/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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:07:23,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:07:23,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:07:23,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:07:23,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:07:23,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:07:23,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:07:23,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:07:23,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:07:23,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:07:23,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:07:23,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:07:23,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:07:23,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:07:23,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:07:23,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:07:23,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:07:23,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:07:23,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:07:23,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:07:23,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:07:23,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:07:23,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:07:23,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:07:23,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 09:07:23,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 09:07:23,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 09:07:23,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 09:07:23,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 09:07:23,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 09:07:23,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 09:07:23,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 09:07:23,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 09:07:23,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 09:07:23,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 09:07:23,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 09:07:23,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 09:07:23,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 09:07:23,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:07:23,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:07:23,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:07:23,281 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:07:23,309 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:07:23,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:07:23,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:07:23,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:07:23,311 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:07:23,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:07:23,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:07:23,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:07:23,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:07:23,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:07:23,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:07:23,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:07:23,313 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:07:23,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:07:23,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:07:23,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:07:23,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:07:23,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:07:23,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:07:23,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:07:23,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:07:23,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:07:23,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:07:23,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:07:23,315 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:07:23,315 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:07:23,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:07:23,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:07:23,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:07:23,696 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:07:23,696 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:07:23,697 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-12-22 09:07:23,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acd03d26c/efce12ca277848f2bdeaf1258dbd157b/FLAGc50f25a8f [2020-12-22 09:07:24,530 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:07:24,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-12-22 09:07:24,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acd03d26c/efce12ca277848f2bdeaf1258dbd157b/FLAGc50f25a8f [2020-12-22 09:07:24,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acd03d26c/efce12ca277848f2bdeaf1258dbd157b [2020-12-22 09:07:24,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:07:24,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:07:24,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:07:24,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:07:24,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:07:24,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:07:24" (1/1) ... [2020-12-22 09:07:24,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26997d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:24, skipping insertion in model container [2020-12-22 09:07:24,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:07:24" (1/1) ... [2020-12-22 09:07:24,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:07:24,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:07:25,235 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[13270,13283] [2020-12-22 09:07:25,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:07:25,340 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:07:25,487 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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[13270,13283] [2020-12-22 09:07:25,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:07:25,671 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:07:25,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:25 WrapperNode [2020-12-22 09:07:25,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:07:25,674 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:07:25,675 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:07:25,675 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:07:25,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:25" (1/1) ... [2020-12-22 09:07:25,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:25" (1/1) ... [2020-12-22 09:07:25,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:07:25,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:07:25,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:07:25,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:07:25,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:25" (1/1) ... [2020-12-22 09:07:25,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:25" (1/1) ... [2020-12-22 09:07:25,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:25" (1/1) ... [2020-12-22 09:07:25,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:25" (1/1) ... [2020-12-22 09:07:25,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:25" (1/1) ... [2020-12-22 09:07:25,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:25" (1/1) ... [2020-12-22 09:07:25,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:25" (1/1) ... [2020-12-22 