./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label06.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 782b97ab44d54cd800983e700b0d1573a763da7ea88502d61372bfc21545a0f2 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 21:00:42,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 21:00:42,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 21:00:42,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 21:00:42,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 21:00:43,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 21:00:43,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 21:00:43,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 21:00:43,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 21:00:43,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 21:00:43,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 21:00:43,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 21:00:43,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 21:00:43,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 21:00:43,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 21:00:43,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 21:00:43,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 21:00:43,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 21:00:43,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 21:00:43,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 21:00:43,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 21:00:43,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 21:00:43,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 21:00:43,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 21:00:43,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 21:00:43,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 21:00:43,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 21:00:43,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 21:00:43,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 21:00:43,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 21:00:43,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 21:00:43,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 21:00:43,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 21:00:43,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 21:00:43,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 21:00:43,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 21:00:43,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 21:00:43,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 21:00:43,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 21:00:43,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 21:00:43,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 21:00:43,055 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 21:00:43,079 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 21:00:43,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 21:00:43,080 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 21:00:43,080 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 21:00:43,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 21:00:43,081 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 21:00:43,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 21:00:43,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 21:00:43,082 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 21:00:43,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 21:00:43,083 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 21:00:43,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 21:00:43,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 21:00:43,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 21:00:43,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 21:00:43,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 21:00:43,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 21:00:43,084 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 21:00:43,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 21:00:43,084 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 21:00:43,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 21:00:43,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 21:00:43,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 21:00:43,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 21:00:43,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 21:00:43,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 21:00:43,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 21:00:43,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 21:00:43,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 21:00:43,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 21:00:43,087 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 21:00:43,087 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 21:00:43,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 21:00:43,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 21:00:43,087 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 782b97ab44d54cd800983e700b0d1573a763da7ea88502d61372bfc21545a0f2 [2021-12-17 21:00:43,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 21:00:43,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 21:00:43,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 21:00:43,380 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 21:00:43,381 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 21:00:43,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label06.c [2021-12-17 21:00:43,446 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d5117c1d/8bf3219ef47941aab4339712d3651391/FLAGf47704afa [2021-12-17 21:00:44,179 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 21:00:44,180 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label06.c [2021-12-17 21:00:44,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d5117c1d/8bf3219ef47941aab4339712d3651391/FLAGf47704afa [2021-12-17 21:00:44,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d5117c1d/8bf3219ef47941aab4339712d3651391 [2021-12-17 21:00:44,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 21:00:44,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 21:00:44,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 21:00:44,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 21:00:44,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 21:00:44,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 09:00:44" (1/1) ... [2021-12-17 21:00:44,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dd2f418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:00:44, skipping insertion in model container [2021-12-17 21:00:44,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 09:00:44" (1/1) ... [2021-12-17 21:00:44,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 21:00:44,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 21:00:44,958 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label06.c[26860,26873] [2021-12-17 21:00:45,000 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label06.c[29677,29690] [2021-12-17 21:00:45,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 21:00:45,693 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 21:00:45,737 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label06.c[26860,26873] [2021-12-17 21:00:45,759 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label06.c[29677,29690] [2021-12-17 21:00:46,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 21:00:46,143 INFO L208 MainTranslator]: Completed translation [2021-12-17 21:00:46,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:00:46 WrapperNode [2021-12-17 21:00:46,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 21:00:46,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 21:00:46,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 21:00:46,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 21:00:46,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:00:46" (1/1) ... [2021-12-17 21:00:46,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:00:46" (1/1) ... [2021-12-17 21:00:46,555 INFO L137 Inliner]: procedures = 39, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5281 [2021-12-17 21:00:46,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 21:00:46,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 21:00:46,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 21:00:46,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 21:00:46,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:00:46" (1/1) ... [2021-12-17 21:00:46,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:00:46" (1/1) ... [2021-12-17 21:00:46,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:00:46" (1/1) ... [2021-12-17 21:00:46,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:00:46" (1/1) ... [2021-12-17 21:00:46,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:00:46" (1/1) ... [2021-12-17 21:00:46,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:00:46" (1/1) ... [2021-12-17 21:00:46,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:00:46" (1/1) ... [2021-12-17 21:00:47,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 21:00:47,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 