03,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:46:03,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:46:03,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:46:03,753 INFO L87 Difference]: Start difference. First operand 7638 states and 10965 transitions. Second operand 7 states. [2020-12-22 08:46:06,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:46:06,997 INFO L93 Difference]: Finished difference Result 47082 states and 67603 transitions. [2020-12-22 08:46:06,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:46:06,998 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-12-22 08:46:06,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:46:07,095 INFO L225 Difference]: With dead ends: 47082 [2020-12-22 08:46:07,095 INFO L226 Difference]: Without dead ends: 39480 [2020-12-22 08:46:07,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:46:07,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39480 states. [2020-12-22 08:46:08,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39480 to 15238. [2020-12-22 08:46:08,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15238 states. [2020-12-22 08:46:08,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15238 states to 15238 states and 21797 transitions. [2020-12-22 08:46:08,783 INFO L78 Accepts]: Start accepts. Automaton has 15238 states and 21797 transitions. Word has length 94 [2020-12-22 08:46:08,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:46:08,783 INFO L481 AbstractCegarLoop]: Abstraction has 15238 states and 21797 transitions. [2020-12-22 08:46:08,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:46:08,784 INFO L276 IsEmpty]: Start isEmpty. Operand 15238 states and 21797 transitions. [2020-12-22 08:46:08,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 08:46:08,787 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:46:08,788 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:46:08,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:46:08,788 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:46:08,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:46:08,789 INFO L82 PathProgramCache]: Analyzing trace with hash 845564496, now seen corresponding path program 1 times [2020-12-22 08:46:08,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:46:08,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646431339] [2020-12-22 08:46:08,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:46:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:46:08,908 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-22 08:46:08,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646431339] [2020-12-22 08:46:08,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:46:08,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:46:08,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372945302] [2020-12-22 08:46:08,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:46:08,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:46:08,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:46:08,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:46:08,911 INFO L87 Difference]: Start difference. First operand 15238 states and 21797 transitions. Second operand 7 states. [2020-12-22 08:46:13,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:46:13,044 INFO L93 Difference]: Finished difference Result 54682 states and 78435 transitions. [2020-12-22 08:46:13,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:46:13,045 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-12-22 08:46:13,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:46:13,150 INFO L225 Difference]: With dead ends: 54682 [2020-12-22 08:46:13,150 INFO L226 Difference]: Without dead ends: 47080 [2020-12-22 08:46:13,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:46:13,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47080 states. [2020-12-22 08:46:16,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47080 to 26654. [2020-12-22 08:46:16,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26654 states. [2020-12-22 08:46:16,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26654 states to 26654 states and 37965 transitions. [2020-12-22 08:46:16,093 INFO L78 Accepts]: Start accepts. Automaton has 26654 states and 37965 transitions. Word has length 94 [2020-12-22 08:46:16,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:46:16,093 INFO L481 AbstractCegarLoop]: Abstraction has 26654 states and 37965 transitions. [2020-12-22 08:46:16,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:46:16,094 INFO L276 IsEmpty]: Start isEmpty. Operand 26654 states and 37965 transitions. [2020-12-22 08:46:16,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 08:46:16,099 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:46:16,099 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:46:16,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:46:16,099 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:46:16,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:46:16,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1141609924, now seen corresponding path program 1 times [2020-12-22 08:46:16,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:46:16,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424120784] [2020-12-22 08:46:16,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:46:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:46:16,233 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 08:46:16,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424120784] [2020-12-22 08:46:16,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:46:16,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:46:16,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125551356] [2020-12-22 08:46:16,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:46:16,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:46:16,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:46:16,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:46:16,235 INFO L87 Difference]: Start difference. First operand 26654 states and 37965 transitions. Second operand 7 states. [2020-12-22 08:46:21,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:46:21,138 INFO L93 Difference]: Finished difference