./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/locks/test_locks_8.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_8.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 37d0ed05d77a0379c9ed98058bf2f327252773ce ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:39:17,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 19:39:17,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 19:39:17,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 19:39:17,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 19:39:17,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 19:39:17,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 19:39:17,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 19:39:17,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 19:39:17,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 19:39:17,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 19:39:17,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 19:39:17,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 19:39:17,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 19:39:17,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 19:39:17,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 19:39:17,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 19:39:17,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 19:39:17,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 19:39:17,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 19:39:17,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 19:39:17,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 19:39:17,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 19:39:17,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 19:39:17,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 19:39:17,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 19:39:17,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 19:39:17,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 19:39:17,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 19:39:17,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 19:39:17,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 19:39:17,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 19:39:17,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 19:39:17,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 19:39:17,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 19:39:17,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 19:39:17,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 19:39:17,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 19:39:17,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 19:39:17,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 19:39:17,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 19:39:17,805 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 19:39:17,832 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 19:39:17,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 19:39:17,834 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 19:39:17,834 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 19:39:17,834 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 19:39:17,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 19:39:17,835 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 19:39:17,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 19:39:17,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 19:39:17,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 19:39:17,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 19:39:17,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 19:39:17,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 19:39:17,836 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 19:39:17,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 19:39:17,836 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 19:39:17,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 19:39:17,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 19:39:17,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 19:39:17,837 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 19:39:17,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 19:39:17,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 19:39:17,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 19:39:17,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 19:39:17,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 19:39:17,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 19:39:17,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 19:39:17,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 19:39:17,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 19:39:17,839 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37d0ed05d77a0379c9ed98058bf2f327252773ce [2020-10-25 19:39:18,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 19:39:18,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 19:39:18,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 19:39:18,317 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 19:39:18,318 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 19:39:18,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_8.c [2020-10-25 19:39:18,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbdecf612/dd6496bb18c342818229cfffdcf696e5/FLAG4d0c76119 [2020-10-25 19:39:19,051 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 19:39:19,052 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_8.c [2020-10-25 19:39:19,061 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbdecf612/dd6496bb18c342818229cfffdcf696e5/FLAG4d0c76119 [2020-10-25 19:39:19,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbdecf612/dd6496bb18c342818229cfffdcf696e5 [2020-10-25 19:39:19,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 19:39:19,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 19:39:19,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 19:39:19,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 19:39:19,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 19:39:19,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:39:19" (1/1) ... [2020-10-25 19:39:19,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f8cec11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:19, skipping insertion in model container [2020-10-25 19:39:19,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:39:19" (1/1) ... [2020-10-25 19:39:19,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 19:39:19,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 19:39:19,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:39:19,736 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 19:39:19,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:39:19,793 INFO L208 MainTranslator]: Completed translation [2020-10-25 19:39:19,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:19 WrapperNode [2020-10-25 19:39:19,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 19:39:19,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 19:39:19,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 19:39:19,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 19:39:19,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:19" (1/1) ... [2020-10-25 19:39:19,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:19" (1/1) ... [2020-10-25 19:39:19,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 19:39:19,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 19:39:19,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 19:39:19,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 19:39:19,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:19" (1/1) ... [2020-10-25 19:39:19,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:19" (1/1) ... [2020-10-25 19:39:19,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:19" (1/1) ... [2020-10-25 19:39:19,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:19" (1/1) ... [2020-10-25 19:39:19,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:19" (1/1) ... [2020-10-25 19:39:19,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:19" (1/1) ... [2020-10-25 19:39:19,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:19" (1/1) ... [2020-10-25 19:39:19,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 19:39:19,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 19:39:19,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 19:39:19,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 19:39:19,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:19" (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 19:39:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 19:39:20,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 19:39:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 19:39:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 19:39:20,617 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 19:39:20,617 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-25 19:39:20,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:39:20 BoogieIcfgContainer [2020-10-25 19:39:20,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 19:39:20,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 19:39:20,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 19:39:20,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 19:39:20,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 07:39:19" (1/3) ... [2020-10-25 19:39:20,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46170f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:39:20, skipping insertion in model container [2020-10-25 19:39:20,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:19" (2/3) ... [2020-10-25 19:39:20,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46170f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:39:20, skipping insertion in model