21:00:47,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 21:00:47,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 21:00:47,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:00:46" (1/1) ... [2021-12-17 21:00:47,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 21:00:47,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 21:00:47,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 21:00:47,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 21:00:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 21:00:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 21:00:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 21:00:47,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 21:00:47,372 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 21:00:47,373 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 21:00:50,794 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 21:00:50,815 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 21:00:50,816 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-17 21:00:50,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:00:50 BoogieIcfgContainer [2021-12-17 21:00:50,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 21:00:50,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 21:00:50,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 21:00:50,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 21:00:50,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 09:00:44" (1/3) ... [2021-12-17 21:00:50,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10785006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 09:00:50, skipping insertion in model container [2021-12-17 21:00:50,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:00:46" (2/3) ... [2021-12-17 21:00:50,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10785006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 09:00:50, skipping insertion in model container [2021-12-17 21:00:50,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:00:50" (3/3) ... [2021-12-17 21:00:50,830 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label06.c [2021-12-17 21:00:50,835 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 21:00:50,835 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 21:00:50,889 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 21:00:50,895 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 21:00:50,896 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 21:00:50,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:00:50,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-17 21:00:50,931 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:00:50,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:00:50,932 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:00:50,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:00:50,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1031297163, now seen corresponding path program 1 times [2021-12-17 21:00:50,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:00:50,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031373726] [2021-12-17 21:00:50,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:00:50,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:00:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:00:51,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:00:51,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:00:51,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031373726] [2021-12-17 21:00:51,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031373726] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:00:51,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:00:51,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 21:00:51,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241123526] [2021-12-17 21:00:51,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:00:51,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 21:00:51,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:00:51,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 21:00:51,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 21:00:51,252 INFO L87 Difference]: Start difference. First operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:00:54,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:00:54,668 INFO L93 Difference]: Finished difference Result 2614 states and 5014 transitions. [2021-12-17 21:00:54,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 21:00:54,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-17 21:00:54,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:00:54,700 INFO L225 Difference]: With dead ends: 2614 [2021-12-17 21:00:54,701 INFO L226 Difference]: Without dead ends: 1648 [2021-12-17 21:00:54,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 21:00:54,713 INFO L933 BasicCegarLoop]: 724 mSDtfsCounter, 1063 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-17 21:00:54,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1063 Valid, 735 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-17 21:00:54,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2021-12-17 21:00:54,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1648. [2021-12-17 21:00:54,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1646 states have (on average 1.649453219927096) internal successors, (2715), 1647 states have internal predecessors, (2715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:00:54,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2715 transitions. [2021-12-17 21:00:54,834 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2715 transitions. Word has length 24 [2021-12-17 21:00:54,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:00:54,835 INFO L470 AbstractCegarLoop]: Abstraction has 1648 states and 2715 transitions. [2021-12-17 21:00:54,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:00:54,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2715 transitions. [2021-12-17 21:00:54,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-17 21:00:54,841 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:00:54,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:00:54,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 21:00:54,842 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:00:54,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:00:54,844 INFO L85 PathProgramCache]: Analyzing trace with hash 815979124, now seen corresponding path program 1 times [2021-12-17 21:00:54,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:00:54,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453263057] [2021-12-17 21:00:54,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:00:54,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:00:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:00:55,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:00:55,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:00:55,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453263057] [2021-12-17 21:00:55,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453263057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:00:55,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:00:55,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 21:00:55,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599122956] [2021-12-17 21:00:55,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:00:55,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 21:00:55,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:00:55,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 21:00:55,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 21:00:55,013 INFO L87 Difference]: Start difference. First operand 1648 states and 2715 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:00:55,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:00:55,111 INFO L93 Difference]: Finished difference Result 1728 states and 2840 transitions. [2021-12-17 21:00:55,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 21:00:55,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-12-17 21:00:55,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:00:55,119 INFO L225 Difference]: With dead ends: 1728 [2021-12-17 21:00:55,119 INFO L226 Difference]: Without dead ends: 1648 [2021-12-17 21:00:55,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:00:55,121 INFO L933 BasicCegarLoop]: 1686 mSDtfsCounter, 3 mSDsluCounter, 4994 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6680 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 21:00:55,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6680 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 21:00:55,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2021-12-17 21:00:55,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1648. [2021-12-17 21:00:55,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1646 states have (on average 1.6123936816524909) internal successors, (2654), 1647 states have internal predecessors, (2654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:00:55,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2654 transitions. [2021-12-17 21:00:55,157 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2654 transitions. Word has length 46 [2021-12-17 