./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/transmitter.06.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/transmitter.06.cil.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 bbfdf3f22061e77485b28b33d06a9820d2c4b7aa22afc378a1743c2d746b69df --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 15:42:35,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 15:42:35,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 15:42:35,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 15:42:36,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 15:42:36,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 15:42:36,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 15:42:36,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 15:42:36,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 15:42:36,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 15:42:36,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 15:42:36,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 15:42:36,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 15:42:36,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 15:42:36,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 15:42:36,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 15:42:36,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 15:42:36,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 15:42:36,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 15:42:36,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 15:42:36,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 15:42:36,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 15:42:36,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 15:42:36,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 15:42:36,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 15:42:36,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 15:42:36,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 15:42:36,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 15:42:36,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 15:42:36,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 15:42:36,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 15:42:36,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 15:42:36,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 15:42:36,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 15:42:36,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 15:42:36,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 15:42:36,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 15:42:36,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 15:42:36,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 15:42:36,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 15:42:36,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 15:42:36,053 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 15:42:36,084 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 15:42:36,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 15:42:36,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 15:42:36,085 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 15:42:36,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 15:42:36,086 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 15:42:36,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 15:42:36,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 15:42:36,087 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 15:42:36,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 15:42:36,088 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 15:42:36,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 15:42:36,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 15:42:36,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 15:42:36,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 15:42:36,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 15:42:36,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 15:42:36,089 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 15:42:36,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 15:42:36,089 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 15:42:36,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 15:42:36,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 15:42:36,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 15:42:36,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 15:42:36,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 15:42:36,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 15:42:36,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 15:42:36,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 15:42:36,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 15:42:36,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 15:42:36,092 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 15:42:36,092 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 15:42:36,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 15:42:36,092 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 15:42:36,092 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbfdf3f22061e77485b28b33d06a9820d2c4b7aa22afc378a1743c2d746b69df [2021-12-17 15:42:36,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 15:42:36,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 15:42:36,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 15:42:36,331 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 15:42:36,332 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 15:42:36,333 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.06.cil.c [2021-12-17 15:42:36,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f402f509f/5f50a352d9534a4aa82517a909c4cc17/FLAG4b9134d76 [2021-12-17 15:42:36,759 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 15:42:36,759 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.06.cil.c [2021-12-17 15:42:36,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f402f509f/5f50a352d9534a4aa82517a909c4cc17/FLAG4b9134d76 [2021-12-17 15:42:36,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f402f509f/5f50a352d9534a4aa82517a909c4cc17 [2021-12-17 15:42:36,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 15:42:36,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 15:42:36,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 15:42:36,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 15:42:36,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 15:42:36,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 03:42:36" (1/1) ... [2021-12-17 15:42:36,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63bb7365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:36, skipping insertion in model container [2021-12-17 15:42:36,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 03:42:36" (1/1) ... [2021-12-17 15:42:36,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 15:42:36,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 15:42:36,911 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/transmitter.06.cil.c[706,719] [2021-12-17 15:42:36,988 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 15:42:36,995 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 15:42:37,010 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/transmitter.06.cil.c[706,719] [2021-12-17 15:42:37,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 15:42:37,069 INFO L208 MainTranslator]: Completed translation [2021-12-17 15:42:37,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:37 WrapperNode [2021-12-17 15:42:37,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 15:42:37,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 15:42:37,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 15:42:37,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 15:42:37,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:37" (1/1) ... [2021-12-17 15:42:37,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:37" (1/1) ... [2021-12-17 15:42:37,133 INFO L137 Inliner]: procedures = 40, calls = 48, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 492 [2021-12-17 15:42:37,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 15:42:37,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 15:42:37,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 15:42:37,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 15:42:37,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:37" (1/1) ... [2021-12-17 15:42:37,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:37" (1/1) ... [2021-12-17 15:42:37,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:37" (1/1) ... [2021-12-17 15:42:37,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:37" (1/1) ... [2021-12-17 15:42:37,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:37" (1/1) ... [2021-12-17 15:42:37,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:37" (1/1) ... [2021-12-17 15:42:37,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:37" (1/1) ... [2021-12-17 15:42:37,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 15:42:37,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 15:42:37,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 15:42:37,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 15:42:37,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:37" (1/1) ... [2021-12-17 15:42:37,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 15:42:37,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:42:37,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 15:42:37,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 15:42:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 15:42:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-17 15:42:37,297 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-17 15:42:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-17 15:42:37,297 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-17 15:42:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 15:42:37,297 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 15:42:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-17 15:42:37,298 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-17 15:42:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-17 15:42:37,298 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-17 15:42:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 15:42:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-17 15:42:37,298 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-17 15:42:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 15:42:37,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 15:42:37,370 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 15:42:37,371 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 15:42:37,805 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 15:42:37,812 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 15:42:37,820 INFO L301 CfgBuilder]: Removed 10 assume(true) statements. [2021-12-17 15:42:37,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:42:37 BoogieIcfgContainer [2021-12-17 15:42:37,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 15:42:37,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 15:42:37,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 15:42:37,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 15:42:37,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 03:42:36" (1/3) ... [2021-12-17 15:42:37,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a725cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 