./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/locks/test_locks_9.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/locks/test_locks_9.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 20a70402cc893fb2c7adec21ca8a267adc3c5cbb ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 19:39:18,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 19:39:18,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 19:39:18,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 19:39:18,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 19:39:18,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 19:39:18,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 19:39:18,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 19:39:18,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 19:39:18,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 19:39:18,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 19:39:18,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 19:39:18,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 19:39:18,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 19:39:18,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 19:39:18,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 19:39:18,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 19:39:18,908 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 19:39:18,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 19:39:18,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 19:39:18,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 19:39:18,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 19:39:18,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 19:39:18,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 19:39:18,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 19:39:18,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 19:39:18,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 19:39:18,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 19:39:18,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 19:39:18,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 19:39:18,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 19:39:18,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 19:39:18,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 19:39:18,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 19:39:18,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 19:39:18,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 19:39:18,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 19:39:18,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 19:39:18,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 19:39:18,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 19:39:18,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 19:39:18,956 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 19:39:19,008 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 19:39:19,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 19:39:19,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 19:39:19,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 19:39:19,012 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 19:39:19,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 19:39:19,013 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 19:39:19,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 19:39:19,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 19:39:19,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 19:39:19,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 19:39:19,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 19:39:19,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 19:39:19,015 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 19:39:19,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 19:39:19,015 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 19:39:19,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 19:39:19,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 19:39:19,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 19:39:19,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 19:39:19,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 19:39:19,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 19:39:19,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 19:39:19,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 19:39:19,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 19:39:19,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 19:39:19,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 19:39:19,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 19:39:19,018 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 19:39:19,018 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20a70402cc893fb2c7adec21ca8a267adc3c5cbb [2020-10-25 19:39:19,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 19:39:19,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 19:39:19,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 19:39:19,526 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 19:39:19,528 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 19:39:19,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_9.c [2020-10-25 19:39:19,624 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ce4695a0/4cf97569f49d4935ba4a8bbf7d3dc7f2/FLAG47a168332 [2020-10-25 19:39:20,422 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 19:39:20,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_9.c [2020-10-25 19:39:20,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ce4695a0/4cf97569f49d4935ba4a8bbf7d3dc7f2/FLAG47a168332 [2020-10-25 19:39:20,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ce4695a0/4cf97569f49d4935ba4a8bbf7d3dc7f2 [2020-10-25 19:39:20,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 19:39:20,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 19:39:20,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 19:39:20,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 19:39:20,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 19:39:20,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:39:20" (1/1) ... [2020-10-25 19:39:20,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69c8449e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:20, skipping insertion in model container [2020-10-25 19:39:20,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:39:20" (1/1) ... [2020-10-25 19:39:20,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 19:39:20,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 19:39:21,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:39:21,036 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 19:39:21,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:39:21,092 INFO L208 MainTranslator]: Completed translation [2020-10-25 19:39:21,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:21 WrapperNode [2020-10-25 19:39:21,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 19:39:21,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 19:39:21,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 19:39:21,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 19:39:21,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:21" (1/1) ... [2020-10-25 19:39:21,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:21" (1/1) ... [2020-10-25 19:39:21,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 19:39:21,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 19:39:21,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 19:39:21,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 19:39:21,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:21" (1/1) ... [2020-10-25 19:39:21,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:21" (1/1) ... [2020-10-25 19:39:21,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:21" (1/1) ... [2020-10-25 19:39:21,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:21" (1/1) ... [2020-10-25 19:39:21,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:21" (1/1) ... [2020-10-25 19:39:21,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:21" (1/1) ... [2020-10-25 19:39:21,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:21" (1/1) ... [2020-10-25 19:39:21,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 19:39:21,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 19:39:21,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 19:39:21,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 19:39:21,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:21" (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 [2020-10-25 19:39:21,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 19:39:21,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 19:39:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 19:39:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 19:39:22,003 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 19:39:22,004 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-25 19:39:22,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:39:22 BoogieIcfgContainer [2020-10-25 19:39:22,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 19:39:22,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 19:39:22,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 19:39:22,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 19:39:22,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 07:39:20" (1/3) ... [2020-10-25 19:39:22,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554f35a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:39:22, skipping insertion in model container [2020-10-25 19:39:22,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:21" (2/3) ... [2020-10-25 19:39:22,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554f35a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:39:22, skipping insertion in model container [2020-10-25 19:39:22,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:39:22" (3/3) ... [2020-10-25 19:39:22,019 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_9.c [2020-10-25 19:39:22,033 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 19:39:22,039 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 19:39:22,052 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 19:39:22,096 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 19:39:22,096 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 19:39:22,096 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 19:39:22,097 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 19:39:22,097 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 19:39:22,097 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 19:39:22,097 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 19:39:22,098 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 19:39:22,117 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-25 19:39:22,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 