/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.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:12:18,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:12:18,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:12:18,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:12:18,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:12:18,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:12:18,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:12:18,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:12:18,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:12:18,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:12:18,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:12:18,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:12:18,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:12:18,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:12:18,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:12:18,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:12:18,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:12:18,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:12:18,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:12:18,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:12:18,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:12:18,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:12:18,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:12:18,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:12:18,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:12:18,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:12:18,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:12:18,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:12:18,424 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:12:18,477 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:12:18,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:12:18,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:12:18,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:12:18,482 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:12:18,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:12:18,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:12:18,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:12:18,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:12:18,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:12:18,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:12:18,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:12:18,485 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:12:18,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:12:18,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:12:18,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:12:18,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:12:18,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:12:18,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:12:18,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:12:18,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:12:18,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:12:18,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:12:18,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:12:18,488 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:12:18,488 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:12:18,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:12:18,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:12:18,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:12:18,959 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:12:18,960 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:12:18,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-12-22 08:12:19,030 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e97829937/34f4bbe7f5654f7b938093c4da92e635/FLAGa4fad2317 [2020-12-22 08:12:19,913 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:12:19,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-12-22 08:12:19,956 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e97829937/34f4bbe7f5654f7b938093c4da92e635/FLAGa4fad2317 [2020-12-22 08:12:19,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e97829937/34f4bbe7f5654f7b938093c4da92e635 [2020-12-22 08:12:20,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:12:20,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:12:20,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:12:20,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:12:20,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:12:20,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:12:20" (1/1) ... [2020-12-22 08:12:20,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b37b33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:20, skipping insertion in model container [2020-12-22 08:12:20,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:12:20" (1/1) ... [2020-12-22 08:12:20,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:12:20,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:12:21,063 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.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[35706,35719] [2020-12-22 08:12:21,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:12:21,447 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:12:21,838 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.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[35706,35719] [2020-12-22 08:12:22,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:12:22,127 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:12:22,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:22 WrapperNode [2020-12-22 08:12:22,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:12:22,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:12:22,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:12:22,130 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:12:22,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:22" (1/1) ... [2020-12-22 08:12:22,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:22" (1/1) ... [2020-12-22 08:12:22,325 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:12:22,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:12:22,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:12:22,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:12:22,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:22" (1/1) ... [2020-12-22 08:12:22,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:22" (1/1) ... [2020-12-22 08:12:22,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:22" (1/1) ... [2020-12-22 08:12:22,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:22" (1/1) ... [2020-12-22 08:12:22,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:22" (1/1) ... [2020-12-22 08:12:22,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:22" (1/1) ... [2020-12-22 08:12:22,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:22" (1/1) ... [2020-12-22 08:12:22,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:12:22,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:12:22,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:12:22,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:12:22,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:22" (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 