21:00:55,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:00:55,157 INFO L470 AbstractCegarLoop]: Abstraction has 1648 states and 2654 transitions. [2021-12-17 21:00:55,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:00:55,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2654 transitions. [2021-12-17 21:00:55,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 21:00:55,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:00:55,160 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:00:55,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 21:00:55,161 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:00:55,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:00:55,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1346326019, now seen corresponding path program 1 times [2021-12-17 21:00:55,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:00:55,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637835746] [2021-12-17 21:00:55,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:00:55,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:00:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:00:55,285 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:00:55,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:00:55,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637835746] [2021-12-17 21:00:55,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637835746] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 21:00:55,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968437854] [2021-12-17 21:00:55,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:00:55,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 21:00:55,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 21:00:55,295 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 21:00:55,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 21:00:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:00:55,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 21:00:55,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 21:00:55,620 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:00:55,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 21:00:55,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968437854] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:00:55,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 21:00:55,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-17 21:00:55,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611005211] [2021-12-17 21:00:55,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:00:55,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 21:00:55,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:00:55,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 21:00:55,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-17 21:00:55,624 INFO L87 Difference]: Start difference. First operand 1648 states and 2654 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:00:58,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:00:58,711 INFO L93 Difference]: Finished difference Result 4654 states and 7581 transitions. [2021-12-17 21:00:58,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 21:00:58,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 21:00:58,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:00:58,724 INFO L225 Difference]: With dead ends: 4654 [2021-12-17 21:00:58,724 INFO L226 Difference]: Without dead ends: 3150 [2021-12-17 21:00:58,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-17 21:00:58,729 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 965 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2197 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 2197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-17 21:00:58,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [965 Valid, 663 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 2197 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-17 21:00:58,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3150 states. [2021-12-17 21:00:58,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3150 to 3150. [2021-12-17 21:00:58,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3150 states, 3148 states have (on average 1.4212198221092758) internal successors, (4474), 3149 states have internal predecessors, (4474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:00:58,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3150 states to 3150 states and 4474 transitions. [2021-12-17 21:00:58,791 INFO L78 Accepts]: Start accepts. Automaton has 3150 states and 4474 transitions. Word has length 95 [2021-12-17 21:00:58,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:00:58,794 INFO L470 AbstractCegarLoop]: Abstraction has 3150 states and 4474 transitions. [2021-12-17 21:00:58,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:00:58,794 INFO L276 IsEmpty]: Start isEmpty. Operand 3150 states and 4474 transitions. [2021-12-17 21:00:58,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-17 21:00:58,796 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:00:58,796 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:00:58,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 21:00:59,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 21:00:59,019 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:00:59,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:00:59,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1184591431, now seen corresponding path program 1 times [2021-12-17 21:00:59,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:00:59,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998909960] [2021-12-17 21:00:59,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:00:59,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:00:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:00:59,183 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:00:59,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:00:59,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998909960] [2021-12-17 21:00:59,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998909960] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:00:59,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:00:59,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 21:00:59,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526003266] [2021-12-17 21:00:59,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:00:59,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 21:00:59,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:00:59,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 21:00:59,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-17 21:00:59,189 INFO L87 Difference]: Start difference. First operand 3150 states and 4474 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:01,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:01:01,811 INFO L93 Difference]: Finished difference Result 6923 states and 9615 transitions. [2021-12-17 21:01:01,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 21:01:01,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-12-17 21:01:01,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:01:01,828 INFO L225 Difference]: With dead ends: 6923 [2021-12-17 21:01:01,828 INFO L226 Difference]: Without dead ends: 3917 [2021-12-17 21:01:01,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-17 21:01:01,839 INFO L933 BasicCegarLoop]: 885 mSDtfsCounter, 2488 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2488 SdHoareTripleChecker+Valid, 2021 SdHoareTripleChecker+Invalid, 2774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-17 21:01:01,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2488 Valid, 2021 Invalid, 2774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-17 21:01:01,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3917 states. [2021-12-17 21:01:01,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3917 to 3901. [2021-12-17 21:01:01,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3901 states, 3899 states have (on average 1.3416260579635804) internal successors, (5231), 3900 states have internal predecessors, (5231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:01,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3901 states to 3901 states and 5231 transitions. [2021-12-17 21:01:01,921 INFO L78 Accepts]: Start accepts. Automaton has 3901 states and 5231 transitions. Word has length 99 [2021-12-17 21:01:01,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:01:01,923 INFO L470 AbstractCegarLoop]: Abstraction has 3901 states and 5231 transitions. [2021-12-17 21:01:01,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:01,924 INFO L276 IsEmpty]: Start isEmpty. Operand 3901 states and 5231 transitions. [2021-12-17 21:01:01,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-17 21:01:01,925 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:01:01,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:01:01,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 21:01:01,925 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:01:01,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:01:01,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1090783836, now seen