19:39:22,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:22,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:22,128 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:22,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:22,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1657621241, now seen corresponding path program 1 times [2020-10-25 19:39:22,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:22,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916613259] [2020-10-25 19:39:22,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:22,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:22,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916613259] [2020-10-25 19:39:22,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:22,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:22,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733295839] [2020-10-25 19:39:22,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:22,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:22,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:22,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:22,399 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-10-25 19:39:22,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:22,458 INFO L93 Difference]: Finished difference Result 78 states and 134 transitions. [2020-10-25 19:39:22,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:22,461 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-25 19:39:22,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:22,473 INFO L225 Difference]: With dead ends: 78 [2020-10-25 19:39:22,474 INFO L226 Difference]: Without dead ends: 63 [2020-10-25 19:39:22,477 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 [2020-10-25 19:39:22,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-25 19:39:22,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 43. [2020-10-25 19:39:22,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-25 19:39:22,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 78 transitions. [2020-10-25 19:39:22,523 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 78 transitions. Word has length 16 [2020-10-25 19:39:22,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:22,524 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 78 transitions. [2020-10-25 19:39:22,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:22,525 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 78 transitions. [2020-10-25 19:39:22,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 19:39:22,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:22,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:22,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 19:39:22,527 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:22,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:22,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1399455803, now seen corresponding path program 1 times [2020-10-25 19:39:22,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:22,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994870666] [2020-10-25 19:39:22,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:22,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:22,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994870666] [2020-10-25 19:39:22,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:22,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:22,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652236414] [2020-10-25 19:39:22,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:22,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:22,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:22,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:22,624 INFO L87 Difference]: Start difference. First operand 43 states and 78 transitions. Second operand 3 states. [2020-10-25 19:39:22,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:22,654 INFO L93 Difference]: Finished difference Result 104 states and 189 transitions. [2020-10-25 19:39:22,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:22,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-25 19:39:22,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:22,657 INFO L225 Difference]: With dead ends: 104 [2020-10-25 19:39:22,657 INFO L226 Difference]: Without dead ends: 63 [2020-10-25 19:39:22,658 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 [2020-10-25 19:39:22,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-25 19:39:22,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-10-25 19:39:22,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-25 19:39:22,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 110 transitions. [2020-10-25 19:39:22,668 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 110 transitions. Word has length 16 [2020-10-25 19:39:22,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:22,668 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 110 transitions. [2020-10-25 19:39:22,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:22,668 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 110 transitions. [2020-10-25 19:39:22,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 19:39:22,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:22,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:22,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 19:39:22,676 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:22,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:22,677 INFO L82 PathProgramCache]: Analyzing trace with hash 153562753, now seen corresponding path program 1 times [2020-10-25 19:39:22,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:22,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934771914] [2020-10-25 19:39:22,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:22,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:22,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934771914] [2020-10-25 19:39:22,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:22,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:22,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681556461] [2020-10-25 19:39:22,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:22,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:22,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:22,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:22,727 INFO L87 Difference]: Start difference. First operand 61 states and 110 transitions. Second operand 3 states. [2020-10-25 19:39:22,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:22,761 INFO L93 Difference]: Finished difference Result 96 states and 168 transitions. [2020-10-25 19:39:22,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:22,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-25 19:39:22,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:22,764 INFO L225 Difference]: With dead ends: 96 [2020-10-25 19:39:22,764 INFO L226 Difference]: Without dead ends: 66 [2020-10-25 19:39:22,765 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 [2020-10-25 19:39:22,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-25 19:39:22,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-25 19:39:22,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-25 19:39:22,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 112 transitions. [2020-10-25 19:39:22,774 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 112 transitions. Word has length 17 [2020-10-25 19:39:22,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:22,774 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 112 transitions. [2020-10-25 19:39:22,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:22,774 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 112 transitions. [2020-10-25 19:39:22,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 19:39:22,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:22,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:22,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 19:39:22,776 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:22,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:22,777 INFO L82 PathProgramCache]: Analyzing trace with hash -433243261, now seen corresponding path program 1 times [2020-10-25 19:39:22,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:22,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944745241] [2020-10-25 19:39:22,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:22,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:22,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944745241] [2020-10-25 19:39:22,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:22,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:22,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653467205] [2020-10-25 19:39:22,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:22,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:22,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:22,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:22,847 INFO L87 Difference]: Start difference. First operand 64 states and 112 transitions. Second operand 3 states. [2020-10-25 19:39:22,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:22,872 INFO L93 Difference]: Finished difference Result 121 states and 213 transitions. [2020-10-25 19:39:22,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:22,873 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-25 19:39:22,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:22,874 INFO L225 Difference]: With dead ends: 121 [2020-10-25 19:39:22,875 INFO L226 Difference]: Without dead ends: 119 [2020-10-25 19:39:22,875 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 [2020-10-25 19:39:22,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-25 19:39:22,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 85. [2020-10-25 19:39:22,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-25 19:39:22,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 149 transitions. [2020-10-25 19:39:22,887 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 149 transitions. Word has length 17 [2020-10-25 19:39:22,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:22,888 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 149 transitions. [2020-10-25 19:39:22,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:22,888 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 149 transitions. [2020-10-25 19:39:22,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 19:39:22,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:22,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:22,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 19:39:22,890 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:22,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:22,890 INFO L82 PathProgramCache]: Analyzing trace with hash -175077823, now seen corresponding path program 1 times [2020-10-25 