/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:06:42,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:06:42,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:06:43,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:06:43,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:06:43,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:06:43,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:06:43,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:06:43,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:06:43,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:06:43,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:06:43,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:06:43,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:06:43,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:06:43,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:06:43,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:06:43,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:06:43,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:06:43,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:06:43,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:06:43,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:06:43,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:06:43,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:06:43,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:06:43,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:06:43,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:06:43,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:06:43,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:06:43,186 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:06:43,244 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:06:43,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:06:43,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:06:43,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:06:43,251 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:06:43,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:06:43,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:06:43,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:06:43,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:06:43,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:06:43,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:06:43,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:06:43,255 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:06:43,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:06:43,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:06:43,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:06:43,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:06:43,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:06:43,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:06:43,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:06:43,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:06:43,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:06:43,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:06:43,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:06:43,260 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:06:43,260 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:06:43,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:06:43,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:06:43,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:06:43,716 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:06:43,717 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:06:43,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-12-22 09:06:43,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05c6a9828/4ca6bc7cb2d14395b7b87b5a6b928328/FLAG8fe434b95 [2020-12-22 09:06:44,600 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:06:44,604 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-12-22 09:06:44,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05c6a9828/4ca6bc7cb2d14395b7b87b5a6b928328/FLAG8fe434b95 [2020-12-22 09:06:44,792 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05c6a9828/4ca6bc7cb2d14395b7b87b5a6b928328 [2020-12-22 09:06:44,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:06:44,799 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:06:44,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:06:44,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:06:44,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:06:44,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:06:44" (1/1) ... [2020-12-22 09:06:44,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6df54791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:44, skipping insertion in model container [2020-12-22 09:06:44,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:06:44" (1/1) ... [2020-12-22 09:06:44,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:06:44,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:06:45,640 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26135,26148] [2020-12-22 09:06:45,694 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30312,30325] [2020-12-22 09:06:45,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:06:45,860 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:06:46,086 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26135,26148] [2020-12-22 09:06:46,130 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30312,30325] [2020-12-22 09:06:46,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:06:46,282 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:06:46,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:46 WrapperNode [2020-12-22 09:06:46,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:06:46,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:06:46,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:06:46,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:06:46,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:46" (1/1) ... [2020-12-22 09:06:46,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:46" (1/1) ... [2020-12-22 09:06:46,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:06:46,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:06:46,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:06:46,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:06:46,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:46" (1/1) ... [2020-12-22 09:06:46,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:46" (1/1) ... [2020-12-22 09:06:46,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:46" (1/1) ... [2020-12-22 09:06:46,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:46" (1/1) ... [2020-12-22 09:06:46,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:46" (1/1) ... [2020-12-22 09:06:46,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:46" (1/1) ... [2020-12-22 09:06:46,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:46" (1/1) ... [2020-12-22 09:06:46,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:06:46,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:06:46,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:06:46,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:06:46,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:06:46,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:06:46,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:06:46,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:06:46,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:06:49,050 