09:07:25,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:07:25,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:07:25,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:07:25,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:07:25,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:07:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:07:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:07:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:07:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:07:27,825 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:07:27,825 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:07:27,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:07:27 BoogieIcfgContainer [2020-12-22 09:07:27,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:07:27,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:07:27,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:07:27,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:07:27,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:07:24" (1/3) ... [2020-12-22 09:07:27,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a04360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:07:27, skipping insertion in model container [2020-12-22 09:07:27,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:25" (2/3) ... [2020-12-22 09:07:27,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a04360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:07:27, skipping insertion in model container [2020-12-22 09:07:27,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:07:27" (3/3) ... [2020-12-22 09:07:27,837 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-12-22 09:07:27,852 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:07:27,858 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 09:07:27,881 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 09:07:27,910 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:07:27,910 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:07:27,911 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:07:27,911 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:07:27,911 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:07:27,911 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:07:27,911 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:07:27,911 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:07:27,934 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states. [2020-12-22 09:07:27,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 09:07:27,951 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:27,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:07:27,952 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:27,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:27,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1594884720, now seen corresponding path program 1 times [2020-12-22 09:07:27,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:27,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663293096] [2020-12-22 09:07:27,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:28,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:07:28,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663293096] [2020-12-22 09:07:28,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:28,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:07:28,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410974421] [2020-12-22 09:07:28,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:07:28,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:28,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:07:28,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:28,627 INFO L87 Difference]: Start difference. First operand 342 states. Second operand 3 states. [2020-12-22 09:07:28,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:28,785 INFO L93 Difference]: Finished difference Result 628 states and 1091 transitions. [2020-12-22 09:07:28,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:07:28,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2020-12-22 09:07:28,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:28,807 INFO L225 Difference]: With dead ends: 628 [2020-12-22 09:07:28,808 INFO L226 Difference]: Without dead ends: 473 [2020-12-22 09:07:28,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:28,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2020-12-22 09:07:28,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 471. [2020-12-22 09:07:28,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-12-22 09:07:28,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 779 transitions. [2020-12-22 09:07:28,901 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 779 transitions. Word has length 118 [2020-12-22 09:07:28,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:28,902 INFO L481 AbstractCegarLoop]: Abstraction has 471 states and 779 transitions. [2020-12-22 09:07:28,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:07:28,903 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 779 transitions. [2020-12-22 09:07:28,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-22 09:07:28,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:28,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:07:28,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:07:28,910 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:28,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:28,911 INFO L82 PathProgramCache]: Analyzing trace with hash -910979864, now seen corresponding path program 1 times [2020-12-22 09:07:28,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:28,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252830177] [2020-12-22 09:07:28,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:29,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:07:29,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252830177] [2020-12-22 09:07:29,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:29,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:07:29,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762623855] [2020-12-22 09:07:29,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:07:29,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:29,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:07:29,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:29,200 INFO L87 Difference]: Start difference. First operand 471 states and 779 transitions. Second operand 3 states. [2020-12-22 09:07:29,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:29,298 INFO L93 Difference]: Finished difference Result 1007 states and 1675 transitions. [2020-12-22 09:07:29,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:07:29,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2020-12-22 09:07:29,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:29,312 INFO L225 Difference]: With dead ends: 1007 [2020-12-22 09:07:29,312 INFO L226 Difference]: Without dead ends: 729 [2020-12-22 09:07:29,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:29,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2020-12-22 09:07:29,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 727. [2020-12-22 09:07:29,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-12-22 09:07:29,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1206 transitions. [2020-12-22 09:07:29,390 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1206 transitions. Word has length 121 [2020-12-22 09:07:29,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:29,391 INFO L481 AbstractCegarLoop]: Abstraction has 727 states and 1206 transitions. [2020-12-22 09:07:29,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:07:29,391 