/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_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 10:26:47,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 10:26:47,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 10:26:47,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 10:26:47,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 10:26:47,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 10:26:47,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 10:26:47,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 10:26:47,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 10:26:47,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 10:26:47,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 10:26:47,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 10:26:47,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 10:26:47,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 10:26:47,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 10:26:47,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 10:26:47,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 10:26:47,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 10:26:47,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 10:26:47,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 10:26:47,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 10:26:47,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 10:26:47,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 10:26:47,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 10:26:47,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 10:26:47,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 10:26:47,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 10:26:47,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 10:26:47,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 10:26:47,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 10:26:47,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 10:26:47,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 10:26:47,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 10:26:47,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 10:26:47,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 10:26:47,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 10:26:47,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 10:26:47,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 10:26:47,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 10:26:47,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 10:26:47,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 10:26:47,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 10:26:47,967 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 10:26:47,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 10:26:47,971 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 10:26:47,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 10:26:47,971 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 10:26:47,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 10:26:47,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 10:26:47,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 10:26:47,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 10:26:47,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 10:26:47,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 10:26:47,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 10:26:47,974 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 10:26:47,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 10:26:47,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 10:26:47,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 10:26:47,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 10:26:47,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:26:47,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 10:26:47,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 10:26:47,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 10:26:47,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 10:26:47,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 10:26:47,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 10:26:47,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 10:26:47,978 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 10:26:48,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 10:26:48,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 10:26:48,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 10:26:48,415 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 10:26:48,416 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 10:26:48,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c [2020-12-22 10:26:48,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7e48d58f/11ca4c3eaaac4f5eb634538aeee60e52/FLAGad576f27b [2020-12-22 10:26:49,504 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 10:26:49,504 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c [2020-12-22 10:26:49,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7e48d58f/11ca4c3eaaac4f5eb634538aeee60e52/FLAGad576f27b [2020-12-22 10:26:49,975 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7e48d58f/11ca4c3eaaac4f5eb634538aeee60e52 [2020-12-22 10:26:49,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 10:26:49,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 10:26:49,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 10:26:49,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 10:26:49,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 10:26:49,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:26:49" (1/1) ... [2020-12-22 10:26:49,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2622d728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:49, skipping insertion in model container [2020-12-22 10:26:49,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:26:49" (1/1) ... [2020-12-22 10:26:50,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 10:26:50,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 10:26:50,689 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_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[26949,26962] [2020-12-22 10:26:50,797 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_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[33642,33655] [2020-12-22 10:26:51,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:26:51,744 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 10:26:51,791 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_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[26949,26962] [2020-12-22 10:26:51,803 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_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[33642,33655] [2020-12-22 10:26:52,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:26:52,422 INFO L208 MainTranslator]: Completed translation [2020-12-22 10:26:52,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:52 WrapperNode [2020-12-22 10:26:52,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 10:26:52,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 10:26:52,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 10:26:52,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 10:26:52,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:52" (1/1) ... [2020-12-22 10:26:52,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:52" (1/1) ... [2020-12-22 10:26:52,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 10:26:52,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 10:26:52,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 10:26:52,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 10:26:52,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:52" (1/1) ... [2020-12-22 10:26:52,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:52" (1/1) ... [2020-12-22 10:26:52,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:52" (1/1) ... [2020-12-22 10:26:52,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:52" (1/1) ... [2020-12-22 10:26:53,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:52" (1/1) ... [2020-12-22 10:26:53,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:52" (1/1) ... [2020-12-22 10:26:53,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:52" (1/1) ... [2020-12-22 