corresponding path program 1 times [2021-12-17 21:01:01,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:01:01,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370216144] [2021-12-17 21:01:01,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:01:01,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:01:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:01:02,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:01:02,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:01:02,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370216144] [2021-12-17 21:01:02,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370216144] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:01:02,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:01:02,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 21:01:02,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996996774] [2021-12-17 21:01:02,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:01:02,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 21:01:02,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:01:02,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 21:01:02,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 21:01:02,016 INFO L87 Difference]: Start difference. First operand 3901 states and 5231 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:02,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:01:02,050 INFO L93 Difference]: Finished difference Result 4047 states and 5463 transitions. [2021-12-17 21:01:02,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 21:01:02,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-17 21:01:02,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:01:02,064 INFO L225 Difference]: With dead ends: 4047 [2021-12-17 21:01:02,065 INFO L226 Difference]: Without dead ends: 3971 [2021-12-17 21:01:02,066 INFO L932 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 [2021-12-17 21:01:02,067 INFO L933 BasicCegarLoop]: 1734 mSDtfsCounter, 1550 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 21:01:02,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1550 Valid, 1853 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 21:01:02,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3971 states. [2021-12-17 21:01:02,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3971 to 3969. [2021-12-17 21:01:02,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3969 states, 3967 states have (on average 1.3461053692966978) internal successors, (5340), 3968 states have internal predecessors, (5340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:02,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3969 states to 3969 states and 5340 transitions. [2021-12-17 21:01:02,142 INFO L78 Accepts]: Start accepts. Automaton has 3969 states and 5340 transitions. Word has length 106 [2021-12-17 21:01:02,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:01:02,144 INFO L470 AbstractCegarLoop]: Abstraction has 3969 states and 5340 transitions. [2021-12-17 21:01:02,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:02,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3969 states and 5340 transitions. [2021-12-17 21:01:02,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-17 21:01:02,149 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:01:02,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:01:02,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 21:01:02,149 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:01:02,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:01:02,150 INFO L85 PathProgramCache]: Analyzing trace with hash 326222874, now seen corresponding path program 1 times [2021-12-17 21:01:02,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:01:02,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480736437] [2021-12-17 21:01:02,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:01:02,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:01:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:01:02,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:01:02,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:01:02,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480736437] [2021-12-17 21:01:02,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480736437] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:01:02,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:01:02,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 21:01:02,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539342998] [2021-12-17 21:01:02,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:01:02,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 21:01:02,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:01:02,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 21:01:02,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 21:01:02,245 INFO L87 Difference]: Start difference. First operand 3969 states and 5340 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:02,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:01:02,282 INFO L93 Difference]: Finished difference Result 4245 states and 5780 transitions. [2021-12-17 21:01:02,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 21:01:02,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-17 21:01:02,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:01:02,296 INFO L225 Difference]: With dead ends: 4245 [2021-12-17 21:01:02,297 INFO L226 Difference]: Without dead ends: 4101 [2021-12-17 21:01:02,298 INFO L932 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 [2021-12-17 21:01:02,299 INFO L933 BasicCegarLoop]: 1729 mSDtfsCounter, 1546 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 21:01:02,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1546 Valid, 1852 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 21:01:02,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4101 states. [2021-12-17 21:01:02,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4101 to 4099. [2021-12-17 21:01:02,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4099 states, 4097 states have (on average 1.3539175006102027) internal successors, (5547), 4098 states have internal predecessors, (5547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:02,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4099 states to 4099 states and 5547 transitions. [2021-12-17 21:01:02,378 INFO L78 Accepts]: Start accepts. Automaton has 4099 states and 5547 transitions. Word has length 106 [2021-12-17 21:01:02,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:01:02,379 INFO L470 AbstractCegarLoop]: Abstraction has 4099 states and 5547 transitions. [2021-12-17 21:01:02,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:02,379 INFO L276 IsEmpty]: Start isEmpty. Operand 4099 states and 5547 transitions. [2021-12-17 21:01:02,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-17 21:01:02,380 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:01:02,380 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:01:02,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 21:01:02,381 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:01:02,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:01:02,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1573731728, now seen corresponding path program 1 times [2021-12-17 21:01:02,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:01:02,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441751623] [2021-12-17 21:01:02,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:01:02,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:01:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:01:02,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:01:02,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:01:02,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441751623] [2021-12-17 21:01:02,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441751623] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:01:02,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:01:02,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 21:01:02,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216385630] [2021-12-17 21:01:02,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:01:02,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 21:01:02,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:01:02,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 21:01:02,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 21:01:02,452 INFO L87 Difference]: Start difference. First operand 4099 states and 5547 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:02,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:01:02,488 INFO L93 Difference]: Finished difference Result 4623 states and 6381 transitions. [2021-12-17 21:01:02,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 21:01:02,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-17 21:01:02,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:01:02,504 INFO L225 Difference]: With dead ends: 4623 [2021-12-17 21:01:02,504 INFO L226 Difference]: Without dead ends: 4349 [2021-12-17 21:01:02,507 INFO L932 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 [2021-12-17 21:01:02,508 