/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 10:20:31,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 10:20:31,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 10:20:31,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 10:20:31,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 10:20:31,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 10:20:31,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 10:20:31,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 10:20:31,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 10:20:31,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 10:20:31,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 10:20:31,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 10:20:31,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 10:20:31,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 10:20:31,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 10:20:31,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 10:20:31,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 10:20:31,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 10:20:31,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 10:20:31,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 10:20:31,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 10:20:31,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 10:20:31,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 10:20:31,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 10:20:31,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 10:20:31,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 10:20:31,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 10:20:31,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 10:20:31,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 10:20:31,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 10:20:31,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 10:20:31,776 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 10:20:31,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 10:20:31,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 10:20:31,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 10:20:31,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 10:20:31,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 10:20:31,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 10:20:31,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 10:20:31,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 10:20:31,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 10:20:31,802 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 10:20:31,852 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 10:20:31,852 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 10:20:31,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 10:20:31,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 10:20:31,857 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 10:20:31,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 10:20:31,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 10:20:31,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 10:20:31,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 10:20:31,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 10:20:31,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 10:20:31,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 10:20:31,861 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 10:20:31,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 10:20:31,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 10:20:31,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 10:20:31,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 10:20:31,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:20:31,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 10:20:31,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 10:20:31,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 10:20:31,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 10:20:31,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 10:20:31,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 10:20:31,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 10:20:31,864 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 10:20:32,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 10:20:32,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 10:20:32,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 10:20:32,283 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 10:20:32,285 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 10:20:32,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2020-12-22 10:20:32,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb5a13854/9f8f48990326434d9bc464def86a8f05/FLAGf2ce5e7fd [2020-12-22 10:20:33,418 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 10:20:33,419 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2020-12-22 10:20:33,465 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb5a13854/9f8f48990326434d9bc464def86a8f05/FLAGf2ce5e7fd [2020-12-22 10:20:33,822 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb5a13854/9f8f48990326434d9bc464def86a8f05 [2020-12-22 10:20:33,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 10:20:33,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 10:20:33,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 10:20:33,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 10:20:33,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 10:20:33,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:20:33" (1/1) ... [2020-12-22 10:20:33,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c6374b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:20:33, skipping insertion in model container [2020-12-22 10:20:33,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:20:33" (1/1) ... [2020-12-22 10:20:33,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 10:20:33,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 10:20:34,438 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label05.c[26912,26925] [2020-12-22 10:20:34,515 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label05.c[33605,33618] [2020-12-22 10:20:35,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:20:35,599 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 10:20:35,693 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label05.c[26912,26925] [2020-12-22 10:20:35,710 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label05.c[33605,33618] [2020-12-22 10:20:36,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:20:36,286 INFO L208 MainTranslator]: Completed translation [2020-12-22 10:20:36,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:20:36 WrapperNode [2020-12-22 10:20:36,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 10:20:36,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 10:20:36,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 10:20:36,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 10:20:36,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:20:36" (1/1) ... [2020-12-22 10:20:36,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:20:36" (1/1) ... [2020-12-22 10:20:36,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 10:20:36,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 10:20:36,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 10:20:36,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 10:20:36,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:20:36" (1/1) ... [2020-12-22 10:20:36,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:20:36" (1/1) ... [2020-12-22 10:20:36,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:20:36" (1/1) ... [2020-12-22 10:20:36,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:20:36" (1/1) ... [2020-12-22 10:20:37,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:20:36" (1/1) ... [2020-12-22 10:20:37,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:20:36" (1/1) ... [2020-12-22 10:20:37,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:20:36" (1/1) ... [2020-12-22 10:20:37,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 10:20:37,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 10:20:37,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 10:20:37,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 10:20:37,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:20:36" (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 10:20:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 10:20:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 10:20:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 10:20:37,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 