10:26:53,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 10:26:53,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 10:26:53,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 10:26:53,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 10:26:53,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:52" (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 10:26:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 10:26:53,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 10:26:53,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 10:26:53,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 10:26:59,584 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 10:26:59,584 INFO L299 CfgBuilder]: Removed 42 assume(true) statements. [2020-12-22 10:26:59,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:26:59 BoogieIcfgContainer [2020-12-22 10:26:59,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 10:26:59,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 10:26:59,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 10:26:59,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 10:26:59,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:26:49" (1/3) ... [2020-12-22 10:26:59,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2070b09f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:26:59, skipping insertion in model container [2020-12-22 10:26:59,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:26:52" (2/3) ... [2020-12-22 10:26:59,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2070b09f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:26:59, skipping insertion in model container [2020-12-22 10:26:59,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:26:59" (3/3) ... [2020-12-22 10:26:59,598 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c [2020-12-22 10:26:59,606 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 10:26:59,613 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 10:26:59,633 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 10:26:59,667 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 10:26:59,668 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 10:26:59,668 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 10:26:59,668 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 10:26:59,668 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 10:26:59,668 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 10:26:59,668 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 10:26:59,669 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 10:26:59,706 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states. [2020-12-22 10:26:59,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 10:26:59,718 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:26:59,719 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 10:26:59,719 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:26:59,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:26:59,726 INFO L82 PathProgramCache]: Analyzing trace with hash -2107180874, now seen corresponding path program 1 times [2020-12-22 10:26:59,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:26:59,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206404650] [2020-12-22 10:26:59,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:26:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:00,048 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 10:27:00,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206404650] [2020-12-22 10:27:00,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:00,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:27:00,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830475637] [2020-12-22 10:27:00,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 10:27:00,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:00,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 10:27:00,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 10:27:00,074 INFO L87 Difference]: Start difference. First operand 962 states. Second operand 2 states. [2020-12-22 10:27:00,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:00,157 INFO L93 Difference]: Finished difference Result 1855 states and 3508 transitions. [2020-12-22 10:27:00,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 10:27:00,158 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-12-22 10:27:00,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:00,188 INFO L225 Difference]: With dead ends: 1855 [2020-12-22 10:27:00,188 INFO L226 Difference]: Without dead ends: 896 [2020-12-22 10:27:00,200 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 10:27:00,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-12-22 10:27:00,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 896. [2020-12-22 10:27:00,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2020-12-22 10:27:00,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1687 transitions. [2020-12-22 10:27:00,294 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1687 transitions. Word has length 46 [2020-12-22 10:27:00,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:00,294 INFO L481 AbstractCegarLoop]: Abstraction has 896 states and 1687 transitions. [2020-12-22 10:27:00,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 10:27:00,294 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1687 transitions. [2020-12-22 10:27:00,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 10:27:00,297 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:00,297 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 10:27:00,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 10:27:00,298 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:00,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:00,299 INFO L82 PathProgramCache]: Analyzing trace with hash 815979124, now seen corresponding path program 1 times [2020-12-22 10:27:00,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:00,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361933142] [2020-12-22 10:27:00,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:00,503 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 10:27:00,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361933142] [2020-12-22 10:27:00,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:00,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:27:00,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130399502] [2020-12-22 10:27:00,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 10:27:00,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:00,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 10:27:00,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:27:00,509 INFO L87 Difference]: Start difference. First operand 896 states and 1687 transitions. Second operand 5 states. [2020-12-22 10:27:00,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:00,738 INFO L93 Difference]: Finished difference Result 975 states and 1811 transitions. [2020-12-22 10:27:00,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 10:27:00,739 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-12-22 10:27:00,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:00,746 INFO L225 Difference]: With dead ends: 975 [2020-12-22 10:27:00,746 INFO L226 Difference]: Without dead ends: 896 [2020-12-22 10:27:00,747 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 10:27:00,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-12-22 10:27:00,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 896. [2020-12-22 10:27:00,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2020-12-22 10:27:00,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1626 transitions. [2020-12-22 10:27:00,772 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1626 transitions. Word has length 46 [2020-12-22 10:27:00,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:00,773 INFO L481 AbstractCegarLoop]: Abstraction has 896 states and 1626 transitions. [2020-12-22 10:27:00,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 10:27:00,773 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1626 transitions. [2020-12-22 10:27:00,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 10:27:00,775 