/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_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:14:48,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:14:48,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:14:49,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:14:49,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:14:49,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:14:49,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:14:49,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:14:49,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:14:49,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:14:49,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:14:49,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:14:49,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:14:49,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:14:49,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:14:49,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:14:49,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:14:49,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:14:49,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:14:49,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:14:49,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:14:49,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:14:49,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:14:49,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:14:49,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:14:49,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:14:49,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:14:49,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:14:49,091 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:14:49,151 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:14:49,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:14:49,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:14:49,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:14:49,156 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:14:49,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:14:49,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:14:49,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:14:49,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:14:49,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:14:49,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:14:49,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:14:49,159 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:14:49,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:14:49,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:14:49,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:14:49,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:14:49,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:14:49,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:14:49,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:14:49,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:14:49,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:14:49,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:14:49,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:14:49,161 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:14:49,161 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:14:49,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:14:49,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:14:49,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:14:49,630 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:14:49,630 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:14:49,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-12-22 08:14:49,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1df108102/32c5b81fe74545caba4846545ca8f84b/FLAG3c341bd6f [2020-12-22 08:14:50,581 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:14:50,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-12-22 08:14:50,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1df108102/32c5b81fe74545caba4846545ca8f84b/FLAG3c341bd6f [2020-12-22 08:14:50,649 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1df108102/32c5b81fe74545caba4846545ca8f84b [2020-12-22 08:14:50,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:14:50,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:14:50,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:14:50,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:14:50,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:14:50,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:14:50" (1/1) ... [2020-12-22 08:14:50,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f25e8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:50, skipping insertion in model container [2020-12-22 08:14:50,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:14:50" (1/1) ... [2020-12-22 08:14:50,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:14:50,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:14:51,519 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_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[36284,36297] [2020-12-22 08:14:51,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:14:51,939 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:14:52,370 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_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[36284,36297] [2020-12-22 08:14:52,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:14:52,720 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:14:52,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:52 WrapperNode [2020-12-22 08:14:52,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:14:52,723 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:14:52,723 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:14:52,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:14:52,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:52" (1/1) ... [2020-12-22 08:14:52,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:52" (1/1) ... [2020-12-22 08:14:52,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:14:52,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:14:52,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:14:52,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:14:52,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:52" (1/1) ... [2020-12-22 08:14:52,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:52" (1/1) ... [2020-12-22 08:14:52,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:52" (1/1) ... [2020-12-22 08:14:52,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:52" (1/1) ... [2020-12-22 08:14:53,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:52" (1/1) ... [2020-12-22 08:14:53,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:52" (1/1) ... [2020-12-22 08:14:53,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:52" (1/1) ... [2020-12-22 08:14:53,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:14:53,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:14:53,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:14:53,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:14:53,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:14:53,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:14:53,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:14:53,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:14:53,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:14:57,399 