19:39:22,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:22,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620621950] [2020-10-25 19:39:22,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:22,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:22,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620621950] [2020-10-25 19:39:22,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:22,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:22,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33550176] [2020-10-25 19:39:22,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:22,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:22,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:22,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:22,958 INFO L87 Difference]: Start difference. First operand 85 states and 149 transitions. Second operand 3 states. [2020-10-25 19:39:22,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:22,987 INFO L93 Difference]: Finished difference Result 201 states and 355 transitions. [2020-10-25 19:39:22,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:22,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-25 19:39:22,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:22,990 INFO L225 Difference]: With dead ends: 201 [2020-10-25 19:39:22,990 INFO L226 Difference]: Without dead ends: 121 [2020-10-25 19:39:22,991 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 [2020-10-25 19:39:22,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-25 19:39:23,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2020-10-25 19:39:23,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-25 19:39:23,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 207 transitions. [2020-10-25 19:39:23,006 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 207 transitions. Word has length 17 [2020-10-25 19:39:23,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:23,007 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 207 transitions. [2020-10-25 19:39:23,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:23,007 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 207 transitions. [2020-10-25 19:39:23,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-25 19:39:23,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:23,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:23,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-25 19:39:23,009 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:23,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:23,010 INFO L82 PathProgramCache]: Analyzing trace with hash -545425190, now seen corresponding path program 1 times [2020-10-25 19:39:23,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:23,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818815636] [2020-10-25 19:39:23,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:23,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:23,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818815636] [2020-10-25 19:39:23,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:23,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:23,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239013095] [2020-10-25 19:39:23,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:23,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:23,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:23,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:23,049 INFO L87 Difference]: Start difference. First operand 119 states and 207 transitions. Second operand 3 states. [2020-10-25 19:39:23,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:23,072 INFO L93 Difference]: Finished difference Result 180 states and 310 transitions. [2020-10-25 19:39:23,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:23,073 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-25 19:39:23,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:23,074 INFO L225 Difference]: With dead ends: 180 [2020-10-25 19:39:23,074 INFO L226 Difference]: Without dead ends: 123 [2020-10-25 19:39:23,075 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 [2020-10-25 19:39:23,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-25 19:39:23,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2020-10-25 19:39:23,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-25 19:39:23,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 207 transitions. [2020-10-25 19:39:23,087 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 207 transitions. Word has length 18 [2020-10-25 19:39:23,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:23,088 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 207 transitions. [2020-10-25 19:39:23,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:23,088 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 207 transitions. [2020-10-25 19:39:23,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-25 19:39:23,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:23,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:23,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-25 19:39:23,091 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:23,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:23,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1132231204, now seen corresponding path program 1 times [2020-10-25 19:39:23,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:23,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987402516] [2020-10-25 19:39:23,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:23,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:23,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987402516] [2020-10-25 19:39:23,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:23,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:23,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311497260] [2020-10-25 19:39:23,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:23,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:23,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:23,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:23,134 INFO L87 Difference]: Start difference. First operand 121 states and 207 transitions. Second operand 3 states. [2020-10-25 19:39:23,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:23,163 INFO L93 Difference]: Finished difference Result 345 states and 593 transitions. [2020-10-25 19:39:23,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:23,164 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-25 19:39:23,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:23,166 INFO L225 Difference]: With dead ends: 345 [2020-10-25 19:39:23,167 INFO L226 Difference]: Without dead ends: 231 [2020-10-25 19:39:23,168 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 [2020-10-25 19:39:23,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-25 19:39:23,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 229. [2020-10-25 19:39:23,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-25 19:39:23,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 387 transitions. [2020-10-25 19:39:23,188 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 387 transitions. Word has length 18 [2020-10-25 19:39:23,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:23,189 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 387 transitions. [2020-10-25 19:39:23,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:23,189 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 387 transitions. [2020-10-25 19:39:23,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-25 19:39:23,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:23,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:23,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-25 19:39:23,192 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:23,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:23,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1390396642, now seen corresponding path program 1 times [2020-10-25 19:39:23,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:23,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826189234] [2020-10-25 19:39:23,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:23,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826189234] [2020-10-25 19:39:23,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:23,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:23,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341592388] [2020-10-25 19:39:23,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:23,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:23,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:23,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:23,258 INFO L87 Difference]: Start difference. First operand 229 states and 387 transitions. Second operand 3 states. [2020-10-25 19:39:23,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:23,304 INFO L93 Difference]: Finished difference Result 289 states and 493 transitions. [2020-10-25 19:39:23,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:23,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-25 19:39:23,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:23,310 INFO L225 Difference]: With dead ends: 289 [2020-10-25 19:39:23,311 INFO L226 Difference]: Without dead ends: 287 [2020-10-25 19:39:23,312 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 [2020-10-25 19:39:23,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-25 19:39:23,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 229. [2020-10-25 19:39:23,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-25 19:39:23,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 383 transitions. [2020-10-25 19:39:23,350 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 383 transitions. Word has length 18 [2020-10-25 19:39:23,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:23,350 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 383 transitions. [2020-10-25 19:39:23,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:23,351 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 383 transitions. [2020-10-25 19:39:23,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-25 19:39:23,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:23,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:23,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-25 19:39:23,358 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:23,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:23,359 INFO L82 PathProgramCache]: Analyzing trace with hash -739214602, now seen corresponding path program 1 times [2020-10-25 19:39:23,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:23,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611596963] [2020-10-25 19:39:23,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:23,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:23,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611596963] [2020-10-25 