container [2020-10-25 19:39:20,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:39:20" (3/3) ... [2020-10-25 19:39:20,629 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_8.c [2020-10-25 19:39:20,653 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 19:39:20,658 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 19:39:20,675 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 19:39:20,722 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 19:39:20,733 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 19:39:20,733 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 19:39:20,734 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 19:39:20,734 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 19:39:20,734 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 19:39:20,734 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 19:39:20,735 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 19:39:20,758 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-25 19:39:20,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 19:39:20,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:20,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:20,769 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:20,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:20,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1577492323, now seen corresponding path program 1 times [2020-10-25 19:39:20,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:20,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466434683] [2020-10-25 19:39:20,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:21,062 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 19:39:21,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466434683] [2020-10-25 19:39:21,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:21,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:21,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9179745] [2020-10-25 19:39:21,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:21,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:21,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:21,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:21,093 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-25 19:39:21,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:21,165 INFO L93 Difference]: Finished difference Result 72 states and 122 transitions. [2020-10-25 19:39:21,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:21,168 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-25 19:39:21,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:21,188 INFO L225 Difference]: With dead ends: 72 [2020-10-25 19:39:21,188 INFO L226 Difference]: Without dead ends: 57 [2020-10-25 19:39:21,191 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 19:39:21,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-25 19:39:21,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2020-10-25 19:39:21,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-25 19:39:21,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 70 transitions. [2020-10-25 19:39:21,242 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 70 transitions. Word has length 15 [2020-10-25 19:39:21,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:21,243 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 70 transitions. [2020-10-25 19:39:21,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:21,243 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 70 transitions. [2020-10-25 19:39:21,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 19:39:21,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:21,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:21,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 19:39:21,245 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:21,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:21,246 INFO L82 PathProgramCache]: Analyzing trace with hash -876427745, now seen corresponding path program 1 times [2020-10-25 19:39:21,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:21,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009255805] [2020-10-25 19:39:21,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:21,317 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 19:39:21,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009255805] [2020-10-25 19:39:21,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:21,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:21,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124876271] [2020-10-25 19:39:21,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:21,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:21,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:21,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:21,322 INFO L87 Difference]: Start difference. First operand 39 states and 70 transitions. Second operand 3 states. [2020-10-25 19:39:21,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:21,347 INFO L93 Difference]: Finished difference Result 94 states and 169 transitions. [2020-10-25 19:39:21,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:21,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-25 19:39:21,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:21,350 INFO L225 Difference]: With dead ends: 94 [2020-10-25 19:39:21,350 INFO L226 Difference]: Without dead ends: 57 [2020-10-25 19:39:21,352 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 19:39:21,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-25 19:39:21,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-10-25 19:39:21,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-25 19:39:21,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 98 transitions. [2020-10-25 19:39:21,362 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 98 transitions. Word has length 15 [2020-10-25 19:39:21,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:21,363 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 98 transitions. [2020-10-25 19:39:21,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:21,363 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 98 transitions. [2020-10-25 19:39:21,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 19:39:21,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:21,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:21,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 19:39:21,365 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:21,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:21,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1657407761, now seen corresponding path program 1 times [2020-10-25 19:39:21,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:21,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118325298] [2020-10-25 19:39:21,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:21,439 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 19:39:21,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118325298] [2020-10-25 19:39:21,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:21,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:21,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803841089] [2020-10-25 19:39:21,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:21,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:21,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:21,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:21,443 INFO L87 Difference]: Start difference. First operand 55 states and 98 transitions. Second operand 3 states. [2020-10-25 19:39:21,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:21,468 INFO L93 Difference]: Finished difference Result 87 states and 150 transitions. [2020-10-25 19:39:21,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:21,468 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-25 19:39:21,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:21,470 INFO L225 Difference]: With dead ends: 87 [2020-10-25 19:39:21,470 INFO L226 Difference]: Without dead ends: 60 [2020-10-25 19:39:21,471 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 19:39:21,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-25 19:39:21,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-25 19:39:21,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-25 19:39:21,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 100 transitions. [2020-10-25 19:39:21,485 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 100 transitions. Word has length 16 [2020-10-25 19:39:21,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:21,485 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 100 transitions. [2020-10-25 19:39:21,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:21,489 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 100 transitions. [2020-10-25 19:39:21,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 19:39:21,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:21,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:21,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 19:39:21,493 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:21,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:21,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1399242323, now seen corresponding path program 1 times [2020-10-25 19:39:21,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:21,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149858217] [2020-10-25 19:39:21,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:21,592 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 19:39:21,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149858217] [2020-10-25 19:39:21,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:21,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:21,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163043082] [2020-10-25 