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1206 transitions. [2020-12-22 09:07:29,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-12-22 09:07:29,397 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:29,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:07:29,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:07:29,398 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:29,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:29,399 INFO L82 PathProgramCache]: Analyzing trace with hash -195863697, now seen corresponding path program 1 times [2020-12-22 09:07:29,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:29,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189731818] [2020-12-22 09:07:29,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:29,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:07:29,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189731818] [2020-12-22 09:07:29,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:29,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:07:29,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292735825] [2020-12-22 09:07:29,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:07:29,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:29,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:07:29,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:29,619 INFO L87 Difference]: Start difference. First operand 727 states and 1206 transitions. Second operand 3 states. [2020-12-22 09:07:29,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:29,701 INFO L93 Difference]: Finished difference Result 1755 states and 2920 transitions. [2020-12-22 09:07:29,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:07:29,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2020-12-22 09:07:29,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:29,712 INFO L225 Difference]: With dead ends: 1755 [2020-12-22 09:07:29,713 INFO L226 Difference]: Without dead ends: 1221 [2020-12-22 09:07:29,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:29,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2020-12-22 09:07:29,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1219. [2020-12-22 09:07:29,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1219 states. [2020-12-22 09:07:29,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 2022 transitions. [2020-12-22 09:07:29,779 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 2022 transitions. Word has length 124 [2020-12-22 09:07:29,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:29,787 INFO L481 AbstractCegarLoop]: Abstraction has 1219 states and 2022 transitions. [2020-12-22 09:07:29,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:07:29,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 2022 transitions. [2020-12-22 09:07:29,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-22 09:07:29,791 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:29,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:07:29,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:07:29,792 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:29,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:29,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1851247163, now seen corresponding path program 1 times [2020-12-22 09:07:29,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:29,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586957837] [2020-12-22 09:07:29,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:29,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:07:29,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586957837] [2020-12-22 09:07:29,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:29,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:07:29,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488210395] [2020-12-22 09:07:29,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:07:29,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:29,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:07:29,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:29,997 INFO L87 Difference]: Start difference. First operand 1219 states and 2022 transitions. Second operand 3 states. [2020-12-22 09:07:30,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:30,115 INFO L93 Difference]: Finished difference Result 3191 states and 5296 transitions. [2020-12-22 09:07:30,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:07:30,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-12-22 09:07:30,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:30,130 INFO L225 Difference]: With dead ends: 3191 [2020-12-22 09:07:30,131 INFO L226 Difference]: Without dead ends: 2165 [2020-12-22 09:07:30,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:30,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2020-12-22 09:07:30,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 2163. [2020-12-22 09:07:30,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2163 states. [2020-12-22 09:07:30,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 3578 transitions. [2020-12-22 09:07:30,293 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 3578 transitions. Word has length 127 [2020-12-22 09:07:30,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:30,294 INFO L481 AbstractCegarLoop]: Abstraction has 2163 states and 3578 transitions. [2020-12-22 09:07:30,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:07:30,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 3578 transitions. [2020-12-22 09:07:30,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-22 09:07:30,307 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:30,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:07:30,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:07:30,308 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:30,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:30,309 INFO L82 PathProgramCache]: Analyzing trace with hash -559497898, now seen corresponding path program 1 times [2020-12-22 09:07:30,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:30,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158845298] [2020-12-22 09:07:30,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:30,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:07:30,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158845298] [2020-12-22 09:07:30,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:30,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 09:07:30,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612188088] [2020-12-22 09:07:30,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:07:30,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:30,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:07:30,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:07:30,778 INFO L87 Difference]: Start difference. First operand 2163 states and 3578 transitions. Second operand 6 states. [2020-12-22 09:07:31,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:31,725 INFO L93 Difference]: Finished difference Result 11283 states and 18810 transitions. [2020-12-22 09:07:31,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 09:07:31,728 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2020-12-22 09:07:31,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:31,781 INFO L225 Difference]: With dead ends: 11283 [2020-12-22 09:07:31,782 INFO L226 Difference]: Without dead ends: 9313 [2020-12-22 09:07:31,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:07:31,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9313 states. [2020-12-22 09:07:32,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9313 to 4001. [2020-12-22 