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:00,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:27:00,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 10:27:00,776 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:00,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:00,777 INFO L82 PathProgramCache]: Analyzing trace with hash -194093019, now seen corresponding path program 1 times [2020-12-22 10:27:00,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:00,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146527296] [2020-12-22 10:27:00,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:00,977 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 10:27:00,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146527296] [2020-12-22 10:27:00,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:00,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:27:00,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872853908] [2020-12-22 10:27:00,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 10:27:00,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:00,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 10:27:00,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:27:00,981 INFO L87 Difference]: Start difference. First operand 896 states and 1626 transitions. Second operand 4 states. [2020-12-22 10:27:12,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:12,031 INFO L93 Difference]: Finished difference Result 3151 states and 5935 transitions. [2020-12-22 10:27:12,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 10:27:12,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-12-22 10:27:12,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:12,055 INFO L225 Difference]: With dead ends: 3151 [2020-12-22 10:27:12,055 INFO L226 Difference]: Without dead ends: 2398 [2020-12-22 10:27:12,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:27:12,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2020-12-22 10:27:12,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2398. [2020-12-22 10:27:12,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2398 states. [2020-12-22 10:27:12,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 3752 transitions. [2020-12-22 10:27:12,149 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 3752 transitions. Word has length 60 [2020-12-22 10:27:12,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:12,150 INFO L481 AbstractCegarLoop]: Abstraction has 2398 states and 3752 transitions. [2020-12-22 10:27:12,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 10:27:12,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 3752 transitions. [2020-12-22 10:27:12,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:27:12,153 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:12,153 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 10:27:12,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 10:27:12,154 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:12,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:12,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1090783836, now seen corresponding path program 1 times [2020-12-22 10:27:12,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:12,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501142248] [2020-12-22 10:27:12,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:12,345 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 10:27:12,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501142248] [2020-12-22 10:27:12,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:12,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:27:12,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873305383] [2020-12-22 10:27:12,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:27:12,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:12,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:27:12,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:12,353 INFO L87 Difference]: Start difference. First operand 2398 states and 3752 transitions. Second operand 3 states. [2020-12-22 10:27:12,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:12,405 INFO L93 Difference]: Finished difference Result 2542 states and 3982 transitions. [2020-12-22 10:27:12,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:27:12,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:27:12,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:12,420 INFO L225 Difference]: With dead ends: 2542 [2020-12-22 10:27:12,420 INFO L226 Difference]: Without dead ends: 2467 [2020-12-22 10:27:12,421 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 10:27:12,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2020-12-22 10:27:12,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2465. [2020-12-22 10:27:12,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2465 states. [2020-12-22 10:27:12,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3860 transitions. [2020-12-22 10:27:12,535 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3860 transitions. Word has length 106 [2020-12-22 10:27:12,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:12,536 INFO L481 AbstractCegarLoop]: Abstraction has 2465 states and 3860 transitions. [2020-12-22 10:27:12,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:27:12,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3860 transitions. [2020-12-22 10:27:12,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:27:12,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:12,539 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 10:27:12,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 10:27:12,539 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:12,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:12,540 INFO L82 PathProgramCache]: Analyzing trace with hash 326222874, now seen corresponding path program 1 times [2020-12-22 10:27:12,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:12,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783570951] [2020-12-22 10:27:12,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:12,691 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 10:27:12,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783570951] [2020-12-22 10:27:12,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:12,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:27:12,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52162215] [2020-12-22 10:27:12,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:27:12,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:12,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:27:12,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:12,694 INFO L87 Difference]: Start difference. First operand 2465 states and 3860 transitions. Second operand 3 states. [2020-12-22 10:27:12,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:12,755 INFO L93 Difference]: Finished difference Result 2737 states and 4296 transitions. [2020-12-22 10:27:12,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:27:12,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:27:12,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:12,772 INFO L225 Difference]: With dead ends: 2737 [2020-12-22 10:27:12,772 INFO L226 Difference]: Without dead ends: 2595 [2020-12-22 10:27:12,774 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 10:27:12,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2020-12-22 10:27:12,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 2593. [2020-12-22 10:27:12,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2593 states. [2020-12-22 10:27:12,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2593 states to 2593 states and 4065 transitions. [2020-12-22 10:27:12,849 INFO L78 Accepts]: Start accepts. Automaton has 2593 states and 4065 transitions. Word has length 106 [2020-12-22 10:27:12,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:12,850 INFO L481 AbstractCegarLoop]: Abstraction has 2593 states and 4065 transitions. [2020-12-22 10:27:12,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:27:12,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2593 states and 4065 transitions. [2020-12-22 10:27:12,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:27:12,858 