08:12:22,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:12:22,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:12:22,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:12:22,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:12:26,369 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:12:26,369 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:12:26,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:12:26 BoogieIcfgContainer [2020-12-22 08:12:26,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:12:26,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:12:26,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:12:26,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:12:26,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:12:20" (1/3) ... [2020-12-22 08:12:26,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f02d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:12:26, skipping insertion in model container [2020-12-22 08:12:26,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:22" (2/3) ... [2020-12-22 08:12:26,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f02d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:12:26, skipping insertion in model container [2020-12-22 08:12:26,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:12:26" (3/3) ... [2020-12-22 08:12:26,383 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-12-22 08:12:26,389 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:12:26,395 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:12:26,414 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:12:26,450 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:12:26,450 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:12:26,451 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:12:26,451 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:12:26,451 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:12:26,451 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:12:26,451 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:12:26,451 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:12:26,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states. [2020-12-22 08:12:26,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-12-22 08:12:26,528 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:26,530 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] [2020-12-22 08:12:26,531 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:26,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:26,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1290073706, now seen corresponding path program 1 times [2020-12-22 08:12:26,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:26,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704227081] [2020-12-22 08:12:26,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:27,460 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 08:12:27,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704227081] [2020-12-22 08:12:27,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:27,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:12:27,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779209143] [2020-12-22 08:12:27,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:12:27,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:27,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:12:27,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:12:27,493 INFO L87 Difference]: Start difference. First operand 1414 states. Second operand 3 states. [2020-12-22 08:12:27,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:27,808 INFO L93 Difference]: Finished difference Result 2858 states and 5003 transitions. [2020-12-22 08:12:27,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:12:27,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 336 [2020-12-22 08:12:27,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:27,849 INFO L225 Difference]: With dead ends: 2858 [2020-12-22 08:12:27,849 INFO L226 Difference]: Without dead ends: 1985 [2020-12-22 08:12:27,861 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 08:12:27,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2020-12-22 08:12:28,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1983. [2020-12-22 08:12:28,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1983 states. [2020-12-22 08:12:28,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 3329 transitions. [2020-12-22 08:12:28,085 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 3329 transitions. Word has length 336 [2020-12-22 08:12:28,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:28,090 INFO L481 AbstractCegarLoop]: Abstraction has 1983 states and 3329 transitions. [2020-12-22 08:12:28,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:12:28,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 3329 transitions. [2020-12-22 08:12:28,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-12-22 08:12:28,104 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:28,105 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] [2020-12-22 08:12:28,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:12:28,106 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:28,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:28,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1240348038, now seen corresponding path program 1 times [2020-12-22 08:12:28,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:28,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370620881] [2020-12-22 08:12:28,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:28,685 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 08:12:28,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370620881] [2020-12-22 08:12:28,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:28,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:12:28,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168136754] [2020-12-22 08:12:28,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:12:28,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:28,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:12:28,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:12:28,693 INFO L87 Difference]: Start difference. First operand 1983 states and 3329 transitions. Second operand 3 states. [2020-12-22 08:12:28,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:28,909 INFO L93 Difference]: Finished difference Result 4390 states and 7266 transitions. [2020-12-22 08:12:28,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:12:28,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 338 [2020-12-22 08:12:28,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:28,939 INFO L225 Difference]: With dead ends: 4390 [2020-12-22 08:12:28,940 INFO L226 Difference]: Without dead ends: 2977 [2020-12-22 08:12:28,946 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 08:12:28,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2020-12-22 08:12:29,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 2975. [2020-12-22 08:12:29,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2975 states. [2020-12-22 08:12:29,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2975 states to 2975 states and 4944 transitions. [2020-12-22 08:12:29,147 INFO L78 Accepts]: Start accepts. Automaton has 2975 states and 4944 transitions. Word