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:06:49,051 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:06:49,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:06:49 BoogieIcfgContainer [2020-12-22 09:06:49,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:06:49,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:06:49,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:06:49,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:06:49,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:06:44" (1/3) ... [2020-12-22 09:06:49,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c688727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:06:49, skipping insertion in model container [2020-12-22 09:06:49,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:46" (2/3) ... [2020-12-22 09:06:49,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c688727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:06:49, skipping insertion in model container [2020-12-22 09:06:49,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:06:49" (3/3) ... [2020-12-22 09:06:49,065 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-12-22 09:06:49,072 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:06:49,079 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 09:06:49,101 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 09:06:49,136 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:06:49,136 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:06:49,136 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:06:49,136 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:06:49,137 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:06:49,137 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:06:49,137 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:06:49,137 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:06:49,168 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states. [2020-12-22 09:06:49,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-12-22 09:06:49,196 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:49,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:06:49,198 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:49,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:49,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1561865833, now seen corresponding path program 1 times [2020-12-22 09:06:49,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:49,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157305891] [2020-12-22 09:06:49,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:50,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:06:50,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157305891] [2020-12-22 09:06:50,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:50,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:06:50,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415892208] [2020-12-22 09:06:50,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:06:50,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:50,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:06:50,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:06:50,583 INFO L87 Difference]: Start difference. First operand 671 states. Second operand 4 states. [2020-12-22 09:06:50,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:50,950 INFO L93 Difference]: Finished difference Result 1974 states and 3530 transitions. [2020-12-22 09:06:50,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:06:50,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 243 [2020-12-22 09:06:50,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:50,985 INFO L225 Difference]: With dead ends: 1974 [2020-12-22 09:06:50,985 INFO L226 Difference]: Without dead ends: 1308 [2020-12-22 09:06:50,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:06:51,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2020-12-22 09:06:51,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1272. [2020-12-22 09:06:51,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1272 states. [2020-12-22 09:06:51,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1991 transitions. [2020-12-22 09:06:51,203 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1991 transitions. Word has length 243 [2020-12-22 09:06:51,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:51,205 INFO L481 AbstractCegarLoop]: Abstraction has 1272 states and 1991 transitions. [2020-12-22 09:06:51,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:06:51,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1991 transitions. [2020-12-22 09:06:51,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-12-22 09:06:51,212 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:51,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:06:51,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:06:51,213 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:51,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:51,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1217305663, now seen corresponding path program 1 times [2020-12-22 09:06:51,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:51,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469234791] [2020-12-22 09:06:51,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:51,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:06:51,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469234791] [2020-12-22 09:06:51,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:51,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:06:51,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33441167] [2020-12-22 09:06:51,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:06:51,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:51,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:06:51,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:51,529 INFO L87 Difference]: Start difference. First operand 1272 states and 1991 transitions. Second operand 3 states. [2020-12-22 09:06:51,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:51,724 INFO L93 Difference]: Finished difference Result 3644 states and 5671 transitions. [2020-12-22 09:06:51,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:06:51,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 245 [2020-12-22 09:06:51,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:51,741 INFO L225 Difference]: With dead ends: 3644 [2020-12-22 09:06:51,741 INFO L226 Difference]: Without dead ends: 2497 [2020-12-22 09:06:51,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:51,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2497 states. [2020-12-22 09:06:51,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2497 to 2463. [2020-12-22 09:06:51,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2463 states. [2020-12-22 09:06:51,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2463 states to 2463 states and 3839 transitions. [2020-12-22 09:06:51,872 INFO L78 Accepts]: Start accepts. Automaton has 2463 states and 3839 transitions. Word has length 245 [2020-12-22 09:06:51,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:51,875 INFO L481 AbstractCegarLoop]: Abstraction has 2463 states and 3839 transitions. [2020-12-22 