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 1542 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 21:01:02,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1542 Valid, 1851 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 21:01:02,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4349 states. [2021-12-17 21:01:02,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4349 to 4347. [2021-12-17 21:01:02,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 4345 states have (on average 1.3668584579976986) internal successors, (5939), 4346 states have internal predecessors, (5939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:02,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 5939 transitions. [2021-12-17 21:01:02,601 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 5939 transitions. Word has length 106 [2021-12-17 21:01:02,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:01:02,601 INFO L470 AbstractCegarLoop]: Abstraction has 4347 states and 5939 transitions. [2021-12-17 21:01:02,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:02,602 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 5939 transitions. [2021-12-17 21:01:02,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-17 21:01:02,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:01:02,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:01:02,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 21:01:02,604 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:01:02,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:01:02,604 INFO L85 PathProgramCache]: Analyzing trace with hash 832299526, now seen corresponding path program 1 times [2021-12-17 21:01:02,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:01:02,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917549107] [2021-12-17 21:01:02,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:01:02,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:01:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:01:02,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:01:02,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:01:02,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917549107] [2021-12-17 21:01:02,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917549107] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:01:02,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:01:02,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 21:01:02,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968157006] [2021-12-17 21:01:02,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:01:02,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 21:01:02,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:01:02,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 21:01:02,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 21:01:02,672 INFO L87 Difference]: Start difference. First operand 4347 states and 5939 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:02,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:01:02,720 INFO L93 Difference]: Finished difference Result 5343 states and 7517 transitions. [2021-12-17 21:01:02,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 21:01:02,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-17 21:01:02,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:01:02,751 INFO L225 Difference]: With dead ends: 5343 [2021-12-17 21:01:02,751 INFO L226 Difference]: Without dead ends: 4821 [2021-12-17 21:01:02,793 INFO L932 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 [2021-12-17 21:01:02,794 INFO L933 BasicCegarLoop]: 1667 mSDtfsCounter, 1522 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 21:01:02,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1522 Valid, 1814 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 21:01:02,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4821 states. [2021-12-17 21:01:02,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4821 to 4819. [2021-12-17 21:01:02,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4819 states, 4817 states have (on average 1.3865476437616775) internal successors, (6679), 4818 states have internal predecessors, (6679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:02,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4819 states to 4819 states and 6679 transitions. [2021-12-17 21:01:02,903 INFO L78 Accepts]: Start accepts. Automaton has 4819 states and 6679 transitions. Word has length 106 [2021-12-17 21:01:02,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:01:02,904 INFO L470 AbstractCegarLoop]: Abstraction has 4819 states and 6679 transitions. [2021-12-17 21:01:02,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:02,904 INFO L276 IsEmpty]: Start isEmpty. Operand 4819 states and 6679 transitions. [2021-12-17 21:01:02,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-17 21:01:02,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:01:02,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:01:02,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 21:01:02,906 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:01:02,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:01:02,907 INFO L85 PathProgramCache]: Analyzing trace with hash 2050284924, now seen corresponding path program 1 times [2021-12-17 21:01:02,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:01:02,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572520175] [2021-12-17 21:01:02,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:01:02,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:01:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:01:03,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:01:03,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:01:03,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572520175] [2021-12-17 21:01:03,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572520175] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:01:03,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:01:03,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 21:01:03,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32315746] [2021-12-17 21:01:03,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:01:03,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 21:01:03,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:01:03,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 21:01:03,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-17 21:01:03,024 INFO L87 Difference]: Start difference. First operand 4819 states and 6679 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:03,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:01:03,691 INFO L93 Difference]: Finished difference Result 20723 states and 31783 transitions. [2021-12-17 21:01:03,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 21:01:03,692 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-17 21:01:03,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:01:03,736 INFO L225 Difference]: With dead ends: 20723 [2021-12-17 21:01:03,737 INFO L226 Difference]: Without dead ends: 19729 [2021-12-17 21:01:03,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-12-17 21:01:03,750 INFO L933 BasicCegarLoop]: 1621 mSDtfsCounter, 15549 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15549 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 21:01:03,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15549 Valid, 3647 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 21:01:03,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19729 states. [2021-12-17 21:01:04,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19729 to 5811. [2021-12-17 21:01:04,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5811 states, 5809 states have (on average 1.4141848855224652) internal successors, (8215), 5810 states have internal predecessors, (8215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:04,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5811 states to 5811 states and 8215 transitions. [2021-12-17 21:01:04,077 INFO L78 Accepts]: Start accepts. Automaton has 5811 states and 8215 transitions. Word has length 106 [2021-12-17 21:01:04,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:01:04,078 INFO L470 AbstractCegarLoop]: Abstraction has 5811 states and 8215 transitions. [2021-12-17 21:01:04,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:04,078 INFO L276 IsEmpty]: Start isEmpty. Operand 5811 states and 8215 transitions. [2021-12-17 21:01:04,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-17 21:01:04,079 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:01:04,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:01:04,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 21:01:04,080 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:01:04,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:01:04,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1813103660, now seen corresponding path program 1 times [2021-12-17 21:01:04,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:01:04,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263427163] [2021-12-17 