10:20:42,805 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 10:20:42,806 INFO L299 CfgBuilder]: Removed 42 assume(true) statements. [2020-12-22 10:20:42,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:20:42 BoogieIcfgContainer [2020-12-22 10:20:42,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 10:20:42,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 10:20:42,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 10:20:42,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 10:20:42,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:20:33" (1/3) ... [2020-12-22 10:20:42,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63204b25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:20:42, skipping insertion in model container [2020-12-22 10:20:42,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:20:36" (2/3) ... [2020-12-22 10:20:42,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63204b25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:20:42, skipping insertion in model container [2020-12-22 10:20:42,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:20:42" (3/3) ... [2020-12-22 10:20:42,818 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2020-12-22 10:20:42,825 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 10:20:42,830 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 10:20:42,849 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 10:20:42,882 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 10:20:42,882 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 10:20:42,882 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 10:20:42,882 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 10:20:42,883 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 10:20:42,883 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 10:20:42,883 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 10:20:42,883 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 10:20:42,932 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states. [2020-12-22 10:20:42,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 10:20:42,959 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:20:42,960 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] [2020-12-22 10:20:42,960 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:20:42,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:20:42,967 INFO L82 PathProgramCache]: Analyzing trace with hash -805214309, now seen corresponding path program 1 times [2020-12-22 10:20:42,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:20:42,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547170500] [2020-12-22 10:20:42,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:20:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:20:43,233 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 10:20:43,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547170500] [2020-12-22 10:20:43,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:20:43,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:20:43,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610292166] [2020-12-22 10:20:43,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 10:20:43,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:20:43,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 10:20:43,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 10:20:43,263 INFO L87 Difference]: Start difference. First operand 964 states. Second operand 2 states. [2020-12-22 10:20:43,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:20:43,363 INFO L93 Difference]: Finished difference Result 1859 states and 3514 transitions. [2020-12-22 10:20:43,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 10:20:43,365 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-12-22 10:20:43,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:20:43,389 INFO L225 Difference]: With dead ends: 1859 [2020-12-22 10:20:43,389 INFO L226 Difference]: Without dead ends: 898 [2020-12-22 10:20:43,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 10:20:43,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-12-22 10:20:43,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 898. [2020-12-22 10:20:43,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-12-22 10:20:43,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1690 transitions. [2020-12-22 10:20:43,499 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1690 transitions. Word has length 46 [2020-12-22 10:20:43,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:20:43,500 INFO L481 AbstractCegarLoop]: Abstraction has 898 states and 1690 transitions. [2020-12-22 10:20:43,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 10:20:43,500 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1690 transitions. [2020-12-22 10:20:43,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 10:20:43,503 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:20:43,503 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] [2020-12-22 10:20:43,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 10:20:43,504 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:20:43,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:20:43,505 INFO L82 PathProgramCache]: Analyzing trace with hash 2117945689, now seen corresponding path program 1 times [2020-12-22 10:20:43,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:20:43,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501164347] [2020-12-22 10:20:43,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:20:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:20:43,704 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 10:20:43,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501164347] [2020-12-22 10:20:43,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:20:43,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:20:43,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938374602] [2020-12-22 10:20:43,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 10:20:43,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:20:43,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 10:20:43,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:20:43,709 INFO L87 Difference]: Start difference. First operand 898 states and 1690 transitions. Second operand 5 states. [2020-12-22 10:20:43,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:20:43,850 INFO L93 Difference]: Finished difference Result 979 states and 1817 transitions. [2020-12-22 10:20:43,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 10:20:43,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-12-22 10:20:43,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:20:43,856 INFO L225 Difference]: With dead ends: 979 [2020-12-22 10:20:43,856 INFO L226 Difference]: Without dead ends: 898 [2020-12-22 10:20:43,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 10:20:43,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-12-22 10:20:43,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 898. [2020-12-22 10:20:43,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-12-22 10:20:43,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1629 transitions. [2020-12-22 10:20:43,881 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1629 transitions. Word has length 46 [2020-12-22 10:20:43,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:20:43,882 INFO L481 AbstractCegarLoop]: Abstraction has 898 states and 1629 transitions. [2020-12-22 10:20:43,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 10:20:43,882 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1629 transitions. [2020-12-22 10:20:43,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 10:20:43,884 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:20:43,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:20:43,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 10:20:43,885 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:20:43,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:20:43,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1703499387, now seen corresponding path program 1 times [2020-12-22 10:20:43,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:20:43,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065275325] [2020-12-22 10:20:43,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:20:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:20:44,011 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 10:20:44,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065275325] [2020-12-22 10:20:44,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:20:44,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:20:44,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749699546] [2020-12-22 