09:06:51,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:06:51,875 INFO L276 IsEmpty]: Start isEmpty. Operand 2463 states and 3839 transitions. [2020-12-22 09:06:51,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-12-22 09:06:51,885 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:51,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:06:51,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:06:51,887 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:51,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:51,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1122282342, now seen corresponding path program 1 times [2020-12-22 09:06:51,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:51,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972388247] [2020-12-22 09:06:51,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:52,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:06:52,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972388247] [2020-12-22 09:06:52,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:52,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:06:52,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410933510] [2020-12-22 09:06:52,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:06:52,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:52,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:06:52,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:52,116 INFO L87 Difference]: Start difference. First operand 2463 states and 3839 transitions. Second operand 3 states. [2020-12-22 09:06:52,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:52,445 INFO L93 Difference]: Finished difference Result 7322 states and 11401 transitions. [2020-12-22 09:06:52,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:06:52,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 245 [2020-12-22 09:06:52,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:52,483 INFO L225 Difference]: With dead ends: 7322 [2020-12-22 09:06:52,484 INFO L226 Difference]: Without dead ends: 4897 [2020-12-22 09:06:52,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:52,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4897 states. [2020-12-22 09:06:52,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4897 to 2482. [2020-12-22 09:06:52,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2482 states. [2020-12-22 09:06:52,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3867 transitions. [2020-12-22 09:06:52,759 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3867 transitions. Word has length 245 [2020-12-22 09:06:52,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:52,759 INFO L481 AbstractCegarLoop]: Abstraction has 2482 states and 3867 transitions. [2020-12-22 09:06:52,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:06:52,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3867 transitions. [2020-12-22 09:06:52,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-12-22 09:06:52,768 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:52,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:06:52,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:06:52,769 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:52,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:52,770 INFO L82 PathProgramCache]: Analyzing trace with hash -595902887, now seen corresponding path program 1 times [2020-12-22 09:06:52,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:52,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894640817] [2020-12-22 09:06:52,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:52,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:06:52,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894640817] [2020-12-22 09:06:52,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:52,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:06:52,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162447939] [2020-12-22 09:06:52,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:06:52,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:52,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:06:52,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:52,928 INFO L87 Difference]: Start difference. First operand 2482 states and 3867 transitions. Second operand 3 states. [2020-12-22 09:06:53,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:53,289 INFO L93 Difference]: Finished difference Result 7341 states and 11422 transitions. [2020-12-22 09:06:53,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:06:53,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2020-12-22 09:06:53,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:53,320 INFO L225 Difference]: With dead ends: 7341 [2020-12-22 09:06:53,320 INFO L226 Difference]: Without dead ends: 4915 [2020-12-22 09:06:53,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:53,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4915 states. [2020-12-22 09:06:53,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4915 to 2500. [2020-12-22 09:06:53,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2500 states. [2020-12-22 09:06:53,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 3888 transitions. [2020-12-22 09:06:53,558 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 3888 transitions. Word has length 246 [2020-12-22 09:06:53,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:53,558 INFO L481 AbstractCegarLoop]: Abstraction has 2500 states and 3888 transitions. [2020-12-22 09:06:53,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:06:53,559 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 3888 transitions. [2020-12-22 09:06:53,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-12-22 09:06:53,566 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:53,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:06:53,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:06:53,567 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:53,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:53,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1136476515, now seen corresponding path program 1 times [2020-12-22 09:06:53,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:53,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998477036] [2020-12-22 09:06:53,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:53,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:06:53,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998477036] [2020-12-22 09:06:53,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:53,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:06:53,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002806617] [2020-12-22 09:06:53,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:06:53,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:53,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:06:53,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:53,785 INFO L87 Difference]: Start difference. First operand 2500 states and 3888 transitions. Second operand 3 states. [2020-12-22 09:06:54,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:54,229 INFO L93 Difference]: Finished difference Result 5029 states and 7862 transitions. [2020-12-22 09:06:54,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:06:54,230 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 247 [2020-12-22 09:06:54,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:54,256 