Result 62282 states and 89267 transitions. [2020-12-22 08:46:21,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:46:21,138 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-12-22 08:46:21,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:46:21,325 INFO L225 Difference]: With dead ends: 62282 [2020-12-22 08:46:21,325 INFO L226 Difference]: Without dead ends: 54680 [2020-12-22 08:46:21,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:46:21,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54680 states. [2020-12-22 08:46:24,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54680 to 34254. [2020-12-22 08:46:24,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34254 states. [2020-12-22 08:46:24,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34254 states to 34254 states and 48797 transitions. [2020-12-22 08:46:24,917 INFO L78 Accepts]: Start accepts. Automaton has 34254 states and 48797 transitions. Word has length 94 [2020-12-22 08:46:24,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:46:24,917 INFO L481 AbstractCegarLoop]: Abstraction has 34254 states and 48797 transitions. [2020-12-22 08:46:24,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:46:24,917 INFO L276 IsEmpty]: Start isEmpty. Operand 34254 states and 48797 transitions. [2020-12-22 08:46:24,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 08:46:24,922 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:46:24,922 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:46:24,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:46:24,922 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:46:24,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:46:24,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1724860738, now seen corresponding path program 1 times [2020-12-22 08:46:24,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:46:24,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921231307] [2020-12-22 08:46:24,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:46:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:46:25,231 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 08:46:25,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921231307] [2020-12-22 08:46:25,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:46:25,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:46:25,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129025940] [2020-12-22 08:46:25,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:46:25,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:46:25,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:46:25,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:46:25,236 INFO L87 Difference]: Start difference. First operand 34254 states and 48797 transitions. Second operand 7 states. [2020-12-22 08:46:31,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:46:31,285 INFO L93 Difference]: Finished difference Result 69882 states and 100099 transitions. [2020-12-22 08:46:31,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:46:31,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-12-22 08:46:31,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:46:31,364 INFO L225 Difference]: With dead ends: 69882 [2020-12-22 08:46:31,364 INFO L226 Difference]: Without dead ends: 62280 [2020-12-22 08:46:31,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:46:31,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62280 states. [2020-12-22 08:46:35,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62280 to 41854. [2020-12-22 08:46:35,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41854 states. [2020-12-22 08:46:36,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41854 states to 41854 states and 59629 transitions. [2020-12-22 08:46:36,058 INFO L78 Accepts]: Start accepts. Automaton has 41854 states and 59629 transitions. Word has length 94 [2020-12-22 08:46:36,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:46:36,059 INFO L481 AbstractCegarLoop]: Abstraction has 41854 states and 59629 transitions. [2020-12-22 08:46:36,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:46:36,059 INFO L276 IsEmpty]: Start isEmpty. Operand 41854 states and 59629 transitions. [2020-12-22 08:46:36,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 08:46:36,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:46:36,065 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:46:36,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:46:36,065 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:46:36,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:46:36,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1883520118, now seen corresponding path program 1 times [2020-12-22 08:46:36,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:46:36,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454063181] [2020-12-22 08:46:36,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:46:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:46:36,200 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 08:46:36,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454063181] [2020-12-22 08:46:36,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:46:36,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:46:36,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473776173] [2020-12-22 08:46:36,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:46:36,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:46:36,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:46:36,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:46:36,203 INFO L87 Difference]: Start difference. First operand 41854 states and 59629 transitions. Second operand 7 states. [2020-12-22 08:46:42,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:46:42,926 INFO L93 Difference]: Finished difference Result 72714 states and 104243 transitions. [2020-12-22 08:46:42,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:46:42,927 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-12-22 08:46:42,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:46:43,009 INFO L225 Difference]: With dead ends: 72714 [2020-12-22 08:46:43,010 INFO L226 Difference]: Without dead ends: 67496 [2020-12-22 