./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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/systemc/token_ring.05.cil-1.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 a75784c0f203c4a6f14019aef9d9a89ba63a0efbe594dc5cdecfb5d06e7619f2 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 11:43:59,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 11:43:59,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 11:44:00,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 11:44:00,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 11:44:00,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 11:44:00,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 11:44:00,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 11:44:00,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 11:44:00,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 11:44:00,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 11:44:00,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 11:44:00,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 11:44:00,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 11:44:00,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 11:44:00,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 11:44:00,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 11:44:00,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 11:44:00,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 11:44:00,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 11:44:00,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 11:44:00,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 11:44:00,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 11:44:00,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 11:44:00,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 11:44:00,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 11:44:00,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 11:44:00,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 11:44:00,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 11:44:00,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 11:44:00,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 11:44:00,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 11:44:00,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 11:44:00,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 11:44:00,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 11:44:00,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 11:44:00,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 11:44:00,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 11:44:00,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 11:44:00,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 11:44:00,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 11:44:00,065 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 11:44:00,092 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 11:44:00,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 11:44:00,093 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 11:44:00,093 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 11:44:00,094 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 11:44:00,094 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 11:44:00,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 11:44:00,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 11:44:00,095 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 11:44:00,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 11:44:00,096 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 11:44:00,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 11:44:00,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 11:44:00,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 11:44:00,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 11:44:00,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 11:44:00,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 11:44:00,097 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 11:44:00,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 11:44:00,097 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 11:44:00,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 11:44:00,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 11:44:00,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 11:44:00,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 11:44:00,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:44:00,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 11:44:00,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 11:44:00,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 11:44:00,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 11:44:00,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 11:44:00,099 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 11:44:00,099 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 11:44:00,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 11:44:00,099 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 11:44:00,100 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a75784c0f203c4a6f14019aef9d9a89ba63a0efbe594dc5cdecfb5d06e7619f2 [2021-12-22 11:44:00,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 11:44:00,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 11:44:00,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 11:44:00,328 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 11:44:00,328 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 11:44:00,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.05.cil-1.c [2021-12-22 11:44:00,372 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bc0eead2/f7b8efb2b2154c34a99ed12a15e05acf/FLAGc1f00787c [2021-12-22 11:44:00,796 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 11:44:00,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.05.cil-1.c [2021-12-22 11:44:00,809 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bc0eead2/f7b8efb2b2154c34a99ed12a15e05acf/FLAGc1f00787c [2021-12-22 11:44:00,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bc0eead2/f7b8efb2b2154c34a99ed12a15e05acf [2021-12-22 11:44:00,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 11:44:00,825 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 11:44:00,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 11:44:00,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 11:44:00,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 11:44:00,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:44:00" (1/1) ... [2021-12-22 11:44:00,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc79ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:44:00, skipping insertion in model container [2021-12-22 11:44:00,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:44:00" (1/1) ... [2021-12-22 11:44:00,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 11:44:00,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 11:44:01,019 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/systemc/token_ring.05.cil-1.c[671,684] [2021-12-22 11:44:01,095 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:44:01,110 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 11:44:01,119 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/systemc/token_ring.05.cil-1.c[671,684] [2021-12-22 11:44:01,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:44:01,166 INFO L208 MainTranslator]: Completed translation [2021-12-22 11:44:01,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:44:01 WrapperNode [2021-12-22 11:44:01,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 11:44:01,167 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 11:44:01,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 11:44:01,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 11:44:01,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:44:01" (1/1) ... [2021-12-22 11:44:01,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:44:01" (1/1) ... [2021-12-22 11:44:01,215 INFO L137 Inliner]: procedures = 38, calls = 46, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 447 [2021-12-22 11:44:01,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 11:44:01,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 11:44:01,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 11:44:01,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 11:44:01,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:44:01" (1/1) ... [2021-12-22 11:44:01,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:44:01" (1/1) ... [2021-12-22 