09:07:32,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4001 states. [2020-12-22 09:07:32,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 6621 transitions. [2020-12-22 09:07:32,167 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 6621 transitions. Word has length 130 [2020-12-22 09:07:32,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:32,167 INFO L481 AbstractCegarLoop]: Abstraction has 4001 states and 6621 transitions. [2020-12-22 09:07:32,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:07:32,167 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 6621 transitions. [2020-12-22 09:07:32,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 09:07:32,171 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:32,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:07:32,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:07:32,172 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:32,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:32,173 INFO L82 PathProgramCache]: Analyzing trace with hash -231627666, now seen corresponding path program 1 times [2020-12-22 09:07:32,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:32,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669904454] [2020-12-22 09:07:32,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:32,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:07:32,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669904454] [2020-12-22 09:07:32,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:32,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:07:32,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276440984] [2020-12-22 09:07:32,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:07:32,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:32,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:07:32,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:07:32,303 INFO L87 Difference]: Start difference. First operand 4001 states and 6621 transitions. Second operand 4 states. [2020-12-22 09:07:33,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:33,056 INFO L93 Difference]: Finished difference Result 11713 states and 19481 transitions. [2020-12-22 09:07:33,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:07:33,057 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-12-22 09:07:33,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:33,103 INFO L225 Difference]: With dead ends: 11713 [2020-12-22 09:07:33,104 INFO L226 Difference]: Without dead ends: 7905 [2020-12-22 09:07:33,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:07:33,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7905 states. [2020-12-22 09:07:33,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7905 to 5936. [2020-12-22 09:07:33,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5936 states. [2020-12-22 09:07:33,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5936 states to 5936 states and 9836 transitions. [2020-12-22 09:07:33,616 INFO L78 Accepts]: Start accepts. Automaton has 5936 states and 9836 transitions. Word has length 131 [2020-12-22 09:07:33,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:33,617 INFO L481 AbstractCegarLoop]: Abstraction has 5936 states and 9836 transitions. [2020-12-22 09:07:33,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:07:33,617 INFO L276 IsEmpty]: Start isEmpty. Operand 5936 states and 9836 transitions. [2020-12-22 09:07:33,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-22 09:07:33,622 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:33,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:07:33,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:07:33,623 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:33,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:33,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1747933454, now seen corresponding path program 1 times [2020-12-22 09:07:33,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:33,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729367502] [2020-12-22 09:07:33,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:33,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:07:33,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729367502] [2020-12-22 09:07:33,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:33,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:07:33,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618964307] [2020-12-22 09:07:33,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:07:33,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:33,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:07:33,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:33,729 INFO L87 Difference]: Start difference. First operand 5936 states and 9836 transitions. Second operand 3 states. [2020-12-22 09:07:34,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:34,382 INFO L93 Difference]: Finished difference Result 13025 states and 21678 transitions. [2020-12-22 09:07:34,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:07:34,383 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2020-12-22 09:07:34,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:34,431 INFO L225 Difference]: With dead ends: 13025 [2020-12-22 09:07:34,432 INFO L226 Difference]: Without dead ends: 9024 [2020-12-22 09:07:34,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:34,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9024 states. [2020-12-22 09:07:35,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9024 to 9022. [2020-12-22 09:07:35,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9022 states. [2020-12-22 09:07:35,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9022 states to 9022 states and 14950 transitions. [2020-12-22 09:07:35,047 INFO L78 Accepts]: Start accepts. Automaton has 9022 states and 14950 transitions. Word has length 132 [2020-12-22 09:07:35,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:35,047 INFO L481 AbstractCegarLoop]: Abstraction has 9022 states and 14950 transitions. [2020-12-22 09:07:35,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:07:35,047 INFO L276 IsEmpty]: Start isEmpty. Operand 9022 states and 14950 transitions. [2020-12-22 09:07:35,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-22 09:07:35,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:35,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:07:35,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:07:35,051 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:35,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:35,051 INFO L82 PathProgramCache]: Analyzing trace with hash 579129211, now seen corresponding path program 1 times [2020-12-22 09:07:35,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:35,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3059200] [2020-12-22 09:07:35,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:35,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:07:35,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3059200] [2020-12-22 09:07:35,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:35,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:07:35,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228614451] [2020-12-22 09:07:35,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:07:35,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:35,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:07:35,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:35,204 INFO L87 Difference]: Start difference. First operand 9022 states and 14950 transitions. Second operand 3 states. [2020-12-22 09:07:35,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:35,913 INFO L93 Difference]: Finished difference