has length 338 [2020-12-22 08:12:29,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:29,150 INFO L481 AbstractCegarLoop]: Abstraction has 2975 states and 4944 transitions. [2020-12-22 08:12:29,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:12:29,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2975 states and 4944 transitions. [2020-12-22 08:12:29,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-12-22 08:12:29,170 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:29,171 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] [2020-12-22 08:12:29,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:12:29,172 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:29,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:29,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1875219914, now seen corresponding path program 1 times [2020-12-22 08:12:29,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:29,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229471271] [2020-12-22 08:12:29,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:29,741 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 08:12:29,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229471271] [2020-12-22 08:12:29,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:29,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:12:29,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951231684] [2020-12-22 08:12:29,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:12:29,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:29,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:12:29,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:12:29,748 INFO L87 Difference]: Start difference. First operand 2975 states and 4944 transitions. Second operand 3 states. [2020-12-22 08:12:30,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:30,022 INFO L93 Difference]: Finished difference Result 7030 states and 11558 transitions. [2020-12-22 08:12:30,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:12:30,023 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 340 [2020-12-22 08:12:30,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:30,051 INFO L225 Difference]: With dead ends: 7030 [2020-12-22 08:12:30,052 INFO L226 Difference]: Without dead ends: 4648 [2020-12-22 08:12:30,061 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 08:12:30,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4648 states. [2020-12-22 08:12:30,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4648 to 4646. [2020-12-22 08:12:30,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4646 states. [2020-12-22 08:12:30,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4646 states to 4646 states and 7650 transitions. [2020-12-22 08:12:30,328 INFO L78 Accepts]: Start accepts. Automaton has 4646 states and 7650 transitions. Word has length 340 [2020-12-22 08:12:30,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:30,335 INFO L481 AbstractCegarLoop]: Abstraction has 4646 states and 7650 transitions. [2020-12-22 08:12:30,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:12:30,335 INFO L276 IsEmpty]: Start isEmpty. Operand 4646 states and 7650 transitions. [2020-12-22 08:12:30,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-12-22 08:12:30,348 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:30,349 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] [2020-12-22 08:12:30,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:12:30,349 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:30,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:30,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1067101318, now seen corresponding path program 1 times [2020-12-22 08:12:30,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:30,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636062289] [2020-12-22 08:12:30,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:30,684 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 08:12:30,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636062289] [2020-12-22 08:12:30,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:30,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:12:30,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524940582] [2020-12-22 08:12:30,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:12:30,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:30,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:12:30,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:12:30,687 INFO L87 Difference]: Start difference. First operand 4646 states and 7650 transitions. Second operand 3 states. [2020-12-22 08:12:31,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:31,119 INFO L93 Difference]: Finished difference Result 11385 states and 18587 transitions. [2020-12-22 08:12:31,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:12:31,120 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 342 [2020-12-22 08:12:31,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:31,159 INFO L225 Difference]: With dead ends: 11385 [2020-12-22 08:12:31,159 INFO L226 Difference]: Without dead ends: 7355 [2020-12-22 08:12:31,166 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 08:12:31,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7355 states. [2020-12-22 08:12:31,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7355 to 7353. [2020-12-22 08:12:31,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7353 states. [2020-12-22 08:12:31,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7353 states to 7353 states and 11996 transitions. [2020-12-22 08:12:31,594 INFO L78 Accepts]: Start accepts. Automaton has 7353 states and 11996 transitions. Word has length 342 [2020-12-22 08:12:31,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:31,595 INFO L481 AbstractCegarLoop]: Abstraction has 7353 states and 11996 transitions. [2020-12-22 08:12:31,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:12:31,595 INFO L276 IsEmpty]: Start isEmpty. Operand 7353 states and 11996 transitions. [2020-12-22 08:12:31,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-12-22 08:12:31,618 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:31,618 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] [2020-12-22 08:12:31,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:12:31,618 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:31,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:31,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1671072770, now seen corresponding path program 1 times [2020-12-22 08:12:31,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:31,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448172049] [2020-12-22 08:12:31,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:32,014 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 08:12:32,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448172049] [2020-12-22 08:12:32,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:32,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:12:32,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201000568] [2020-12-22 08:12:32,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:12:32,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:32,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:12:32,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:12:32,019 