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:14:57,400 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:14:57,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:14:57 BoogieIcfgContainer [2020-12-22 08:14:57,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:14:57,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:14:57,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:14:57,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:14:57,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:14:50" (1/3) ... [2020-12-22 08:14:57,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1663c6a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:14:57, skipping insertion in model container [2020-12-22 08:14:57,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:14:52" (2/3) ... [2020-12-22 08:14:57,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1663c6a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:14:57, skipping insertion in model container [2020-12-22 08:14:57,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:14:57" (3/3) ... [2020-12-22 08:14:57,421 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-12-22 08:14:57,429 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:14:57,436 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:14:57,460 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:14:57,515 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:14:57,516 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:14:57,516 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:14:57,516 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:14:57,516 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:14:57,516 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:14:57,516 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:14:57,516 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:14:57,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states. [2020-12-22 08:14:57,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-12-22 08:14:57,620 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:14:57,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:14:57,623 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:14:57,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:14:57,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1828741266, now seen corresponding path program 1 times [2020-12-22 08:14:57,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:14:57,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526777031] [2020-12-22 08:14:57,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:14:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:14:58,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:14:58,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526777031] [2020-12-22 08:14:58,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:14:58,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:14:58,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646068708] [2020-12-22 08:14:58,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:14:58,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:14:58,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:14:58,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:14:58,665 INFO L87 Difference]: Start difference. First operand 1434 states. Second operand 3 states. [2020-12-22 08:14:58,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:14:58,944 INFO L93 Difference]: Finished difference Result 2878 states and 5043 transitions. [2020-12-22 08:14:58,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:14:58,946 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 352 [2020-12-22 08:14:58,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:14:58,995 INFO L225 Difference]: With dead ends: 2878 [2020-12-22 08:14:58,995 INFO L226 Difference]: Without dead ends: 2005 [2020-12-22 08:14:59,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:14:59,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2020-12-22 08:14:59,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 2003. [2020-12-22 08:14:59,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2003 states. [2020-12-22 08:14:59,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 3350 transitions. [2020-12-22 08:14:59,205 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 3350 transitions. Word has length 352 [2020-12-22 08:14:59,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:14:59,207 INFO L481 AbstractCegarLoop]: Abstraction has 2003 states and 3350 transitions. [2020-12-22 08:14:59,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:14:59,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 3350 transitions. [2020-12-22 08:14:59,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-12-22 08:14:59,217 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:14:59,218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:14:59,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:14:59,219 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:14:59,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:14:59,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1735247812, now seen corresponding path program 1 times [2020-12-22 08:14:59,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:14:59,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482831839] [2020-12-22 08:14:59,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:14:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:14:59,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:14:59,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482831839] [2020-12-22 08:14:59,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:14:59,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:14:59,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168012694] [2020-12-22 08:14:59,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:14:59,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:14:59,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:14:59,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:14:59,727 INFO L87 Difference]: Start difference. First operand 2003 states and 3350 transitions. Second operand 3 states. [2020-12-22 08:15:00,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:00,011 INFO L93 Difference]: Finished difference Result 4410 states and 7289 transitions. [2020-12-22 08:15:00,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:15:00,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 354 [2020-12-22 08:15:00,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:00,034 INFO L225 Difference]: With dead ends: 4410 [2020-12-22 08:15:00,035 INFO L226 Difference]: Without dead ends: 2997 [2020-12-22 08:15:00,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:00,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2020-12-22 08:15:00,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 2995. [2020-12-22 08:15:00,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2995 states. [2020-12-22 08:15:00,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 4966 transitions. [2020-12-22 08:15:00,212 