21:01:04,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:01:04,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:01:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:01:04,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:01:04,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:01:04,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263427163] [2021-12-17 21:01:04,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263427163] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:01:04,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:01:04,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 21:01:04,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426078010] [2021-12-17 21:01:04,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:01:04,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 21:01:04,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:01:04,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 21:01:04,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 21:01:04,140 INFO L87 Difference]: Start difference. First operand 5811 states and 8215 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:04,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:01:04,299 INFO L93 Difference]: Finished difference Result 8753 states and 12811 transitions. [2021-12-17 21:01:04,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 21:01:04,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-17 21:01:04,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:01:04,311 INFO L225 Difference]: With dead ends: 8753 [2021-12-17 21:01:04,311 INFO L226 Difference]: Without dead ends: 6767 [2021-12-17 21:01:04,315 INFO L932 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 [2021-12-17 21:01:04,316 INFO L933 BasicCegarLoop]: 1648 mSDtfsCounter, 1514 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 21:01:04,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 1764 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 21:01:04,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6767 states. [2021-12-17 21:01:04,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6767 to 6765. [2021-12-17 21:01:04,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6765 states, 6763 states have (on average 1.4314653260387402) internal successors, (9681), 6764 states have internal predecessors, (9681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:04,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6765 states to 6765 states and 9681 transitions. [2021-12-17 21:01:04,501 INFO L78 Accepts]: Start accepts. Automaton has 6765 states and 9681 transitions. Word has length 108 [2021-12-17 21:01:04,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:01:04,502 INFO L470 AbstractCegarLoop]: Abstraction has 6765 states and 9681 transitions. [2021-12-17 21:01:04,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:04,502 INFO L276 IsEmpty]: Start isEmpty. Operand 6765 states and 9681 transitions. [2021-12-17 21:01:04,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-17 21:01:04,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:01:04,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:01:04,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 21:01:04,504 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:01:04,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:01:04,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1879597172, now seen corresponding path program 1 times [2021-12-17 21:01:04,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:01:04,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002986533] [2021-12-17 21:01:04,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:01:04,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:01:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:01:04,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:01:04,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:01:04,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002986533] [2021-12-17 21:01:04,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002986533] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:01:04,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:01:04,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 21:01:04,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757229145] [2021-12-17 21:01:04,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:01:04,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 21:01:04,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:01:04,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 21:01:04,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-17 21:01:04,768 INFO L87 Difference]: Start difference. First operand 6765 states and 9681 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:05,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:01:05,258 INFO L93 Difference]: Finished difference Result 9705 states and 14251 transitions. [2021-12-17 21:01:05,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 21:01:05,259 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-17 21:01:05,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:01:05,271 INFO L225 Difference]: With dead ends: 9705 [2021-12-17 21:01:05,271 INFO L226 Difference]: Without dead ends: 6767 [2021-12-17 21:01:05,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-12-17 21:01:05,276 INFO L933 BasicCegarLoop]: 1658 mSDtfsCounter, 11172 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11172 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 21:01:05,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11172 Valid, 2487 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 21:01:05,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6767 states. [2021-12-17 21:01:05,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6767 to 6765. [2021-12-17 21:01:05,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6765 states, 6763 states have (on average 1.4279166050569274) internal successors, (9657), 6764 states have internal predecessors, (9657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:05,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6765 states to 6765 states and 9657 transitions. [2021-12-17 21:01:05,500 INFO L78 Accepts]: Start accepts. Automaton has 6765 states and 9657 transitions. Word has length 108 [2021-12-17 21:01:05,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:01:05,500 INFO L470 AbstractCegarLoop]: Abstraction has 6765 states and 9657 transitions. [2021-12-17 21:01:05,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:05,501 INFO L276 IsEmpty]: Start isEmpty. Operand 6765 states and 9657 transitions. [2021-12-17 21:01:05,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-17 21:01:05,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:01:05,502 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:01:05,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 21:01:05,502 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:01:05,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:01:05,503 INFO L85 PathProgramCache]: Analyzing trace with hash 621051568, now seen corresponding path program 1 times [2021-12-17 21:01:05,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:01:05,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436486278] [2021-12-17 21:01:05,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:01:05,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:01:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:01:05,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:01:05,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:01:05,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436486278] [2021-12-17 21:01:05,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436486278] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:01:05,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:01:05,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 21:01:05,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857051252] [2021-12-17 21:01:05,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:01:05,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 21:01:05,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:01:05,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 21:01:05,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 21:01:05,549 INFO L87 Difference]: Start difference. First operand 6765 states and 9657 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:05,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:01:05,771 INFO L93 Difference]: Finished difference Result 12353 states and 18267 transitions. [2021-12-17 21:01:05,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 21:01:05,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-17 21:01:05,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:01:05,789 INFO L225 Difference]: With dead ends: 12353 [2021-12-17 21:01:05,790 INFO L226 Difference]: Without dead ends: 9415 [2021-12-17 21:01:05,796 INFO L932 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 [2021-12-17 21:01:05,797 INFO L933 BasicCegarLoop]: 1680 mSDtfsCounter, 1526 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 21:01:05,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1526 Valid, 1823 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 21:01:05,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9415 