19:39:23,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:23,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:23,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101545814] [2020-10-25 19:39:23,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:23,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:23,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:23,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:23,436 INFO L87 Difference]: Start difference. First operand 229 states and 383 transitions. Second operand 3 states. [2020-10-25 19:39:23,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:23,497 INFO L93 Difference]: Finished difference Result 421 states and 713 transitions. [2020-10-25 19:39:23,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:23,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-25 19:39:23,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:23,504 INFO L225 Difference]: With dead ends: 421 [2020-10-25 19:39:23,504 INFO L226 Difference]: Without dead ends: 419 [2020-10-25 19:39:23,506 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 [2020-10-25 19:39:23,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-10-25 19:39:23,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 321. [2020-10-25 19:39:23,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-10-25 19:39:23,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 527 transitions. [2020-10-25 19:39:23,526 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 527 transitions. Word has length 19 [2020-10-25 19:39:23,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:23,526 INFO L481 AbstractCegarLoop]: Abstraction has 321 states and 527 transitions. [2020-10-25 19:39:23,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:23,527 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 527 transitions. [2020-10-25 19:39:23,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-25 19:39:23,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:23,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:23,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-25 19:39:23,530 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:23,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:23,531 INFO L82 PathProgramCache]: Analyzing trace with hash -481049164, now seen corresponding path program 1 times [2020-10-25 19:39:23,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:23,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337573010] [2020-10-25 19:39:23,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:23,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:23,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337573010] [2020-10-25 19:39:23,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:23,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:23,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444985888] [2020-10-25 19:39:23,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:23,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:23,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:23,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:23,562 INFO L87 Difference]: Start difference. First operand 321 states and 527 transitions. Second operand 3 states. [2020-10-25 19:39:23,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:23,593 INFO L93 Difference]: Finished difference Result 757 states and 1249 transitions. [2020-10-25 19:39:23,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:23,594 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-25 19:39:23,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:23,597 INFO L225 Difference]: With dead ends: 757 [2020-10-25 19:39:23,598 INFO L226 Difference]: Without dead ends: 443 [2020-10-25 19:39:23,599 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 [2020-10-25 19:39:23,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-10-25 19:39:23,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 441. [2020-10-25 19:39:23,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-25 19:39:23,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 715 transitions. [2020-10-25 19:39:23,617 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 715 transitions. Word has length 19 [2020-10-25 19:39:23,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:23,618 INFO L481 AbstractCegarLoop]: Abstraction has 441 states and 715 transitions. [2020-10-25 19:39:23,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:23,618 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 715 transitions. [2020-10-25 19:39:23,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-25 19:39:23,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:23,621 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] [2020-10-25 19:39:23,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-25 19:39:23,622 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:23,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:23,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1440601487, now seen corresponding path program 1 times [2020-10-25 19:39:23,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:23,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415508516] [2020-10-25 19:39:23,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:23,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:23,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415508516] [2020-10-25 19:39:23,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:23,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:23,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982366401] [2020-10-25 19:39:23,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:23,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:23,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:23,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:23,710 INFO L87 Difference]: Start difference. First operand 441 states and 715 transitions. Second operand 3 states. [2020-10-25 19:39:23,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:23,759 INFO L93 Difference]: Finished difference Result 669 states and 1081 transitions. [2020-10-25 19:39:23,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:23,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-25 19:39:23,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:23,763 INFO L225 Difference]: With dead ends: 669 [2020-10-25 19:39:23,763 INFO L226 Difference]: Without dead ends: 455 [2020-10-25 19:39:23,765 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 [2020-10-25 19:39:23,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-10-25 19:39:23,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 453. [2020-10-25 19:39:23,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-10-25 19:39:23,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 723 transitions. [2020-10-25 19:39:23,788 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 723 transitions. Word has length 20 [2020-10-25 19:39:23,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:23,788 INFO L481 AbstractCegarLoop]: Abstraction has 453 states and 723 transitions. [2020-10-25 19:39:23,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:23,788 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 723 transitions. [2020-10-25 19:39:23,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-25 19:39:23,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:23,790 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] [2020-10-25 19:39:23,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-25 19:39:23,790 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:23,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:23,791 INFO L82 PathProgramCache]: Analyzing trace with hash -2027407501, now seen corresponding path program 1 times [2020-10-25 19:39:23,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:23,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642684420] [2020-10-25 19:39:23,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:23,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:23,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642684420] [2020-10-25 19:39:23,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:23,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:23,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054079624] [2020-10-25 19:39:23,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:23,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:23,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:23,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:23,864 INFO L87 Difference]: Start difference. First operand 453 states and 723 transitions. Second operand 3 states. [2020-10-25 19:39:23,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:23,902 INFO L93 Difference]: Finished difference Result 809 states and 1309 transitions. [2020-10-25 19:39:23,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:23,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-25 19:39:23,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:23,911 INFO L225 Difference]: With dead ends: 809 [2020-10-25 19:39:23,911 INFO L226 Difference]: Without dead ends: 807 [2020-10-25 19:39:23,912 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 [2020-10-25 19:39:23,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2020-10-25 19:39:23,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 645. [2020-10-25 19:39:23,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2020-10-25 19:39:23,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1003 transitions. [2020-10-25 19:39:23,934 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1003 transitions. Word has length 20 [2020-10-25 19:39:23,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:23,934 INFO L481 AbstractCegarLoop]: Abstraction has 645 states and 1003 transitions. [2020-10-25 19:39:23,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:23,935 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1003 transitions. [2020-10-25 19:39:23,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-25 19:39:23,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:23,937 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] [2020-10-25 19:39:23,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-25 19:39:23,938 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:23,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:23,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1769242063, now seen corresponding path program 1 times [2020-10-25 19:39:23,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:23,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865296897] [2020-10-25 19:39:23,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:23,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:23,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865296897] [2020-10-25 