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:12,859 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 10:27:12,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 10:27:12,859 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:12,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:12,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1573731728, now seen corresponding path program 1 times [2020-12-22 10:27:12,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:12,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108429158] [2020-12-22 10:27:12,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:12,994 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 10:27:12,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108429158] [2020-12-22 10:27:12,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:12,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:27:12,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762968132] [2020-12-22 10:27:12,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:27:12,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:12,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:27:12,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:12,998 INFO L87 Difference]: Start difference. First operand 2593 states and 4065 transitions. Second operand 3 states. [2020-12-22 10:27:13,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:13,071 INFO L93 Difference]: Finished difference Result 3109 states and 4891 transitions. [2020-12-22 10:27:13,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:27:13,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:27:13,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:13,092 INFO L225 Difference]: With dead ends: 3109 [2020-12-22 10:27:13,092 INFO L226 Difference]: Without dead ends: 2839 [2020-12-22 10:27:13,094 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 10:27:13,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2839 states. [2020-12-22 10:27:13,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2839 to 2837. [2020-12-22 10:27:13,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2837 states. [2020-12-22 10:27:13,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2837 states to 2837 states and 4453 transitions. [2020-12-22 10:27:13,179 INFO L78 Accepts]: Start accepts. Automaton has 2837 states and 4453 transitions. Word has length 106 [2020-12-22 10:27:13,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:13,181 INFO L481 AbstractCegarLoop]: Abstraction has 2837 states and 4453 transitions. [2020-12-22 10:27:13,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:27:13,181 INFO L276 IsEmpty]: Start isEmpty. Operand 2837 states and 4453 transitions. [2020-12-22 10:27:13,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:27:13,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:13,183 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] [2020-12-22 10:27:13,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 10:27:13,184 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:13,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:13,188 INFO L82 PathProgramCache]: Analyzing trace with hash 832299526, now seen corresponding path program 1 times [2020-12-22 10:27:13,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:13,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435573699] [2020-12-22 10:27:13,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:13,309 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 10:27:13,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435573699] [2020-12-22 10:27:13,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:13,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:27:13,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115853764] [2020-12-22 10:27:13,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:27:13,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:13,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:27:13,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:13,322 INFO L87 Difference]: Start difference. First operand 2837 states and 4453 transitions. Second operand 3 states. [2020-12-22 10:27:13,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:13,395 INFO L93 Difference]: Finished difference Result 3817 states and 6015 transitions. [2020-12-22 10:27:13,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:27:13,396 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:27:13,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:13,414 INFO L225 Difference]: With dead ends: 3817 [2020-12-22 10:27:13,414 INFO L226 Difference]: Without dead ends: 3303 [2020-12-22 10:27:13,419 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 10:27:13,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3303 states. [2020-12-22 10:27:13,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3303 to 3301. [2020-12-22 10:27:13,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3301 states. [2020-12-22 10:27:13,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3301 states to 3301 states and 5185 transitions. [2020-12-22 10:27:13,522 INFO L78 Accepts]: Start accepts. Automaton has 3301 states and 5185 transitions. Word has length 106 [2020-12-22 10:27:13,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:13,522 INFO L481 AbstractCegarLoop]: Abstraction has 3301 states and 5185 transitions. [2020-12-22 10:27:13,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:27:13,522 INFO L276 IsEmpty]: Start isEmpty. Operand 3301 states and 5185 transitions. [2020-12-22 10:27:13,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:27:13,524 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:13,524 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 10:27:13,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 10:27:13,524 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:13,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:13,525 INFO L82 PathProgramCache]: Analyzing trace with hash 2050284924, now seen corresponding path program 1 times [2020-12-22 10:27:13,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:13,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965876047] [2020-12-22 10:27:13,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:13,720 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 10:27:13,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965876047] [2020-12-22 10:27:13,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:13,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:27:13,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427124167] [2020-12-22 10:27:13,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:27:13,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:13,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:27:13,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:27:13,723 INFO L87 Difference]: Start difference. First operand 3301 states and 5185 transitions. Second operand 10 states. [2020-12-22 10:27:14,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:14,961 INFO L93 Difference]: Finished difference Result 18949 states and 30033 transitions. [2020-12-22 10:27:14,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 10:27:14,962 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 106 [2020-12-22 10:27:14,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:15,055 INFO L225 Difference]: With dead ends: 18949 [2020-12-22 10:27:15,056 INFO L226 Difference]: Without dead ends: 17971 [2020-12-22 10:27:15,065 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 10:27:15,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17971 states. [2020-12-22 10:27:15,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17971 to 4277. [2020-12-22 10:27:15,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4277 states. [2020-12-22 10:27:15,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4277 states to 4277 states and 6705 transitions. [2020-12-22 10:27:15,465 INFO L78 Accepts]: Start accepts. Automaton has 4277 states and 6705 transitions. Word has length 106 [2020-12-22 10:27:15,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:15,466 INFO L481 AbstractCegarLoop]: Abstraction has 4277 states and 6705 transitions. [2020-12-22 10:27:15,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:27:15,466 