states. [2021-12-17 21:01:06,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9415 to 9413. [2021-12-17 21:01:06,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9413 states, 9411 states have (on average 1.452874296036553) internal successors, (13673), 9412 states have internal predecessors, (13673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:06,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9413 states to 9413 states and 13673 transitions. [2021-12-17 21:01:06,071 INFO L78 Accepts]: Start accepts. Automaton has 9413 states and 13673 transitions. Word has length 108 [2021-12-17 21:01:06,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:01:06,072 INFO L470 AbstractCegarLoop]: Abstraction has 9413 states and 13673 transitions. [2021-12-17 21:01:06,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:06,072 INFO L276 IsEmpty]: Start isEmpty. Operand 9413 states and 13673 transitions. [2021-12-17 21:01:06,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-17 21:01:06,074 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:01:06,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:01:06,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 21:01:06,074 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:01:06,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:01:06,075 INFO L85 PathProgramCache]: Analyzing trace with hash 894739280, now seen corresponding path program 1 times [2021-12-17 21:01:06,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:01:06,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848538336] [2021-12-17 21:01:06,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:01:06,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:01:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:01:06,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:01:06,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:01:06,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848538336] [2021-12-17 21:01:06,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848538336] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:01:06,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:01:06,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 21:01:06,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908888341] [2021-12-17 21:01:06,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:01:06,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 21:01:06,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:01:06,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 21:01:06,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 21:01:06,131 INFO L87 Difference]: Start difference. First operand 9413 states and 13673 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:06,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:01:06,587 INFO L93 Difference]: Finished difference Result 20009 states and 29835 transitions. [2021-12-17 21:01:06,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 21:01:06,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-17 21:01:06,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:01:06,619 INFO L225 Difference]: With dead ends: 20009 [2021-12-17 21:01:06,620 INFO L226 Difference]: Without dead ends: 14423 [2021-12-17 21:01:06,631 INFO L932 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 [2021-12-17 21:01:06,632 INFO L933 BasicCegarLoop]: 1693 mSDtfsCounter, 1530 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 21:01:06,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1530 Valid, 1832 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 21:01:06,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14423 states. [2021-12-17 21:01:07,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14423 to 14421. [2021-12-17 21:01:07,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14421 states, 14419 states have (on average 1.468687148900756) internal successors, (21177), 14420 states have internal predecessors, (21177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:07,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14421 states to 14421 states and 21177 transitions. [2021-12-17 21:01:07,253 INFO L78 Accepts]: Start accepts. Automaton has 14421 states and 21177 transitions. Word has length 108 [2021-12-17 21:01:07,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:01:07,254 INFO L470 AbstractCegarLoop]: Abstraction has 14421 states and 21177 transitions. [2021-12-17 21:01:07,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:07,254 INFO L276 IsEmpty]: Start isEmpty. Operand 14421 states and 21177 transitions. [2021-12-17 21:01:07,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-17 21:01:07,255 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:01:07,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:01:07,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 21:01:07,256 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:01:07,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:01:07,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1581156368, now seen corresponding path program 1 times [2021-12-17 21:01:07,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:01:07,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926019755] [2021-12-17 21:01:07,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:01:07,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:01:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:01:07,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:01:07,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:01:07,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926019755] [2021-12-17 21:01:07,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926019755] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:01:07,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:01:07,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 21:01:07,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004154883] [2021-12-17 21:01:07,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:01:07,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 21:01:07,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:01:07,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 21:01:07,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 21:01:07,321 INFO L87 Difference]: Start difference. First operand 14421 states and 21177 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:08,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:01:08,067 INFO L93 Difference]: Finished difference Result 34457 states and 51387 transitions. [2021-12-17 21:01:08,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 21:01:08,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-17 21:01:08,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:01:08,109 INFO L225 Difference]: With dead ends: 34457 [2021-12-17 21:01:08,109 INFO L226 Difference]: Without dead ends: 23863 [2021-12-17 21:01:08,128 INFO L932 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 [2021-12-17 21:01:08,129 INFO L933 BasicCegarLoop]: 1706 mSDtfsCounter, 1534 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 21:01:08,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1534 Valid, 1841 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 21:01:08,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23863 states. [2021-12-17 21:01:09,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23863 to 23861. [2021-12-17 21:01:09,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23861 states, 23859 states have (on average 1.4723584391634184) internal successors, (35129), 23860 states have internal predecessors, (35129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:09,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23861 states to 23861 states and 35129 transitions. [2021-12-17 21:01:09,070 INFO L78 Accepts]: Start accepts. Automaton has 23861 states and 35129 transitions. Word has length 108 [2021-12-17 21:01:09,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:01:09,070 INFO L470 AbstractCegarLoop]: Abstraction has 23861 states and 35129 transitions. [2021-12-17 21:01:09,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:09,071 INFO L276 IsEmpty]: Start isEmpty. Operand 23861 states and 35129 transitions. [2021-12-17 21:01:09,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-17 21:01:09,072 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:01:09,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:01:09,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 21:01:09,072 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:01:09,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:01:09,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1401750384, now seen corresponding path program 1 times [2021-12-17 21:01:09,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:01:09,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389150077] [2021-12-17 21:01:09,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:01:09,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:01:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:01:09,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:01:09,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:01:09,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389150077] [2021-12-17 