INFO L225 Difference]: With dead ends: 5029 [2020-12-22 09:06:54,256 INFO L226 Difference]: Without dead ends: 3348 [2020-12-22 09:06:54,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:54,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3348 states. [2020-12-22 09:06:54,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3348 to 2988. [2020-12-22 09:06:54,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2988 states. [2020-12-22 09:06:54,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2988 states to 2988 states and 4694 transitions. [2020-12-22 09:06:54,552 INFO L78 Accepts]: Start accepts. Automaton has 2988 states and 4694 transitions. Word has length 247 [2020-12-22 09:06:54,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:54,554 INFO L481 AbstractCegarLoop]: Abstraction has 2988 states and 4694 transitions. [2020-12-22 09:06:54,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:06:54,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2988 states and 4694 transitions. [2020-12-22 09:06:54,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-12-22 09:06:54,561 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:54,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:06:54,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:06:54,562 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:54,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:54,563 INFO L82 PathProgramCache]: Analyzing trace with hash -325556156, now seen corresponding path program 1 times [2020-12-22 09:06:54,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:54,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150141641] [2020-12-22 09:06:54,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:54,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:06:54,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150141641] [2020-12-22 09:06:54,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:54,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:06:54,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536141363] [2020-12-22 09:06:54,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:06:54,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:54,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:06:54,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:54,891 INFO L87 Difference]: Start difference. First operand 2988 states and 4694 transitions. Second operand 3 states. [2020-12-22 09:06:55,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:55,355 INFO L93 Difference]: Finished difference Result 8512 states and 13313 transitions. [2020-12-22 09:06:55,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:06:55,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 247 [2020-12-22 09:06:55,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:55,389 INFO L225 Difference]: With dead ends: 8512 [2020-12-22 09:06:55,389 INFO L226 Difference]: Without dead ends: 5765 [2020-12-22 09:06:55,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:55,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5765 states. [2020-12-22 09:06:55,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5765 to 5733. [2020-12-22 09:06:55,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5733 states. [2020-12-22 09:06:55,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5733 states to 5733 states and 8948 transitions. [2020-12-22 09:06:55,870 INFO L78 Accepts]: Start accepts. Automaton has 5733 states and 8948 transitions. Word has length 247 [2020-12-22 09:06:55,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:55,871 INFO L481 AbstractCegarLoop]: Abstraction has 5733 states and 8948 transitions. [2020-12-22 09:06:55,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:06:55,876 INFO L276 IsEmpty]: Start isEmpty. Operand 5733 states and 8948 transitions. [2020-12-22 09:06:55,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-12-22 09:06:55,887 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:55,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:06:55,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:06:55,895 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:55,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:55,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1222667847, now seen corresponding path program 1 times [2020-12-22 09:06:55,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:55,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020849729] [2020-12-22 09:06:55,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:56,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:06:56,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020849729] [2020-12-22 09:06:56,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:56,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:06:56,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066500490] [2020-12-22 09:06:56,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:06:56,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:56,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:06:56,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:06:56,459 INFO L87 Difference]: Start difference. First operand 5733 states and 8948 transitions. Second operand 5 states. [2020-12-22 09:06:57,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:57,541 INFO L93 Difference]: Finished difference Result 16704 states and 26035 transitions. [2020-12-22 09:06:57,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:06:57,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 247 [2020-12-22 09:06:57,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:57,578 INFO L225 Difference]: With dead ends: 16704 [2020-12-22 09:06:57,578 INFO L226 Difference]: Without dead ends: 11026 [2020-12-22 09:06:57,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:06:57,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11026 states. [2020-12-22 09:06:58,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11026 to 10999. [2020-12-22 09:06:58,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10999 states. [2020-12-22 09:06:58,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10999 states to 10999 states and 17032 transitions. [2020-12-22 09:06:58,472 INFO L78 Accepts]: Start accepts. Automaton has 10999 states and 17032 transitions. Word has length 247 [2020-12-22 09:06:58,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:58,473 INFO L481 AbstractCegarLoop]: Abstraction has 10999 states and 17032 transitions. [2020-12-22 09:06:58,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:06:58,473 INFO L276 IsEmpty]: Start isEmpty. Operand 10999 states and 17032 transitions. [2020-12-22 09:06:58,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-12-22 09:06:58,493 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:58,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:06:58,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:06:58,494 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:58,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:58,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1280969416, now seen corresponding path program 1 times [2020-12-22 09:06:58,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:58,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527422612] [2020-12-22 