11:44:01,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:44:01" (1/1) ... [2021-12-22 11:44:01,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:44:01" (1/1) ... [2021-12-22 11:44:01,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:44:01" (1/1) ... [2021-12-22 11:44:01,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:44:01" (1/1) ... [2021-12-22 11:44:01,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:44:01" (1/1) ... [2021-12-22 11:44:01,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 11:44:01,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 11:44:01,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 11:44:01,242 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 11:44:01,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:44:01" (1/1) ... [2021-12-22 11:44:01,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:44:01,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:44:01,266 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) [2021-12-22 11:44:01,267 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 [2021-12-22 11:44:01,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 11:44:01,293 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-22 11:44:01,293 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-22 11:44:01,293 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-22 11:44:01,294 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-22 11:44:01,294 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-22 11:44:01,294 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-22 11:44:01,294 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-22 11:44:01,294 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-22 11:44:01,294 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-22 11:44:01,294 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-22 11:44:01,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 11:44:01,295 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-22 11:44:01,295 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-22 11:44:01,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 11:44:01,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 11:44:01,356 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 11:44:01,357 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 11:44:01,785 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 11:44:01,794 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 11:44:01,794 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-22 11:44:01,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:44:01 BoogieIcfgContainer [2021-12-22 11:44:01,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 11:44:01,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 11:44:01,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 11:44:01,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 11:44:01,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:44:00" (1/3) ... [2021-12-22 11:44:01,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d760a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:44:01, skipping insertion in model container [2021-12-22 11:44:01,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:44:01" (2/3) ... [2021-12-22 11:44:01,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d760a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:44:01, skipping insertion in model container [2021-12-22 11:44:01,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:44:01" (3/3) ... [2021-12-22 11:44:01,803 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.05.cil-1.c [2021-12-22 11:44:01,807 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 11:44:01,807 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 11:44:01,847 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 11:44:01,852 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 [2021-12-22 11:44:01,852 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 11:44:01,868 INFO L276 IsEmpty]: Start isEmpty. Operand has 207 states, 180 states have (on average 1.6222222222222222) internal successors, (292), 182 states have internal predecessors, (292), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-22 11:44:01,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-22 11:44:01,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:44:01,876 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] [2021-12-22 11:44:01,877 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:44:01,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:44:01,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1431654202, now seen corresponding path program 1 times [2021-12-22 11:44:01,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:44:01,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623130463] [2021-12-22 11:44:01,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:44:01,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:44:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:02,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 11:44:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:02,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 11:44:02,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:02,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 11:44:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:02,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 11:44:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:02,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:44:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:02,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:44:02,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:44:02,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623130463] [2021-12-22 11:44:02,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623130463] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:44:02,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:44:02,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 11:44:02,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691726895] [2021-12-22 11:44:02,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:44:02,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 11:44:02,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:44:02,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 11:44:02,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 11:44:02,306 INFO L87 Difference]: Start difference. First operand has 207 states, 180 states have (on average 1.6222222222222222) internal successors, (292), 182 states have internal predecessors, (292), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 11:44:03,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:44:03,405 INFO L93 Difference]: Finished difference Result 727 states and 1179 transitions. [2021-12-22 11:44:03,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 11:44:03,407 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2021-12-22 11:44:03,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:44:03,422 INFO L225 Difference]: With dead ends: 727 [2021-12-22 11:44:03,422 INFO L226 Difference]: Without dead ends: 525 [2021-12-22 11:44:03,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-22 11:44:03,428 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 753 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 11:44:03,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 941 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 11:44:03,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-12-22 11:44:03,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 396. [2021-12-22 11:44:03,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 349 states have (on average 1.5444126074498568) internal successors, (539), 351 states have internal predecessors, (539), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2021-12-22 11:44:03,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 608 transitions. [2021-12-22 11:44:03,486 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 608 transitions. Word has length 100 [2021-12-22 11:44:03,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:44:03,487 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 608 transitions. [2021-12-22 11:44:03,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 11:44:03,487 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 608 transitions. [2021-12-22 11:44:03,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-22 11:44:03,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:44:03,490 