19:39:23,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:23,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:23,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828516117] [2020-10-25 19:39:23,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:23,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:23,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:23,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:23,985 INFO L87 Difference]: Start difference. First operand 645 states and 1003 transitions. Second operand 3 states. [2020-10-25 19:39:24,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:24,022 INFO L93 Difference]: Finished difference Result 1497 states and 2333 transitions. [2020-10-25 19:39:24,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:24,023 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-25 19:39:24,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:24,028 INFO L225 Difference]: With dead ends: 1497 [2020-10-25 19:39:24,029 INFO L226 Difference]: Without dead ends: 871 [2020-10-25 19:39:24,030 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 [2020-10-25 19:39:24,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-10-25 19:39:24,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 869. [2020-10-25 19:39:24,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 869 states. [2020-10-25 19:39:24,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1331 transitions. [2020-10-25 19:39:24,068 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1331 transitions. Word has length 20 [2020-10-25 19:39:24,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:24,069 INFO L481 AbstractCegarLoop]: Abstraction has 869 states and 1331 transitions. [2020-10-25 19:39:24,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:24,076 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1331 transitions. [2020-10-25 19:39:24,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-25 19:39:24,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:24,080 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] [2020-10-25 19:39:24,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-25 19:39:24,080 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:24,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:24,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1575091945, now seen corresponding path program 1 times [2020-10-25 19:39:24,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:24,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316642134] [2020-10-25 19:39:24,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:24,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:24,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316642134] [2020-10-25 19:39:24,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:24,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:24,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710540231] [2020-10-25 19:39:24,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:24,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:24,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:24,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:24,142 INFO L87 Difference]: Start difference. First operand 869 states and 1331 transitions. Second operand 3 states. [2020-10-25 19:39:24,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:24,185 INFO L93 Difference]: Finished difference Result 1305 states and 1989 transitions. [2020-10-25 19:39:24,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:24,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-25 19:39:24,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:24,191 INFO L225 Difference]: With dead ends: 1305 [2020-10-25 19:39:24,192 INFO L226 Difference]: Without dead ends: 887 [2020-10-25 19:39:24,193 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 [2020-10-25 19:39:24,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2020-10-25 19:39:24,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 885. [2020-10-25 19:39:24,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 885 states. [2020-10-25 19:39:24,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1331 transitions. [2020-10-25 19:39:24,235 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1331 transitions. Word has length 21 [2020-10-25 19:39:24,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:24,236 INFO L481 AbstractCegarLoop]: Abstraction has 885 states and 1331 transitions. [2020-10-25 19:39:24,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:24,236 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1331 transitions. [2020-10-25 19:39:24,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-25 19:39:24,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:24,238 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] [2020-10-25 19:39:24,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-25 19:39:24,238 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:24,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:24,239 INFO L82 PathProgramCache]: Analyzing trace with hash 988285931, now seen corresponding path program 1 times [2020-10-25 19:39:24,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:24,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795663022] [2020-10-25 19:39:24,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:24,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:24,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795663022] [2020-10-25 19:39:24,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:24,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:24,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068423211] [2020-10-25 19:39:24,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:24,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:24,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:24,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:24,271 INFO L87 Difference]: Start difference. First operand 885 states and 1331 transitions. Second operand 3 states. [2020-10-25 19:39:24,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:24,311 INFO L93 Difference]: Finished difference Result 1545 states and 2357 transitions. [2020-10-25 19:39:24,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:24,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-25 19:39:24,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:24,319 INFO L225 Difference]: With dead ends: 1545 [2020-10-25 19:39:24,320 INFO L226 Difference]: Without dead ends: 1543 [2020-10-25 19:39:24,321 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 [2020-10-25 19:39:24,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2020-10-25 19:39:24,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1285. [2020-10-25 19:39:24,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1285 states. [2020-10-25 19:39:24,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1875 transitions. [2020-10-25 19:39:24,364 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1875 transitions. Word has length 21 [2020-10-25 19:39:24,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:24,365 INFO L481 AbstractCegarLoop]: Abstraction has 1285 states and 1875 transitions. [2020-10-25 19:39:24,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:24,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1875 transitions. [2020-10-25 19:39:24,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-25 19:39:24,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:24,367 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] [2020-10-25 19:39:24,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-25 19:39:24,368 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:24,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:24,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1246451369, now seen corresponding path program 1 times [2020-10-25 19:39:24,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:24,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113466090] [2020-10-25 19:39:24,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:24,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:24,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113466090] [2020-10-25 19:39:24,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:24,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:24,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090672425] [2020-10-25 19:39:24,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:24,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:24,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:24,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:24,399 INFO L87 Difference]: Start difference. First operand 1285 states and 1875 transitions. Second operand 3 states. [2020-10-25 19:39:24,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:24,447 INFO L93 Difference]: Finished difference Result 2953 states and 4309 transitions. [2020-10-25 19:39:24,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:24,448 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-25 19:39:24,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:24,456 INFO L225 Difference]: With dead ends: 2953 [2020-10-25 19:39:24,457 INFO L226 Difference]: Without dead ends: 1703 [2020-10-25 19:39:24,459 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 [2020-10-25 19:39:24,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-25 19:39:24,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1701. [2020-10-25 19:39:24,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1701 states. [2020-10-25 19:39:24,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2435 transitions. [2020-10-25 19:39:24,519 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2435 transitions. Word has length 21 [2020-10-25 19:39:24,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:24,520 INFO L481 AbstractCegarLoop]: Abstraction has 1701 states and 2435 transitions. [2020-10-25 19:39:24,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:24,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2435 transitions. [2020-10-25 19:39:24,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-25 19:39:24,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:24,523 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] [2020-10-25 19:39:24,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-25 19:39:24,523 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:24,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:24,524 INFO L82 PathProgramCache]: Analyzing trace with hash 572308166, now seen corresponding path program 1 times [2020-10-25 19:39:24,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:24,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999983266] [2020-10-25 19:39:24,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:24,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999983266] [2020-10-25 19:39:24,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:24,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:24,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000487264] [2020-10-25 