21:01:09,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389150077] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:01:09,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:01:09,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 21:01:09,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339176420] [2021-12-17 21:01:09,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:01:09,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 21:01:09,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:01:09,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 21:01:09,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 21:01:09,143 INFO L87 Difference]: Start difference. First operand 23861 states and 35129 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:10,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:01:10,393 INFO L93 Difference]: Finished difference Result 61625 states and 91323 transitions. [2021-12-17 21:01:10,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 21:01:10,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-17 21:01:10,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:01:10,454 INFO L225 Difference]: With dead ends: 61625 [2021-12-17 21:01:10,454 INFO L226 Difference]: Without dead ends: 41591 [2021-12-17 21:01:10,482 INFO L932 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 [2021-12-17 21:01:10,483 INFO L933 BasicCegarLoop]: 1719 mSDtfsCounter, 1538 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 21:01:10,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1538 Valid, 1850 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 21:01:10,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41591 states. [2021-12-17 21:01:12,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41591 to 41589. [2021-12-17 21:01:12,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41589 states, 41587 states have (on average 1.4649048981652921) internal successors, (60921), 41588 states have internal predecessors, (60921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:12,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41589 states to 41589 states and 60921 transitions. [2021-12-17 21:01:12,426 INFO L78 Accepts]: Start accepts. Automaton has 41589 states and 60921 transitions. Word has length 108 [2021-12-17 21:01:12,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:01:12,426 INFO L470 AbstractCegarLoop]: Abstraction has 41589 states and 60921 transitions. [2021-12-17 21:01:12,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:12,426 INFO L276 IsEmpty]: Start isEmpty. Operand 41589 states and 60921 transitions. [2021-12-17 21:01:12,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-17 21:01:12,428 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:01:12,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:01:12,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 21:01:12,429 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:01:12,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:01:12,430 INFO L85 PathProgramCache]: Analyzing trace with hash 2018214719, now seen corresponding path program 1 times [2021-12-17 21:01:12,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:01:12,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765425604] [2021-12-17 21:01:12,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:01:12,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:01:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:01:12,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:01:12,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:01:12,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765425604] [2021-12-17 21:01:12,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765425604] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:01:12,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:01:12,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 21:01:12,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174131452] [2021-12-17 21:01:12,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:01:12,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 21:01:12,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:01:12,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 21:01:12,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 21:01:12,556 INFO L87 Difference]: Start difference. First operand 41589 states and 60921 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:15,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:01:15,580 INFO L93 Difference]: Finished difference Result 73756 states and 107498 transitions. [2021-12-17 21:01:15,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 21:01:15,581 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-12-17 21:01:15,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:01:15,708 INFO L225 Difference]: With dead ends: 73756 [2021-12-17 21:01:15,709 INFO L226 Difference]: Without dead ends: 73754 [2021-12-17 21:01:15,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-17 21:01:15,740 INFO L933 BasicCegarLoop]: 1666 mSDtfsCounter, 934 mSDsluCounter, 9368 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 11034 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 21:01:15,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [934 Valid, 11034 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 21:01:15,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73754 states. [2021-12-17 21:01:17,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73754 to 43125. [2021-12-17 21:01:17,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43125 states, 43123 states have (on average 1.4453771769125525) internal successors, (62329), 43124 states have internal predecessors, (62329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:18,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43125 states to 43125 states and 62329 transitions. [2021-12-17 21:01:18,032 INFO L78 Accepts]: Start accepts. Automaton has 43125 states and 62329 transitions. Word has length 109 [2021-12-17 21:01:18,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:01:18,032 INFO L470 AbstractCegarLoop]: Abstraction has 43125 states and 62329 transitions. [2021-12-17 21:01:18,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:18,033 INFO L276 IsEmpty]: Start isEmpty. Operand 43125 states and 62329 transitions. [2021-12-17 21:01:18,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-17 21:01:18,053 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:01:18,053 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:01:18,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 21:01:18,054 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:01:18,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:01:18,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1243757929, now seen corresponding path program 1 times [2021-12-17 21:01:18,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:01:18,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510590116] [2021-12-17 21:01:18,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:01:18,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:01:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:01:18,175 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 21:01:18,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:01:18,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510590116] [2021-12-17 21:01:18,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510590116] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:01:18,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:01:18,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 21:01:18,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580752810] [2021-12-17 21:01:18,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:01:18,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 21:01:18,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:01:18,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 21:01:18,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 21:01:18,178 INFO L87 Difference]: Start difference. First operand 43125 states and 62329 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 21:01:32,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:01:32,088 INFO L93 Difference]: Finished difference Result 365063 states and 530626 transitions. [2021-12-17 21:01:32,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 21:01:32,089 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-12-17 21:01:32,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:01:32,845 INFO L225 Difference]: With dead ends: 365063 [2021-12-17 21:01:32,845 INFO L226 Difference]: Without dead ends: 325765 [2021-12-17 21:01:32,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-17 21:01:32,952 INFO L933 BasicCegarLoop]: 1738 mSDtfsCounter, 13254 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13254 SdHoareTripleChecker+Valid, 4427 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 21:01:32,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13254 Valid, 4427 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 21:01:33,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325765 states.