INFO L87 Difference]: Start difference. First operand 7353 states and 11996 transitions. Second operand 3 states. [2020-12-22 08:12:32,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:32,745 INFO L93 Difference]: Finished difference Result 18204 states and 29464 transitions. [2020-12-22 08:12:32,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:12:32,747 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 344 [2020-12-22 08:12:32,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:32,813 INFO L225 Difference]: With dead ends: 18204 [2020-12-22 08:12:32,813 INFO L226 Difference]: Without dead ends: 11490 [2020-12-22 08:12:32,826 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 08:12:32,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11490 states. [2020-12-22 08:12:33,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11490 to 11488. [2020-12-22 08:12:33,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11488 states. [2020-12-22 08:12:33,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11488 states to 11488 states and 18538 transitions. [2020-12-22 08:12:33,381 INFO L78 Accepts]: Start accepts. Automaton has 11488 states and 18538 transitions. Word has length 344 [2020-12-22 08:12:33,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:33,381 INFO L481 AbstractCegarLoop]: Abstraction has 11488 states and 18538 transitions. [2020-12-22 08:12:33,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:12:33,382 INFO L276 IsEmpty]: Start isEmpty. Operand 11488 states and 18538 transitions. [2020-12-22 08:12:33,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-12-22 08:12:33,410 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:33,411 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] [2020-12-22 08:12:33,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:12:33,411 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:33,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:33,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1533396546, now seen corresponding path program 1 times [2020-12-22 08:12:33,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:33,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541930690] [2020-12-22 08:12:33,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:34,096 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 08:12:34,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541930690] [2020-12-22 08:12:34,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:34,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:12:34,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021942816] [2020-12-22 08:12:34,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:12:34,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:34,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:12:34,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:12:34,099 INFO L87 Difference]: Start difference. First operand 11488 states and 18538 transitions. Second operand 7 states. [2020-12-22 08:12:37,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:37,203 INFO L93 Difference]: Finished difference Result 45138 states and 75619 transitions. [2020-12-22 08:12:37,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 08:12:37,204 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 346 [2020-12-22 08:12:37,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:37,338 INFO L225 Difference]: With dead ends: 45138 [2020-12-22 08:12:37,338 INFO L226 Difference]: Without dead ends: 41728 [2020-12-22 08:12:37,359 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 08:12:37,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41728 states. [2020-12-22 08:12:38,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41728 to 16673. [2020-12-22 08:12:38,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16673 states. [2020-12-22 08:12:38,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16673 states to 16673 states and 27186 transitions. [2020-12-22 08:12:38,683 INFO L78 Accepts]: Start accepts. Automaton has 16673 states and 27186 transitions. Word has length 346 [2020-12-22 08:12:38,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:38,684 INFO L481 AbstractCegarLoop]: Abstraction has 16673 states and 27186 transitions. [2020-12-22 08:12:38,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:12:38,684 INFO L276 IsEmpty]: Start isEmpty. Operand 16673 states and 27186 transitions. [2020-12-22 08:12:38,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-12-22 08:12:38,713 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:38,713 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] [2020-12-22 08:12:38,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:12:38,714 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:38,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:38,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1028994356, now seen corresponding path program 1 times [2020-12-22 08:12:38,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:38,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460062770] [2020-12-22 08:12:38,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:39,207 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 08:12:39,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460062770] [2020-12-22 08:12:39,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:39,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:12:39,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213999432] [2020-12-22 08:12:39,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:12:39,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:39,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:12:39,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:12:39,210 INFO L87 Difference]: Start difference. First operand 16673 states and 27186 transitions. Second operand 4 states. [2020-12-22 08:12:40,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:40,675 INFO L93 Difference]: Finished difference Result 36105 states and 60005 transitions. [2020-12-22 08:12:40,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:12:40,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 347 [2020-12-22 08:12:40,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:40,751 INFO L225 Difference]: With dead ends: 36105 [2020-12-22 08:12:40,751 INFO L226 Difference]: Without dead ends: 29287 [2020-12-22 08:12:40,769 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 08:12:40,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29287 states. [2020-12-22 08:12:42,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29287 to 25218. [2020-12-22 08:12:42,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25218 states. [2020-12-22 08:12:42,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25218 states to 25218 states and 41498 transitions. [2020-12-22 08:12:42,304 INFO L78 Accepts]: Start accepts. Automaton has 25218 states and 41498 transitions. Word has length 347 [2020-12-22 08:12:42,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:42,305 INFO L481 AbstractCegarLoop]: Abstraction has 25218 states and 41498 transitions. [2020-12-22 08:12:42,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:12:42,305 INFO L276 IsEmpty]: Start isEmpty. Operand 25218 states and 41498 transitions. [2020-12-22 