19:39:24,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:24,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:24,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:24,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:24,553 INFO L87 Difference]: Start difference. First operand 1701 states and 2435 transitions. Second operand 3 states. [2020-10-25 19:39:24,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:24,596 INFO L93 Difference]: Finished difference Result 2553 states and 3637 transitions. [2020-10-25 19:39:24,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:24,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-25 19:39:24,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:24,605 INFO L225 Difference]: With dead ends: 2553 [2020-10-25 19:39:24,606 INFO L226 Difference]: Without dead ends: 1735 [2020-10-25 19:39:24,607 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 [2020-10-25 19:39:24,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2020-10-25 19:39:24,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1733. [2020-10-25 19:39:24,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2020-10-25 19:39:24,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2435 transitions. [2020-10-25 19:39:24,671 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2435 transitions. Word has length 22 [2020-10-25 19:39:24,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:24,671 INFO L481 AbstractCegarLoop]: Abstraction has 1733 states and 2435 transitions. [2020-10-25 19:39:24,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:24,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2435 transitions. [2020-10-25 19:39:24,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-25 19:39:24,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:24,674 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] [2020-10-25 19:39:24,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-25 19:39:24,675 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:24,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:24,675 INFO L82 PathProgramCache]: Analyzing trace with hash -14497848, now seen corresponding path program 1 times [2020-10-25 19:39:24,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:24,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938934175] [2020-10-25 19:39:24,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:24,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:24,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938934175] [2020-10-25 19:39:24,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:24,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:24,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030102263] [2020-10-25 19:39:24,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:24,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:24,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:24,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:24,702 INFO L87 Difference]: Start difference. First operand 1733 states and 2435 transitions. Second operand 3 states. [2020-10-25 19:39:24,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:24,768 INFO L93 Difference]: Finished difference Result 2953 states and 4197 transitions. [2020-10-25 19:39:24,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:24,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-25 19:39:24,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:24,783 INFO L225 Difference]: With dead ends: 2953 [2020-10-25 19:39:24,784 INFO L226 Difference]: Without dead ends: 2951 [2020-10-25 19:39:24,785 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 [2020-10-25 19:39:24,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-10-25 19:39:24,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2565. [2020-10-25 19:39:24,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2565 states. [2020-10-25 19:39:24,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 3491 transitions. [2020-10-25 19:39:24,866 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 3491 transitions. Word has length 22 [2020-10-25 19:39:24,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:24,866 INFO L481 AbstractCegarLoop]: Abstraction has 2565 states and 3491 transitions. [2020-10-25 19:39:24,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:24,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 3491 transitions. [2020-10-25 19:39:24,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-25 19:39:24,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:24,871 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] [2020-10-25 19:39:24,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-25 19:39:24,871 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:24,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:24,872 INFO L82 PathProgramCache]: Analyzing trace with hash 243667590, now seen corresponding path program 1 times [2020-10-25 19:39:24,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:24,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390092922] [2020-10-25 19:39:24,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:24,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:24,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390092922] [2020-10-25 19:39:24,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:24,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:24,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287306167] [2020-10-25 19:39:24,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:24,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:24,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:24,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:24,899 INFO L87 Difference]: Start difference. First operand 2565 states and 3491 transitions. Second operand 3 states. [2020-10-25 19:39:24,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:24,989 INFO L93 Difference]: Finished difference Result 5833 states and 7909 transitions. [2020-10-25 19:39:24,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:24,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-25 19:39:24,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:25,004 INFO L225 Difference]: With dead ends: 5833 [2020-10-25 19:39:25,005 INFO L226 Difference]: Without dead ends: 3335 [2020-10-25 19:39:25,008 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 [2020-10-25 19:39:25,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3335 states. [2020-10-25 19:39:25,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3335 to 3333. [2020-10-25 19:39:25,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3333 states. [2020-10-25 19:39:25,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 4419 transitions. [2020-10-25 19:39:25,123 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 4419 transitions. Word has length 22 [2020-10-25 19:39:25,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:25,124 INFO L481 AbstractCegarLoop]: Abstraction has 3333 states and 4419 transitions. [2020-10-25 19:39:25,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:25,124 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 4419 transitions. [2020-10-25 19:39:25,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-25 19:39:25,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:25,128 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] [2020-10-25 19:39:25,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-25 19:39:25,128 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:25,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:25,129 INFO L82 PathProgramCache]: Analyzing trace with hash -449217570, now seen corresponding path program 1 times [2020-10-25 19:39:25,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:25,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767309244] [2020-10-25 19:39:25,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:25,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:25,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767309244] [2020-10-25 19:39:25,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:25,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:25,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724474035] [2020-10-25 19:39:25,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:25,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:25,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:25,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:25,154 INFO L87 Difference]: Start difference. First operand 3333 states and 4419 transitions. Second operand 3 states. [2020-10-25 19:39:25,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:25,218 INFO L93 Difference]: Finished difference Result 5001 states and 6597 transitions. [2020-10-25 19:39:25,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:25,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-25 19:39:25,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:25,234 INFO L225 Difference]: With dead ends: 5001 [2020-10-25 19:39:25,235 INFO L226 Difference]: Without dead ends: 3399 [2020-10-25 19:39:25,238 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 [2020-10-25 19:39:25,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3399 states. [2020-10-25 19:39:25,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3399 to 3397. [2020-10-25 19:39:25,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3397 states. [2020-10-25 19:39:25,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3397 states to 3397 states and 4419 transitions. [2020-10-25 19:39:25,352 INFO L78 Accepts]: Start accepts. Automaton has 3397 states and 4419 transitions. Word has length 23 [2020-10-25 19:39:25,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:25,352 INFO L481 AbstractCegarLoop]: Abstraction has 3397 states and 4419 transitions. [2020-10-25 19:39:25,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:25,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3397 states and 4419 transitions. [2020-10-25 19:39:25,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-25 19:39:25,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:25,357 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] [2020-10-25 19:39:25,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-25 19:39:25,357 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:25,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:25,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1036023584, now seen corresponding path program 1 times [2020-10-25 19:39:25,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:25,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762999365] [2020-10-25 19:39:25,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:25,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:25,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762999365] [2020-10-25 