INFO L276 IsEmpty]: Start isEmpty. Operand 4277 states and 6705 transitions. [2020-12-22 10:27:15,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 10:27:15,467 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:15,468 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 10:27:15,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 10:27:15,468 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:15,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:15,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1813103660, now seen corresponding path program 1 times [2020-12-22 10:27:15,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:15,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981385995] [2020-12-22 10:27:15,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:15,575 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 10:27:15,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981385995] [2020-12-22 10:27:15,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:15,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:27:15,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105932131] [2020-12-22 10:27:15,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:27:15,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:15,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:27:15,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:15,581 INFO L87 Difference]: Start difference. First operand 4277 states and 6705 transitions. Second operand 3 states. [2020-12-22 10:27:15,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:15,809 INFO L93 Difference]: Finished difference Result 7171 states and 11253 transitions. [2020-12-22 10:27:15,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:27:15,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-22 10:27:15,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:15,823 INFO L225 Difference]: With dead ends: 7171 [2020-12-22 10:27:15,824 INFO L226 Difference]: Without dead ends: 5217 [2020-12-22 10:27:15,828 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 10:27:15,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5217 states. [2020-12-22 10:27:16,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5217 to 5215. [2020-12-22 10:27:16,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5215 states. [2020-12-22 10:27:16,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 8155 transitions. [2020-12-22 10:27:16,093 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 8155 transitions. Word has length 108 [2020-12-22 10:27:16,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:16,097 INFO L481 AbstractCegarLoop]: Abstraction has 5215 states and 8155 transitions. [2020-12-22 10:27:16,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:27:16,098 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 8155 transitions. [2020-12-22 10:27:16,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 10:27:16,099 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:16,099 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 10:27:16,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 10:27:16,100 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:16,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:16,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1879597172, now seen corresponding path program 1 times [2020-12-22 10:27:16,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:16,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283166423] [2020-12-22 10:27:16,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:16,587 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 10:27:16,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283166423] [2020-12-22 10:27:16,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:16,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:27:16,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596253439] [2020-12-22 10:27:16,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:27:16,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:16,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:27:16,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:27:16,590 INFO L87 Difference]: Start difference. First operand 5215 states and 8155 transitions. Second operand 10 states. [2020-12-22 10:27:17,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:17,454 INFO L93 Difference]: Finished difference Result 8107 states and 12677 transitions. [2020-12-22 10:27:17,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:27:17,455 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2020-12-22 10:27:17,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:17,470 INFO L225 Difference]: With dead ends: 8107 [2020-12-22 10:27:17,470 INFO L226 Difference]: Without dead ends: 5217 [2020-12-22 10:27:17,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-12-22 10:27:17,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5217 states. [2020-12-22 10:27:17,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5217 to 5215. [2020-12-22 10:27:17,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5215 states. [2020-12-22 10:27:17,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 8131 transitions. [2020-12-22 10:27:17,754 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 8131 transitions. Word has length 108 [2020-12-22 10:27:17,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:17,754 INFO L481 AbstractCegarLoop]: Abstraction has 5215 states and 8131 transitions. [2020-12-22 10:27:17,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:27:17,754 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 8131 transitions. [2020-12-22 10:27:17,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 10:27:17,756 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:17,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:27:17,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 10:27:17,756 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:17,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:17,757 INFO L82 PathProgramCache]: Analyzing trace with hash 621051568, now seen corresponding path program 1 times [2020-12-22 10:27:17,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:17,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912683938] [2020-12-22 10:27:17,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:17,835 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 10:27:17,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912683938] [2020-12-22 10:27:17,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:17,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:27:17,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256636173] [2020-12-22 10:27:17,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:27:17,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:17,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:27:17,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:17,838 INFO L87 Difference]: Start difference. First operand 5215 states and 8131 transitions. Second operand 3 states. [2020-12-22 10:27:18,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:18,191 INFO L93 Difference]: Finished difference Result 10707 states and 16645 transitions. [2020-12-22 10:27:18,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:27:18,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-22 10:27:18,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:18,209 INFO L225 Difference]: With dead ends: 10707 [2020-12-22 10:27:18,209 INFO L226 Difference]: Without dead ends: 7817 [2020-12-22 10:27:18,216 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 10:27:18,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7817 states. [2020-12-22 10:27:18,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7817 to 7815. [2020-12-22 10:27:18,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7815 states. [2020-12-22 10:27:18,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7815 states to 7815 states and 12099 transitions. [2020-12-22 10:27:18,776 INFO L78 Accepts]: Start accepts. Automaton has 7815 states and 12099 transitions. Word has length 108 [2020-12-22 10:27:18,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:18,777 INFO L481 AbstractCegarLoop]: Abstraction has 7815 states and 12099 transitions. [2020-12-22 10:27:18,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:27:18,777 INFO L276 IsEmpty]: Start isEmpty. Operand 7815 states and 12099 transitions. [2020-12-22 10:27:18,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 10:27:18,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:18,779 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 10:27:18,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 10:27:18,779 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:18,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:18,780 INFO L82 PathProgramCache]: Analyzing trace with hash 894739280, now seen corresponding path program 1 times [2020-12-22 10:27:18,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:18,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038836723] [2020-12-22 10:27:18,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:18,863 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 10:27:18,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038836723] [2020-12-22 10:27:18,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:18,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:27:18,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907762416] [2020-12-22 10:27:18,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:27:18,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:18,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:27:18,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:18,865 INFO L87 Difference]: Start difference. First operand 7815 states and 12099 transitions. Second operand 3 states. [2020-12-22 10:27:19,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:19,538 INFO L93 Difference]: Finished difference Result 18219 states and 28069 transitions. [2020-12-22 10:27:19,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:27:19,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-22 10:27:19,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:19,569 INFO L225 Difference]: With dead ends: 18219 [2020-12-22 10:27:19,569 INFO L226 Difference]: Without dead ends: 12729 [2020-12-22 10:27:19,580 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 10:27:19,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12729 states. [2020-12-22 10:27:20,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12729 to 12727. [2020-12-22 10:27:20,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12727 states. [2020-12-22 10:27:20,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12727 states to 12727 states and 19507 transitions. [2020-12-22 10:27:20,554 INFO L78 Accepts]: Start accepts. Automaton has 12727 states and 19507 transitions. Word has length 108 [2020-12-22 10:27:20,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:20,555 INFO L481 AbstractCegarLoop]: Abstraction has 12727 states and 19507 transitions. [2020-12-22 10:27:20,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:27:20,555 INFO L276 IsEmpty]: Start isEmpty. Operand 12727 states and 19507 transitions. [2020-12-22 10:27:20,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 10:27:20,556 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:20,556 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 10:27:20,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 10:27:20,557 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:20,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:20,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1581156368, now seen corresponding path program 1 times [2020-12-22 10:27:20,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:20,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629825475] [2020-12-22 10:27:20,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:20,648 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 10:27:20,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629825475] [2020-12-22 10:27:20,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:20,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:27:20,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171180140] [2020-12-22 10:27:20,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:27:20,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:20,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:27:20,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:20,657 INFO L87 Difference]: Start difference. First operand 12727 states and 19507 transitions. Second operand 3 states. [2020-12-22 10:27:22,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:22,114 INFO L93 Difference]: Finished difference Result 32379 states and 49333 transitions. [2020-12-22 10:27:22,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:27:22,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-22 10:27:22,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:22,159 INFO L225 Difference]: With dead ends: 32379 [2020-12-22 10:27:22,159 INFO L226 Difference]: Without dead ends: 21977 [2020-12-22 10:27:22,177 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 10:27:22,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21977 states. [2020-12-22 10:27:23,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21977 to 21975. [2020-12-22 10:27:23,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21975 states. [2020-12-22 10:27:23,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21975 states to 21975 states and 33267 transitions. [2020-12-22 10:27:23,826 INFO L78 Accepts]: Start accepts. Automaton has 21975 states and 33267 transitions. Word has length 108 [2020-12-22 10:27:23,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:23,826 INFO L481 AbstractCegarLoop]: Abstraction has 21975 states and 33267 transitions. [2020-12-22 10:27:23,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:27:23,826 INFO L276 IsEmpty]: Start isEmpty. Operand 21975 states and 33267 transitions. [2020-12-22 10:27:23,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 10:27:23,828 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:23,828 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 10:27:23,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 10:27:23,828 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:23,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:23,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1401750384, now seen corresponding path program 1 times [2020-12-22 10:27:23,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:23,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775539089] [2020-12-22 10:27:23,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:23,917 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 10:27:23,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775539089] [2020-12-22 10:27:23,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:23,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:27:23,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096154388] [2020-12-22 10:27:23,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:27:23,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:23,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:27:23,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:27:23,920 INFO L87 Difference]: Start difference. First operand 21975 states and 33267 transitions. Second operand 3 states. [2020-12-22 10:27:25,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:25,943 INFO L93 Difference]: Finished difference Result 58971 states and 88693 transitions. [2020-12-22 10:27:25,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:27:25,944 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-22 10:27:25,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:26,023 INFO L225 Difference]: With dead ends: 58971 [2020-12-22 10:27:26,023 INFO L226 Difference]: Without dead ends: 39321 [2020-12-22 10:27:26,047 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 10:27:26,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39321 states. [2020-12-22 10:27:28,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39321 to 39319. [2020-12-22 10:27:28,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39319 states. [2020-12-22 10:27:28,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39319 states to 39319 states and 58675 transitions. [2020-12-22 