08:12:42,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-12-22 08:12:42,335 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:42,335 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] [2020-12-22 08:12:42,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:12:42,336 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:42,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:42,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1550806005, now seen corresponding path program 1 times [2020-12-22 08:12:42,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:42,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672964326] [2020-12-22 08:12:42,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:42,812 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 08:12:42,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672964326] [2020-12-22 08:12:42,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:42,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:12:42,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767863675] [2020-12-22 08:12:42,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:12:42,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:42,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:12:42,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:12:42,814 INFO L87 Difference]: Start difference. First operand 25218 states and 41498 transitions. Second operand 7 states. [2020-12-22 08:12:45,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:45,975 INFO L93 Difference]: Finished difference Result 57300 states and 95856 transitions. [2020-12-22 08:12:45,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:12:45,976 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 347 [2020-12-22 08:12:45,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:46,077 INFO L225 Difference]: With dead ends: 57300 [2020-12-22 08:12:46,078 INFO L226 Difference]: Without dead ends: 50498 [2020-12-22 08:12:46,101 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 08:12:46,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50498 states. [2020-12-22 08:12:48,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50498 to 32062. [2020-12-22 08:12:48,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32062 states. [2020-12-22 08:12:48,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32062 states to 32062 states and 53030 transitions. [2020-12-22 08:12:48,392 INFO L78 Accepts]: Start accepts. Automaton has 32062 states and 53030 transitions. Word has length 347 [2020-12-22 08:12:48,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:48,393 INFO L481 AbstractCegarLoop]: Abstraction has 32062 states and 53030 transitions. [2020-12-22 08:12:48,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:12:48,393 INFO L276 IsEmpty]: Start isEmpty. Operand 32062 states and 53030 transitions. [2020-12-22 08:12:48,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-12-22 08:12:48,425 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:48,425 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] [2020-12-22 08:12:48,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:12:48,426 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:48,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:48,426 INFO L82 PathProgramCache]: Analyzing trace with hash -360283327, now seen corresponding path program 1 times [2020-12-22 08:12:48,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:48,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405556848] [2020-12-22 08:12:48,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:48,998 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 08:12:48,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405556848] [2020-12-22 08:12:48,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:48,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:12:48,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764088551] [2020-12-22 08:12:49,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:12:49,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:49,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:12:49,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:12:49,001 INFO L87 Difference]: Start difference. First operand 32062 states and 53030 transitions. Second operand 7 states. [2020-12-22 08:12:52,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:52,957 INFO L93 Difference]: Finished difference Result 64144 states and 107388 transitions. [2020-12-22 08:12:52,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:12:52,958 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 348 [2020-12-22 08:12:52,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:53,039 INFO L225 Difference]: With dead ends: 64144 [2020-12-22 08:12:53,039 INFO L226 Difference]: Without dead ends: 57342 [2020-12-22 08:12:53,060 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 08:12:53,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57342 states. [2020-12-22 08:12:55,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57342 to 39676. [2020-12-22 08:12:55,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39676 states. [2020-12-22 08:12:56,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39676 states to 39676 states and 65838 transitions. [2020-12-22 08:12:56,064 INFO L78 Accepts]: Start accepts. Automaton has 39676 states and 65838 transitions. Word has length 348 [2020-12-22 08:12:56,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:56,065 INFO L481 AbstractCegarLoop]: Abstraction has 39676 states and 65838 transitions. [2020-12-22 08:12:56,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:12:56,065 INFO L276 IsEmpty]: Start isEmpty. Operand 39676 states and 65838 transitions. [2020-12-22 08:12:56,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-12-22 08:12:56,086 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:56,086 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] [2020-12-22 08:12:56,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:12:56,087 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:56,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:56,087 INFO L82 PathProgramCache]: Analyzing trace with hash -779919763, now seen corresponding path program 1 times [2020-12-22 08:12:56,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:56,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426546238] [2020-12-22 08:12:56,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:56,579 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 08:12:56,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426546238] [2020-12-22 08:12:56,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:56,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:12:56,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171263669] [2020-12-22 08:12:56,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:12:56,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:56,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:12:56,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:12:56,582 INFO L87 Difference]: Start difference. First operand 39676 states and 65838 transitions. Second operand 7 states. [2020-12-22 08:13:01,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:13:01,535 INFO L93 Difference]: Finished difference Result 71505 states and 119782 