Result 17368 states and 28819 transitions. [2020-12-22 09:07:35,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:07:35,914 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2020-12-22 09:07:35,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:35,944 INFO L225 Difference]: With dead ends: 17368 [2020-12-22 09:07:35,945 INFO L226 Difference]: Without dead ends: 12606 [2020-12-22 09:07:35,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:35,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12606 states. [2020-12-22 09:07:36,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12606 to 12604. [2020-12-22 09:07:36,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12604 states. [2020-12-22 09:07:36,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12604 states to 12604 states and 20840 transitions. [2020-12-22 09:07:36,841 INFO L78 Accepts]: Start accepts. Automaton has 12604 states and 20840 transitions. Word has length 132 [2020-12-22 09:07:36,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:36,841 INFO L481 AbstractCegarLoop]: Abstraction has 12604 states and 20840 transitions. [2020-12-22 09:07:36,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:07:36,842 INFO L276 IsEmpty]: Start isEmpty. Operand 12604 states and 20840 transitions. [2020-12-22 09:07:36,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-22 09:07:36,844 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:36,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:07:36,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:07:36,845 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:36,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:36,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1676490411, now seen corresponding path program 1 times [2020-12-22 09:07:36,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:36,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208904303] [2020-12-22 09:07:36,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:36,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:07:36,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208904303] [2020-12-22 09:07:36,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:36,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:07:36,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173669653] [2020-12-22 09:07:36,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:07:36,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:36,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:07:36,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:36,959 INFO L87 Difference]: Start difference. First operand 12604 states and 20840 transitions. Second operand 3 states. [2020-12-22 09:07:37,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:37,862 INFO L93 Difference]: Finished difference Result 24110 states and 39925 transitions. [2020-12-22 09:07:37,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:07:37,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2020-12-22 09:07:37,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:37,909 INFO L225 Difference]: With dead ends: 24110 [2020-12-22 09:07:37,909 INFO L226 Difference]: Without dead ends: 17468 [2020-12-22 09:07:37,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:37,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17468 states. [2020-12-22 09:07:38,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17468 to 17466. [2020-12-22 09:07:38,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17466 states. [2020-12-22 09:07:38,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17466 states to 17466 states and 28808 transitions. [2020-12-22 09:07:38,803 INFO L78 Accepts]: Start accepts. Automaton has 17466 states and 28808 transitions. Word has length 132 [2020-12-22 09:07:38,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:38,804 INFO L481 AbstractCegarLoop]: Abstraction has 17466 states and 28808 transitions. [2020-12-22 09:07:38,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:07:38,804 INFO L276 IsEmpty]: Start isEmpty. Operand 17466 states and 28808 transitions. [2020-12-22 09:07:38,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-22 09:07:38,805 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:38,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:07:38,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:07:38,806 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:38,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:38,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1346972957, now seen corresponding path program 1 times [2020-12-22 09:07:38,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:38,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810723731] [2020-12-22 09:07:38,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:38,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:07:38,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810723731] [2020-12-22 09:07:38,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:38,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:07:38,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312231536] [2020-12-22 09:07:38,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:07:38,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:38,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:07:38,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:07:38,973 INFO L87 Difference]: Start difference. First operand 17466 states and 28808 transitions. Second operand 4 states. [2020-12-22 09:07:41,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:41,095 INFO L93 Difference]: Finished difference Result 56537 states and 93383 transitions. [2020-12-22 09:07:41,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:07:41,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-12-22 09:07:41,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:41,182 INFO L225 Difference]: With dead ends: 56537 [2020-12-22 09:07:41,182 INFO L226 Difference]: Without dead ends: 39310 [2020-12-22 09:07:41,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:07:41,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39310 states. [2020-12-22 09:07:42,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39310 to 28329. [2020-12-22 09:07:42,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28329 states. [2020-12-22 09:07:42,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28329 states to 28329 states and 46597 transitions. [2020-12-22 09:07:42,613 INFO L78 Accepts]: Start accepts. Automaton has 28329 states and 46597 transitions. Word has length 132 [2020-12-22 09:07:42,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:42,614 INFO L481 AbstractCegarLoop]: Abstraction has 28329 states and 46597 transitions. [2020-12-22 09:07:42,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:07:42,614 INFO L276 IsEmpty]: Start isEmpty. Operand 28329 states and 46597 transitions. [2020-12-22 09:07:42,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-22 09:07:42,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:42,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:07:42,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:07:42,616 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:42,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:42,617 INFO L82 PathProgramCache]: Analyzing trace with hash -434438713, now seen corresponding path program 1 times [2020-12-22 09:07:42,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:42,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525652921] [2020-12-22 09:07:42,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:42,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:07:42,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525652921] [2020-12-22 