19:39:21,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:21,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:21,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:21,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:21,596 INFO L87 Difference]: Start difference. First operand 58 states and 100 transitions. Second operand 3 states. [2020-10-25 19:39:21,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:21,619 INFO L93 Difference]: Finished difference Result 109 states and 189 transitions. [2020-10-25 19:39:21,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:21,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-25 19:39:21,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:21,622 INFO L225 Difference]: With dead ends: 109 [2020-10-25 19:39:21,622 INFO L226 Difference]: Without dead ends: 107 [2020-10-25 19:39:21,623 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 19:39:21,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-25 19:39:21,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 77. [2020-10-25 19:39:21,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-25 19:39:21,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 133 transitions. [2020-10-25 19:39:21,637 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 133 transitions. Word has length 16 [2020-10-25 19:39:21,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:21,637 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 133 transitions. [2020-10-25 19:39:21,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:21,637 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 133 transitions. [2020-10-25 19:39:21,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 19:39:21,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:21,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:21,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 19:39:21,639 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:21,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:21,640 INFO L82 PathProgramCache]: Analyzing trace with hash -698177745, now seen corresponding path program 1 times [2020-10-25 19:39:21,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:21,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093539777] [2020-10-25 19:39:21,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:21,705 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 19:39:21,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093539777] [2020-10-25 19:39:21,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:21,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:21,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450575398] [2020-10-25 19:39:21,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:21,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:21,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:21,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:21,708 INFO L87 Difference]: Start difference. First operand 77 states and 133 transitions. Second operand 3 states. [2020-10-25 19:39:21,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:21,766 INFO L93 Difference]: Finished difference Result 181 states and 315 transitions. [2020-10-25 19:39:21,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:21,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-25 19:39:21,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:21,768 INFO L225 Difference]: With dead ends: 181 [2020-10-25 19:39:21,769 INFO L226 Difference]: Without dead ends: 109 [2020-10-25 19:39:21,770 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 19:39:21,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-25 19:39:21,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2020-10-25 19:39:21,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-25 19:39:21,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 183 transitions. [2020-10-25 19:39:21,785 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 183 transitions. Word has length 16 [2020-10-25 19:39:21,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:21,785 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 183 transitions. [2020-10-25 19:39:21,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:21,786 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 183 transitions. [2020-10-25 19:39:21,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 19:39:21,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:21,787 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 19:39:21,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-25 19:39:21,788 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:21,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:21,788 INFO L82 PathProgramCache]: Analyzing trace with hash -426624716, now seen corresponding path program 1 times [2020-10-25 19:39:21,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:21,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242923809] [2020-10-25 19:39:21,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:21,835 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 19:39:21,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242923809] [2020-10-25 19:39:21,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:21,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:21,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941513608] [2020-10-25 19:39:21,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:21,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:21,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:21,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:21,839 INFO L87 Difference]: Start difference. First operand 107 states and 183 transitions. Second operand 3 states. [2020-10-25 19:39:21,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:21,858 INFO L93 Difference]: Finished difference Result 162 states and 274 transitions. [2020-10-25 19:39:21,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:21,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-25 19:39:21,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:21,862 INFO L225 Difference]: With dead ends: 162 [2020-10-25 19:39:21,862 INFO L226 Difference]: Without dead ends: 111 [2020-10-25 19:39:21,863 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 19:39:21,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-25 19:39:21,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2020-10-25 19:39:21,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-25 19:39:21,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 183 transitions. [2020-10-25 19:39:21,877 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 183 transitions. Word has length 17 [2020-10-25 19:39:21,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:21,877 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 183 transitions. [2020-10-25 19:39:21,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:21,878 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 183 transitions. [2020-10-25 19:39:21,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 19:39:21,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:21,879 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 19:39:21,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-25 19:39:21,879 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:21,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:21,880 INFO L82 PathProgramCache]: Analyzing trace with hash -168459278, now seen corresponding path program 1 times [2020-10-25 19:39:21,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:21,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702416831] [2020-10-25 19:39:21,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:21,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:39:21,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702416831] [2020-10-25 19:39:21,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:21,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:21,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773714495] [2020-10-25 19:39:21,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:21,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:21,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:21,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:21,924 INFO L87 Difference]: Start difference. First operand 109 states and 183 transitions. Second operand 3 states. [2020-10-25 19:39:21,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:21,945 INFO L93 Difference]: Finished difference Result 309 states and 521 transitions. [2020-10-25 19:39:21,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:21,946 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-25 19:39:21,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:21,948 INFO L225 Difference]: With dead ends: 309 [2020-10-25 19:39:21,949 INFO L226 Difference]: Without dead ends: 207 [2020-10-25 19:39:21,950 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 19:39:21,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-25 19:39:21,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-10-25 19:39:21,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-25 19:39:21,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 339 transitions. [2020-10-25 19:39:21,978 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 339 transitions. Word has length 17 [2020-10-25 19:39:21,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:21,979 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 339 transitions. [2020-10-25 19:39:21,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:21,979 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 339 transitions. [2020-10-25 19:39:21,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 19:39:21,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:21,981 