10:20:44,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:20:44,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:20:44,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:20:44,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:20:44,014 INFO L87 Difference]: Start difference. First operand 898 states and 1629 transitions. Second operand 3 states. [2020-12-22 10:20:48,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:20:48,981 INFO L93 Difference]: Finished difference Result 2402 states and 4502 transitions. [2020-12-22 10:20:48,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:20:48,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-12-22 10:20:48,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:20:48,992 INFO L225 Difference]: With dead ends: 2402 [2020-12-22 10:20:48,993 INFO L226 Difference]: Without dead ends: 1649 [2020-12-22 10:20:48,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:20:48,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2020-12-22 10:20:49,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1649. [2020-12-22 10:20:49,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1649 states. [2020-12-22 10:20:49,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2608 transitions. [2020-12-22 10:20:49,045 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2608 transitions. Word has length 60 [2020-12-22 10:20:49,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:20:49,046 INFO L481 AbstractCegarLoop]: Abstraction has 1649 states and 2608 transitions. [2020-12-22 10:20:49,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:20:49,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2608 transitions. [2020-12-22 10:20:49,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:20:49,051 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:20:49,051 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] [2020-12-22 10:20:49,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 10:20:49,052 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:20:49,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:20:49,053 INFO L82 PathProgramCache]: Analyzing trace with hash 211182729, now seen corresponding path program 1 times [2020-12-22 10:20:49,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:20:49,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327913341] [2020-12-22 10:20:49,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:20:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:20:49,264 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 10:20:49,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327913341] [2020-12-22 10:20:49,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:20:49,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:20:49,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417731449] [2020-12-22 10:20:49,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:20:49,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:20:49,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:20:49,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:20:49,268 INFO L87 Difference]: Start difference. First operand 1649 states and 2608 transitions. Second operand 3 states. [2020-12-22 10:20:49,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:20:49,322 INFO L93 Difference]: Finished difference Result 1797 states and 2844 transitions. [2020-12-22 10:20:49,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:20:49,323 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:20:49,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:20:49,335 INFO L225 Difference]: With dead ends: 1797 [2020-12-22 10:20:49,336 INFO L226 Difference]: Without dead ends: 1720 [2020-12-22 10:20:49,337 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 10:20:49,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2020-12-22 10:20:49,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1718. [2020-12-22 10:20:49,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1718 states. [2020-12-22 10:20:49,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2719 transitions. [2020-12-22 10:20:49,384 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2719 transitions. Word has length 106 [2020-12-22 10:20:49,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:20:49,384 INFO L481 AbstractCegarLoop]: Abstraction has 1718 states and 2719 transitions. [2020-12-22 10:20:49,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:20:49,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2719 transitions. [2020-12-22 10:20:49,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:20:49,386 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:20:49,387 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] [2020-12-22 10:20:49,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 10:20:49,387 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:20:49,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:20:49,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1458691583, now seen corresponding path program 1 times [2020-12-22 10:20:49,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:20:49,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738042872] [2020-12-22 10:20:49,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:20:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:20:49,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:20:49,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738042872] [2020-12-22 10:20:49,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:20:49,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:20:49,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412840706] [2020-12-22 10:20:49,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:20:49,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:20:49,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:20:49,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:20:49,498 INFO L87 Difference]: Start difference. First operand 1718 states and 2719 transitions. Second operand 3 states. [2020-12-22 10:20:49,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:20:49,552 INFO L93 Difference]: Finished difference Result 1998 states and 3167 transitions. [2020-12-22 10:20:49,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:20:49,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:20:49,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:20:49,564 INFO L225 Difference]: With dead ends: 1998 [2020-12-22 10:20:49,564 INFO L226 Difference]: Without dead ends: 1852 [2020-12-22 10:20:49,566 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 10:20:49,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2020-12-22 10:20:49,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1850. [2020-12-22 10:20:49,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1850 states. [2020-12-22 10:20:49,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1850 states to 1850 states and 2930 transitions. [2020-12-22 10:20:49,623 INFO L78 Accepts]: Start accepts. Automaton has 1850 states and 2930 transitions. Word has length 106 [2020-12-22 10:20:49,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:20:49,624 INFO L481 AbstractCegarLoop]: Abstraction has 1850 states and 2930 transitions. [2020-12-22 10:20:49,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:20:49,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 2930 transitions. [2020-12-22 10:20:49,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:20:49,626 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:20:49,626 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] [2020-12-22 10:20:49,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 10:20:49,626 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:20:49,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:20:49,627 INFO L82 PathProgramCache]: Analyzing trace with hash 717259381, now seen corresponding path program 1 times [2020-12-22 10:20:49,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:20:49,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105831560] [2020-12-22 10:20:49,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:20:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:20:49,743 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 10:20:49,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105831560] [2020-12-22 10:20:49,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:20:49,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:20:49,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911330932] [2020-12-22 