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 4966 transitions. Word has length 354 [2020-12-22 08:15:00,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:00,214 INFO L481 AbstractCegarLoop]: Abstraction has 2995 states and 4966 transitions. [2020-12-22 08:15:00,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:15:00,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 4966 transitions. [2020-12-22 08:15:00,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-12-22 08:15:00,228 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:00,228 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:15:00,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:15:00,229 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:00,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:00,232 INFO L82 PathProgramCache]: Analyzing trace with hash -127237084, now seen corresponding path program 1 times [2020-12-22 08:15:00,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:00,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580927867] [2020-12-22 08:15:00,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:00,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:00,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580927867] [2020-12-22 08:15:00,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:00,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:15:00,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875594941] [2020-12-22 08:15:00,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:15:00,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:00,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:15:00,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:00,667 INFO L87 Difference]: Start difference. First operand 2995 states and 4966 transitions. Second operand 3 states. [2020-12-22 08:15:00,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:00,959 INFO L93 Difference]: Finished difference Result 7050 states and 11584 transitions. [2020-12-22 08:15:00,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:15:00,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 356 [2020-12-22 08:15:00,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:00,991 INFO L225 Difference]: With dead ends: 7050 [2020-12-22 08:15:00,991 INFO L226 Difference]: Without dead ends: 4668 [2020-12-22 08:15:00,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:01,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4668 states. [2020-12-22 08:15:01,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4668 to 4666. [2020-12-22 08:15:01,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4666 states. [2020-12-22 08:15:01,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4666 states to 4666 states and 7674 transitions. [2020-12-22 08:15:01,292 INFO L78 Accepts]: Start accepts. Automaton has 4666 states and 7674 transitions. Word has length 356 [2020-12-22 08:15:01,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:01,301 INFO L481 AbstractCegarLoop]: Abstraction has 4666 states and 7674 transitions. [2020-12-22 08:15:01,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:15:01,302 INFO L276 IsEmpty]: Start isEmpty. Operand 4666 states and 7674 transitions. [2020-12-22 08:15:01,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-12-22 08:15:01,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:01,318 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:15:01,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:15:01,318 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:01,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:01,319 INFO L82 PathProgramCache]: Analyzing trace with hash 946969340, now seen corresponding path program 1 times [2020-12-22 08:15:01,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:01,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548288361] [2020-12-22 08:15:01,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:01,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:01,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548288361] [2020-12-22 08:15:01,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:01,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:15:01,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245472531] [2020-12-22 08:15:01,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:15:01,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:01,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:15:01,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:01,816 INFO L87 Difference]: Start difference. First operand 4666 states and 7674 transitions. Second operand 3 states. [2020-12-22 08:15:02,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:02,455 INFO L93 Difference]: Finished difference Result 11405 states and 18619 transitions. [2020-12-22 08:15:02,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:15:02,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 358 [2020-12-22 08:15:02,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:02,512 INFO L225 Difference]: With dead ends: 11405 [2020-12-22 08:15:02,512 INFO L226 Difference]: Without dead ends: 7375 [2020-12-22 08:15:02,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:02,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7375 states. [2020-12-22 08:15:03,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7375 to 7373. [2020-12-22 08:15:03,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7373 states. [2020-12-22 08:15:03,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7373 states to 7373 states and 12024 transitions. [2020-12-22 08:15:03,096 INFO L78 Accepts]: Start accepts. Automaton has 7373 states and 12024 transitions. Word has length 358 [2020-12-22 08:15:03,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:03,097 INFO L481 AbstractCegarLoop]: Abstraction has 7373 states and 12024 transitions. [2020-12-22 08:15:03,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:15:03,097 INFO L276 IsEmpty]: Start isEmpty. Operand 7373 states and 12024 transitions. [2020-12-22 08:15:03,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-12-22 08:15:03,117 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:03,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:15:03,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:15:03,118 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:03,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:03,119 INFO L82 PathProgramCache]: Analyzing trace with hash 879322416, now seen corresponding path program 1 times [2020-12-22 08:15:03,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:03,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360962891] [2020-12-22 08:15:03,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:03,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:03,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360962891] [2020-12-22 08:15:03,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:03,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:15:03,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480184417] [2020-12-22 08:15:03,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:15:03,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:03,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:15:03,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:03,404 