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] [2021-12-22 11:44:03,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 11:44:03,490 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:44:03,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:44:03,491 INFO L85 PathProgramCache]: Analyzing trace with hash -285230402, now seen corresponding path program 1 times [2021-12-22 11:44:03,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:44:03,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994327651] [2021-12-22 11:44:03,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:44:03,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:44:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:03,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 11:44:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:03,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 11:44:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:03,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 11:44:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:03,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 11:44:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:03,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:44:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:03,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:44:03,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:44:03,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994327651] [2021-12-22 11:44:03,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994327651] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:44:03,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:44:03,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:44:03,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151427079] [2021-12-22 11:44:03,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:44:03,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:44:03,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:44:03,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:44:03,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:44:03,616 INFO L87 Difference]: Start difference. First operand 396 states and 608 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 11:44:04,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:44:04,827 INFO L93 Difference]: Finished difference Result 1172 states and 1826 transitions. [2021-12-22 11:44:04,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 11:44:04,828 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2021-12-22 11:44:04,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:44:04,832 INFO L225 Difference]: With dead ends: 1172 [2021-12-22 11:44:04,832 INFO L226 Difference]: Without dead ends: 789 [2021-12-22 11:44:04,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 11:44:04,835 INFO L933 BasicCegarLoop]: 506 mSDtfsCounter, 750 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:44:04,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [762 Valid, 1531 Invalid, 1559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 11:44:04,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2021-12-22 11:44:04,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 577. [2021-12-22 11:44:04,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 509 states have (on average 1.536345776031434) internal successors, (782), 512 states have internal predecessors, (782), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2021-12-22 11:44:04,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 881 transitions. [2021-12-22 11:44:04,887 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 881 transitions. Word has length 100 [2021-12-22 11:44:04,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:44:04,887 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 881 transitions. [2021-12-22 11:44:04,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 11:44:04,888 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 881 transitions. [2021-12-22 11:44:04,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-22 11:44:04,894 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:44:04,894 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] [2021-12-22 11:44:04,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 11:44:04,895 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:44:04,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:44:04,895 INFO L85 PathProgramCache]: Analyzing trace with hash 2130605948, now seen corresponding path program 1 times [2021-12-22 11:44:04,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:44:04,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540746055] [2021-12-22 11:44:04,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:44:04,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:44:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:04,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 11:44:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:04,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 11:44:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:04,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 11:44:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:04,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 11:44:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:05,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:44:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:05,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:44:05,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:44:05,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540746055] [2021-12-22 11:44:05,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540746055] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:44:05,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:44:05,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:44:05,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051384229] [2021-12-22 11:44:05,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:44:05,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:44:05,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:44:05,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:44:05,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:44:05,013 INFO L87 Difference]: Start difference. First operand 577 states and 881 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 11:44:06,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:44:06,161 INFO L93 Difference]: Finished difference Result 1846 states and 2867 transitions. [2021-12-22 11:44:06,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 11:44:06,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2021-12-22 11:44:06,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:44:06,168 INFO L225 Difference]: With dead ends: 1846 [2021-12-22 11:44:06,168 INFO L226 Difference]: Without dead ends: 1282 [2021-12-22 11:44:06,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 11:44:06,170 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 747 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 11:44:06,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [759 Valid, 1519 Invalid, 1568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 11:44:06,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2021-12-22 11:44:06,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 940. [2021-12-22 11:44:06,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 830 states have (on average 1.5289156626506024) internal successors, (1269), 835 states have internal predecessors, (1269), 75 states have call successors, (75), 30 states have call predecessors, (75), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2021-12-22 11:44:06,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1432 transitions. [2021-12-22 11:44:06,222 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1432 transitions. Word has length 100 [2021-12-22 11:44:06,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:44:06,223 INFO L470 AbstractCegarLoop]: Abstraction has 940 states and 1432 transitions. [2021-12-22 11:44:06,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 11:44:06,223 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1432 transitions. [2021-12-22 11:44:06,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-22 11:44:06,241 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:44:06,241 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] [2021-12-22 11:44:06,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 