10:20:49,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:20:49,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:20:49,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:20:49,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:20:49,746 INFO L87 Difference]: Start difference. First operand 1850 states and 2930 transitions. Second operand 3 states. [2020-12-22 10:20:49,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:20:49,808 INFO L93 Difference]: Finished difference Result 2382 states and 3780 transitions. [2020-12-22 10:20:49,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:20:49,809 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:20:49,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:20:49,822 INFO L225 Difference]: With dead ends: 2382 [2020-12-22 10:20:49,822 INFO L226 Difference]: Without dead ends: 2104 [2020-12-22 10:20:49,824 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 10:20:49,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2020-12-22 10:20:49,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 2102. [2020-12-22 10:20:49,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2102 states. [2020-12-22 10:20:49,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 3330 transitions. [2020-12-22 10:20:49,884 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 3330 transitions. Word has length 106 [2020-12-22 10:20:49,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:20:49,885 INFO L481 AbstractCegarLoop]: Abstraction has 2102 states and 3330 transitions. [2020-12-22 10:20:49,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:20:49,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 3330 transitions. [2020-12-22 10:20:49,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:20:49,887 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:20:49,887 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] [2020-12-22 10:20:49,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 10:20:49,888 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:20:49,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:20:49,889 INFO L82 PathProgramCache]: Analyzing trace with hash -28323349, now seen corresponding path program 1 times [2020-12-22 10:20:49,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:20:49,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763882248] [2020-12-22 10:20:49,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:20:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:20:50,106 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 10:20:50,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763882248] [2020-12-22 10:20:50,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:20:50,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:20:50,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042948148] [2020-12-22 10:20:50,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:20:50,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:20:50,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:20:50,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:20:50,114 INFO L87 Difference]: Start difference. First operand 2102 states and 3330 transitions. Second operand 3 states. [2020-12-22 10:20:50,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:20:50,181 INFO L93 Difference]: Finished difference Result 3114 states and 4940 transitions. [2020-12-22 10:20:50,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:20:50,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:20:50,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:20:50,196 INFO L225 Difference]: With dead ends: 3114 [2020-12-22 10:20:50,197 INFO L226 Difference]: Without dead ends: 2584 [2020-12-22 10:20:50,202 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 10:20:50,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2020-12-22 10:20:50,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 2582. [2020-12-22 10:20:50,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2582 states. [2020-12-22 10:20:50,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2582 states to 2582 states and 4086 transitions. [2020-12-22 10:20:50,296 INFO L78 Accepts]: Start accepts. Automaton has 2582 states and 4086 transitions. Word has length 106 [2020-12-22 10:20:50,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:20:50,297 INFO L481 AbstractCegarLoop]: Abstraction has 2582 states and 4086 transitions. [2020-12-22 10:20:50,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:20:50,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2582 states and 4086 transitions. [2020-12-22 10:20:50,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:20:50,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:20:50,298 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] [2020-12-22 10:20:50,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 10:20:50,299 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:20:50,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:20:50,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1968354207, now seen corresponding path program 1 times [2020-12-22 10:20:50,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:20:50,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054723074] [2020-12-22 10:20:50,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:20:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:20:50,402 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 10:20:50,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054723074] [2020-12-22 10:20:50,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:20:50,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:20:50,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617223821] [2020-12-22 10:20:50,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:20:50,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:20:50,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:20:50,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:20:50,405 INFO L87 Difference]: Start difference. First operand 2582 states and 4086 transitions. Second operand 3 states. [2020-12-22 10:20:50,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:20:50,494 INFO L93 Difference]: Finished difference Result 4506 states and 7128 transitions. [2020-12-22 10:20:50,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:20:50,495 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:20:50,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:20:50,513 INFO L225 Difference]: With dead ends: 4506 [2020-12-22 10:20:50,513 INFO L226 Difference]: Without dead ends: 3496 [2020-12-22 10:20:50,516 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 10:20:50,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2020-12-22 10:20:50,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 3494. [2020-12-22 10:20:50,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3494 states. [2020-12-22 10:20:50,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3494 states to 3494 states and 5510 transitions. [2020-12-22 10:20:50,636 INFO L78 Accepts]: Start accepts. Automaton has 3494 states and 5510 transitions. Word has length 106 [2020-12-22 10:20:50,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:20:50,637 INFO L481 AbstractCegarLoop]: Abstraction has 3494 states and 5510 transitions. [2020-12-22 10:20:50,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:20:50,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3494 states and 5510 transitions. [2020-12-22 10:20:50,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:20:50,641 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:20:50,642 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] [2020-12-22 10:20:50,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 10:20:50,642 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:20:50,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:20:50,643 INFO L82 PathProgramCache]: Analyzing trace with hash 732328407, now seen corresponding path program 1 times [2020-12-22 10:20:50,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:20:50,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483998593] [2020-12-22 10:20:50,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:20:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:20:50,753 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 10:20:50,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483998593] [2020-12-22 10:20:50,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:20:50,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:20:50,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727147441] [2020-12-22 10:20:50,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:20:50,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:20:50,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:20:50,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:20:50,757 