09:07:42,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:42,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:07:42,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937882059] [2020-12-22 09:07:42,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:07:42,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:42,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:07:42,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:42,707 INFO L87 Difference]: Start difference. First operand 28329 states and 46597 transitions. Second operand 3 states. [2020-12-22 09:07:44,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:44,695 INFO L93 Difference]: Finished difference Result 54295 states and 89424 transitions. [2020-12-22 09:07:44,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:07:44,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2020-12-22 09:07:44,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:44,771 INFO L225 Difference]: With dead ends: 54295 [2020-12-22 09:07:44,771 INFO L226 Difference]: Without dead ends: 39073 [2020-12-22 09:07:44,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:44,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39073 states. [2020-12-22 09:07:46,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39073 to 39071. [2020-12-22 09:07:46,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39071 states. [2020-12-22 09:07:46,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39071 states to 39071 states and 64051 transitions. [2020-12-22 09:07:46,992 INFO L78 Accepts]: Start accepts. Automaton has 39071 states and 64051 transitions. Word has length 132 [2020-12-22 09:07:46,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:46,992 INFO L481 AbstractCegarLoop]: Abstraction has 39071 states and 64051 transitions. [2020-12-22 09:07:46,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:07:46,993 INFO L276 IsEmpty]: Start isEmpty. Operand 39071 states and 64051 transitions. [2020-12-22 09:07:46,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-22 09:07:46,994 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:46,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:07:46,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:07:46,995 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:46,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:46,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1251457259, now seen corresponding path program 1 times [2020-12-22 09:07:46,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:46,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149170059] [2020-12-22 09:07:46,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:47,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:07:47,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149170059] [2020-12-22 09:07:47,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:47,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:07:47,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464906651] [2020-12-22 09:07:47,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:07:47,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:47,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:07:47,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:07:47,162 INFO L87 Difference]: Start difference. First operand 39071 states and 64051 transitions. Second operand 4 states. [2020-12-22 09:07:51,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:51,119 INFO L93 Difference]: Finished difference Result 126537 states and 207711 transitions. [2020-12-22 09:07:51,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:07:51,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-12-22 09:07:51,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:51,376 INFO L225 Difference]: With dead ends: 126537 [2020-12-22 09:07:51,376 INFO L226 Difference]: Without dead ends: 87727 [2020-12-22 09:07:51,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:07:51,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87727 states. [2020-12-22 09:07:54,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87727 to 63256. [2020-12-22 09:07:54,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63256 states. [2020-12-22 09:07:54,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63256 states to 63256 states and 103358 transitions. [2020-12-22 09:07:54,904 INFO L78 Accepts]: Start accepts. Automaton has 63256 states and 103358 transitions. Word has length 133 [2020-12-22 09:07:54,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:54,904 INFO L481 AbstractCegarLoop]: Abstraction has 63256 states and 103358 transitions. [2020-12-22 09:07:54,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:07:54,905 INFO L276 IsEmpty]: Start isEmpty. Operand 63256 states and 103358 transitions. [2020-12-22 09:07:54,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 09:07:54,906 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:54,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:07:54,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:07:54,907 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:54,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:54,908 INFO L82 PathProgramCache]: Analyzing trace with hash -193857308, now seen corresponding path program 1 times [2020-12-22 09:07:54,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:54,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724582598] [2020-12-22 09:07:54,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:55,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:07:55,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724582598] [2020-12-22 09:07:55,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:55,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:07:55,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761446383] [2020-12-22 09:07:55,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:07:55,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:55,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:07:55,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:07:55,019 INFO L87 Difference]: Start difference. First operand 63256 states and 103358 transitions. Second operand 4 states. [2020-12-22 09:08:01,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:08:01,721 INFO L93 Difference]: Finished difference Result 202567 states and 331417 transitions. [2020-12-22 09:08:01,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:08:01,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-12-22 09:08:01,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:08:01,964 INFO L225 Difference]: With dead ends: 202567 [2020-12-22 09:08:01,965 INFO L226 Difference]: Without dead ends: 139572 [2020-12-22 09:08:02,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:08:02,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139572 states. [2020-12-22 09:08:07,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139572 to 101189. [2020-12-22 09:08:07,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101189 states. [2020-12-22 09:08:07,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101189 states to 101189 states and 164801 transitions. [2020-12-22 09:08:07,828 INFO L78 Accepts]: Start accepts. Automaton has 101189 states and 164801 transitions. Word has length 134 [2020-12-22 09:08:07,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:08:07,828 INFO L481 AbstractCegarLoop]: Abstraction has 101189 states and 164801 transitions. [2020-12-22 09:08:07,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:08:07,828 INFO L276 IsEmpty]: Start isEmpty. Operand 101189 states and 164801 transitions. [2020-12-22 09:08:07,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-22 