11:44:06,241 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:44:06,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:44:06,242 INFO L85 PathProgramCache]: Analyzing trace with hash -839505154, now seen corresponding path program 1 times [2021-12-22 11:44:06,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:44:06,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398854071] [2021-12-22 11:44:06,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:44:06,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:44:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:06,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 11:44:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:06,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 11:44:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:06,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 11:44:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:06,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 11:44:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:06,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:44:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:06,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:44:06,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:44:06,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398854071] [2021-12-22 11:44:06,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398854071] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:44:06,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:44:06,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:44:06,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009140378] [2021-12-22 11:44:06,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:44:06,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:44:06,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:44:06,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:44:06,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:44:06,330 INFO L87 Difference]: Start difference. First operand 940 states and 1432 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 11:44:07,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:44:07,507 INFO L93 Difference]: Finished difference Result 3145 states and 4866 transitions. [2021-12-22 11:44:07,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 11:44:07,508 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2021-12-22 11:44:07,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:44:07,517 INFO L225 Difference]: With dead ends: 3145 [2021-12-22 11:44:07,517 INFO L226 Difference]: Without dead ends: 2218 [2021-12-22 11:44:07,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 11:44:07,521 INFO L933 BasicCegarLoop]: 494 mSDtfsCounter, 743 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 11:44:07,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 1515 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1499 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 11:44:07,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2021-12-22 11:44:07,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 1667. [2021-12-22 11:44:07,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1473 states have (on average 1.5227427019687712) internal successors, (2243), 1482 states have internal predecessors, (2243), 131 states have call successors, (131), 54 states have call predecessors, (131), 62 states have return successors, (166), 138 states have call predecessors, (166), 131 states have call successors, (166) [2021-12-22 11:44:07,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2540 transitions. [2021-12-22 11:44:07,592 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2540 transitions. Word has length 100 [2021-12-22 11:44:07,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:44:07,592 INFO L470 AbstractCegarLoop]: Abstraction has 1667 states and 2540 transitions. [2021-12-22 11:44:07,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 11:44:07,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2540 transitions. [2021-12-22 11:44:07,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-22 11:44:07,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:44:07,594 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] [2021-12-22 11:44:07,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 11:44:07,595 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:44:07,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:44:07,595 INFO L85 PathProgramCache]: Analyzing trace with hash 727252796, now seen corresponding path program 1 times [2021-12-22 11:44:07,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:44:07,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799479650] [2021-12-22 11:44:07,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:44:07,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:44:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:07,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 11:44:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:07,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 11:44:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:07,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 11:44:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:07,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 11:44:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:07,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:44:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:07,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:44:07,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:44:07,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799479650] [2021-12-22 11:44:07,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799479650] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:44:07,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:44:07,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:44:07,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818176473] [2021-12-22 11:44:07,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:44:07,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:44:07,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:44:07,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:44:07,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:44:07,697 INFO L87 Difference]: Start difference. First operand 1667 states and 2540 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 11:44:08,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:44:08,848 INFO L93 Difference]: Finished difference Result 5742 states and 8880 transitions. [2021-12-22 11:44:08,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 11:44:08,849 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2021-12-22 11:44:08,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:44:08,862 INFO L225 Difference]: With dead ends: 5742 [2021-12-22 11:44:08,863 INFO L226 Difference]: Without dead ends: 4088 [2021-12-22 11:44:08,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 11:44:08,867 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 742 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 11:44:08,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 1509 Invalid, 1558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1491 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 11:44:08,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4088 states. [2021-12-22 11:44:08,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4088 to 3126. [2021-12-22 11:44:08,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3126 states, 2764 states have (on average 1.518451519536903) internal successors, (4197), 2781 states have internal predecessors, (4197), 243 states have call successors, (243), 102 states have call predecessors, (243), 118 states have return successors, (340), 258 states have call predecessors, (340), 243 states have call successors, (340) [2021-12-22 11:44:08,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3126 states to 3126 states and 4780 transitions. [2021-12-22 11:44:08,977 INFO L78 Accepts]: Start accepts. Automaton has 3126 states and 4780 transitions. Word has length 100 [2021-12-22 11:44:08,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:44:08,978 INFO L470 AbstractCegarLoop]: Abstraction has 3126 states and 4780 transitions. [2021-12-22 11:44:08,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 11:44:08,978 INFO L276 IsEmpty]: Start isEmpty. Operand 3126 states and 4780 transitions. [2021-12-22 