09:06:58,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:06:58,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527422612] [2020-12-22 09:06:58,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:58,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:06:58,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790353371] [2020-12-22 09:06:58,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:06:58,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:58,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:06:58,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:06:58,920 INFO L87 Difference]: Start difference. First operand 10999 states and 17032 transitions. Second operand 5 states. [2020-12-22 09:07:00,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:00,597 INFO L93 Difference]: Finished difference Result 31845 states and 49211 transitions. [2020-12-22 09:07:00,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:07:00,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2020-12-22 09:07:00,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:00,652 INFO L225 Difference]: With dead ends: 31845 [2020-12-22 09:07:00,652 INFO L226 Difference]: Without dead ends: 20963 [2020-12-22 09:07:00,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:07:00,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20963 states. [2020-12-22 09:07:02,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20963 to 20945. [2020-12-22 09:07:02,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20945 states. [2020-12-22 09:07:02,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20945 states to 20945 states and 32144 transitions. [2020-12-22 09:07:02,163 INFO L78 Accepts]: Start accepts. Automaton has 20945 states and 32144 transitions. Word has length 249 [2020-12-22 09:07:02,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:02,164 INFO L481 AbstractCegarLoop]: Abstraction has 20945 states and 32144 transitions. [2020-12-22 09:07:02,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:07:02,164 INFO L276 IsEmpty]: Start isEmpty. Operand 20945 states and 32144 transitions. [2020-12-22 09:07:02,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-12-22 09:07:02,207 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:02,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:07:02,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:07:02,208 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:02,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:02,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1753737179, now seen corresponding path program 1 times [2020-12-22 09:07:02,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:02,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375661869] [2020-12-22 09:07:02,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:02,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:07:02,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375661869] [2020-12-22 09:07:02,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:02,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:07:02,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373499258] [2020-12-22 09:07:02,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:07:02,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:02,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:07:02,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:07:02,683 INFO L87 Difference]: Start difference. First operand 20945 states and 32144 transitions. Second operand 4 states. [2020-12-22 09:07:05,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:05,193 INFO L93 Difference]: Finished difference Result 61621 states and 94437 transitions. [2020-12-22 09:07:05,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:07:05,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 249 [2020-12-22 09:07:05,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:05,293 INFO L225 Difference]: With dead ends: 61621 [2020-12-22 09:07:05,293 INFO L226 Difference]: Without dead ends: 40906 [2020-12-22 09:07:05,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:07:05,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40906 states. [2020-12-22 09:07:07,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40906 to 40737. [2020-12-22 09:07:07,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40737 states. [2020-12-22 09:07:07,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40737 states to 40737 states and 62068 transitions. [2020-12-22 09:07:07,693 INFO L78 Accepts]: Start accepts. Automaton has 40737 states and 62068 transitions. Word has length 249 [2020-12-22 09:07:07,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:07,693 INFO L481 AbstractCegarLoop]: Abstraction has 40737 states and 62068 transitions. [2020-12-22 09:07:07,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:07:07,694 INFO L276 IsEmpty]: Start isEmpty. Operand 40737 states and 62068 transitions. [2020-12-22 09:07:07,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-12-22 09:07:07,758 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:07,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:07:07,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:07:07,759 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:07,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:07,759 INFO L82 PathProgramCache]: Analyzing trace with hash 180168292, now seen corresponding path program 1 times [2020-12-22 09:07:07,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:07,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647029501] [2020-12-22 09:07:07,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:07,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:07:07,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647029501] [2020-12-22 09:07:07,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:07,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:07:07,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005836038] [2020-12-22 09:07:07,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:07:07,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:07,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:07:07,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:07,969 INFO L87 Difference]: Start difference. First operand 40737 states and 62068 transitions. Second operand 3 states. [2020-12-22 09:07:11,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:11,602 INFO L93 Difference]: Finished difference Result 119187 states and 181156 transitions. [2020-12-22 09:07:11,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:07:11,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 251 [2020-12-22 09:07:11,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:11,816 INFO L225 Difference]: With dead ends: 119187 [2020-12-22 09:07:11,817 INFO L226 Difference]: Without dead ends: 79830 [2020-12-22 09:07:11,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:11,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79830 states. [2020-12-22 09:07:15,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79830 to 79661. [2020-12-22 09:07:15,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79661 states. [2020-12-22 09:07:16,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79661 states to 79661 states and 120582 transitions. [2020-12-22 09:07:16,168 INFO L78 Accepts]: Start accepts. Automaton has 79661 states and 120582 transitions. Word has length 251 [2020-12-22 