INFO L87 Difference]: Start difference. First operand 3494 states and 5510 transitions. Second operand 3 states. [2020-12-22 10:20:50,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:20:50,899 INFO L93 Difference]: Finished difference Result 7146 states and 11240 transitions. [2020-12-22 10:20:50,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:20:50,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:20:50,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:20:50,926 INFO L225 Difference]: With dead ends: 7146 [2020-12-22 10:20:50,926 INFO L226 Difference]: Without dead ends: 5224 [2020-12-22 10:20:50,931 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 10:20:50,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5224 states. [2020-12-22 10:20:51,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5224 to 5222. [2020-12-22 10:20:51,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5222 states. [2020-12-22 10:20:51,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5222 states to 5222 states and 8182 transitions. [2020-12-22 10:20:51,144 INFO L78 Accepts]: Start accepts. Automaton has 5222 states and 8182 transitions. Word has length 106 [2020-12-22 10:20:51,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:20:51,145 INFO L481 AbstractCegarLoop]: Abstraction has 5222 states and 8182 transitions. [2020-12-22 10:20:51,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:20:51,145 INFO L276 IsEmpty]: Start isEmpty. Operand 5222 states and 8182 transitions. [2020-12-22 10:20:51,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:20:51,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:20:51,147 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] [2020-12-22 10:20:51,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 10:20:51,147 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:20:51,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:20:51,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1070121549, now seen corresponding path program 1 times [2020-12-22 10:20:51,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:20:51,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000548759] [2020-12-22 10:20:51,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:20:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:20:51,237 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 10:20:51,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000548759] [2020-12-22 10:20:51,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:20:51,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:20:51,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424770707] [2020-12-22 10:20:51,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:20:51,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:20:51,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:20:51,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:20:51,242 INFO L87 Difference]: Start difference. First operand 5222 states and 8182 transitions. Second operand 3 states. [2020-12-22 10:20:51,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:20:51,535 INFO L93 Difference]: Finished difference Result 12138 states and 18936 transitions. [2020-12-22 10:20:51,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:20:51,541 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:20:51,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:20:51,597 INFO L225 Difference]: With dead ends: 12138 [2020-12-22 10:20:51,597 INFO L226 Difference]: Without dead ends: 8488 [2020-12-22 10:20:51,605 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 10:20:51,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8488 states. [2020-12-22 10:20:51,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8488 to 8486. [2020-12-22 10:20:51,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8486 states. [2020-12-22 10:20:52,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8486 states to 8486 states and 13174 transitions. [2020-12-22 10:20:52,030 INFO L78 Accepts]: Start accepts. Automaton has 8486 states and 13174 transitions. Word has length 106 [2020-12-22 10:20:52,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:20:52,030 INFO L481 AbstractCegarLoop]: Abstraction has 8486 states and 13174 transitions. [2020-12-22 10:20:52,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:20:52,030 INFO L276 IsEmpty]: Start isEmpty. Operand 8486 states and 13174 transitions. [2020-12-22 10:20:52,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:20:52,032 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:20:52,032 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] [2020-12-22 10:20:52,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 10:20:52,033 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:20:52,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:20:52,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1478760321, now seen corresponding path program 1 times [2020-12-22 10:20:52,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:20:52,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482990452] [2020-12-22 10:20:52,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:20:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:20:52,201 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 10:20:52,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482990452] [2020-12-22 10:20:52,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:20:52,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:20:52,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891509091] [2020-12-22 10:20:52,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:20:52,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:20:52,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:20:52,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:20:52,204 INFO L87 Difference]: Start difference. First operand 8486 states and 13174 transitions. Second operand 10 states. [2020-12-22 10:20:56,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:20:56,080 INFO L93 Difference]: Finished difference Result 119110 states and 184198 transitions. [2020-12-22 10:20:56,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 10:20:56,081 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 106 [2020-12-22 10:20:56,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:20:56,696 INFO L225 Difference]: With dead ends: 119110 [2020-12-22 10:20:56,697 INFO L226 Difference]: Without dead ends: 112196 [2020-12-22 10:20:56,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-12-22 10:20:56,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112196 states. [2020-12-22 10:20:59,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112196 to 15398. [2020-12-22 10:20:59,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15398 states. [2020-12-22 10:20:59,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15398 states to 15398 states and 23606 transitions. [2020-12-22 10:20:59,181 INFO L78 Accepts]: Start accepts. Automaton has 15398 states and 23606 transitions. Word has length 106 [2020-12-22 10:20:59,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:20:59,181 INFO L481 AbstractCegarLoop]: Abstraction has 15398 states and 23606 transitions. [2020-12-22 10:20:59,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:20:59,182 INFO L276 IsEmpty]: Start isEmpty. Operand 15398 states and 23606 transitions. [2020-12-22 10:20:59,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 10:20:59,183 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:20:59,183 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] [2020-12-22 10:20:59,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 10:20:59,185 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:20:59,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:20:59,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1961193007, now seen corresponding path program 1 times [2020-12-22 10:20:59,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:20:59,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507079964] [2020-12-22 10:20:59,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:20:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:20:59,300 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 10:20:59,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507079964] [2020-12-22 10:20:59,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:20:59,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:20:59,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191647876] [2020-12-22 