transitions. [2020-12-22 08:13:01,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:13:01,537 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 348 [2020-12-22 08:13:01,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:13:01,625 INFO L225 Difference]: With dead ends: 71505 [2020-12-22 08:13:01,626 INFO L226 Difference]: Without dead ends: 64703 [2020-12-22 08:13:01,650 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 08:13:01,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64703 states. [2020-12-22 08:13:05,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64703 to 47150. [2020-12-22 08:13:05,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47150 states. [2020-12-22 08:13:05,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47150 states to 47150 states and 78414 transitions. [2020-12-22 08:13:05,589 INFO L78 Accepts]: Start accepts. Automaton has 47150 states and 78414 transitions. Word has length 348 [2020-12-22 08:13:05,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:13:05,591 INFO L481 AbstractCegarLoop]: Abstraction has 47150 states and 78414 transitions. [2020-12-22 08:13:05,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:13:05,591 INFO L276 IsEmpty]: Start isEmpty. Operand 47150 states and 78414 transitions. [2020-12-22 08:13:05,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-12-22 08:13:05,609 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:13:05,610 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] [2020-12-22 08:13:05,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:13:05,610 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:13:05,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:13:05,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1727129669, now seen corresponding path program 1 times [2020-12-22 08:13:05,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:13:05,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591384568] [2020-12-22 08:13:05,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:13:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:13:05,938 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 08:13:05,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591384568] [2020-12-22 08:13:05,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:13:05,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:13:05,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314219910] [2020-12-22 08:13:05,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:13:05,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:13:05,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:13:05,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:13:05,941 INFO L87 Difference]: Start difference. First operand 47150 states and 78414 transitions. Second operand 4 states. [2020-12-22 08:13:12,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:13:12,361 INFO L93 Difference]: Finished difference Result 118092 states and 198137 transitions. [2020-12-22 08:13:12,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:13:12,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 348 [2020-12-22 08:13:12,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:13:12,478 INFO L225 Difference]: With dead ends: 118092 [2020-12-22 08:13:12,478 INFO L226 Difference]: Without dead ends: 84090 [2020-12-22 08:13:12,523 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 08:13:12,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84090 states. [2020-12-22 08:13:18,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84090 to 76562. [2020-12-22 08:13:18,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76562 states. [2020-12-22 08:13:18,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76562 states to 76562 states and 127666 transitions. [2020-12-22 08:13:18,804 INFO L78 Accepts]: Start accepts. Automaton has 76562 states and 127666 transitions. Word has length 348 [2020-12-22 08:13:18,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:13:18,805 INFO L481 AbstractCegarLoop]: Abstraction has 76562 states and 127666 transitions. [2020-12-22 08:13:18,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:13:18,805 INFO L276 IsEmpty]: Start isEmpty. Operand 76562 states and 127666 transitions. [2020-12-22 08:13:18,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-12-22 08:13:18,824 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:13:18,824 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] [2020-12-22 08:13:18,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:13:18,824 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:13:18,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:13:18,825 INFO L82 PathProgramCache]: Analyzing trace with hash -614140263, now seen corresponding path program 1 times [2020-12-22 08:13:18,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:13:18,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343412493] [2020-12-22 08:13:18,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:13:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:13:19,460 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 08:13:19,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343412493] [2020-12-22 08:13:19,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:13:19,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:13:19,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84666310] [2020-12-22 08:13:19,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:13:19,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:13:19,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:13:19,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:13:19,463 INFO L87 Difference]: Start difference. First operand 76562 states and 127666 transitions. Second operand 7 states. [2020-12-22 08:13:29,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:13:29,371 INFO L93 Difference]: Finished difference Result 131858 states and 221236 transitions. [2020-12-22 08:13:29,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:13:29,371 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 348 [2020-12-22 08:13:29,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:13:29,560 INFO L225 Difference]: With dead ends: 131858 [2020-12-22 08:13:29,560 INFO L226 Difference]: Without dead ends: 118288 [2020-12-22 08:13:29,603 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 08:13:29,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118288 states. [2020-12-22 08:13:37,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118288 to 90684. [2020-12-22 08:13:37,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90684 states. [2020-12-22 08:13:37,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90684 states to 90684 states and 151390 transitions. [2020-12-22 08:13:37,513 INFO L78 Accepts]: Start accepts. Automaton has 90684 states and 151390 transitions. Word has length 348 [2020-12-22 08:13:37,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:13:37,514 INFO L481 AbstractCegarLoop]: Abstraction has 90684 states and 151390 transitions. [2020-12-22 08:13:37,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:13:37,514 INFO L276 IsEmpty]: Start isEmpty. Operand 90684 states and 151390 transitions. [2020-12-22 08:13:37,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-12-22 08:13:37,540 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:13:37,541 