11:44:08,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-22 11:44:08,988 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:44:08,988 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] [2021-12-22 11:44:08,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 11:44:08,989 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:44:08,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:44:08,989 INFO L85 PathProgramCache]: Analyzing trace with hash -330585282, now seen corresponding path program 1 times [2021-12-22 11:44:08,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:44:08,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666926033] [2021-12-22 11:44:08,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:44:08,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:44:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:09,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 11:44:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:09,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 11:44:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:09,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 11:44:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:09,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 11:44:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:09,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:44:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:09,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:44:09,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:44:09,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666926033] [2021-12-22 11:44:09,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666926033] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:44:09,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:44:09,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:44:09,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865676171] [2021-12-22 11:44:09,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:44:09,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:44:09,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:44:09,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:44:09,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:44:09,075 INFO L87 Difference]: Start difference. First operand 3126 states and 4780 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 11:44:10,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:44:10,370 INFO L93 Difference]: Finished difference Result 12184 states and 18828 transitions. [2021-12-22 11:44:10,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 11:44:10,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2021-12-22 11:44:10,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:44:10,406 INFO L225 Difference]: With dead ends: 12184 [2021-12-22 11:44:10,407 INFO L226 Difference]: Without dead ends: 9071 [2021-12-22 11:44:10,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 11:44:10,419 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 1007 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 11:44:10,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1025 Valid, 1060 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 11:44:10,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9071 states. [2021-12-22 11:44:10,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9071 to 6026. [2021-12-22 11:44:10,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6026 states, 5344 states have (on average 1.5203967065868262) internal successors, (8125), 5377 states have internal predecessors, (8125), 451 states have call successors, (451), 198 states have call predecessors, (451), 230 states have return successors, (726), 482 states have call predecessors, (726), 451 states have call successors, (726) [2021-12-22 11:44:10,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6026 states to 6026 states and 9302 transitions. [2021-12-22 11:44:10,715 INFO L78 Accepts]: Start accepts. Automaton has 6026 states and 9302 transitions. Word has length 100 [2021-12-22 11:44:10,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:44:10,715 INFO L470 AbstractCegarLoop]: Abstraction has 6026 states and 9302 transitions. [2021-12-22 11:44:10,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 11:44:10,716 INFO L276 IsEmpty]: Start isEmpty. Operand 6026 states and 9302 transitions. [2021-12-22 11:44:10,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-22 11:44:10,721 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:44:10,721 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] [2021-12-22 11:44:10,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 11:44:10,722 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:44:10,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:44:10,722 INFO L85 PathProgramCache]: Analyzing trace with hash -90345536, now seen corresponding path program 1 times [2021-12-22 11:44:10,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:44:10,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362506066] [2021-12-22 11:44:10,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:44:10,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:44:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:10,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 11:44:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:10,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 11:44:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:10,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 11:44:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:10,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 11:44:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:10,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:44:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:10,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:44:10,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:44:10,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362506066] [2021-12-22 11:44:10,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362506066] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:44:10,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:44:10,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:44:10,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903459353] [2021-12-22 11:44:10,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:44:10,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:44:10,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:44:10,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:44:10,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:44:10,817 INFO L87 Difference]: Start difference. First operand 6026 states and 9302 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 11:44:12,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:44:12,605 INFO L93 Difference]: Finished difference Result 23310 states and 36288 transitions. [2021-12-22 11:44:12,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 11:44:12,606 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2021-12-22 11:44:12,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:44:12,681 INFO L225 Difference]: With dead ends: 23310 [2021-12-22 11:44:12,681 INFO L226 Difference]: Without dead ends: 17297 [2021-12-22 11:44:12,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 11:44:12,704 INFO L933 BasicCegarLoop]: 548 mSDtfsCounter, 778 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 1689 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 1759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:44:12,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [789 Valid, 1558 Invalid, 1759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1689 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 11:44:12,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17297 states. [2021-12-22 11:44:13,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17297 to 11647. [2021-12-22 11:44:13,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11647 states, 10341 states have (on average 1.5216129968088192) internal successors, (15735), 10406 states have internal predecessors, (15735), 851 states have call successors, (851), 390 states have call predecessors, (851), 454 states have return successors, (1644), 914 states have call predecessors, (1644), 851 states have call successors, (1644) [2021-12-22 11:44:13,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11647 states to 11647 states and 18230 