10:20:59,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:20:59,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:20:59,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:20:59,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:20:59,307 INFO L87 Difference]: Start difference. First operand 15398 states and 23606 transitions. Second operand 3 states. [2020-12-22 10:21:00,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:21:00,863 INFO L93 Difference]: Finished difference Result 41642 states and 63416 transitions. [2020-12-22 10:21:00,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:21:00,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-22 10:21:00,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:21:00,927 INFO L225 Difference]: With dead ends: 41642 [2020-12-22 10:21:00,927 INFO L226 Difference]: Without dead ends: 27816 [2020-12-22 10:21:00,945 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 10:21:00,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27816 states. [2020-12-22 10:21:02,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27816 to 27558. [2020-12-22 10:21:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27558 states. [2020-12-22 10:21:02,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27558 states to 27558 states and 41398 transitions. [2020-12-22 10:21:02,911 INFO L78 Accepts]: Start accepts. Automaton has 27558 states and 41398 transitions. Word has length 108 [2020-12-22 10:21:02,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:21:02,911 INFO L481 AbstractCegarLoop]: Abstraction has 27558 states and 41398 transitions. [2020-12-22 10:21:02,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:21:02,911 INFO L276 IsEmpty]: Start isEmpty. Operand 27558 states and 41398 transitions. [2020-12-22 10:21:02,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 10:21:02,913 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:21:02,913 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] [2020-12-22 10:21:02,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 10:21:02,914 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:21:02,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:21:02,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1894699495, now seen corresponding path program 1 times [2020-12-22 10:21:02,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:21:02,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899872216] [2020-12-22 10:21:02,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:21:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:21:03,391 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 10:21:03,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899872216] [2020-12-22 10:21:03,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:21:03,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:21:03,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474388483] [2020-12-22 10:21:03,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:21:03,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:21:03,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:21:03,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:21:03,399 INFO L87 Difference]: Start difference. First operand 27558 states and 41398 transitions. Second operand 10 states. [2020-12-22 10:21:05,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:21:05,072 INFO L93 Difference]: Finished difference Result 53546 states and 80312 transitions. [2020-12-22 10:21:05,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:21:05,073 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2020-12-22 10:21:05,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:21:05,115 INFO L225 Difference]: With dead ends: 53546 [2020-12-22 10:21:05,115 INFO L226 Difference]: Without dead ends: 27560 [2020-12-22 10:21:05,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-12-22 10:21:05,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27560 states. [2020-12-22 10:21:06,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27560 to 27558. [2020-12-22 10:21:06,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27558 states. [2020-12-22 10:21:06,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27558 states to 27558 states and 41142 transitions. [2020-12-22 10:21:06,729 INFO L78 Accepts]: Start accepts. Automaton has 27558 states and 41142 transitions. Word has length 108 [2020-12-22 10:21:06,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:21:06,729 INFO L481 AbstractCegarLoop]: Abstraction has 27558 states and 41142 transitions. [2020-12-22 10:21:06,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:21:06,730 INFO L276 IsEmpty]: Start isEmpty. Operand 27558 states and 41142 transitions. [2020-12-22 10:21:06,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 10:21:06,731 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:21:06,731 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] [2020-12-22 10:21:06,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 10:21:06,732 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:21:06,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:21:06,732 INFO L82 PathProgramCache]: Analyzing trace with hash 979135041, now seen corresponding path program 1 times [2020-12-22 10:21:06,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:21:06,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230942503] [2020-12-22 10:21:06,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:21:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:21:07,008 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 10:21:07,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230942503] [2020-12-22 10:21:07,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:21:07,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:21:07,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930440592] [2020-12-22 10:21:07,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 10:21:07,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:21:07,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 10:21:07,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 10:21:07,010 INFO L87 Difference]: Start difference. First operand 27558 states and 41142 transitions. Second operand 6 states. [2020-12-22 10:21:08,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:21:08,518 INFO L93 Difference]: Finished difference Result 53544 states and 79799 transitions. [2020-12-22 10:21:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 10:21:08,519 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2020-12-22 10:21:08,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:21:08,552 INFO L225 Difference]: With dead ends: 53544 [2020-12-22 10:21:08,552 INFO L226 Difference]: Without dead ends: 27558 [2020-12-22 10:21:08,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:21:08,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27558 states. [2020-12-22 10:21:10,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27558 to 27558. [2020-12-22 10:21:10,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27558 states. [2020-12-22 10:21:10,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27558 states to 27558 states and 40886 transitions. [2020-12-22 10:21:10,205 INFO L78 Accepts]: Start accepts. Automaton has 27558 states and 40886 transitions. Word has length 109 [2020-12-22 10:21:10,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:21:10,206 INFO L481 AbstractCegarLoop]: Abstraction has 27558 states and 40886 transitions. [2020-12-22 10:21:10,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 10:21:10,206 INFO L276 IsEmpty]: Start isEmpty. Operand 27558 states and 40886 transitions. [2020-12-22 10:21:10,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 10:21:10,207 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:21:10,207 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] [2020-12-22 10:21:10,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 10:21:10,207 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:21:10,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:21:10,208 INFO L82 PathProgramCache]: Analyzing trace with hash 278070463, now seen corresponding path program 1 times [2020-12-22 10:21:10,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:21:10,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073138309] [2020-12-22 10:21:10,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:21:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:21:10,343 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 10:21:10,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073138309] [2020-12-22 10:21:10,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:21:10,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:21:10,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551254086] [2020-12-22 