19:39:25,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:25,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:25,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705357872] [2020-10-25 19:39:25,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:25,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:25,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:25,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:25,398 INFO L87 Difference]: Start difference. First operand 3397 states and 4419 transitions. Second operand 3 states. [2020-10-25 19:39:25,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:25,496 INFO L93 Difference]: Finished difference Result 5641 states and 7365 transitions. [2020-10-25 19:39:25,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:25,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-25 19:39:25,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:25,526 INFO L225 Difference]: With dead ends: 5641 [2020-10-25 19:39:25,526 INFO L226 Difference]: Without dead ends: 5639 [2020-10-25 19:39:25,530 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 [2020-10-25 19:39:25,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5639 states. [2020-10-25 19:39:25,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5639 to 5125. [2020-10-25 19:39:25,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5125 states. [2020-10-25 19:39:25,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 6467 transitions. [2020-10-25 19:39:25,711 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 6467 transitions. Word has length 23 [2020-10-25 19:39:25,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:25,711 INFO L481 AbstractCegarLoop]: Abstraction has 5125 states and 6467 transitions. [2020-10-25 19:39:25,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:25,711 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 6467 transitions. [2020-10-25 19:39:25,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-25 19:39:25,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:25,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:25,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-25 19:39:25,719 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:25,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:25,720 INFO L82 PathProgramCache]: Analyzing trace with hash -777858146, now seen corresponding path program 1 times [2020-10-25 19:39:25,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:25,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140202893] [2020-10-25 19:39:25,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:25,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:25,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140202893] [2020-10-25 19:39:25,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:25,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:25,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571287022] [2020-10-25 19:39:25,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:25,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:25,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:25,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:25,745 INFO L87 Difference]: Start difference. First operand 5125 states and 6467 transitions. Second operand 3 states. [2020-10-25 19:39:25,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:25,855 INFO L93 Difference]: Finished difference Result 11529 states and 14405 transitions. [2020-10-25 19:39:25,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:25,856 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-25 19:39:25,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:25,869 INFO L225 Difference]: With dead ends: 11529 [2020-10-25 19:39:25,870 INFO L226 Difference]: Without dead ends: 6535 [2020-10-25 19:39:25,876 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 [2020-10-25 19:39:25,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6535 states. [2020-10-25 19:39:26,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6535 to 6533. [2020-10-25 19:39:26,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6533 states. [2020-10-25 19:39:26,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6533 states to 6533 states and 7939 transitions. [2020-10-25 19:39:26,079 INFO L78 Accepts]: Start accepts. Automaton has 6533 states and 7939 transitions. Word has length 23 [2020-10-25 19:39:26,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:26,079 INFO L481 AbstractCegarLoop]: Abstraction has 6533 states and 7939 transitions. [2020-10-25 19:39:26,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:26,080 INFO L276 IsEmpty]: Start isEmpty. Operand 6533 states and 7939 transitions. [2020-10-25 19:39:26,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-25 19:39:26,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:26,089 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] [2020-10-25 19:39:26,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-25 19:39:26,090 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:26,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:26,090 INFO L82 PathProgramCache]: Analyzing trace with hash -2051743973, now seen corresponding path program 1 times [2020-10-25 19:39:26,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:26,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663007454] [2020-10-25 19:39:26,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:26,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:26,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663007454] [2020-10-25 19:39:26,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:26,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:26,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604798214] [2020-10-25 19:39:26,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:26,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:26,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:26,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:26,160 INFO L87 Difference]: Start difference. First operand 6533 states and 7939 transitions. Second operand 3 states. [2020-10-25 19:39:26,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:26,264 INFO L93 Difference]: Finished difference Result 9801 states and 11845 transitions. [2020-10-25 19:39:26,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:26,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-25 19:39:26,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:26,278 INFO L225 Difference]: With dead ends: 9801 [2020-10-25 19:39:26,278 INFO L226 Difference]: Without dead ends: 6663 [2020-10-25 19:39:26,285 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 [2020-10-25 19:39:26,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6663 states. [2020-10-25 19:39:26,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6663 to 6661. [2020-10-25 19:39:26,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6661 states. [2020-10-25 19:39:26,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6661 states to 6661 states and 7939 transitions. [2020-10-25 19:39:26,530 INFO L78 Accepts]: Start accepts. Automaton has 6661 states and 7939 transitions. Word has length 24 [2020-10-25 19:39:26,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:26,530 INFO L481 AbstractCegarLoop]: Abstraction has 6661 states and 7939 transitions. [2020-10-25 19:39:26,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:26,530 INFO L276 IsEmpty]: Start isEmpty. Operand 6661 states and 7939 transitions. [2020-10-25 19:39:26,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-25 19:39:26,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:26,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:26,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-25 19:39:26,539 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:26,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:26,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1656417309, now seen corresponding path program 1 times [2020-10-25 19:39:26,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:26,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481519302] [2020-10-25 19:39:26,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:26,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:26,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481519302] [2020-10-25 19:39:26,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:26,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:26,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967971436] [2020-10-25 19:39:26,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:26,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:26,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:26,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:26,564 INFO L87 Difference]: Start difference. First operand 6661 states and 7939 transitions. Second operand 3 states. [2020-10-25 19:39:26,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:26,748 INFO L93 Difference]: Finished difference Result 10759 states and 12676 transitions. [2020-10-25 19:39:26,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:26,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-25 19:39:26,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:26,770 INFO L225 Difference]: With dead ends: 10759 [2020-10-25 19:39:26,770 INFO L226 Difference]: Without dead ends: 10757 [2020-10-25 19:39:26,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:26,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10757 states. [2020-10-25 19:39:27,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10757 to 10245. [2020-10-25 19:39:27,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10245 states. [2020-10-25 19:39:27,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10245 states to 10245 states and 11907 transitions. [2020-10-25 19:39:27,054 INFO L78 Accepts]: Start accepts. Automaton has 10245 states and 11907 transitions. Word has length 24 [2020-10-25 19:39:27,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:27,054 INFO L481 AbstractCegarLoop]: Abstraction has 10245 states and 11907 transitions. [2020-10-25 19:39:27,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:27,054 INFO L276 IsEmpty]: Start isEmpty. Operand 10245 states and 11907 transitions. [2020-10-25 19:39:27,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-25 19:39:27,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:27,068 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] [2020-10-25 19:39:27,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-25 19:39:27,068 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:27,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:27,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1914582747, now seen corresponding path program 1 times [2020-10-25 19:39:27,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:27,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768177528] [2020-10-25 