INFO L87 Difference]: Start difference. First operand 7373 states and 12024 transitions. Second operand 3 states. [2020-12-22 08:15:04,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:04,175 INFO L93 Difference]: Finished difference Result 18224 states and 29508 transitions. [2020-12-22 08:15:04,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:15:04,176 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 360 [2020-12-22 08:15:04,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:04,245 INFO L225 Difference]: With dead ends: 18224 [2020-12-22 08:15:04,245 INFO L226 Difference]: Without dead ends: 11510 [2020-12-22 08:15:04,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:04,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11510 states. [2020-12-22 08:15:04,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11510 to 11508. [2020-12-22 08:15:04,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11508 states. [2020-12-22 08:15:05,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11508 states to 11508 states and 18574 transitions. [2020-12-22 08:15:05,025 INFO L78 Accepts]: Start accepts. Automaton has 11508 states and 18574 transitions. Word has length 360 [2020-12-22 08:15:05,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:05,025 INFO L481 AbstractCegarLoop]: Abstraction has 11508 states and 18574 transitions. [2020-12-22 08:15:05,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:15:05,026 INFO L276 IsEmpty]: Start isEmpty. Operand 11508 states and 18574 transitions. [2020-12-22 08:15:05,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-12-22 08:15:05,051 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:05,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:15:05,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:15:05,052 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:05,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:05,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1490393562, now seen corresponding path program 1 times [2020-12-22 08:15:05,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:05,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059443056] [2020-12-22 08:15:05,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:05,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:05,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059443056] [2020-12-22 08:15:05,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:05,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:15:05,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563646947] [2020-12-22 08:15:05,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:15:05,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:05,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:15:05,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:15:05,837 INFO L87 Difference]: Start difference. First operand 11508 states and 18574 transitions. Second operand 7 states. [2020-12-22 08:15:09,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:09,264 INFO L93 Difference]: Finished difference Result 45158 states and 75655 transitions. [2020-12-22 08:15:09,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 08:15:09,265 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 362 [2020-12-22 08:15:09,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:09,385 INFO L225 Difference]: With dead ends: 45158 [2020-12-22 08:15:09,385 INFO L226 Difference]: Without dead ends: 41748 [2020-12-22 08:15:09,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:15:09,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41748 states. [2020-12-22 08:15:10,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41748 to 16693. [2020-12-22 08:15:10,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16693 states. [2020-12-22 08:15:10,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16693 states to 16693 states and 27222 transitions. [2020-12-22 08:15:10,984 INFO L78 Accepts]: Start accepts. Automaton has 16693 states and 27222 transitions. Word has length 362 [2020-12-22 08:15:10,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:10,985 INFO L481 AbstractCegarLoop]: Abstraction has 16693 states and 27222 transitions. [2020-12-22 08:15:10,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:15:10,985 INFO L276 IsEmpty]: Start isEmpty. Operand 16693 states and 27222 transitions. [2020-12-22 08:15:11,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-12-22 08:15:11,014 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:11,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:15:11,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:15:11,015 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:11,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:11,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1780781460, now seen corresponding path program 1 times [2020-12-22 08:15:11,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:11,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200047087] [2020-12-22 08:15:11,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:11,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:11,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200047087] [2020-12-22 08:15:11,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:11,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:15:11,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139818108] [2020-12-22 08:15:11,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:15:11,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:11,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:15:11,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:15:11,465 INFO L87 Difference]: Start difference. First operand 16693 states and 27222 transitions. Second operand 4 states. [2020-12-22 08:15:13,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:13,489 INFO L93 Difference]: Finished difference Result 36125 states and 60041 transitions. [2020-12-22 08:15:13,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:15:13,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 363 [2020-12-22 08:15:13,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:13,563 INFO L225 Difference]: With dead ends: 36125 [2020-12-22 08:15:13,563 INFO L226 Difference]: Without dead ends: 29307 [2020-12-22 08:15:13,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:15:13,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29307 states. [2020-12-22 08:15:15,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29307 to 25238. [2020-12-22 08:15:15,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25238 states. [2020-12-22 08:15:15,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25238 states to 25238 states and 41534 transitions. [2020-12-22 08:15:15,454 INFO L78 Accepts]: Start accepts. Automaton has 25238 states and 41534 transitions. Word has length 363 [2020-12-22 08:15:15,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:15,454 INFO L481 AbstractCegarLoop]: Abstraction has 25238 states and 41534 transitions. [2020-12-22 08:15:15,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:15:15,455 INFO L276 IsEmpty]: Start isEmpty. Operand 25238 states and 41534 transitions. [2020-12-22 08:15:15,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-12-22 08:15:15,491 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:15,492 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:15:15,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:15:15,492 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:15,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:15,493 INFO L82 PathProgramCache]: Analyzing trace with hash 417004357, now seen corresponding path program 1 times [2020-12-22 08:15:15,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:15,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534325482] [2020-12-22 08:15:15,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:15,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:15,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534325482] [2020-12-22 08:15:15,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:15,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:15:15,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730682804] [2020-12-22 08:15:15,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:15:15,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:15,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:15:15,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:15:15,948 INFO L87 Difference]: Start difference. First operand 25238 states and 41534 transitions. Second operand 7 states. [2020-12-22 08:15:19,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:19,217 INFO L93 Difference]: Finished difference Result 57320 states and 95892 transitions. [2020-12-22 08:15:19,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:15:19,218 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 363 [2020-12-22 08:15:19,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:19,357 INFO L225 Difference]: With dead ends: 57320 [2020-12-22 08:15:19,357 INFO L226 Difference]: Without dead ends: 50518 [2020-12-22 08:15:19,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:15:19,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50518 states. [2020-12-22 08:15:21,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50518 to 32082. [2020-12-22 08:15:21,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32082 states. [2020-12-22 08:15:21,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32082 states to 32082 states and 53066 transitions. [2020-12-22 08:15:21,742 INFO L78 Accepts]: Start accepts. Automaton has 32082 states and 53066 transitions. Word has length 363 [2020-12-22 08:15:21,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:21,743 INFO L481 AbstractCegarLoop]: Abstraction has 32082 states and 53066 transitions. [2020-12-22 08:15:21,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:15:21,744 INFO L276 IsEmpty]: Start isEmpty. Operand 32082 states and 53066 transitions. [2020-12-22 08:15:21,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-12-22 08:15:21,768 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:21,768 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:15:21,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:15:21,769 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:21,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:21,770 INFO L82 PathProgramCache]: Analyzing trace with hash 2104120285, now seen corresponding path program 1 times [2020-12-22 08:15:21,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:21,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392352687] [2020-12-22 08:15:21,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:22,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:22,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392352687] [2020-12-22 08:15:22,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:22,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:15:22,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052003421] [2020-12-22 08:15:22,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:15:22,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:22,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:15:22,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:15:22,605 INFO L87 Difference]: Start difference. First operand 32082 states and 53066 transitions. Second operand 7 states. [2020-12-22 08:15:26,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:26,710 INFO L93 Difference]: Finished difference Result 64164 states and 107424 transitions. [2020-12-22 08:15:26,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:15:26,711 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 364 [2020-12-22 08:15:26,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:26,937 INFO L225 Difference]: With dead ends: 64164 [2020-12-22 08:15:26,937 INFO L226 Difference]: Without dead ends: 57362 [2020-12-22 08:15:26,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:15:27,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57362 states. [2020-12-22 08:15:30,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57362 to 39696. [2020-12-22 08:15:30,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39696 states. [2020-12-22 08:15:30,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39696 states to 39696 states and 65874 transitions. [2020-12-22 08:15:30,230 INFO L78 Accepts]: Start accepts. Automaton has 39696 states and 65874 transitions. Word has length 364 [2020-12-22 08:15:30,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:30,231 INFO L481 AbstractCegarLoop]: Abstraction has 39696 states and 65874 transitions. [2020-12-22 08:15:30,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:15:30,231 INFO L276 IsEmpty]: Start isEmpty. Operand 39696 states and 65874 transitions. [2020-12-22 08:15:30,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-12-22 08:15:30,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:30,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:15:30,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:15:30,251 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:30,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:30,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1684483849, now seen corresponding path program 1 times [2020-12-22 08:15:30,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:30,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564104376] [2020-12-22 08:15:30,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:30,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:30,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564104376] [2020-12-22 08:15:30,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:30,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:15:30,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730198413] [2020-12-22 08:15:30,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:15:30,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:30,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:15:30,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:15:30,834 INFO L87 Difference]: Start difference. First operand 39696 states and 65874 transitions. Second operand 7 states. [2020-12-22 08:15:35,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:35,902 INFO L93 Difference]: Finished difference Result 71525 states and 119818 transitions. [2020-12-22 08:15:35,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:15:35,902 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 364 [2020-12-22 08:15:35,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:35,999 INFO L225 Difference]: With dead ends: 71525 [2020-12-22 08:15:36,000 INFO L226 Difference]: Without dead ends: 64723 [2020-12-22 08:15:36,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:15:36,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64723 states. [2020-12-22 08:15:40,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64723 to 47170. [2020-12-22 08:15:40,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47170 states. [2020-12-22 08:15:40,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47170 states to 47170 states and 78450 transitions. [2020-12-22 08:15:40,204 INFO L78 Accepts]: Start accepts. Automaton has 47170 states and 78450 transitions. Word has length 364 [2020-12-22 08:15:40,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:40,205 INFO L481 AbstractCegarLoop]: Abstraction has 47170 states and 78450 transitions. [2020-12-22 08:15:40,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:15:40,205 INFO L276 IsEmpty]: Start isEmpty. Operand 47170 states and 78450 transitions. [2020-12-22 08:15:40,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-12-22 08:15:40,221 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:40,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:15:40,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:15:40,222 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:40,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:40,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1850263349, now seen corresponding path program 1 times [2020-12-22 08:15:40,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:40,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634442688] [2020-12-22 08:15:40,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:40,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:40,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634442688] [2020-12-22 08:15:40,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:40,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:15:40,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590437916] [2020-12-22 08:15:40,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:15:40,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:40,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:15:40,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:15:40,664 INFO L87 Difference]: Start difference. First operand 47170 states and 78450 transitions. Second operand 7 states. [2020-12-22 08:15:46,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:46,754 INFO L93 Difference]: Finished difference Result 78559 states and 131678 transitions. [2020-12-22 08:15:46,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:15:46,755 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 364 [2020-12-22 08:15:46,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:46,846 INFO L225 Difference]: With dead ends: 78559 [2020-12-22 08:15:46,847 INFO L226 Difference]: Without dead ends: 71757 [2020-12-22 08:15:46,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:15:46,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71757 states. [2020-12-22 08:15:51,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71757 to 54364. [2020-12-22 08:15:51,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54364 states. [2020-12-22 08:15:51,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54364 states to 54364 states and 90562 transitions. [2020-12-22 08:15:51,416 INFO L78 Accepts]: Start accepts. Automaton has 54364 states and 90562 transitions. Word has length 364 [2020-12-22 08:15:51,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:51,416 INFO L481 AbstractCegarLoop]: Abstraction has 54364 states and 90562 transitions. [2020-12-22 08:15:51,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:15:51,416 INFO L276 IsEmpty]: Start isEmpty. Operand 54364 states and 90562 transitions. [2020-12-22 08:15:51,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-12-22 08:15:51,431 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:51,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:15:51,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:15:51,432 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:51,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:51,432 INFO L82 PathProgramCache]: Analyzing trace with hash -103434015, now seen corresponding path program 1 times [2020-12-22 08:15:51,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:51,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702852872] [2020-12-22 08:15:51,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:51,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:51,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702852872] [2020-12-22 08:15:51,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:51,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:15:51,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612981043] [2020-12-22 08:15:51,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:15:51,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:51,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:15:51,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:15:51,807 INFO L87 Difference]: Start difference. First operand 54364 states and 90562 transitions. Second operand 4 states. [2020-12-22 08:15:59,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:59,930 INFO L93 Difference]: Finished difference Result 138992 states and 233393 transitions. [2020-12-22 08:15:59,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:15:59,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 364 [2020-12-22 08:15:59,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:00,068 INFO L225 Difference]: With dead ends: 138992 [2020-12-22 08:16:00,068 INFO L226 Difference]: Without dead ends: 98190 [2020-12-22 08:16:00,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:16:00,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98190 states. [2020-12-22 08:16:07,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98190 to 90704. [2020-12-22 08:16:07,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90704 states. [2020-12-22 08:16:08,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90704 states to 90704 states and 151426 transitions. [2020-12-22 08:16:08,090 INFO L78 Accepts]: Start accepts. Automaton has 90704 states and 151426 transitions. Word has length 364 [2020-12-22 08:16:08,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:08,091 INFO L481 AbstractCegarLoop]: Abstraction has 90704 states and 151426 transitions. [2020-12-22 08:16:08,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:16:08,091 INFO L276 IsEmpty]: Start isEmpty. Operand 90704 states and 151426 transitions. [2020-12-22 08:16:08,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-12-22 08:16:08,116 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:08,117 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:16:08,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:16:08,117 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:08,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:08,118 INFO L82 PathProgramCache]: Analyzing trace with hash 359287251, now seen corresponding path program 1 times [2020-12-22 08:16:08,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:08,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129114272] [2020-12-22 08:16:08,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:08,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:16:08,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129114272] [2020-12-22 08:16:08,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:08,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:16:08,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531927536] [2020-12-22 08:16:08,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:16:08,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:08,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:16:08,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:16:08,728 INFO L87 Difference]: Start difference. First operand 90704 states and 151426 transitions. Second operand 4 states. [2020-12-22 08:16:23,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:23,136 INFO L93 Difference]: Finished difference Result 243161 states and 408139 transitions. [2020-12-22 08:16:23,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:16:23,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 365 [2020-12-22 08:16:23,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:23,617 INFO L225 Difference]: With dead ends: 243161 [2020-12-22 08:16:23,617 INFO L226 Difference]: Without dead ends: 168519 [2020-12-22 08:16:23,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:16:23,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168519 states. [2020-12-22 08:16:37,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168519 to 154125. [2020-12-22 08:16:37,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154125 states. [2020-12-22 08:16:38,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154125 states to 154125 states and 257424 transitions. [2020-12-22 08:16:38,214 INFO L78 Accepts]: Start accepts. Automaton has 154125 states and 257424 transitions. Word has length 365 [2020-12-22 08:16:38,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:38,214 INFO L481 AbstractCegarLoop]: Abstraction has 154125 states and 257424 transitions. [2020-12-22 08:16:38,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:16:38,215 INFO L276 IsEmpty]: Start isEmpty. Operand 154125 states and 257424 transitions. [2020-12-22 08:16:38,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-12-22 08:16:38,244 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:38,244 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:16:38,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:16:38,245 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:38,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:38,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1130734114, now seen corresponding path program 1 times [2020-12-22 08:16:38,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:38,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948154575] [2020-12-22 08:16:38,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:39,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:16:39,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948154575] [2020-12-22 08:16:39,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:39,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:16:39,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322290119] [2020-12-22 08:16:39,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:16:39,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:39,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:16:39,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:39,197 INFO L87 Difference]: Start difference. First operand 154125 states and 257424 transitions. Second operand 3 states. [2020-12-22 08:16:52,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:52,665 INFO L93 Difference]: Finished difference Result 300539 states and 502658 transitions. [2020-12-22 08:16:52,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:52,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 365 [2020-12-22 08:16:52,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:52,921 INFO L225 Difference]: With dead ends: 300539 [2020-12-22 08:16:52,921 INFO L226 Difference]: Without dead ends: 147834 [2020-12-22 08:16:53,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:53,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147834 states. [2020-12-22 08:17:06,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147834 to 147832. [2020-12-22 08:17:06,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147832 states. [2020-12-22 08:17:06,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147832 states to 147832 states and 246800 transitions. [2020-12-22 08:17:06,649 INFO L78 Accepts]: Start accepts. Automaton has 147832 states and 246800 transitions. Word has length 365 [2020-12-22 08:17:06,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:06,650 INFO L481 AbstractCegarLoop]: Abstraction has 147832 states and 246800 transitions. [2020-12-22 08:17:06,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:17:06,650 INFO L276 IsEmpty]: Start isEmpty. Operand 147832 states and 246800 transitions. [2020-12-22 08:17:06,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-12-22 08:17:06,666 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:06,666 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:06,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:17:06,667 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:06,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:06,667 INFO L82 PathProgramCache]: Analyzing trace with hash 596056497, now seen corresponding path program 1 times [2020-12-22 08:17:06,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:06,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230562559] [2020-12-22 08:17:06,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:07,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:07,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230562559] [2020-12-22 08:17:07,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:07,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:17:07,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702002310] [2020-12-22 08:17:07,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:17:07,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:07,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:17:07,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:17:07,532 INFO L87 Difference]: Start difference. First operand 147832 states and 246800 transitions. Second operand 7 states. [2020-12-22 08:17:07,770 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-22 08:17:29,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:29,145 INFO L93 Difference]: Finished difference Result 230650 states and 386358 transitions. [2020-12-22 08:17:29,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:17:29,146 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 368 [2020-12-22 08:17:29,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:29,895 INFO L225 Difference]: With dead ends: 230650 [2020-12-22 08:17:29,895 INFO L226 Difference]: Without dead ends: 217080 [2020-12-22 08:17:29,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:17:30,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217080 states.