10:27:28,449 INFO L78 Accepts]: Start accepts. Automaton has 39319 states and 58675 transitions. Word has length 108 [2020-12-22 10:27:28,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:28,449 INFO L481 AbstractCegarLoop]: Abstraction has 39319 states and 58675 transitions. [2020-12-22 10:27:28,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:27:28,449 INFO L276 IsEmpty]: Start isEmpty. Operand 39319 states and 58675 transitions. [2020-12-22 10:27:28,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 10:27:28,451 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:28,451 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 10:27:28,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 10:27:28,451 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:28,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:28,452 INFO L82 PathProgramCache]: Analyzing trace with hash 2018214719, now seen corresponding path program 1 times [2020-12-22 10:27:28,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:28,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295737982] [2020-12-22 10:27:28,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:28,598 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 10:27:28,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295737982] [2020-12-22 10:27:28,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:28,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:27:28,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85379845] [2020-12-22 10:27:28,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:27:28,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:28,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:27:28,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:27:28,601 INFO L87 Difference]: Start difference. First operand 39319 states and 58675 transitions. Second operand 8 states. [2020-12-22 10:27:33,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:33,367 INFO L93 Difference]: Finished difference Result 70974 states and 104740 transitions. [2020-12-22 10:27:33,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:27:33,368 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2020-12-22 10:27:33,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:33,474 INFO L225 Difference]: With dead ends: 70974 [2020-12-22 10:27:33,474 INFO L226 Difference]: Without dead ends: 70972 [2020-12-22 10:27:33,493 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 10:27:33,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70972 states. [2020-12-22 10:27:36,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70972 to 40855. [2020-12-22 10:27:36,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40855 states. [2020-12-22 10:27:36,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40855 states to 40855 states and 60083 transitions. [2020-12-22 10:27:36,761 INFO L78 Accepts]: Start accepts. Automaton has 40855 states and 60083 transitions. Word has length 109 [2020-12-22 10:27:36,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:36,761 INFO L481 AbstractCegarLoop]: Abstraction has 40855 states and 60083 transitions. [2020-12-22 10:27:36,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:27:36,762 INFO L276 IsEmpty]: Start isEmpty. Operand 40855 states and 60083 transitions. [2020-12-22 10:27:36,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 10:27:36,766 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:36,766 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] [2020-12-22 10:27:36,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 10:27:36,766 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:36,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:36,767 INFO L82 PathProgramCache]: Analyzing trace with hash 2071286924, now seen corresponding path program 1 times [2020-12-22 10:27:36,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:36,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568096985] [2020-12-22 10:27:36,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:36,959 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 10:27:36,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568096985] [2020-12-22 10:27:36,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:36,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:27:36,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399666618] [2020-12-22 10:27:36,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 10:27:36,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:36,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 10:27:36,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:27:36,965 INFO L87 Difference]: Start difference. First operand 40855 states and 60083 transitions. Second operand 4 states. [2020-12-22 10:27:46,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:46,841 INFO L93 Difference]: Finished difference Result 43898 states and 65731 transitions. [2020-12-22 10:27:46,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 10:27:46,842 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-12-22 10:27:46,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:46,884 INFO L225 Difference]: With dead ends: 43898 [2020-12-22 10:27:46,884 INFO L226 Difference]: Without dead ends: 42357 [2020-12-22 10:27:46,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:27:46,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42357 states. [2020-12-22 10:27:49,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42357 to 42357. [2020-12-22 10:27:49,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42357 states. [2020-12-22 10:27:49,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42357 states to 42357 states and 61661 transitions. [2020-12-22 10:27:49,567 INFO L78 Accepts]: Start accepts. Automaton has 42357 states and 61661 transitions. Word has length 131 [2020-12-22 10:27:49,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:27:49,567 INFO L481 AbstractCegarLoop]: Abstraction has 42357 states and 61661 transitions. [2020-12-22 10:27:49,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 10:27:49,567 INFO L276 IsEmpty]: Start isEmpty. Operand 42357 states and 61661 transitions. [2020-12-22 10:27:49,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 10:27:49,589 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:27:49,589 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:27:49,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 10:27:49,590 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:27:49,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:27:49,590 INFO L82 PathProgramCache]: Analyzing trace with hash 949310851, now seen corresponding path program 1 times [2020-12-22 10:27:49,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:27:49,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610302063] [2020-12-22 10:27:49,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:27:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:27:49,805 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 10:27:49,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610302063] [2020-12-22 10:27:49,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:27:49,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:27:49,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761462656] [2020-12-22 10:27:49,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:27:49,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:27:49,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:27:49,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:27:49,808 INFO L87 Difference]: Start difference. First operand 42357 states and 61661 transitions. Second operand 10 states. [2020-12-22 10:28:07,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:28:07,700 INFO L93 Difference]: Finished difference Result 358023 states and 523686 transitions. [2020-12-22 10:28:07,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:28:07,701 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 148 [2020-12-22 10:28:07,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:28:08,323 INFO L225 Difference]: With dead ends: 358023 [2020-12-22 10:28:08,323 INFO L226 Difference]: Without dead ends: 319493 [2020-12-22 10:28:08,443 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 