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 19:39:21,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-25 19:39:21,981 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:21,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:21,982 INFO L82 PathProgramCache]: Analyzing trace with hash -869523856, now seen corresponding path program 1 times [2020-10-25 19:39:21,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:21,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373084166] [2020-10-25 19:39:21,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:22,057 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 19:39:22,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373084166] [2020-10-25 19:39:22,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:22,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:22,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367594448] [2020-10-25 19:39:22,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:22,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:22,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:22,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:22,066 INFO L87 Difference]: Start difference. First operand 205 states and 339 transitions. Second operand 3 states. [2020-10-25 19:39:22,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:22,139 INFO L93 Difference]: Finished difference Result 257 states and 429 transitions. [2020-10-25 19:39:22,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:22,141 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-25 19:39:22,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:22,143 INFO L225 Difference]: With dead ends: 257 [2020-10-25 19:39:22,143 INFO L226 Difference]: Without dead ends: 255 [2020-10-25 19:39:22,144 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 19:39:22,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-25 19:39:22,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 205. [2020-10-25 19:39:22,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-25 19:39:22,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 335 transitions. [2020-10-25 19:39:22,161 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 335 transitions. Word has length 17 [2020-10-25 19:39:22,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:22,161 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 335 transitions. [2020-10-25 19:39:22,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:22,161 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 335 transitions. [2020-10-25 19:39:22,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-25 19:39:22,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:22,163 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 19:39:22,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-25 19:39:22,164 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:22,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:22,164 INFO L82 PathProgramCache]: Analyzing trace with hash -927055644, now seen corresponding path program 1 times [2020-10-25 19:39:22,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:22,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495640887] [2020-10-25 19:39:22,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:22,200 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 19:39:22,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495640887] [2020-10-25 19:39:22,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:22,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:22,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476723152] [2020-10-25 19:39:22,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:22,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:22,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:22,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:22,203 INFO L87 Difference]: Start difference. First operand 205 states and 335 transitions. Second operand 3 states. [2020-10-25 19:39:22,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:22,226 INFO L93 Difference]: Finished difference Result 373 states and 617 transitions. [2020-10-25 19:39:22,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:22,227 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-25 19:39:22,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:22,229 INFO L225 Difference]: With dead ends: 373 [2020-10-25 19:39:22,230 INFO L226 Difference]: Without dead ends: 371 [2020-10-25 19:39:22,231 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 19:39:22,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-10-25 19:39:22,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 289. [2020-10-25 19:39:22,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-25 19:39:22,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 463 transitions. [2020-10-25 19:39:22,247 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 463 transitions. Word has length 18 [2020-10-25 19:39:22,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:22,248 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 463 transitions. [2020-10-25 19:39:22,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:22,248 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 463 transitions. [2020-10-25 19:39:22,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-25 19:39:22,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:22,251 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 19:39:22,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-25 19:39:22,251 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:22,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:22,252 INFO L82 PathProgramCache]: Analyzing trace with hash -225991066, now seen corresponding path program 1 times [2020-10-25 19:39:22,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:22,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131418207] [2020-10-25 19:39:22,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:22,283 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 19:39:22,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131418207] [2020-10-25 19:39:22,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:22,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:22,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173008992] [2020-10-25 19:39:22,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:22,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:22,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:22,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:22,286 INFO L87 Difference]: Start difference. First operand 289 states and 463 transitions. Second operand 3 states. [2020-10-25 19:39:22,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:22,310 INFO L93 Difference]: Finished difference Result 677 states and 1089 transitions. [2020-10-25 19:39:22,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:22,311 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-25 19:39:22,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:22,314 INFO L225 Difference]: With dead ends: 677 [2020-10-25 19:39:22,314 INFO L226 Difference]: Without dead ends: 395 [2020-10-25 19:39:22,316 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 19:39:22,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-10-25 19:39:22,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 393. [2020-10-25 19:39:22,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-10-25 19:39:22,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 619 transitions. [2020-10-25 19:39:22,341 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 619 transitions. Word has length 18 [2020-10-25 19:39:22,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:22,342 INFO L481 AbstractCegarLoop]: Abstraction has 393 states and 619 transitions. [2020-10-25 19:39:22,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:22,342 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 619 transitions. [2020-10-25 19:39:22,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-25 19:39:22,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:22,345 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 19:39:22,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-25 19:39:22,345 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:22,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:22,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1326261127, now seen corresponding path program 1 times [2020-10-25 19:39:22,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:22,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733614347] [2020-10-25 19:39:22,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:22,376 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 19:39:22,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733614347] [2020-10-25 19:39:22,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:22,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:22,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009337627] [2020-10-25 19:39:22,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:22,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:22,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:22,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:22,379 INFO L87 Difference]: Start difference. First operand 393 states and 619 transitions. Second operand 3 states. [2020-10-25 19:39:22,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:22,401 INFO L93 Difference]: Finished difference Result 597 states and 937 transitions. [2020-10-25 19:39:22,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:22,401 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-25 19:39:22,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:22,404 INFO L225 Difference]: With dead ends: 597 [2020-10-25 19:39:22,404 INFO L226 Difference]: Without dead ends: 407 [2020-10-25 19:39:22,405 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 19:39:22,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-10-25 19:39:22,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 405. [2020-10-25 19:39:22,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-10-25 19:39:22,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 627 transitions. [2020-10-25 19:39:22,420 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 627 transitions. Word has length 19 [2020-10-25 19:39:22,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:22,421 INFO L481 AbstractCegarLoop]: Abstraction has 405 states and 627 transitions. [2020-10-25 19:39:22,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:22,421 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 627 transitions. [2020-10-25 19:39:22,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-25 19:39:22,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:22,423 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 19:39:22,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-25 19:39:22,423 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:22,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:22,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1584426565, now seen corresponding path program 1 times [2020-10-25 19:39:22,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:22,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772877542] [2020-10-25 19:39:22,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:22,484 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 19:39:22,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772877542] [2020-10-25 19:39:22,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:22,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:22,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11515414] [2020-10-25 19:39:22,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:22,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:22,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:22,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:22,486 INFO L87 Difference]: Start difference. First operand 405 states and 627 transitions. Second operand 3 states. [2020-10-25 19:39:22,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:22,510 INFO L93 Difference]: Finished difference Result 713 states and 1117 transitions. [2020-10-25 19:39:22,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:22,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-25 19:39:22,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:22,514 INFO L225 Difference]: With dead ends: 713 [2020-10-25 19:39:22,514 INFO L226 Difference]: Without dead ends: 711 [2020-10-25 19:39:22,515 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 19:39:22,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-10-25 19:39:22,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 581. [2020-10-25 19:39:22,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-10-25 19:39:22,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 875 transitions. [2020-10-25 19:39:22,542 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 875 transitions. Word has length 19 [2020-10-25 19:39:22,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:22,545 INFO L481 AbstractCegarLoop]: Abstraction has 581 states and 875 transitions. [2020-10-25 19:39:22,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:22,545 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 875 transitions. [2020-10-25 19:39:22,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-25 19:39:22,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:22,547 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 19:39:22,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-25 19:39:22,548 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:22,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:22,549 INFO L82 PathProgramCache]: Analyzing trace with hash -2009476153, now seen corresponding path program 1 times [2020-10-25 19:39:22,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:22,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813255387] [2020-10-25 19:39:22,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:22,618 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 19:39:22,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813255387] [2020-10-25 19:39:22,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:22,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:22,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946162953] [2020-10-25 19:39:22,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:22,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:22,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:22,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:22,622 INFO L87 Difference]: Start difference. First operand 581 states and 875 transitions. Second operand 3 states. [2020-10-25 19:39:22,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:22,662 INFO L93 Difference]: Finished difference Result 1337 states and 2013 transitions. [2020-10-25 19:39:22,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:22,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-25 19:39:22,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:22,676 INFO L225 Difference]: With dead ends: 1337 [2020-10-25 19:39:22,677 INFO L226 Difference]: Without dead ends: 775 [2020-10-25 19:39:22,679 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 19:39:22,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2020-10-25 19:39:22,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 773. [2020-10-25 19:39:22,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2020-10-25 19:39:22,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1139 transitions. [2020-10-25 19:39:22,706 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1139 transitions. Word has length 19 [2020-10-25 19:39:22,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:22,706 INFO L481 AbstractCegarLoop]: Abstraction has 773 states and 1139 transitions. [2020-10-25 19:39:22,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:22,709 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1139 transitions. [2020-10-25 19:39:22,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-25 19:39:22,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:22,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:22,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-25 19:39:22,713 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:22,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:22,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1872798619, now seen corresponding path program 1 times [2020-10-25 19:39:22,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:22,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798558480] [2020-10-25 19:39:22,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:22,773 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 19:39:22,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798558480] [2020-10-25 19:39:22,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:22,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:22,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713972543] [2020-10-25 19:39:22,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:22,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:22,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:22,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:22,778 INFO L87 Difference]: Start difference. First operand 773 states and 1139 transitions. Second operand 3 states. [2020-10-25 19:39:22,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:22,817 INFO L93 Difference]: Finished difference Result 1161 states and 1701 transitions. [2020-10-25 19:39:22,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:22,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-25 19:39:22,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:22,832 INFO L225 Difference]: With dead ends: 1161 [2020-10-25 19:39:22,833 INFO L226 Difference]: Without dead ends: 791 [2020-10-25 19:39:22,834 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 19:39:22,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2020-10-25 19:39:22,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 789. [2020-10-25 19:39:22,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-10-25 19:39:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1139 transitions. [2020-10-25 19:39:22,864 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1139 transitions. Word has length 20 [2020-10-25 19:39:22,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:22,865 INFO L481 AbstractCegarLoop]: Abstraction has 789 states and 1139 transitions. [2020-10-25 19:39:22,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:22,865 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1139 transitions. [2020-10-25 19:39:22,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-25 19:39:22,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:22,867 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 19:39:22,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-25 19:39:22,867 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:22,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:22,868 INFO L82 PathProgramCache]: Analyzing trace with hash 2130964057, now seen corresponding path program 1 times [2020-10-25 19:39:22,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:22,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916185324] [2020-10-25 19:39:22,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:22,900 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 19:39:22,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916185324] [2020-10-25 