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] [2020-12-22 08:13:37,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:13:37,541 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:13:37,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:13:37,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1758176533, now seen corresponding path program 1 times [2020-12-22 08:13:37,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:13:37,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277540893] [2020-12-22 08:13:37,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:13:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:13:38,349 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 08:13:38,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277540893] [2020-12-22 08:13:38,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:13:38,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:13:38,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931994062] [2020-12-22 08:13:38,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:13:38,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:13:38,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:13:38,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:13:38,352 INFO L87 Difference]: Start difference. First operand 90684 states and 151390 transitions. Second operand 7 states. [2020-12-22 08:13:50,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:13:50,335 INFO L93 Difference]: Finished difference Result 139468 states and 233976 transitions. [2020-12-22 08:13:50,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:13:50,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 348 [2020-12-22 08:13:50,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:13:50,531 INFO L225 Difference]: With dead ends: 139468 [2020-12-22 08:13:50,531 INFO L226 Difference]: Without dead ends: 132666 [2020-12-22 08:13:50,566 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 08:13:50,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132666 states. [2020-12-22 08:13:59,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132666 to 98298. [2020-12-22 08:13:59,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98298 states. [2020-12-22 08:13:59,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98298 states to 98298 states and 164198 transitions. [2020-12-22 08:13:59,952 INFO L78 Accepts]: Start accepts. Automaton has 98298 states and 164198 transitions. Word has length 348 [2020-12-22 08:13:59,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:13:59,953 INFO L481 AbstractCegarLoop]: Abstraction has 98298 states and 164198 transitions. [2020-12-22 08:13:59,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:13:59,953 INFO L276 IsEmpty]: Start isEmpty. Operand 98298 states and 164198 transitions. [2020-12-22 08:13:59,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-12-22 08:13:59,980 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:13:59,980 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] [2020-12-22 08:13:59,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:13:59,981 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:13:59,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:13:59,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1272186547, now seen corresponding path program 1 times [2020-12-22 08:13:59,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:13:59,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083907013] [2020-12-22 08:13:59,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:14:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:14:00,594 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 08:14:00,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083907013] [2020-12-22 08:14:00,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:14:00,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:14:00,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654915015] [2020-12-22 08:14:00,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:14:00,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:14:00,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:14:00,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:14:00,597 INFO L87 Difference]: Start difference. First operand 98298 states and 164198 transitions. Second operand 4 states. [2020-12-22 08:14:18,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:14:18,412 INFO L93 Difference]: Finished difference Result 264367 states and 443899 transitions. [2020-12-22 08:14:18,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:14:18,413 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 349 [2020-12-22 08:14:18,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:14:18,927 INFO L225 Difference]: With dead ends: 264367 [2020-12-22 08:14:18,928 INFO L226 Difference]: Without dead ends: 182925 [2020-12-22 08:14:19,049 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 08:14:19,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182925 states. [2020-12-22 08:14:35,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182925 to 168713. [2020-12-22 08:14:35,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168713 states. [2020-12-22 08:14:36,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168713 states to 168713 states and 281920 transitions. [2020-12-22 08:14:36,246 INFO L78 Accepts]: Start accepts. Automaton has 168713 states and 281920 transitions. Word has length 349 [2020-12-22 08:14:36,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:14:36,247 INFO L481 AbstractCegarLoop]: Abstraction has 168713 states and 281920 transitions. [2020-12-22 08:14:36,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:14:36,247 INFO L276 IsEmpty]: Start isEmpty. Operand 168713 states and 281920 transitions. [2020-12-22 08:14:36,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-12-22 08:14:36,273 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:14:36,273 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] [2020-12-22 08:14:36,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:14:36,274 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:14:36,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:14:36,274 INFO L82 PathProgramCache]: Analyzing trace with hash 2044249921, now seen corresponding path program 1 times [2020-12-22 08:14:36,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:14:36,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526088786] [2020-12-22 08:14:36,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:14:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:14:36,545 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 08:14:36,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526088786] [2020-12-22 08:14:36,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:14:36,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:14:36,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126497773] [2020-12-22 08:14:36,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:14:36,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:14:36,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:14:36,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:14:36,550 INFO L87 Difference]: Start difference. First operand 168713 states and 281920 transitions. Second operand 3 states.