10:28:08,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319493 states. [2020-12-22 10:28:15,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319493 to 80885. [2020-12-22 10:28:15,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80885 states. [2020-12-22 10:28:15,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80885 states to 80885 states and 117725 transitions. [2020-12-22 10:28:15,779 INFO L78 Accepts]: Start accepts. Automaton has 80885 states and 117725 transitions. Word has length 148 [2020-12-22 10:28:15,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:28:15,780 INFO L481 AbstractCegarLoop]: Abstraction has 80885 states and 117725 transitions. [2020-12-22 10:28:15,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:28:15,780 INFO L276 IsEmpty]: Start isEmpty. Operand 80885 states and 117725 transitions. [2020-12-22 10:28:15,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 10:28:15,806 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:28:15,807 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:28:15,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 10:28:15,807 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:28:15,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:28:15,808 INFO L82 PathProgramCache]: Analyzing trace with hash 978833069, now seen corresponding path program 1 times [2020-12-22 10:28:15,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:28:15,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361014327] [2020-12-22 10:28:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:28:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:28:16,035 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 10:28:16,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361014327] [2020-12-22 10:28:16,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:28:16,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:28:16,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816784749] [2020-12-22 10:28:16,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:28:16,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:28:16,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:28:16,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:28:16,041 INFO L87 Difference]: Start difference. First operand 80885 states and 117725 transitions. Second operand 10 states. [2020-12-22 10:28:38,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:28:38,954 INFO L93 Difference]: Finished difference Result 396551 states and 579750 transitions. [2020-12-22 10:28:38,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:28:38,954 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 148 [2020-12-22 10:28:38,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:28:39,473 INFO L225 Difference]: With dead ends: 396551 [2020-12-22 10:28:39,474 INFO L226 Difference]: Without dead ends: 358021 [2020-12-22 10:28:39,602 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 10:28:39,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358021 states. [2020-12-22 10:28:51,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358021 to 138741. [2020-12-22 10:28:51,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138741 states. [2020-12-22 10:28:51,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138741 states to 138741 states and 201501 transitions. [2020-12-22 10:28:51,409 INFO L78 Accepts]: Start accepts. Automaton has 138741 states and 201501 transitions. Word has length 148 [2020-12-22 10:28:51,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:28:51,410 INFO L481 AbstractCegarLoop]: Abstraction has 138741 states and 201501 transitions. [2020-12-22 10:28:51,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:28:51,410 INFO L276 IsEmpty]: Start isEmpty. Operand 138741 states and 201501 transitions. [2020-12-22 10:28:51,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 10:28:51,440 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:28:51,440 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:28:51,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 10:28:51,441 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:28:51,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:28:51,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1252520781, now seen corresponding path program 1 times [2020-12-22 10:28:51,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:28:51,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439693561] [2020-12-22 10:28:51,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:28:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:28:51,947 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-22 10:28:51,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439693561] [2020-12-22 10:28:51,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:28:51,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:28:51,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467265665] [2020-12-22 10:28:51,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:28:51,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:28:51,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:28:51,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:28:51,951 INFO L87 Difference]: Start difference. First operand 138741 states and 201501 transitions. Second operand 10 states. [2020-12-22 10:29:19,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:29:19,591 INFO L93 Difference]: Finished difference Result 435079 states and 635814 transitions. [2020-12-22 10:29:19,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:29:19,591 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 148 [2020-12-22 10:29:19,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:29:20,306 INFO L225 Difference]: With dead ends: 435079 [2020-12-22 10:29:20,307 INFO L226 Difference]: Without dead ends: 396549 [2020-12-22 10:29:20,413 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 10:29:20,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396549 states. [2020-12-22 10:29:35,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396549 to 177269. [2020-12-22 10:29:35,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177269 states. [2020-12-22 10:29:36,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177269 states to 177269 states and 257565 transitions. [2020-12-22 10:29:36,354 INFO L78 Accepts]: Start accepts. Automaton has 177269 states and 257565 transitions. Word has length 148 [2020-12-22 10:29:36,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:29:36,355 INFO L481 AbstractCegarLoop]: Abstraction has 177269 states and 257565 transitions. [2020-12-22 10:29:36,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:29:36,355 INFO L276 IsEmpty]: Start isEmpty. Operand 177269 states and 257565 transitions. [2020-12-22 10:29:36,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 10:29:36,400 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:29:36,401 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:29:36,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 10:29:36,401 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:29:36,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:29:36,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1223374867, now seen corresponding path program 1 times [2020-12-22 10:29:36,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:29:36,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765328421] [2020-12-22 10:29:36,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:29:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:29:36,615 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 10:29:36,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765328421] [2020-12-22 10:29:36,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:29:36,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:29:36,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846286225] [2020-12-22 10:29:36,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:29:36,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:29:36,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:29:36,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:29:36,617 INFO L87 Difference]: Start difference. First operand 177269 states and 257565 transitions. Second operand 10 states.