19:39:22,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:22,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:22,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751184535] [2020-10-25 19:39:22,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:22,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:22,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:22,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:22,903 INFO L87 Difference]: Start difference. First operand 789 states and 1139 transitions. Second operand 3 states. [2020-10-25 19:39:22,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:22,948 INFO L93 Difference]: Finished difference Result 1353 states and 1973 transitions. [2020-10-25 19:39:22,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:22,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-25 19:39:22,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:22,956 INFO L225 Difference]: With dead ends: 1353 [2020-10-25 19:39:22,957 INFO L226 Difference]: Without dead ends: 1351 [2020-10-25 19:39:22,960 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 19:39:22,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2020-10-25 19:39:22,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1157. [2020-10-25 19:39:22,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2020-10-25 19:39:23,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1619 transitions. [2020-10-25 19:39:23,004 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1619 transitions. Word has length 20 [2020-10-25 19:39:23,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:23,005 INFO L481 AbstractCegarLoop]: Abstraction has 1157 states and 1619 transitions. [2020-10-25 19:39:23,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:23,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1619 transitions. [2020-10-25 19:39:23,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-25 19:39:23,007 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, 1, 1] [2020-10-25 19:39:23,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-25 19:39:23,009 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:23,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:23,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1462938661, now seen corresponding path program 1 times [2020-10-25 19:39:23,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:23,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900203362] [2020-10-25 19:39:23,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:23,053 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 19:39:23,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900203362] [2020-10-25 19:39:23,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:23,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:23,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929459895] [2020-10-25 19:39:23,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:23,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:23,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:23,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:23,068 INFO L87 Difference]: Start difference. First operand 1157 states and 1619 transitions. Second operand 3 states. [2020-10-25 19:39:23,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:23,127 INFO L93 Difference]: Finished difference Result 2633 states and 3669 transitions. [2020-10-25 19:39:23,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:23,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-25 19:39:23,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:23,137 INFO L225 Difference]: With dead ends: 2633 [2020-10-25 19:39:23,138 INFO L226 Difference]: Without dead ends: 1511 [2020-10-25 19:39:23,140 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 19:39:23,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2020-10-25 19:39:23,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1509. [2020-10-25 19:39:23,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1509 states. [2020-10-25 19:39:23,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 2051 transitions. [2020-10-25 19:39:23,196 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 2051 transitions. Word has length 20 [2020-10-25 19:39:23,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:23,198 INFO L481 AbstractCegarLoop]: Abstraction has 1509 states and 2051 transitions. [2020-10-25 19:39:23,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:23,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 2051 transitions. [2020-10-25 19:39:23,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-25 19:39:23,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:23,203 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 19:39:23,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-25 19:39:23,205 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:23,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:23,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1635592028, now seen corresponding path program 1 times [2020-10-25 19:39:23,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:23,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123074277] [2020-10-25 19:39:23,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:23,250 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 19:39:23,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123074277] [2020-10-25 19:39:23,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:23,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:23,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027475534] [2020-10-25 19:39:23,252 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 19:39:23,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:23,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:23,254 INFO L87 Difference]: Start difference. First operand 1509 states and 2051 transitions. Second operand 3 states. [2020-10-25 19:39:23,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:23,305 INFO L93 Difference]: Finished difference Result 2265 states and 3061 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 19:39:23,306 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-25 19:39:23,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:23,313 INFO L225 Difference]: With dead ends: 2265 [2020-10-25 19:39:23,314 INFO L226 Difference]: Without dead ends: 1543 [2020-10-25 19:39:23,316 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 19:39:23,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2020-10-25 19:39:23,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1541. [2020-10-25 19:39:23,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2020-10-25 19:39:23,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2051 transitions. [2020-10-25 19:39:23,387 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2051 transitions. Word has length 21 [2020-10-25 19:39:23,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:23,387 INFO L481 AbstractCegarLoop]: Abstraction has 1541 states and 2051 transitions. [2020-10-25 19:39:23,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:23,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2051 transitions. [2020-10-25 19:39:23,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-25 19:39:23,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:23,390 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 19:39:23,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-25 19:39:23,391 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:23,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:23,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1893757466, now seen corresponding path program 1 times [2020-10-25 19:39:23,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:23,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457688207] [2020-10-25 19:39:23,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:23,417 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 19:39:23,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457688207] [2020-10-25 19:39:23,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:23,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:23,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758880029] [2020-10-25 19:39:23,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:23,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:23,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:23,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:23,420 INFO L87 Difference]: Start difference. First operand 1541 states and 2051 transitions. Second operand 3 states. [2020-10-25 19:39:23,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:23,482 INFO L93 Difference]: Finished difference Result 2569 states and 3429 transitions. [2020-10-25 19:39:23,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:23,482 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-25 19:39:23,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:23,494 INFO L225 Difference]: With dead ends: 2569 [2020-10-25 19:39:23,495 INFO L226 Difference]: Without dead ends: 2567 [2020-10-25 19:39:23,496 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 19:39:23,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2020-10-25 19:39:23,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2309. [2020-10-25 19:39:23,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2309 states. [2020-10-25 19:39:23,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 2979 transitions. [2020-10-25 19:39:23,570 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 2979 transitions. Word has length 21 [2020-10-25 19:39:23,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:23,571 INFO L481 AbstractCegarLoop]: Abstraction has 2309 states and 2979 transitions. [2020-10-25 19:39:23,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:23,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 2979 