08:46:43,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:46:43,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67496 states. [2020-12-22 08:46:48,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67496 to 47070. [2020-12-22 08:46:48,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47070 states. [2020-12-22 08:46:48,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47070 states to 47070 states and 67149 transitions. [2020-12-22 08:46:48,267 INFO L78 Accepts]: Start accepts. Automaton has 47070 states and 67149 transitions. Word has length 95 [2020-12-22 08:46:48,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:46:48,267 INFO L481 AbstractCegarLoop]: Abstraction has 47070 states and 67149 transitions. [2020-12-22 08:46:48,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:46:48,268 INFO L276 IsEmpty]: Start isEmpty. Operand 47070 states and 67149 transitions. [2020-12-22 08:46:48,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 08:46:48,275 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:46:48,275 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:46:48,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:46:48,275 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:46:48,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:46:48,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1641928633, now seen corresponding path program 1 times [2020-12-22 08:46:48,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:46:48,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269029104] [2020-12-22 08:46:48,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:46:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:46:48,544 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:46:48,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269029104] [2020-12-22 08:46:48,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703988598] [2020-12-22 08:46:48,545 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 08:46:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:46:48,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 08:46:48,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:46:49,262 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 08:46:49,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:46:49,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-22 08:46:49,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753180192] [2020-12-22 08:46:49,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 08:46:49,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:46:49,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 08:46:49,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:46:49,265 INFO L87 Difference]: Start difference. First operand 47070 states and 67149 transitions. Second operand 12 states. [2020-12-22 08:47:31,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:47:31,869 INFO L93 Difference]: Finished difference Result 335322 states and 475251 transitions. [2020-12-22 08:47:31,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-12-22 08:47:31,870 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-12-22 08:47:31,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:47:32,800 INFO L225 Difference]: With dead ends: 335322 [2020-12-22 08:47:32,800 INFO L226 Difference]: Without dead ends: 301416 [2020-12-22 08:47:32,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2136 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=975, Invalid=4725, Unknown=0, NotChecked=0, Total=5700 [2020-12-22 08:47:33,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301416 states. [2020-12-22 08:47:50,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301416 to 119470. [2020-12-22 08:47:50,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119470 states. [2020-12-22 08:47:51,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119470 states to 119470 states and 167901 transitions. [2020-12-22 08:47:51,202 INFO L78 Accepts]: Start accepts. Automaton has 119470 states and 167901 transitions. Word has length 96 [2020-12-22 08:47:51,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:47:51,203 INFO L481 AbstractCegarLoop]: Abstraction has 119470 states and 167901 transitions. [2020-12-22 08:47:51,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 08:47:51,203 INFO L276 IsEmpty]: Start isEmpty. Operand 119470 states and 167901 transitions. [2020-12-22 08:47:51,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 08:47:51,213 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:47:51,213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:47:51,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 08:47:51,427 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:47:51,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:47:51,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1309023430, now seen corresponding path program 1 times [2020-12-22 08:47:51,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:47:51,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465436424] [2020-12-22 08:47:51,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:47:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:47:51,761 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:47:51,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465436424] [2020-12-22 08:47:51,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:47:51,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:47:51,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401962951] [2020-12-22 08:47:51,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:47:51,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:47:51,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:47:51,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:47:51,764 INFO L87 Difference]: Start difference. First operand 119470 states and 167901 transitions. Second operand 3 states. [2020-12-22 08:48:01,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:48:01,123 INFO L93 Difference]: Finished difference Result 185878 states and 261654 transitions. [2020-12-22 08:48:01,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:48:01,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-12-22 08:48:01,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:48:01,273 INFO L225 Difference]: With dead ends: 185878 [2020-12-22 