10:21:10,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:21:10,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:21:10,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:21:10,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:21:10,345 INFO L87 Difference]: Start difference. First operand 27558 states and 40886 transitions. Second operand 8 states. [2020-12-22 10:21:13,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:21:13,491 INFO L93 Difference]: Finished difference Result 46928 states and 69099 transitions. [2020-12-22 10:21:13,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:21:13,491 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2020-12-22 10:21:13,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:21:13,533 INFO L225 Difference]: With dead ends: 46928 [2020-12-22 10:21:13,533 INFO L226 Difference]: Without dead ends: 46926 [2020-12-22 10:21:13,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:21:13,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46926 states. [2020-12-22 10:21:15,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46926 to 28326. [2020-12-22 10:21:15,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28326 states. [2020-12-22 10:21:15,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28326 states to 28326 states and 41526 transitions. [2020-12-22 10:21:15,438 INFO L78 Accepts]: Start accepts. Automaton has 28326 states and 41526 transitions. Word has length 109 [2020-12-22 10:21:15,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:21:15,439 INFO L481 AbstractCegarLoop]: Abstraction has 28326 states and 41526 transitions. [2020-12-22 10:21:15,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:21:15,439 INFO L276 IsEmpty]: Start isEmpty. Operand 28326 states and 41526 transitions. [2020-12-22 10:21:15,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 10:21:15,440 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:21:15,440 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] [2020-12-22 10:21:15,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 10:21:15,441 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:21:15,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:21:15,441 INFO L82 PathProgramCache]: Analyzing trace with hash 171324818, now seen corresponding path program 1 times [2020-12-22 10:21:15,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:21:15,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962269990] [2020-12-22 10:21:15,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:21:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:21:15,527 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 10:21:15,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962269990] [2020-12-22 10:21:15,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:21:15,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:21:15,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297272293] [2020-12-22 10:21:15,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:21:15,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:21:15,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:21:15,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:21:15,532 INFO L87 Difference]: Start difference. First operand 28326 states and 41526 transitions. Second operand 3 states. [2020-12-22 10:21:17,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:21:17,948 INFO L93 Difference]: Finished difference Result 55469 states and 81468 transitions. [2020-12-22 10:21:17,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:21:17,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2020-12-22 10:21:17,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:21:17,989 INFO L225 Difference]: With dead ends: 55469 [2020-12-22 10:21:17,989 INFO L226 Difference]: Without dead ends: 40874 [2020-12-22 10:21:17,998 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 10:21:18,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40874 states. [2020-12-22 10:21:20,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40874 to 40872. [2020-12-22 10:21:20,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40872 states. [2020-12-22 10:21:20,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40872 states to 40872 states and 59576 transitions. [2020-12-22 10:21:20,638 INFO L78 Accepts]: Start accepts. Automaton has 40872 states and 59576 transitions. Word has length 110 [2020-12-22 10:21:20,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:21:20,638 INFO L481 AbstractCegarLoop]: Abstraction has 40872 states and 59576 transitions. [2020-12-22 10:21:20,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:21:20,639 INFO L276 IsEmpty]: Start isEmpty. Operand 40872 states and 59576 transitions. [2020-12-22 10:21:20,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-22 10:21:20,644 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:21:20,645 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:21:20,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 10:21:20,645 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:21:20,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:21:20,646 INFO L82 PathProgramCache]: Analyzing trace with hash 163658333, now seen corresponding path program 1 times [2020-12-22 10:21:20,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:21:20,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824671360] [2020-12-22 10:21:20,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:21:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:21:20,746 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:21:20,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824671360] [2020-12-22 10:21:20,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:21:20,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:21:20,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472897521] [2020-12-22 10:21:20,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:21:20,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:21:20,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:21:20,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:21:20,748 INFO L87 Difference]: Start difference. First operand 40872 states and 59576 transitions. Second operand 3 states. [2020-12-22 10:21:28,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:21:28,082 INFO L93 Difference]: Finished difference Result 43880 states and 64408 transitions. [2020-12-22 10:21:28,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:21:28,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2020-12-22 10:21:28,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:21:28,124 INFO L225 Difference]: With dead ends: 43880 [2020-12-22 10:21:28,124 INFO L226 Difference]: Without dead ends: 42376 [2020-12-22 10:21:28,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:21:28,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42376 states. [2020-12-22 10:21:30,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42376 to 42374. [2020-12-22 10:21:30,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42374 states. [2020-12-22 10:21:30,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42374 states to 42374 states and 61547 transitions. [2020-12-22 10:21:30,698 INFO L78 Accepts]: Start accepts. Automaton has 42374 states and 61547 transitions. Word has length 135 [2020-12-22 10:21:30,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:21:30,699 INFO L481 AbstractCegarLoop]: Abstraction has 42374 states and 61547 transitions. [2020-12-22 10:21:30,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:21:30,699 INFO L276 IsEmpty]: Start isEmpty. Operand 42374 states and 61547 transitions. [2020-12-22 10:21:30,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 10:21:30,719 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:21:30,719 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:30,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 10:21:30,719 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:21:30,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:21:30,720 INFO L82 PathProgramCache]: Analyzing trace with hash 45078639, now seen corresponding path program 1 times [2020-12-22 10:21:30,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:21:30,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983799200] [2020-12-22 10:21:30,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:21:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:21:30,930 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 10:21:30,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983799200] [2020-12-22 