09:07:16,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:16,168 INFO L481 AbstractCegarLoop]: Abstraction has 79661 states and 120582 transitions. [2020-12-22 09:07:16,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:07:16,169 INFO L276 IsEmpty]: Start isEmpty. Operand 79661 states and 120582 transitions. [2020-12-22 09:07:16,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-12-22 09:07:16,311 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:16,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:07:16,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:07:16,312 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:16,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:16,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1276772609, now seen corresponding path program 1 times [2020-12-22 09:07:16,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:16,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114690137] [2020-12-22 09:07:16,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:16,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:07:16,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114690137] [2020-12-22 09:07:16,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:16,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:07:16,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405473297] [2020-12-22 09:07:16,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:07:16,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:16,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:07:16,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:16,422 INFO L87 Difference]: Start difference. First operand 79661 states and 120582 transitions. Second operand 3 states. [2020-12-22 09:07:23,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:23,558 INFO L93 Difference]: Finished difference Result 237859 states and 359922 transitions. [2020-12-22 09:07:23,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:07:23,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 251 [2020-12-22 09:07:23,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:23,890 INFO L225 Difference]: With dead ends: 237859 [2020-12-22 09:07:23,890 INFO L226 Difference]: Without dead ends: 158860 [2020-12-22 09:07:23,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:24,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158860 states. [2020-12-22 09:07:29,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158860 to 79871. [2020-12-22 09:07:29,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79871 states. [2020-12-22 09:07:29,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79871 states to 79871 states and 120894 transitions. [2020-12-22 09:07:29,227 INFO L78 Accepts]: Start accepts. Automaton has 79871 states and 120894 transitions. Word has length 251 [2020-12-22 09:07:29,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:29,228 INFO L481 AbstractCegarLoop]: Abstraction has 79871 states and 120894 transitions. [2020-12-22 09:07:29,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:07:29,228 INFO L276 IsEmpty]: Start isEmpty. Operand 79871 states and 120894 transitions. [2020-12-22 09:07:29,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-12-22 09:07:29,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:29,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:07:29,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:07:29,300 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:29,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:29,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1728660198, now seen corresponding path program 1 times [2020-12-22 09:07:29,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:29,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117386136] [2020-12-22 09:07:29,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:29,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:07:29,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117386136] [2020-12-22 09:07:29,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:29,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:07:29,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018710199] [2020-12-22 09:07:29,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:07:29,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:29,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:07:29,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:29,400 INFO L87 Difference]: Start difference. First operand 79871 states and 120894 transitions. Second operand 3 states. [2020-12-22 09:07:37,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:37,014 INFO L93 Difference]: Finished difference Result 238047 states and 360128 transitions. [2020-12-22 09:07:37,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:07:37,015 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 252 [2020-12-22 09:07:37,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:37,436 INFO L225 Difference]: With dead ends: 238047 [2020-12-22 09:07:37,436 INFO L226 Difference]: Without dead ends: 159038 [2020-12-22 09:07:37,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:37,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159038 states. [2020-12-22 09:07:42,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159038 to 80101. [2020-12-22 09:07:42,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80101 states. [2020-12-22 09:07:42,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80101 states to 80101 states and 121158 transitions. [2020-12-22 09:07:42,808 INFO L78 Accepts]: Start accepts. Automaton has 80101 states and 121158 transitions. Word has length 252 [2020-12-22 09:07:42,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:42,808 INFO L481 AbstractCegarLoop]: Abstraction has 80101 states and 121158 transitions. [2020-12-22 09:07:42,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:07:42,808 INFO L276 IsEmpty]: Start isEmpty. Operand 80101 states and 121158 transitions. [2020-12-22 09:07:43,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-12-22 09:07:43,030 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:43,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:07:43,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:07:43,030 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:43,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:43,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1519534572, now seen corresponding path program 1 times [2020-12-22 09:07:43,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:43,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878991340] [2020-12-22 09:07:43,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:07:43,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878991340] [2020-12-22 09:07:43,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:43,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:07:43,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856945664] [2020-12-22 09:07:43,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:07:43,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:43,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:07:43,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:07:43,408 INFO L87 Difference]: Start difference. First operand 80101 states and 121158 transitions. Second operand 5 states. [2020-12-22 09:07:51,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:51,940 