08:48:01,274 INFO L226 Difference]: Without dead ends: 66444 [2020-12-22 08:48:01,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:48:01,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66444 states. [2020-12-22 08:48:10,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66444 to 66442. [2020-12-22 08:48:10,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66442 states. [2020-12-22 08:48:10,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66442 states to 66442 states and 92482 transitions. [2020-12-22 08:48:10,868 INFO L78 Accepts]: Start accepts. Automaton has 66442 states and 92482 transitions. Word has length 96 [2020-12-22 08:48:10,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:48:10,869 INFO L481 AbstractCegarLoop]: Abstraction has 66442 states and 92482 transitions. [2020-12-22 08:48:10,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:48:10,869 INFO L276 IsEmpty]: Start isEmpty. Operand 66442 states and 92482 transitions. [2020-12-22 08:48:10,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 08:48:10,873 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:48:10,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:48:10,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:48:10,874 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:48:10,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:48:10,874 INFO L82 PathProgramCache]: Analyzing trace with hash 578980980, now seen corresponding path program 1 times [2020-12-22 08:48:10,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:48:10,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477594394] [2020-12-22 08:48:10,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:48:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:48:11,285 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:48:11,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477594394] [2020-12-22 08:48:11,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910609959] [2020-12-22 08:48:11,286 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 08:48:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:48:11,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 08:48:11,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:48:11,758 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 08:48:11,966 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 38 [2020-12-22 08:48:12,402 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:48:12,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:48:12,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 20 [2020-12-22 08:48:12,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506092474] [2020-12-22 08:48:12,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 08:48:12,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:48:12,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 08:48:12,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:48:12,405 INFO L87 Difference]: Start difference. First operand 66442 states and 92482 transitions. Second operand 20 states. [2020-12-22 08:48:13,196 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-12-22 08:48:13,636 WARN L197 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-12-22 08:48:14,094 WARN L197 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 101 [2020-12-22 08:48:14,555 WARN L197 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98 [2020-12-22 08:48:15,029 WARN L197 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 104 [2020-12-22 08:48:15,812 WARN L197 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 110 [2020-12-22 08:48:16,359 WARN L197 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 101 [2020-12-22 08:48:16,855 WARN L197 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 110 [2020-12-22 08:48:17,561 WARN L197 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 121 [2020-12-22 08:48:18,093 WARN L197 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 112 [2020-12-22 08:48:18,679 WARN L197 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 110 [2020-12-22 08:48:19,427 WARN L197 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 101 [2020-12-22 08:48:19,959 WARN L197 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 110 [2020-12-22 08:48:20,521 WARN L197 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 121 [2020-12-22 08:48:21,113 WARN L197 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 110 [2020-12-22 08:48:21,760 WARN L197 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 104 [2020-12-22 08:48:22,334 WARN L197 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 115 [2020-12-22 08:48:22,951 WARN L197 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 104 [2020-12-22 08:48:24,945 WARN L197 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 104 [2020-12-22 08:48:25,526 WARN L197 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 104 [2020-12-22 08:48:26,132 WARN L197 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 115 [2020-12-22 08:48:26,733 WARN L197 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 115 [2020-12-22 08:48:27,339 WARN L197 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 106 [2020-12-22 08:48:28,017 WARN L197 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 104 [2020-12-22 08:48:28,551 WARN L197 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 104 [2020-12-22 08:48:29,077 WARN L197 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98 [2020-12-22 08:48:29,732 WARN L197 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 109 [2020-12-22 08:48:30,250 WARN L197 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 95 [2020-12-22 08:48:30,828 WARN L197 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2020-12-22 08:48:31,431 WARN L197 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2020-12-22 08:48:32,039 WARN L197 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-12-22 08:48:32,809 WARN L197 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-12-22 08:48:33,180 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-12-22 08:48:33,569 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-12-22 08:48:34,175 WARN L197 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 98 [2020-12-22 08:48:34,851 WARN L197 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 