transitions. [2020-10-25 19:39:23,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-25 19:39:23,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:23,575 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 19:39:23,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-25 19:39:23,576 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:23,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:23,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1700145252, now seen corresponding path program 1 times [2020-10-25 19:39:23,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:23,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240607706] [2020-10-25 19:39:23,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:23,602 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 19:39:23,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240607706] [2020-10-25 19:39:23,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:23,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:23,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743033447] [2020-10-25 19:39:23,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:23,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:23,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:23,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:23,605 INFO L87 Difference]: Start difference. First operand 2309 states and 2979 transitions. Second operand 3 states. [2020-10-25 19:39:23,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:23,698 INFO L93 Difference]: Finished difference Result 5193 states and 6629 transitions. [2020-10-25 19:39:23,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:23,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-25 19:39:23,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:23,714 INFO L225 Difference]: With dead ends: 5193 [2020-10-25 19:39:23,715 INFO L226 Difference]: Without dead ends: 2951 [2020-10-25 19:39:23,719 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 19:39:23,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-10-25 19:39:23,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2949. [2020-10-25 19:39:23,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2949 states. [2020-10-25 19:39:23,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 3651 transitions. [2020-10-25 19:39:23,858 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 3651 transitions. Word has length 21 [2020-10-25 19:39:23,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:23,858 INFO L481 AbstractCegarLoop]: Abstraction has 2949 states and 3651 transitions. [2020-10-25 19:39:23,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:23,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 3651 transitions. [2020-10-25 19:39:23,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-25 19:39:23,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:23,864 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 19:39:23,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-25 19:39:23,864 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:23,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:23,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1422844656, now seen corresponding path program 1 times [2020-10-25 19:39:23,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:23,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124704275] [2020-10-25 19:39:23,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:23,887 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 19:39:23,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124704275] [2020-10-25 19:39:23,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:23,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:23,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191389620] [2020-10-25 19:39:23,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:23,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:23,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:23,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:23,889 INFO L87 Difference]: Start difference. First operand 2949 states and 3651 transitions. Second operand 3 states. [2020-10-25 19:39:23,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:23,963 INFO L93 Difference]: Finished difference Result 4425 states and 5445 transitions. [2020-10-25 19:39:23,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:23,963 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-25 19:39:23,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:23,979 INFO L225 Difference]: With dead ends: 4425 [2020-10-25 19:39:23,980 INFO L226 Difference]: Without dead ends: 3015 [2020-10-25 19:39:23,983 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 19:39:23,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2020-10-25 19:39:24,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 3013. [2020-10-25 19:39:24,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3013 states. [2020-10-25 19:39:24,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 3651 transitions. [2020-10-25 19:39:24,114 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 3651 transitions. Word has length 22 [2020-10-25 19:39:24,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:24,114 INFO L481 AbstractCegarLoop]: Abstraction has 3013 states and 3651 transitions. [2020-10-25 19:39:24,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:24,114 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 3651 transitions. [2020-10-25 19:39:24,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-25 19:39:24,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:24,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:24,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-25 19:39:24,119 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:24,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:24,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1164679218, now seen corresponding path program 1 times [2020-10-25 19:39:24,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:24,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861211015] [2020-10-25 19:39:24,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:24,158 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 19:39:24,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861211015] [2020-10-25 19:39:24,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:24,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:24,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646230729] [2020-10-25 19:39:24,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:24,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:24,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:24,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:24,163 INFO L87 Difference]: Start difference. First operand 3013 states and 3651 transitions. Second operand 3 states. [2020-10-25 19:39:24,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:24,287 INFO L93 Difference]: Finished difference Result 4871 states and 5828 transitions. [2020-10-25 19:39:24,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:24,288 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-25 19:39:24,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:24,309 INFO L225 Difference]: With dead ends: 4871 [2020-10-25 19:39:24,309 INFO L226 Difference]: Without dead ends: 4869 [2020-10-25 19:39:24,311 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 19:39:24,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4869 states. [2020-10-25 19:39:24,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4869 to 4613. [2020-10-25 19:39:24,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4613 states. [2020-10-25 19:39:24,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4613 states to 4613 states and 5443 transitions. [2020-10-25 19:39:24,502 INFO L78 Accepts]: Start accepts. Automaton has 4613 states and 5443 transitions. Word has length 22 [2020-10-25 19:39:24,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:24,503 INFO L481 AbstractCegarLoop]: Abstraction has 4613 states and 5443 transitions. [2020-10-25 19:39:24,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:24,503 INFO L276 IsEmpty]: Start isEmpty. Operand 4613 states and 5443 transitions. [2020-10-25 19:39:24,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-25 19:39:24,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:24,512 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 19:39:24,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-25 19:39:24,512 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:24,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:24,513 INFO L82 PathProgramCache]: Analyzing trace with hash -463614640, now seen corresponding path program 1 times [2020-10-25 19:39:24,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:24,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700813950] [2020-10-25 19:39:24,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:24,541 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 19:39:24,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700813950] [2020-10-25 19:39:24,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:24,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:24,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957094992] [2020-10-25 19:39:24,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:24,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:24,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:24,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:24,545 INFO L87 Difference]: Start difference. First operand 4613 states and 5443 transitions. Second operand 3 states. [2020-10-25 19:39:24,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:24,732 INFO L93 Difference]: Finished difference Result 10245 states and 11843 