INFO L93 Difference]: Finished difference Result 234496 states and 354019 transitions. [2020-12-22 09:07:51,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:07:51,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 253 [2020-12-22 09:07:51,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:52,181 INFO L225 Difference]: With dead ends: 234496 [2020-12-22 09:07:52,181 INFO L226 Difference]: Without dead ends: 154976 [2020-12-22 09:07:52,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:07:52,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154976 states. [2020-12-22 09:08:01,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154976 to 154945. [2020-12-22 09:08:01,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154945 states. [2020-12-22 09:08:01,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154945 states to 154945 states and 232272 transitions. [2020-12-22 09:08:01,504 INFO L78 Accepts]: Start accepts. Automaton has 154945 states and 232272 transitions. Word has length 253 [2020-12-22 09:08:01,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:08:01,504 INFO L481 AbstractCegarLoop]: Abstraction has 154945 states and 232272 transitions. [2020-12-22 09:08:01,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:08:01,504 INFO L276 IsEmpty]: Start isEmpty. Operand 154945 states and 232272 transitions. [2020-12-22 09:08:01,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-12-22 09:08:01,891 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:01,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:08:01,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:08:01,891 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:01,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:01,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1397662052, now seen corresponding path program 1 times [2020-12-22 09:08:01,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:01,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489809318] [2020-12-22 09:08:01,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:08:02,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489809318] [2020-12-22 09:08:02,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:02,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:08:02,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819942523] [2020-12-22 09:08:02,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:08:02,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:02,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:08:02,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:08:02,197 INFO L87 Difference]: Start difference. First operand 154945 states and 232272 transitions. Second operand 4 states. [2020-12-22 09:08:12,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:08:12,330 INFO L93 Difference]: Finished difference Result 330388 states and 494342 transitions. [2020-12-22 09:08:12,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:08:12,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 255 [2020-12-22 09:08:12,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:08:12,642 INFO L225 Difference]: With dead ends: 330388 [2020-12-22 09:08:12,642 INFO L226 Difference]: Without dead ends: 177061 [2020-12-22 09:08:12,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:08:12,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177061 states. [2020-12-22 09:08:22,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177061 to 155180. [2020-12-22 09:08:22,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155180 states. [2020-12-22 09:08:22,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155180 states to 155180 states and 232458 transitions. [2020-12-22 09:08:22,906 INFO L78 Accepts]: Start accepts. Automaton has 155180 states and 232458 transitions. Word has length 255 [2020-12-22 09:08:22,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:08:22,906 INFO L481 AbstractCegarLoop]: Abstraction has 155180 states and 232458 transitions. [2020-12-22 09:08:22,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:08:22,907 INFO L276 IsEmpty]: Start isEmpty. Operand 155180 states and 232458 transitions. [2020-12-22 09:08:23,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-12-22 09:08:23,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:23,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:08:23,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:08:23,299 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:23,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:23,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1690738465, now seen corresponding path program 1 times [2020-12-22 09:08:23,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:23,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047608475] [2020-12-22 09:08:23,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:23,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:08:23,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047608475] [2020-12-22 09:08:23,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:23,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:08:23,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841661453] [2020-12-22 09:08:23,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:08:23,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:23,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:08:23,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:08:23,428 INFO L87 Difference]: Start difference. First operand 155180 states and 232458 transitions. Second operand 3 states. [2020-12-22 09:08:41,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:08:41,413 INFO L93 Difference]: Finished difference Result 459196 states and 687395 transitions. [2020-12-22 09:08:41,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:08:41,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 257 [2020-12-22 09:08:41,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:08:42,176 INFO L225 Difference]: With dead ends: 459196 [2020-12-22 09:08:42,177 INFO L226 Difference]: Without dead ends: 306494 [2020-12-22 09:08:42,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:08:42,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306494 states. [2020-12-22 09:08:54,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306494 to 155653. [2020-12-22 09:08:54,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155653 states. [2020-12-22 09:08:54,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155653 states to 155653 states and 233039 transitions. [2020-12-22 09:08:54,447 INFO L78 Accepts]: Start accepts. Automaton has 155653 states and 233039 transitions. Word has length 257 [2020-12-22 09:08:54,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:08:54,447 INFO L481 AbstractCegarLoop]: Abstraction has 155653 states and 233039 transitions. [2020-12-22 09:08:54,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:08:54,447 INFO L276 IsEmpty]: Start isEmpty. Operand 155653 states and 233039 transitions. [2020-12-22 09:08:54,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-12-22 09:08:54,558 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:54,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:08:54,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 09:08:54,559 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:54,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:54,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1111780608, now