transitions. [2021-12-22 11:44:13,300 INFO L78 Accepts]: Start accepts. Automaton has 11647 states and 18230 transitions. Word has length 100 [2021-12-22 11:44:13,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:44:13,302 INFO L470 AbstractCegarLoop]: Abstraction has 11647 states and 18230 transitions. [2021-12-22 11:44:13,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 11:44:13,303 INFO L276 IsEmpty]: Start isEmpty. Operand 11647 states and 18230 transitions. [2021-12-22 11:44:13,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-22 11:44:13,311 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:44:13,312 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] [2021-12-22 11:44:13,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 11:44:13,312 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:44:13,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:44:13,313 INFO L85 PathProgramCache]: Analyzing trace with hash 748688126, now seen corresponding path program 1 times [2021-12-22 11:44:13,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:44:13,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782381127] [2021-12-22 11:44:13,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:44:13,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:44:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:13,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 11:44:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:13,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 11:44:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:13,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 11:44:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:13,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 11:44:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:13,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:44:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:44:13,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:44:13,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782381127] [2021-12-22 11:44:13,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782381127] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:44:13,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:44:13,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:44:13,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375457494] [2021-12-22 11:44:13,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:44:13,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:44:13,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:44:13,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:44:13,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:44:13,430 INFO L87 Difference]: Start difference. First operand 11647 states and 18230 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 11:44:15,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:44:15,791 INFO L93 Difference]: Finished difference Result 44489 states and 70110 transitions. [2021-12-22 11:44:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 11:44:15,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2021-12-22 11:44:15,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:44:15,895 INFO L225 Difference]: With dead ends: 44489 [2021-12-22 11:44:15,895 INFO L226 Difference]: Without dead ends: 32855 [2021-12-22 11:44:15,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 11:44:15,934 INFO L933 BasicCegarLoop]: 468 mSDtfsCounter, 870 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 11:44:15,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [888 Valid, 1481 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 11:44:15,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32855 states. [2021-12-22 11:44:16,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32855 to 23016. [2021-12-22 11:44:16,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23016 states, 20494 states have (on average 1.5243973846003709) internal successors, (31241), 20623 states have internal predecessors, (31241), 1619 states have call successors, (1619), 774 states have call predecessors, (1619), 902 states have return successors, (3934), 1746 states have call predecessors, (3934), 1619 states have call successors, (3934) [2021-12-22 11:44:17,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23016 states to 23016 states and 36794 transitions. [2021-12-22 11:44:17,010 INFO L78 Accepts]: Start accepts. Automaton has 23016 states and 36794 transitions. Word has length 100 [2021-12-22 11:44:17,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:44:17,011 INFO L470 AbstractCegarLoop]: Abstraction has 23016 states and 36794 transitions. [2021-12-22 11:44:17,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 11:44:17,011 INFO L276 IsEmpty]: Start isEmpty. Operand 23016 states and 36794 transitions. [2021-12-22 11:44:17,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-22 11:44:17,026 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:44:17,026 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] [2021-12-22 11:44:17,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 11:44:17,027 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:44:17,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:44:17,028 INFO L85 PathProgramCache]: Analyzing trace with hash 775753728, now seen corresponding path program 1 times [2021-12-22 11:44:17,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:44:17,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371786706] [2021-12-22 11:44:17,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:44:17,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:44:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:17,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 11:44:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:17,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 11:44:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:17,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 11:44:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:17,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 11:44:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:17,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:44:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:17,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:44:17,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:44:17,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371786706] [2021-12-22 11:44:17,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371786706] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:44:17,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:44:17,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:44:17,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532122275] [2021-12-22 11:44:17,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:44:17,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:44:17,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:44:17,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:44:17,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:44:17,106 INFO L87 Difference]: Start difference. First operand 23016 states and 36794 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 11:44:20,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:44:20,653 INFO L93 Difference]: Finished difference Result 86080 states and 138516 transitions. [2021-12-22 11:44:20,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 11:44:20,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2021-12-22 11:44:20,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:44:20,912 INFO L225 Difference]: With dead ends: 86080 [2021-12-22 11:44:20,913 INFO L226 Difference]: Without dead ends: 63077 [2021-12-22 11:44:20,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 11:44:20,985 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 830 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 11:44:20,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [848 Valid, 1476 Invalid, 1513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1440 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 11:44:21,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63077 states. [2021-12-22 11:44:23,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63077 to 45689. [2021-12-22 11:44:23,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45689 states, 40799 states have (on average 1.527365866810461) internal successors, (62315), 41056 states have internal predecessors, (62315), 3091 states have call successors, (3091), 1542 states have call predecessors, (3091), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2021-12-22 11:44:23,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45689 states to 45689 states and 75314 transitions. [2021-12-22 11:44:23,386 INFO L78 Accepts]: Start accepts. Automaton has 45689 states and 75314 transitions. Word has length 100 [2021-12-22 11:44:23,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:44:23,387 INFO L470 AbstractCegarLoop]: Abstraction has 45689 states and 75314 transitions. [2021-12-22 11:44:23,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 11:44:23,387 INFO L276 IsEmpty]: Start isEmpty. Operand 45689 states and 75314 transitions. [2021-12-22 11:44:23,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-22 11:44:23,414 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:44:23,415 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] [2021-12-22 11:44:23,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 11:44:23,415 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:44:23,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:44:23,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1301583170, now seen corresponding path program 1 times [2021-12-22 11:44:23,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:44:23,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992009226] [2021-12-22 11:44:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:44:23,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:44:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:23,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 11:44:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:23,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 11:44:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:23,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 11:44:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:23,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 11:44:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:23,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:44:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:44:23,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:44:23,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992009226] [2021-12-22 11:44:23,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992009226] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:44:23,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:44:23,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:44:23,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401754499] [2021-12-22 11:44:23,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:44:23,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:44:23,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:44:23,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:44:23,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:44:23,493 INFO L87 Difference]: Start difference. First operand 45689 states and 75314 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 11:44:30,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:44:30,075 INFO L93 Difference]: Finished difference Result 166895 states and 277386 transitions. [2021-12-22 11:44:30,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 11:44:30,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2021-12-22 11:44:30,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:44:30,583 INFO L225 Difference]: With dead ends: 166895 [2021-12-22 11:44:30,584 INFO L226 Difference]: Without dead ends: 121219 [2021-12-22 11:44:30,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 11:44:30,725 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 746 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 1561 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 11:44:30,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [757 Valid, 1499 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1561 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 11:44:30,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121219 states. [2021-12-22 11:44:35,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121219 to 90906. [2021-12-22 11:44:35,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90906 states, 81408 states have (on average 1.530426985062893) internal successors, (124589), 81921 states have internal predecessors, (124589), 5907 states have call successors, (5907), 3078 states have call predecessors, (5907), 3590 states have return successors, (26102), 6418 states have call predecessors, (26102), 5907 states have call successors, (26102) [2021-12-22 11:44:35,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90906 states to 90906 states and 156598 transitions. [2021-12-22 11:44:35,841 INFO L78 Accepts]: Start accepts. Automaton has 90906 states and 156598 transitions. Word has length 100 [2021-12-22 11:44:35,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:44:35,841 INFO L470 AbstractCegarLoop]: Abstraction has 90906 states and 156598 transitions. [2021-12-22 11:44:35,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 11:44:35,842 INFO L276 IsEmpty]: Start isEmpty. Operand 90906 states and 156598 transitions. [2021-12-22 11:44:35,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-22 11:44:35,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:44:35,905 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] [2021-12-22 11:44:35,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 11:44:35,906 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:44:35,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:44:35,906 INFO L85 PathProgramCache]: Analyzing trace with hash 432521280, now seen corresponding path program 1 times [2021-12-22 11:44:35,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:44:35,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389737431] [2021-12-22 11:44:35,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:44:35,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:44:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:35,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 11:44:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:35,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 11:44:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:35,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 11:44:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:35,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 11:44:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:35,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:44:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:44:35,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:44:35,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:44:35,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389737431] [2021-12-22 11:44:35,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389737431] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:44:35,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:44:35,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:44:35,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782386456] [2021-12-22 11:44:35,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:44:35,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:44:35,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:44:35,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:44:35,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:44:35,981 INFO L87 Difference]: Start difference. First operand 90906 states and 156598 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 11:44:48,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:44:48,145 INFO L93 Difference]: Finished difference Result 323646 states and 564928 transitions. [2021-12-22 11:44:48,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 11:44:48,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2021-12-22 11:44:48,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:44:49,328 INFO L225 Difference]: With dead ends: 323646 [2021-12-22 11:44:49,328 INFO L226 Difference]: Without dead ends: 232753 [2021-12-22 11:44:49,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 11:44:49,571 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 750 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-22 11:44:49,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 1445 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-22 11:44:49,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232753 states.