10:21:30,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:21:30,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:21:30,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291548444] [2020-12-22 10:21:30,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:21:30,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:21:30,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:21:30,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:21:30,933 INFO L87 Difference]: Start difference. First operand 42374 states and 61547 transitions. Second operand 10 states. [2020-12-22 10:21:49,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:21:49,709 INFO L93 Difference]: Finished difference Result 364312 states and 528884 transitions. [2020-12-22 10:21:49,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:21:49,709 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 148 [2020-12-22 10:21:49,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:21:50,232 INFO L225 Difference]: With dead ends: 364312 [2020-12-22 10:21:50,232 INFO L226 Difference]: Without dead ends: 325014 [2020-12-22 10:21:50,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-12-22 10:21:50,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325014 states. [2020-12-22 10:21:57,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325014 to 81670. [2020-12-22 10:21:57,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81670 states. [2020-12-22 10:21:58,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81670 states to 81670 states and 118251 transitions. [2020-12-22 10:21:58,000 INFO L78 Accepts]: Start accepts. Automaton has 81670 states and 118251 transitions. Word has length 148 [2020-12-22 10:21:58,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:21:58,001 INFO L481 AbstractCegarLoop]: Abstraction has 81670 states and 118251 transitions. [2020-12-22 10:21:58,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:21:58,001 INFO L276 IsEmpty]: Start isEmpty. Operand 81670 states and 118251 transitions. [2020-12-22 10:21:58,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 10:21:58,023 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:21:58,024 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:58,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 10:21:58,024 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:21:58,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:21:58,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1723704177, now seen corresponding path program 1 times [2020-12-22 10:21:58,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:21:58,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445798297] [2020-12-22 10:21:58,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:21:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:21:58,210 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-22 10:21:58,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445798297] [2020-12-22 10:21:58,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:21:58,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:21:58,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188192088] [2020-12-22 10:21:58,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:21:58,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:21:58,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:21:58,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:21:58,212 INFO L87 Difference]: Start difference. First operand 81670 states and 118251 transitions. Second operand 10 states. [2020-12-22 10:22:22,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:22:22,014 INFO L93 Difference]: Finished difference Result 403608 states and 585588 transitions. [2020-12-22 10:22:22,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:22:22,015 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 148 [2020-12-22 10:22:22,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:22:22,794 INFO L225 Difference]: With dead ends: 403608 [2020-12-22 10:22:22,794 INFO L226 Difference]: Without dead ends: 364310 [2020-12-22 10:22:22,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-12-22 10:22:23,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364310 states. [2020-12-22 10:22:35,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364310 to 140678. [2020-12-22 10:22:35,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140678 states. [2020-12-22 10:22:35,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140678 states to 140678 states and 202987 transitions. [2020-12-22 10:22:35,476 INFO L78 Accepts]: Start accepts. Automaton has 140678 states and 202987 transitions. Word has length 148 [2020-12-22 10:22:35,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:22:35,476 INFO L481 AbstractCegarLoop]: Abstraction has 140678 states and 202987 transitions. [2020-12-22 10:22:35,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:22:35,477 INFO L276 IsEmpty]: Start isEmpty. Operand 140678 states and 202987 transitions. [2020-12-22 10:22:35,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 10:22:35,512 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:22:35,512 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:22:35,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 10:22:35,513 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:22:35,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:22:35,514 INFO L82 PathProgramCache]: Analyzing trace with hash -592064337, now seen corresponding path program 1 times [2020-12-22 10:22:35,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:22:35,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013243472] [2020-12-22 10:22:35,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:22:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:22:35,730 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 10:22:35,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013243472] [2020-12-22 10:22:35,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:22:35,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:22:35,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216358583] [2020-12-22 10:22:35,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:22:35,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:22:35,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:22:35,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:22:35,733 INFO L87 Difference]: Start difference. First operand 140678 states and 202987 transitions. Second operand 10 states. [2020-12-22 10:23:04,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:23:04,770 INFO L93 Difference]: Finished difference Result 442904 states and 642292 transitions. [2020-12-22 10:23:04,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:23:04,771 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 148 [2020-12-22 10:23:04,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:23:05,604 INFO L225 Difference]: With dead ends: 442904 [2020-12-22 10:23:05,604 INFO L226 Difference]: Without dead ends: 403606 [2020-12-22 10:23:05,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-12-22 10:23:05,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403606 states. [2020-12-22 10:23:21,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403606 to 179974. [2020-12-22 10:23:21,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179974 states. [2020-12-22 10:23:22,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179974 states to 179974 states and 259691 transitions. [2020-12-22 10:23:22,182 INFO L78 Accepts]: Start accepts. Automaton has 179974 states and 259691 transitions. Word has length 148 [2020-12-22 10:23:22,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:23:22,182 INFO L481 AbstractCegarLoop]: Abstraction has 179974 states and 259691 transitions. [2020-12-22 10:23:22,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:23:22,182 INFO L276 IsEmpty]: Start isEmpty. Operand 179974 states and 259691 transitions. [2020-12-22 10:23:22,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 10:23:22,210 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:23:22,210 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:23:22,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 10:23:22,211 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:23:22,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:23:22,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1827523377, now seen corresponding path program 1 times [2020-12-22 10:23:22,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:23:22,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031358908] [2020-12-22 10:23:22,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:23:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat