/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:05:46,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:05:46,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:05:46,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:05:46,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:05:46,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:05:46,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:05:46,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:05:46,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:05:46,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:05:46,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:05:46,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:05:46,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:05:46,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:05:46,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:05:46,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:05:46,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:05:46,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:05:46,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:05:46,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:05:46,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:05:46,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:05:46,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:05:46,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:05:46,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:05:46,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:05:46,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:05:46,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:05:46,617 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:05:46,690 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:05:46,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:05:46,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:05:46,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:05:46,696 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:05:46,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:05:46,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:05:46,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:05:46,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:05:46,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:05:46,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:05:46,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:05:46,700 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:05:46,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:05:46,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:05:46,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:05:46,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:05:46,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:05:46,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:05:46,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:05:46,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:05:46,702 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:05:46,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:05:46,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:05:46,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:05:46,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:05:47,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:05:47,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:05:47,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:05:47,204 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:05:47,205 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:05:47,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-12-22 09:05:47,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d5196aea/bfa27b1e69c4463ab870ed83678b62b6/FLAG7963773f7 [2020-12-22 09:05:48,135 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:05:48,136 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-12-22 09:05:48,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d5196aea/bfa27b1e69c4463ab870ed83678b62b6/FLAG7963773f7 [2020-12-22 09:05:48,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d5196aea/bfa27b1e69c4463ab870ed83678b62b6 [2020-12-22 09:05:48,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:05:48,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:05:48,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:05:48,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:05:48,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:05:48,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:05:48" (1/1) ... [2020-12-22 09:05:48,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d4347b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:48, skipping insertion in model container [2020-12-22 09:05:48,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:05:48" (1/1) ... [2020-12-22 09:05:48,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:05:48,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:05:49,120 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[34485,34498] [2020-12-22 09:05:49,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:05:49,334 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:05:49,749 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[34485,34498] [2020-12-22 09:05:49,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:05:49,958 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:05:49,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:49 WrapperNode [2020-12-22 09:05:49,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:05:49,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:05:49,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:05:49,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:05:49,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:49" (1/1) ... [2020-12-22 09:05:50,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:49" (1/1) ... [2020-12-22 09:05:50,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:05:50,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:05:50,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:05:50,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:05:50,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:49" (1/1) ... [2020-12-22 09:05:50,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:49" (1/1) ... [2020-12-22 09:05:50,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:49" (1/1) ... [2020-12-22 09:05:50,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:49" (1/1) ... [2020-12-22 09:05:50,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:49" (1/1) ... [2020-12-22 09:05:50,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:49" (1/1) ... [2020-12-22 09:05:50,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:49" (1/1) ... [2020-12-22 09:05:50,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:05:50,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:05:50,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:05:50,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:05:50,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:05:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:05:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:05:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:05:50,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:05:53,335 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:05:53,335 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:05:53,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:05:53 BoogieIcfgContainer [2020-12-22 09:05:53,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:05:53,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:05:53,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:05:53,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:05:53,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:05:48" (1/3) ... [2020-12-22 09:05:53,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e19b52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:05:53, skipping insertion in model container [2020-12-22 09:05:53,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:05:49" (2/3) ... [2020-12-22 09:05:53,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e19b52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:05:53, skipping insertion in model container [2020-12-22 09:05:53,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:05:53" (3/3) ... [2020-12-22 09:05:53,349 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-12-22 09:05:53,357 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:05:53,363 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 09:05:53,386 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 09:05:53,424 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:05:53,424 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:05:53,424 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:05:53,425 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:05:53,425 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:05:53,425 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:05:53,425 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:05:53,425 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:05:53,460 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-12-22 09:05:53,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-12-22 09:05:53,490 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:53,492 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] [2020-12-22 09:05:53,492 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:53,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:53,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1694384253, now seen corresponding path program 1 times [2020-12-22 09:05:53,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:53,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260830883] [2020-12-22 09:05:53,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:54,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:05:54,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260830883] [2020-12-22 09:05:54,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:54,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:54,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568605515] [2020-12-22 09:05:54,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:54,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:54,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:54,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:54,701 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 3 states. [2020-12-22 09:05:55,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:55,092 INFO L93 Difference]: Finished difference Result 1471 states and 2590 transitions. [2020-12-22 09:05:55,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:55,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 308 [2020-12-22 09:05:55,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:55,151 INFO L225 Difference]: With dead ends: 1471 [2020-12-22 09:05:55,152 INFO L226 Difference]: Without dead ends: 1268 [2020-12-22 09:05:55,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:55,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2020-12-22 09:05:55,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1266. [2020-12-22 09:05:55,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1266 states. [2020-12-22 09:05:55,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1989 transitions. [2020-12-22 09:05:55,305 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1989 transitions. Word has length 308 [2020-12-22 09:05:55,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:55,307 INFO L481 AbstractCegarLoop]: Abstraction has 1266 states and 1989 transitions. [2020-12-22 09:05:55,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:55,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1989 transitions. [2020-12-22 09:05:55,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-12-22 09:05:55,315 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:55,315 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] [2020-12-22 09:05:55,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:05:55,316 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:55,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:55,317 INFO L82 PathProgramCache]: Analyzing trace with hash -919786699, now seen corresponding path program 1 times [2020-12-22 09:05:55,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:55,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130798920] [2020-12-22 09:05:55,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:55,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:05:55,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130798920] [2020-12-22 09:05:55,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:55,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:55,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481235951] [2020-12-22 09:05:55,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:55,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:55,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:55,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:55,858 INFO L87 Difference]: Start difference. First operand 1266 states and 1989 transitions. Second operand 3 states. [2020-12-22 09:05:56,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:56,121 INFO L93 Difference]: Finished difference Result 2596 states and 4102 transitions. [2020-12-22 09:05:56,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:56,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 308 [2020-12-22 09:05:56,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:56,140 INFO L225 Difference]: With dead ends: 2596 [2020-12-22 09:05:56,140 INFO L226 Difference]: Without dead ends: 2232 [2020-12-22 09:05:56,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:56,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2232 states. [2020-12-22 09:05:56,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2232 to 2230. [2020-12-22 09:05:56,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2230 states. [2020-12-22 09:05:56,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2230 states to 2230 states and 3491 transitions. [2020-12-22 09:05:56,264 INFO L78 Accepts]: Start accepts. Automaton has 2230 states and 3491 transitions. Word has length 308 [2020-12-22 09:05:56,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:56,266 INFO L481 AbstractCegarLoop]: Abstraction has 2230 states and 3491 transitions. [2020-12-22 09:05:56,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:56,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2230 states and 3491 transitions. [2020-12-22 09:05:56,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-12-22 09:05:56,276 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:56,276 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] [2020-12-22 09:05:56,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:05:56,277 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:56,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:56,279 INFO L82 PathProgramCache]: Analyzing trace with hash 508548576, now seen corresponding path program 1 times [2020-12-22 09:05:56,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:56,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806847158] [2020-12-22 09:05:56,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:56,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:05:56,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806847158] [2020-12-22 09:05:56,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:56,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:56,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968125912] [2020-12-22 09:05:56,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:56,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:56,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:56,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:56,840 INFO L87 Difference]: Start difference. First operand 2230 states and 3491 transitions. Second operand 3 states. [2020-12-22 09:05:57,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:57,311 INFO L93 Difference]: Finished difference Result 4726 states and 7445 transitions. [2020-12-22 09:05:57,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:57,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 308 [2020-12-22 09:05:57,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:57,339 INFO L225 Difference]: With dead ends: 4726 [2020-12-22 09:05:57,339 INFO L226 Difference]: Without dead ends: 4088 [2020-12-22 09:05:57,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:57,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4088 states. [2020-12-22 09:05:57,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4088 to 4086. [2020-12-22 09:05:57,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4086 states. [2020-12-22 09:05:57,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4086 states to 4086 states and 6371 transitions. [2020-12-22 09:05:57,566 INFO L78 Accepts]: Start accepts. Automaton has 4086 states and 6371 transitions. Word has length 308 [2020-12-22 09:05:57,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:57,574 INFO L481 AbstractCegarLoop]: Abstraction has 4086 states and 6371 transitions. [2020-12-22 09:05:57,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:57,575 INFO L276 IsEmpty]: Start isEmpty. Operand 4086 states and 6371 transitions. [2020-12-22 09:05:57,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-12-22 09:05:57,588 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:57,590 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] [2020-12-22 09:05:57,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:05:57,590 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:57,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:57,591 INFO L82 PathProgramCache]: Analyzing trace with hash 678875761, now seen corresponding path program 1 times [2020-12-22 09:05:57,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:57,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265208591] [2020-12-22 09:05:57,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:58,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:05:58,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265208591] [2020-12-22 09:05:58,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:58,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:05:58,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122984019] [2020-12-22 09:05:58,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:05:58,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:58,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:05:58,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:05:58,435 INFO L87 Difference]: Start difference. First operand 4086 states and 6371 transitions. Second operand 4 states. [2020-12-22 09:05:58,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:58,960 INFO L93 Difference]: Finished difference Result 12083 states and 18818 transitions. [2020-12-22 09:05:58,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:05:58,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 308 [2020-12-22 09:05:58,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:59,042 INFO L225 Difference]: With dead ends: 12083 [2020-12-22 09:05:59,042 INFO L226 Difference]: Without dead ends: 8008 [2020-12-22 09:05:59,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:05:59,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8008 states. [2020-12-22 09:05:59,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8008 to 8006. [2020-12-22 09:05:59,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8006 states. [2020-12-22 09:05:59,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8006 states to 8006 states and 12408 transitions. [2020-12-22 09:05:59,494 INFO L78 Accepts]: Start accepts. Automaton has 8006 states and 12408 transitions. Word has length 308 [2020-12-22 09:05:59,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:59,495 INFO L481 AbstractCegarLoop]: Abstraction has 8006 states and 12408 transitions. [2020-12-22 09:05:59,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:05:59,495 INFO L276 IsEmpty]: Start isEmpty. Operand 8006 states and 12408 transitions. [2020-12-22 09:05:59,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-12-22 09:05:59,514 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:59,515 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] [2020-12-22 09:05:59,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:05:59,515 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:05:59,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:59,516 INFO L82 PathProgramCache]: Analyzing trace with hash -2007211620, now seen corresponding path program 1 times [2020-12-22 09:05:59,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:59,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827543052] [2020-12-22 09:05:59,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:59,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:05:59,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827543052] [2020-12-22 09:05:59,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:59,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:59,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236806059] [2020-12-22 09:05:59,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:59,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:59,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:59,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:59,731 INFO L87 Difference]: Start difference. First operand 8006 states and 12408 transitions. Second operand 3 states. [2020-12-22 09:06:00,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:00,538 INFO L93 Difference]: Finished difference Result 23981 states and 37161 transitions. [2020-12-22 09:06:00,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:06:00,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 310 [2020-12-22 09:06:00,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:00,635 INFO L225 Difference]: With dead ends: 23981 [2020-12-22 09:06:00,636 INFO L226 Difference]: Without dead ends: 15996 [2020-12-22 09:06:00,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:00,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15996 states. [2020-12-22 09:06:01,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15996 to 8019. [2020-12-22 09:06:01,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8019 states. [2020-12-22 09:06:01,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8019 states to 8019 states and 12427 transitions. [2020-12-22 09:06:01,312 INFO L78 Accepts]: Start accepts. Automaton has 8019 states and 12427 transitions. Word has length 310 [2020-12-22 09:06:01,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:01,312 INFO L481 AbstractCegarLoop]: Abstraction has 8019 states and 12427 transitions. [2020-12-22 09:06:01,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:06:01,312 INFO L276 IsEmpty]: Start isEmpty. Operand 8019 states and 12427 transitions. [2020-12-22 09:06:01,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-12-22 09:06:01,330 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:01,330 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] [2020-12-22 09:06:01,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:06:01,330 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:01,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:01,331 INFO L82 PathProgramCache]: Analyzing trace with hash 581744279, now seen corresponding path program 1 times [2020-12-22 09:06:01,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:01,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407279217] [2020-12-22 09:06:01,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:01,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:06:01,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407279217] [2020-12-22 09:06:01,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:01,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:06:01,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897066876] [2020-12-22 09:06:01,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:06:01,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:01,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:06:01,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:01,675 INFO L87 Difference]: Start difference. First operand 8019 states and 12427 transitions. Second operand 3 states. [2020-12-22 09:06:02,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:02,640 INFO L93 Difference]: Finished difference Result 23594 states and 36496 transitions. [2020-12-22 09:06:02,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:06:02,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 310 [2020-12-22 09:06:02,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:02,677 INFO L225 Difference]: With dead ends: 23594 [2020-12-22 09:06:02,677 INFO L226 Difference]: Without dead ends: 15713 [2020-12-22 09:06:02,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:02,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15713 states. [2020-12-22 09:06:03,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15713 to 15711. [2020-12-22 09:06:03,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15711 states. [2020-12-22 09:06:03,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15711 states to 15711 states and 24201 transitions. [2020-12-22 09:06:03,726 INFO L78 Accepts]: Start accepts. Automaton has 15711 states and 24201 transitions. Word has length 310 [2020-12-22 09:06:03,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:03,726 INFO L481 AbstractCegarLoop]: Abstraction has 15711 states and 24201 transitions. [2020-12-22 09:06:03,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:06:03,726 INFO L276 IsEmpty]: Start isEmpty. Operand 15711 states and 24201 transitions. [2020-12-22 09:06:03,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-12-22 09:06:03,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:03,755 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] [2020-12-22 09:06:03,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:06:03,756 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:03,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:03,762 INFO L82 PathProgramCache]: Analyzing trace with hash 710479745, now seen corresponding path program 1 times [2020-12-22 09:06:03,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:03,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889578430] [2020-12-22 09:06:03,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:04,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:06:04,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889578430] [2020-12-22 09:06:04,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:04,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:06:04,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962266186] [2020-12-22 09:06:04,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:06:04,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:04,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:06:04,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:04,008 INFO L87 Difference]: Start difference. First operand 15711 states and 24201 transitions. Second operand 3 states. [2020-12-22 09:06:05,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:05,860 INFO L93 Difference]: Finished difference Result 47028 states and 72424 transitions. [2020-12-22 09:06:05,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:06:05,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 311 [2020-12-22 09:06:05,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:05,936 INFO L225 Difference]: With dead ends: 47028 [2020-12-22 09:06:05,936 INFO L226 Difference]: Without dead ends: 31373 [2020-12-22 09:06:05,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:06,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31373 states. [2020-12-22 09:06:07,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31373 to 15729. [2020-12-22 09:06:07,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15729 states. [2020-12-22 09:06:07,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15729 states to 15729 states and 24222 transitions. [2020-12-22 09:06:07,178 INFO L78 Accepts]: Start accepts. Automaton has 15729 states and 24222 transitions. Word has length 311 [2020-12-22 09:06:07,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:07,178 INFO L481 AbstractCegarLoop]: Abstraction has 15729 states and 24222 transitions. [2020-12-22 09:06:07,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:06:07,178 INFO L276 IsEmpty]: Start isEmpty. Operand 15729 states and 24222 transitions. [2020-12-22 09:06:07,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-12-22 09:06:07,205 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:07,206 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] [2020-12-22 09:06:07,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:06:07,206 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:07,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:07,207 INFO L82 PathProgramCache]: Analyzing trace with hash -548992078, now seen corresponding path program 1 times [2020-12-22 09:06:07,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:07,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209628978] [2020-12-22 09:06:07,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:07,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:06:07,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209628978] [2020-12-22 09:06:07,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:07,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:06:07,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048173170] [2020-12-22 09:06:07,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:06:07,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:07,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:06:07,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:07,587 INFO L87 Difference]: Start difference. First operand 15729 states and 24222 transitions. Second operand 3 states. [2020-12-22 09:06:09,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:09,306 INFO L93 Difference]: Finished difference Result 44554 states and 68467 transitions. [2020-12-22 09:06:09,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:06:09,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 312 [2020-12-22 09:06:09,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:09,378 INFO L225 Difference]: With dead ends: 44554 [2020-12-22 09:06:09,379 INFO L226 Difference]: Without dead ends: 29066 [2020-12-22 09:06:09,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:09,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29066 states. [2020-12-22 09:06:11,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29066 to 29064. [2020-12-22 09:06:11,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29064 states. [2020-12-22 09:06:11,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29064 states to 29064 states and 44438 transitions. [2020-12-22 09:06:11,180 INFO L78 Accepts]: Start accepts. Automaton has 29064 states and 44438 transitions. Word has length 312 [2020-12-22 09:06:11,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:11,181 INFO L481 AbstractCegarLoop]: Abstraction has 29064 states and 44438 transitions. [2020-12-22 09:06:11,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:06:11,181 INFO L276 IsEmpty]: Start isEmpty. Operand 29064 states and 44438 transitions. [2020-12-22 09:06:11,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-12-22 09:06:11,231 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:11,231 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] [2020-12-22 09:06:11,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:06:11,232 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:11,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:11,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1480696305, now seen corresponding path program 1 times [2020-12-22 09:06:11,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:11,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777481420] [2020-12-22 09:06:11,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:11,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:06:11,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777481420] [2020-12-22 09:06:11,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:11,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:06:11,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087514984] [2020-12-22 09:06:11,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:06:11,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:11,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:06:11,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:06:11,929 INFO L87 Difference]: Start difference. First operand 29064 states and 44438 transitions. Second operand 5 states. [2020-12-22 09:06:14,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:14,512 INFO L93 Difference]: Finished difference Result 85720 states and 130855 transitions. [2020-12-22 09:06:14,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:06:14,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2020-12-22 09:06:14,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:14,645 INFO L225 Difference]: With dead ends: 85720 [2020-12-22 09:06:14,646 INFO L226 Difference]: Without dead ends: 56711 [2020-12-22 09:06:14,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:06:14,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56711 states. [2020-12-22 09:06:17,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56711 to 56709. [2020-12-22 09:06:17,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56709 states. [2020-12-22 09:06:17,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56709 states to 56709 states and 86067 transitions. [2020-12-22 09:06:17,994 INFO L78 Accepts]: Start accepts. Automaton has 56709 states and 86067 transitions. Word has length 312 [2020-12-22 09:06:17,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:17,994 INFO L481 AbstractCegarLoop]: Abstraction has 56709 states and 86067 transitions. [2020-12-22 09:06:17,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:06:17,994 INFO L276 IsEmpty]: Start isEmpty. Operand 56709 states and 86067 transitions. [2020-12-22 09:06:18,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-12-22 09:06:18,127 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:18,127 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] [2020-12-22 09:06:18,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:06:18,128 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:18,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:18,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1121733143, now seen corresponding path program 1 times [2020-12-22 09:06:18,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:18,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707985679] [2020-12-22 09:06:18,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:18,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:06:18,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707985679] [2020-12-22 09:06:18,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:18,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:06:18,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498637215] [2020-12-22 09:06:18,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:06:18,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:18,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:06:18,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:06:18,915 INFO L87 Difference]: Start difference. First operand 56709 states and 86067 transitions. Second operand 4 states. [2020-12-22 09:06:24,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:24,045 INFO L93 Difference]: Finished difference Result 167453 states and 253749 transitions. [2020-12-22 09:06:24,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:06:24,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 314 [2020-12-22 09:06:24,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:24,299 INFO L225 Difference]: With dead ends: 167453 [2020-12-22 09:06:24,299 INFO L226 Difference]: Without dead ends: 110941 [2020-12-22 09:06:24,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:06:24,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110941 states. [2020-12-22 09:06:29,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110941 to 110939. [2020-12-22 09:06:29,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110939 states. [2020-12-22 09:06:30,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110939 states to 110939 states and 167172 transitions. [2020-12-22 09:06:30,177 INFO L78 Accepts]: Start accepts. Automaton has 110939 states and 167172 transitions. Word has length 314 [2020-12-22 09:06:30,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:30,177 INFO L481 AbstractCegarLoop]: Abstraction has 110939 states and 167172 transitions. [2020-12-22 09:06:30,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:06:30,177 INFO L276 IsEmpty]: Start isEmpty. Operand 110939 states and 167172 transitions. [2020-12-22 09:06:30,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-12-22 09:06:30,288 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:30,288 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] [2020-12-22 09:06:30,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:06:30,289 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:30,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:30,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1709461190, now seen corresponding path program 1 times [2020-12-22 09:06:30,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:30,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940584433] [2020-12-22 09:06:30,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:30,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:06:30,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940584433] [2020-12-22 09:06:30,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:30,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:06:30,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206399521] [2020-12-22 09:06:30,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:06:30,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:30,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:06:30,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:30,770 INFO L87 Difference]: Start difference. First operand 110939 states and 167172 transitions. Second operand 3 states. [2020-12-22 09:06:39,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:39,497 INFO L93 Difference]: Finished difference Result 327177 states and 492076 transitions. [2020-12-22 09:06:39,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:06:39,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 316 [2020-12-22 09:06:39,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:40,142 INFO L225 Difference]: With dead ends: 327177 [2020-12-22 09:06:40,143 INFO L226 Difference]: Without dead ends: 217131 [2020-12-22 09:06:40,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:40,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217131 states. [2020-12-22 09:06:50,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217131 to 217129. [2020-12-22 09:06:50,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217129 states. [2020-12-22 09:06:51,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217129 states to 217129 states and 324826 transitions. [2020-12-22 09:06:51,198 INFO L78 Accepts]: Start accepts. Automaton has 217129 states and 324826 transitions. Word has length 316 [2020-12-22 09:06:51,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:51,199 INFO L481 AbstractCegarLoop]: Abstraction has 217129 states and 324826 transitions. [2020-12-22 09:06:51,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:06:51,199 INFO L276 IsEmpty]: Start isEmpty. Operand 217129 states and 324826 transitions. [2020-12-22 09:06:51,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-12-22 09:06:51,360 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:51,361 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] [2020-12-22 09:06:51,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:06:51,361 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:51,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:51,362 INFO L82 PathProgramCache]: Analyzing trace with hash -2023890549, now seen corresponding path program 1 times [2020-12-22 09:06:51,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:51,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216302582] [2020-12-22 09:06:51,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:06:51,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216302582] [2020-12-22 09:06:51,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:51,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:06:51,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102007506] [2020-12-22 09:06:51,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:06:51,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:51,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:06:51,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:51,952 INFO L87 Difference]: Start difference. First operand 217129 states and 324826 transitions. Second operand 3 states. [2020-12-22 09:07:09,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:09,250 INFO L93 Difference]: Finished difference Result 650591 states and 973172 transitions. [2020-12-22 09:07:09,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:07:09,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 316 [2020-12-22 09:07:09,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:10,001 INFO L225 Difference]: With dead ends: 650591 [2020-12-22 09:07:10,001 INFO L226 Difference]: Without dead ends: 433905 [2020-12-22 09:07:10,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:10,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433905 states. [2020-12-22 09:07:24,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433905 to 217319. [2020-12-22 09:07:24,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217319 states. [2020-12-22 09:07:25,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217319 states to 217319 states and 325106 transitions. [2020-12-22 09:07:25,544 INFO L78 Accepts]: Start accepts. Automaton has 217319 states and 325106 transitions. Word has length 316 [2020-12-22 09:07:25,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:25,544 INFO L481 AbstractCegarLoop]: Abstraction has 217319 states and 325106 transitions. [2020-12-22 09:07:25,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:07:25,545 INFO L276 IsEmpty]: Start isEmpty. Operand 217319 states and 325106 transitions. [2020-12-22 09:07:25,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-12-22 09:07:25,687 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:25,688 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] [2020-12-22 09:07:25,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:07:25,688 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:25,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:25,688 INFO L82 PathProgramCache]: Analyzing trace with hash -978047316, now seen corresponding path program 1 times [2020-12-22 09:07:25,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:25,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487706064] [2020-12-22 09:07:25,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:25,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:07:25,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487706064] [2020-12-22 09:07:25,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:25,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:07:25,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616472101] [2020-12-22 09:07:25,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:07:25,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:25,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:07:25,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:25,836 INFO L87 Difference]: Start difference. First operand 217319 states and 325106 transitions. Second operand 3 states. [2020-12-22 09:07:46,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:46,067 INFO L93 Difference]: Finished difference Result 650703 states and 973250 transitions. [2020-12-22 09:07:46,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:07:46,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 317 [2020-12-22 09:07:46,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:46,921 INFO L225 Difference]: With dead ends: 650703 [2020-12-22 09:07:46,921 INFO L226 Difference]: Without dead ends: 434067 [2020-12-22 09:07:47,254 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