transitions. [2020-10-25 19:39:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:24,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-25 19:39:24,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:24,733 INFO L225 Difference]: With dead ends: 10245 [2020-10-25 19:39:24,733 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 19:39:24,743 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 19:39:24,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 19:39:24,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 19:39:24,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 19:39:24,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 19:39:24,745 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-10-25 19:39:24,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:24,745 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 19:39:24,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:24,745 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 19:39:24,746 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 19:39:24,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-25 19:39:24,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 19:39:24,767 INFO L274 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-10-25 19:39:24,767 INFO L274 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-10-25 19:39:24,767 INFO L274 CegarLoopResult]: For program point L102-1(lines 35 132) no Hoare annotation was computed. [2020-10-25 19:39:24,767 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-25 19:39:24,768 INFO L277 CegarLoopResult]: At program point L127-1(lines 35 132) the Hoare annotation is: true [2020-10-25 19:39:24,768 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 19:39:24,768 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 19:39:24,768 INFO L274 CegarLoopResult]: For program point L86-1(lines 35 132) no Hoare annotation was computed. [2020-10-25 19:39:24,768 INFO L274 CegarLoopResult]: For program point L78-1(lines 35 132) no Hoare annotation was computed. [2020-10-25 19:39:24,768 INFO L277 CegarLoopResult]: At program point L136(lines 6 137) the Hoare annotation is: true [2020-10-25 19:39:24,768 INFO L274 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-10-25 19:39:24,768 INFO L274 CegarLoopResult]: For program point L37(lines 37 39) no Hoare annotation was computed. [2020-10-25 19:39:24,768 INFO L274 CegarLoopResult]: For program point L70-1(lines 35 132) no Hoare annotation was computed. [2020-10-25 19:39:24,768 INFO L274 CegarLoopResult]: For program point L128(line 128) no Hoare annotation was computed. [2020-10-25 19:39:24,769 INFO L270 CegarLoopResult]: At program point L128-1(lines 7 137) the Hoare annotation is: false [2020-10-25 19:39:24,769 INFO L274 CegarLoopResult]: For program point L62-1(lines 35 132) no Hoare annotation was computed. [2020-10-25 19:39:24,769 INFO L274 CegarLoopResult]: For program point L112-1(lines 35 132) no Hoare annotation was computed. [2020-10-25 19:39:24,769 INFO L274 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2020-10-25 19:39:24,769 INFO L274 CegarLoopResult]: For program point L97-1(lines 35 132) no Hoare annotation was computed. [2020-10-25 19:39:24,769 INFO L274 CegarLoopResult]: For program point L122-1(lines 35 132) no Hoare annotation was computed. [2020-10-25 19:39:24,769 INFO L274 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-10-25 19:39:24,769 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 19:39:24,769 INFO L274 CegarLoopResult]: For program point L123(line 123) no Hoare annotation was computed. [2020-10-25 19:39:24,769 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-25 19:39:24,769 INFO L274 CegarLoopResult]: For program point L82-1(lines 35 132) no Hoare annotation was computed. [2020-10-25 19:39:24,770 INFO L274 CegarLoopResult]: For program point L107-1(lines 35 132) no Hoare annotation was computed. [2020-10-25 19:39:24,770 INFO L274 CegarLoopResult]: For program point L74-1(lines 35 132) no Hoare annotation was computed. [2020-10-25 19:39:24,770 INFO L274 CegarLoopResult]: For program point L66-1(lines 35 132) no Hoare annotation was computed. [2020-10-25 19:39:24,770 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 19:39:24,772 INFO L274 CegarLoopResult]: For program point L58(lines 58 60) no Hoare annotation was computed. [2020-10-25 19:39:24,772 INFO L274 CegarLoopResult]: For program point L58-2(lines 35 132) no Hoare annotation was computed. [2020-10-25 19:39:24,772 INFO L274 CegarLoopResult]: For program point L108(line 108) no Hoare annotation was computed. [2020-10-25 19:39:24,773 INFO L277 CegarLoopResult]: At program point L133(lines 7 137) the Hoare annotation is: true [2020-10-25 19:39:24,773 INFO L274 CegarLoopResult]: For program point L92-1(lines 35 132) no Hoare annotation was computed. [2020-10-25 19:39:24,773 INFO L274 CegarLoopResult]: For program point L117-1(lines 35 132) no Hoare annotation was computed. [2020-10-25 19:39:24,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 07:39:24 BoogieIcfgContainer [2020-10-25 19:39:24,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 19:39:24,787 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 19:39:24,787 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 19:39:24,788 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 19:39:24,788 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:39:20" (3/4) ... [2020-10-25 19:39:24,792 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 19:39:24,809 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-25 19:39:24,810 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-25 19:39:24,810 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 19:39:24,811 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 19:39:24,903 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 19:39:24,903 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 19:39:24,906 INFO L168 Benchmark]: Toolchain (without parser) took 5468.55 ms. Allocated memory was 41.9 MB in the beginning and 163.6 MB in the end (delta: 121.6 MB). Free memory was 19.8 MB in the beginning and 93.4 MB in the end (delta: -73.6 MB). Peak memory consumption was 49.4 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:24,907 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 33.6 MB. Free memory was 20.6 MB in the beginning and 20.6 MB in the end (delta: 22.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:39:24,907 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.40 ms. Allocated memory is still 41.9 MB. Free memory was 19.1 MB in the beginning and 18.4 MB in the end (delta: 689.8 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:24,908 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.18 ms. Allocated memory is still 41.9 MB. Free memory was 18.4 MB in the beginning and 26.6 MB in the end (delta: -8.2 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:24,909 INFO L168 Benchmark]: Boogie Preprocessor took 58.48 ms. Allocated memory is still 41.9 MB. Free memory was 26.6 MB in the beginning and 25.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:24,909 INFO L168 Benchmark]: RCFGBuilder took 681.69 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 25.3 MB in the beginning and 26.1 MB in the end (delta: -771.9 kB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:24,910 INFO L168 Benchmark]: TraceAbstraction took 4165.60 ms. Allocated memory was 50.3 MB in the beginning and 163.6 MB in the end (delta: 113.2 MB). Free memory was 25.7 MB in the beginning and 96.5 MB in the end (delta: -70.8 MB). Peak memory consumption was 42.4 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:24,910 INFO L168 Benchmark]: Witness Printer took 116.20 ms. Allocated memory is still 163.6 MB. Free memory was 96.5 MB in the beginning and 93.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:24,912 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 33.6 MB. Free memory was 20.6 MB in the beginning and 20.6 MB in the end (delta: 22.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 348.40 ms. Allocated memory is still 41.9 MB. Free memory was 19.1 MB in the beginning and 18.4 MB in the end (delta: 689.8 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.18 ms. Allocated memory is still 41.9 MB. Free memory was 18.4 MB in the beginning and 26.6 MB in the end (delta: -8.2 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.48 ms. Allocated memory is still 41.9 MB. Free memory was 26.6 MB in the beginning and 25.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 681.69 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 25.3 MB in the beginning and 26.1 MB in the end (delta: -771.9 kB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4165.60 ms. Allocated memory was 50.3 MB in the beginning and 163.6 MB in the end (delta: 113.2 MB). Free memory was 25.7 MB in the beginning and 96.5 MB in the end (delta: -70.8 MB). Peak memory consumption was 42.4 MB. Max. memory is 16.1 GB. * Witness Printer took 116.20 ms. Allocated memory is still 163.6 MB. Free memory was 96.5 MB in the beginning and 93.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 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: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 22, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1474 SDtfs, 720 SDslu, 964 SDs, 0 SdLazy, 117 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4613occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 22 MinimizatonAttempts, 1044 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 265 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, 411 NumberOfCodeBlocks, 411 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 389 ConstructedInterpolants, 0 QuantifiedInterpolants, 14367 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 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...