19:39:27,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:27,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:27,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768177528] [2020-10-25 19:39:27,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:27,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:27,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742221283] [2020-10-25 19:39:27,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:27,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:27,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:27,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:27,096 INFO L87 Difference]: Start difference. First operand 10245 states and 11907 transitions. Second operand 3 states. [2020-10-25 19:39:27,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:27,276 INFO L93 Difference]: Finished difference Result 22789 states and 25987 transitions. [2020-10-25 19:39:27,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:27,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-25 19:39:27,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:27,277 INFO L225 Difference]: With dead ends: 22789 [2020-10-25 19:39:27,277 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 19:39:27,297 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 [2020-10-25 19:39:27,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 19:39:27,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 19:39:27,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 19:39:27,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 19:39:27,298 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-10-25 19:39:27,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:27,298 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 19:39:27,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:27,299 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 19:39:27,299 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 19:39:27,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-25 19:39:27,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 19:39:27,322 INFO L274 CegarLoopResult]: For program point L126-1(lines 38 146) no Hoare annotation was computed. [2020-10-25 19:39:27,322 INFO L274 CegarLoopResult]: For program point L102(line 102) no Hoare annotation was computed. [2020-10-25 19:39:27,323 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-25 19:39:27,323 INFO L274 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-10-25 19:39:27,323 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 19:39:27,323 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 19:39:27,323 INFO L274 CegarLoopResult]: For program point L111-1(lines 38 146) no Hoare annotation was computed. [2020-10-25 19:39:27,323 INFO L274 CegarLoopResult]: For program point L136-1(lines 38 146) no Hoare annotation was computed. [2020-10-25 19:39:27,323 INFO L274 CegarLoopResult]: For program point L95-1(lines 38 146) no Hoare annotation was computed. [2020-10-25 19:39:27,323 INFO L274 CegarLoopResult]: For program point L87-1(lines 38 146) no Hoare annotation was computed. [2020-10-25 19:39:27,323 INFO L274 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-10-25 19:39:27,324 INFO L274 CegarLoopResult]: For program point L79-1(lines 38 146) no Hoare annotation was computed. [2020-10-25 19:39:27,324 INFO L274 CegarLoopResult]: For program point L137(line 137) no Hoare annotation was computed. [2020-10-25 19:39:27,324 INFO L274 CegarLoopResult]: For program point L71-1(lines 38 146) no Hoare annotation was computed. [2020-10-25 19:39:27,324 INFO L274 CegarLoopResult]: For program point L63(lines 63 65) no Hoare annotation was computed. [2020-10-25 19:39:27,324 INFO L274 CegarLoopResult]: For program point L63-2(lines 38 146) no Hoare annotation was computed. [2020-10-25 19:39:27,324 INFO L274 CegarLoopResult]: For program point L121-1(lines 38 146) no Hoare annotation was computed. [2020-10-25 19:39:27,324 INFO L274 CegarLoopResult]: For program point L122(line 122) no Hoare annotation was computed. [2020-10-25 19:39:27,324 INFO L277 CegarLoopResult]: At program point L147(lines 7 151) the Hoare annotation is: true [2020-10-25 19:39:27,325 INFO L274 CegarLoopResult]: For program point L106-1(lines 38 146) no Hoare annotation was computed. [2020-10-25 19:39:27,325 INFO L274 CegarLoopResult]: For program point L40(lines 40 42) no Hoare annotation was computed. [2020-10-25 19:39:27,325 INFO L274 CegarLoopResult]: For program point L131-1(lines 38 146) no Hoare annotation was computed. [2020-10-25 19:39:27,325 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 19:39:27,325 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-25 19:39:27,325 INFO L274 CegarLoopResult]: For program point L107(line 107) no Hoare annotation was computed. [2020-10-25 19:39:27,325 INFO L274 CegarLoopResult]: For program point L132(line 132) no Hoare annotation was computed. [2020-10-25 19:39:27,325 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 19:39:27,325 INFO L274 CegarLoopResult]: For program point L91-1(lines 38 146) no Hoare annotation was computed. [2020-10-25 19:39:27,326 INFO L274 CegarLoopResult]: For program point L116-1(lines 38 146) no Hoare annotation was computed. [2020-10-25 19:39:27,326 INFO L274 CegarLoopResult]: For program point L83-1(lines 38 146) no Hoare annotation was computed. [2020-10-25 19:39:27,326 INFO L277 CegarLoopResult]: At program point L141-1(lines 38 146) the Hoare annotation is: true [2020-10-25 19:39:27,326 INFO L274 CegarLoopResult]: For program point L75-1(lines 38 146) no Hoare annotation was computed. [2020-10-25 19:39:27,326 INFO L274 CegarLoopResult]: For program point L67-1(lines 38 146) no Hoare annotation was computed. [2020-10-25 19:39:27,326 INFO L277 CegarLoopResult]: At program point L150(lines 6 151) the Hoare annotation is: true [2020-10-25 19:39:27,326 INFO L274 CegarLoopResult]: For program point L117(line 117) no Hoare annotation was computed. [2020-10-25 19:39:27,326 INFO L274 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-10-25 19:39:27,326 INFO L270 CegarLoopResult]: At program point L142-1(lines 7 151) the Hoare annotation is: false [2020-10-25 19:39:27,327 INFO L274 CegarLoopResult]: For program point L101-1(lines 38 146) no Hoare annotation was computed. [2020-10-25 19:39:27,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 07:39:27 BoogieIcfgContainer [2020-10-25 19:39:27,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 19:39:27,339 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 19:39:27,339 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 19:39:27,339 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 19:39:27,340 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:39:22" (3/4) ... [2020-10-25 19:39:27,343 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 19:39:27,357 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-25 19:39:27,358 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-25 19:39:27,358 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 19:39:27,358 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 19:39:27,417 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 19:39:27,417 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 19:39:27,419 INFO L168 Benchmark]: Toolchain (without parser) took 6654.45 ms. Allocated memory was 44.0 MB in the beginning and 398.5 MB in the end (delta: 354.4 MB). Free memory was 21.6 MB in the beginning and 167.5 MB in the end (delta: -145.9 MB). Peak memory consumption was 211.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:27,420 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 44.0 MB. Free memory is still 29.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:39:27,420 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.11 ms. Allocated memory is still 44.0 MB. Free memory was 20.9 MB in the beginning and 24.2 MB in the end (delta: -3.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:27,421 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.55 ms. Allocated memory is still 44.0 MB. Free memory was 24.2 MB in the beginning and 22.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:27,421 INFO L168 Benchmark]: Boogie Preprocessor took 58.64 ms. Allocated memory is still 44.0 MB. Free memory was 22.6 MB in the beginning and 21.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:27,422 INFO L168 Benchmark]: RCFGBuilder took 774.47 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.2 MB in the beginning and 34.7 MB in the end (delta: -13.5 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:27,422 INFO L168 Benchmark]: TraceAbstraction took 5328.30 ms. Allocated memory was 54.5 MB in the beginning and 398.5 MB in the end (delta: 343.9 MB). Free memory was 34.4 MB in the beginning and 171.7 MB in the end (delta: -137.3 MB). Peak memory consumption was 205.8 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:27,423 INFO L168 Benchmark]: Witness Printer took 78.69 ms. Allocated memory is still 398.5 MB. Free memory was 171.7 MB in the beginning and 167.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:27,425 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 44.0 MB. Free memory is still 29.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 324.11 ms. Allocated memory is still 44.0 MB. Free memory was 20.9 MB in the beginning and 24.2 MB in the end (delta: -3.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.55 ms. Allocated memory is still 44.0 MB. Free memory was 24.2 MB in the beginning and 22.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.64 ms. Allocated memory is still 44.0 MB. Free memory was 22.6 MB in the beginning and 21.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 774.47 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.2 MB in the beginning and 34.7 MB in the end (delta: -13.5 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5328.30 ms. Allocated memory was 54.5 MB in the beginning and 398.5 MB in the end (delta: 343.9 MB). Free memory was 34.4 MB in the beginning and 171.7 MB in the end (delta: -137.3 MB). Peak memory consumption was 205.8 MB. Max. memory is 16.1 GB. * Witness Printer took 78.69 ms. Allocated memory is still 398.5 MB. Free memory was 171.7 MB in the beginning and 167.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 25, TraceHistogramMax: 1, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1866 SDtfs, 922 SDslu, 1232 SDs, 0 SdLazy, 133 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10245occurred in iteration=24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 25 MinimizatonAttempts, 2072 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 521 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 505 NumberOfCodeBlocks, 505 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 480 ConstructedInterpolants, 0 QuantifiedInterpolants, 19602 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...