107 [2020-12-22 08:48:35,682 WARN L197 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 118 [2020-12-22 08:48:36,448 WARN L197 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 98 [2020-12-22 08:48:37,076 WARN L197 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 98 [2020-12-22 08:48:37,440 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-12-22 08:48:37,908 WARN L197 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-12-22 08:48:38,494 WARN L197 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-12-22 08:48:39,174 WARN L197 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2020-12-22 08:48:40,028 WARN L197 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-12-22 08:48:40,858 WARN L197 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 107 [2020-12-22 08:48:41,792 WARN L197 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2020-12-22 08:48:42,576 WARN L197 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 95 [2020-12-22 08:48:45,476 WARN L197 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 104 [2020-12-22 08:48:46,293 WARN L197 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 107 [2020-12-22 08:48:46,921 WARN L197 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-12-22 08:48:47,368 WARN L197 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-12-22 08:48:48,240 WARN L197 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 113 [2020-12-22 08:48:49,138 WARN L197 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 104 [2020-12-22 08:48:50,028 WARN L197 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 107 [2020-12-22 08:48:50,951 WARN L197 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2020-12-22 08:48:51,865 WARN L197 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2020-12-22 08:48:52,784 WARN L197 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2020-12-22 08:48:53,565 WARN L197 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 95 [2020-12-22 08:48:59,445 WARN L197 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2020-12-22 08:49:00,327 WARN L197 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 107 [2020-12-22 08:49:01,518 WARN L197 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 102 [2020-12-22 08:49:02,335 WARN L197 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2020-12-22 08:49:02,726 WARN L197 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-12-22 08:49:03,565 WARN L197 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2020-12-22 08:49:04,670 WARN L197 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 108 [2020-12-22 08:49:05,804 WARN L197 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 105 [2020-12-22 08:49:06,789 WARN L197 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-12-22 08:49:07,215 WARN L197 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-12-22 08:49:08,387 WARN L197 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-12-22 08:49:09,275 WARN L197 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2020-12-22 08:49:10,060 WARN L197 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-12-22 08:49:11,357 WARN L197 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 122 DAG size of output: 111 [2020-12-22 08:49:12,471 WARN L197 SmtUtils]: Spent 974.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-12-22 08:49:13,501 WARN L197 SmtUtils]: Spent 946.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96 [2020-12-22 08:49:14,947 WARN L197 SmtUtils]: Spent 1000.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 95 [2020-12-22 08:49:15,988 WARN L197 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2020-12-22 08:49:17,297 WARN L197 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 119 DAG size of output: 108 [2020-12-22 08:49:18,026 WARN L197 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-12-22 08:49:18,745 WARN L197 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-12-22 08:49:19,070 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-12-22 08:49:20,181 WARN L197 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 105 DAG size of output: 102 [2020-12-22 08:49:21,502 WARN L197 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 124 DAG size of output: 113 [2020-12-22 08:49:22,536 WARN L197 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-12-22 08:49:23,713 WARN L197 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-12-22 08:49:25,266 WARN L197 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 122 DAG size of output: 111 [2020-12-22 08:49:26,079 WARN L197 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-12-22 08:49:26,429 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-12-22 08:49:26,790 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-12-22 08:49:28,144 WARN L197 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2020-12-22 08:49:29,222 WARN L197 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-12-22 08:49:29,898 WARN L197 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-12-22 08:49:30,472 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-12-22 08:49:31,441 WARN L197 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-12-22 08:49:36,359 WARN L197 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 135 DAG size of output: 124 [2020-12-22 08:49:38,093 WARN L197 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 130 DAG size of output: 119 [2020-12-22 08:49:38,905 WARN L197 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-12-22 08:49:40,663 WARN L197 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 119 DAG size of output: 112 [2020-12-22 08:49:42,209 WARN L197 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2020-12-22 08:49:43,544 WARN L197 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 133 DAG size of output: 122 [2020-12-22 08:49:44,497 WARN L197 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-12-22 08:49:46,190 WARN L197 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 113 DAG size of output: 110 [2020-12-22 08:49:46,642 WARN L197 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-22 08:49:48,545 WARN L197 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 124 DAG size of output: 116 [2020-12-22 08:49:50,789 WARN L197 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 122 DAG size of output: 115