09:08:07,830 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:07,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:08:07,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:08:07,831 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:07,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:07,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1164383125, now seen corresponding path program 1 times [2020-12-22 09:08:07,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:07,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723899897] [2020-12-22 09:08:07,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:08,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:08:08,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723899897] [2020-12-22 09:08:08,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:08,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:08:08,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725521729] [2020-12-22 09:08:08,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:08:08,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:08,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:08:08,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:08:08,093 INFO L87 Difference]: Start difference. First operand 101189 states and 164801 transitions. Second operand 4 states. [2020-12-22 09:08:18,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:08:18,771 INFO L93 Difference]: Finished difference Result 299589 states and 487846 transitions. [2020-12-22 09:08:18,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:08:18,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-12-22 09:08:18,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:08:19,136 INFO L225 Difference]: With dead ends: 299589 [2020-12-22 09:08:19,136 INFO L226 Difference]: Without dead ends: 198411 [2020-12-22 09:08:19,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:08:19,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198411 states. [2020-12-22 09:08:29,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198411 to 198409. [2020-12-22 09:08:29,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198409 states. [2020-12-22 09:08:30,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198409 states to 198409 states and 321887 transitions. [2020-12-22 09:08:30,787 INFO L78 Accepts]: Start accepts. Automaton has 198409 states and 321887 transitions. Word has length 136 [2020-12-22 09:08:30,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:08:30,788 INFO L481 AbstractCegarLoop]: Abstraction has 198409 states and 321887 transitions. [2020-12-22 09:08:30,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:08:30,788 INFO L276 IsEmpty]: Start isEmpty. Operand 198409 states and 321887 transitions. [2020-12-22 09:08:30,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-12-22 09:08:30,790 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:30,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:08:30,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:08:30,805 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:30,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:30,806 INFO L82 PathProgramCache]: Analyzing trace with hash -512784610, now seen corresponding path program 1 times [2020-12-22 09:08:30,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:30,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751013471] [2020-12-22 09:08:30,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:30,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:08:30,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751013471] [2020-12-22 09:08:30,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:30,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:08:30,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554738013] [2020-12-22 09:08:30,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:08:30,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:30,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:08:30,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:08:30,908 INFO L87 Difference]: Start difference. First operand 198409 states and 321887 transitions. Second operand 3 states. [2020-12-22 09:08:46,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:08:46,377 INFO L93 Difference]: Finished difference Result 477408 states and 777968 transitions. [2020-12-22 09:08:46,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:08:46,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2020-12-22 09:08:46,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:08:46,937 INFO L225 Difference]: With dead ends: 477408 [2020-12-22 09:08:46,937 INFO L226 Difference]: Without dead ends: 279395 [2020-12-22 09:08:47,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:08:47,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279395 states. [2020-12-22 09:09:02,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279395 to 272771. [2020-12-22 09:09:02,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272771 states. [2020-12-22 09:09:03,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272771 states to 272771 states and 440928 transitions. [2020-12-22 09:09:03,605 INFO L78 Accepts]: Start accepts. Automaton has 272771 states and 440928 transitions. Word has length 137 [2020-12-22 09:09:03,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:09:03,606 INFO L481 AbstractCegarLoop]: Abstraction has 272771 states and 440928 transitions. [2020-12-22 09:09:03,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:09:03,606 INFO L276 IsEmpty]: Start isEmpty. Operand 272771 states and 440928 transitions. [2020-12-22 09:09:03,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 09:09:03,609 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:03,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:09:03,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 09:09:03,610 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:03,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:03,620 INFO L82 PathProgramCache]: Analyzing trace with hash -2059883198, now seen corresponding path program 1 times [2020-12-22 09:09:03,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:03,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411063136] [2020-12-22 09:09:03,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:09:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:09:03,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411063136] [2020-12-22 09:09:03,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:09:03,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:09:03,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305899778] [2020-12-22 09:09:03,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:09:03,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:09:03,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:09:03,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:03,682 INFO L87 Difference]: Start difference. First operand 272771 states and 440928 transitions. Second operand 3 states. [2020-12-22 09:09:34,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:34,257 INFO L93 Difference]: Finished difference Result 818276 states and 1322721 transitions. [2020-12-22 09:09:34,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:09:34,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-12-22 09:09:34,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:35,617 INFO L225 Difference]: With dead ends: 818276 [2020-12-22 09:09:35,618 INFO L226 Difference]: Without dead ends: 545526 [2020-12-22 09:09:35,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:36,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545526 states.