seen corresponding path program 1 times [2020-12-22 09:08:54,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:54,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708176948] [2020-12-22 09:08:54,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:55,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:08:55,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708176948] [2020-12-22 09:08:55,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:55,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:08:55,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219546742] [2020-12-22 09:08:55,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:08:55,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:55,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:08:55,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:08:55,113 INFO L87 Difference]: Start difference. First operand 155653 states and 233039 transitions. Second operand 3 states. [2020-12-22 09:09:15,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:15,665 INFO L93 Difference]: Finished difference Result 461615 states and 690954 transitions. [2020-12-22 09:09:15,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:09:15,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 258 [2020-12-22 09:09:15,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:16,378 INFO L225 Difference]: With dead ends: 461615 [2020-12-22 09:09:16,378 INFO L226 Difference]: Without dead ends: 308551 [2020-12-22 09:09:16,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:16,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308551 states. [2020-12-22 09:09:28,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308551 to 156338. [2020-12-22 09:09:28,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156338 states. [2020-12-22 09:09:29,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156338 states to 156338 states and 233843 transitions. [2020-12-22 09:09:29,322 INFO L78 Accepts]: Start accepts. Automaton has 156338 states and 233843 transitions. Word has length 258 [2020-12-22 09:09:29,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:09:29,323 INFO L481 AbstractCegarLoop]: Abstraction has 156338 states and 233843 transitions. [2020-12-22 09:09:29,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:09:29,323 INFO L276 IsEmpty]: Start isEmpty. Operand 156338 states and 233843 transitions. [2020-12-22 09:09:29,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-12-22 09:09:29,441 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:29,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:09:29,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 09:09:29,442 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:29,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:29,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1441002131, now seen corresponding path program 1 times [2020-12-22 09:09:29,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:29,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890761574] [2020-12-22 09:09:29,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:09:29,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:09:29,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890761574] [2020-12-22 09:09:29,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:09:29,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:09:29,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411227026] [2020-12-22 09:09:29,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:09:29,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:09:29,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:09:29,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:29,581 INFO L87 Difference]: Start difference. First operand 156338 states and 233843 transitions. Second operand 3 states. [2020-12-22 09:09:45,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:45,608 INFO L93 Difference]: Finished difference Result 334933 states and 509481 transitions. [2020-12-22 09:09:45,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:09:45,609 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 259 [2020-12-22 09:09:45,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:45,998 INFO L225 Difference]: With dead ends: 334933 [2020-12-22 09:09:45,998 INFO L226 Difference]: Without dead ends: 223076 [2020-12-22 09:09:46,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:46,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223076 states. [2020-12-22 09:10:02,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223076 to 203794. [2020-12-22 09:10:02,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203794 states. [2020-12-22 09:10:02,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203794 states to 203794 states and 310803 transitions. [2020-12-22 09:10:02,470 INFO L78 Accepts]: Start accepts. Automaton has 203794 states and 310803 transitions. Word has length 259 [2020-12-22 09:10:02,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:02,470 INFO L481 AbstractCegarLoop]: Abstraction has 203794 states and 310803 transitions. [2020-12-22 09:10:02,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:10:02,470 INFO L276 IsEmpty]: Start isEmpty. Operand 203794 states and 310803 transitions. [2020-12-22 09:10:02,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-12-22 09:10:02,614 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:02,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:10:02,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 09:10:02,615 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:02,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:02,616 INFO L82 PathProgramCache]: Analyzing trace with hash 857209618, now seen corresponding path program 1 times [2020-12-22 09:10:02,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:02,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055936308] [2020-12-22 09:10:02,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:03,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:10:03,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055936308] [2020-12-22 09:10:03,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:03,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:03,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897993360] [2020-12-22 09:10:03,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:03,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:03,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:03,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:03,219 INFO L87 Difference]: Start difference. First operand 203794 states and 310803 transitions. Second operand 3 states. [2020-12-22 09:10:27,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:27,429 INFO L93 Difference]: Finished difference Result 465341 states and 723233 transitions. [2020-12-22 09:10:27,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:10:27,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 259 [2020-12-22 09:10:27,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:28,194 INFO L225 Difference]: With dead ends: 465341 [2020-12-22 09:10:28,194 INFO L226 Difference]: Without dead ends: 310124 [2020-12-22 09:10:28,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:28,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310124 states.