03:42:37, skipping insertion in model container [2021-12-17 15:42:37,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:42:37" (2/3) ... [2021-12-17 15:42:37,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a725cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 03:42:37, skipping insertion in model container [2021-12-17 15:42:37,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:42:37" (3/3) ... [2021-12-17 15:42:37,830 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.06.cil.c [2021-12-17 15:42:37,834 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 15:42:37,835 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 15:42:37,870 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 15:42:37,884 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 15:42:37,884 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 15:42:37,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 228 states, 201 states have (on average 1.6318407960199004) internal successors, (328), 203 states have internal predecessors, (328), 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) [2021-12-17 15:42:37,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:42:37,928 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:37,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:37,929 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:37,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:37,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1353655359, now seen corresponding path program 1 times [2021-12-17 15:42:37,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:37,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841965322] [2021-12-17 15:42:37,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:37,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:38,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:38,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:38,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:42:38,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:38,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:42:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:38,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:42:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:38,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:42:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:38,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:38,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:38,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841965322] [2021-12-17 15:42:38,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841965322] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:38,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:38,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 15:42:38,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851697901] [2021-12-17 15:42:38,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:38,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 15:42:38,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:38,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 15:42:38,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 15:42:38,283 INFO L87 Difference]: Start difference. First operand has 228 states, 201 states have (on average 1.6318407960199004) internal successors, (328), 203 states have internal predecessors, (328), 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 5 states, 5 states have (on average 21.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:42:38,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:38,858 INFO L93 Difference]: Finished difference Result 521 states and 845 transitions. [2021-12-17 15:42:38,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 15:42:38,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2021-12-17 15:42:38,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:38,875 INFO L225 Difference]: With dead ends: 521 [2021-12-17 15:42:38,876 INFO L226 Difference]: Without dead ends: 297 [2021-12-17 15:42:38,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 15:42:38,897 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 568 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:38,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [585 Valid, 626 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 15:42:38,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-12-17 15:42:38,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 223. [2021-12-17 15:42:38,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 197 states have (on average 1.5279187817258884) internal successors, (301), 198 states have internal predecessors, (301), 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) [2021-12-17 15:42:38,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 339 transitions. [2021-12-17 15:42:38,985 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 339 transitions. Word has length 115 [2021-12-17 15:42:38,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:38,986 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 339 transitions. [2021-12-17 15:42:38,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:42:38,986 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 339 transitions. [2021-12-17 15:42:38,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:42:38,997 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:38,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:38,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 15:42:38,998 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:39,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:39,001 INFO L85 PathProgramCache]: Analyzing trace with hash -730373757, now seen corresponding path program 1 times [2021-12-17 15:42:39,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:39,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367006378] [2021-12-17 15:42:39,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:39,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:39,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:39,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:42:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:39,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:42:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:39,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:42:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:39,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:42:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:39,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:39,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367006378] [2021-12-17 15:42:39,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367006378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:39,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:39,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:42:39,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334217166] [2021-12-17 15:42:39,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:39,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:42:39,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:39,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:42:39,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:42:39,168 INFO L87 Difference]: Start difference. First operand 223 states and 339 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-12-17 15:42:39,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:39,824 INFO L93 Difference]: Finished difference Result 505 states and 782 transitions. [2021-12-17 15:42:39,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 15:42:39,824 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 4 states have internal predecessors, (105), 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 115 [2021-12-17 15:42:39,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:39,826 INFO L225 Difference]: With dead ends: 505 [2021-12-17 15:42:39,827 INFO L226 Difference]: Without dead ends: 296 [2021-12-17 15:42:39,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-17 15:42:39,828 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 554 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:39,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 729 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 15:42:39,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-12-17 15:42:39,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 223. [2021-12-17 15:42:39,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 197 states have (on average 1.5228426395939085) internal successors, (300), 198 states have internal predecessors, (300), 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) [2021-12-17 15:42:39,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 338 transitions. [2021-12-17 15:42:39,846 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 338 transitions. Word has length 115 [2021-12-17 15:42:39,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:39,846 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 338 transitions. [2021-12-17 15:42:39,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-12-17 15:42:39,847 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 338 transitions. [2021-12-17 15:42:39,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:42:39,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:39,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:39,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 15:42:39,849 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:39,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:39,849 INFO L85 PathProgramCache]: Analyzing trace with hash 300667141, now seen corresponding path program 1 times [2021-12-17 15:42:39,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:39,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771283769] [2021-12-17 15:42:39,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:39,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:39,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:39,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:42:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:39,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:42:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:39,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:42:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:39,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:42:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:39,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:39,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771283769] [2021-12-17 15:42:39,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771283769] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:39,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:39,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:42:39,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956278552] [2021-12-17 15:42:39,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:39,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:42:39,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:39,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:42:39,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:42:39,988 INFO L87 Difference]: Start difference. First operand 223 states and 338 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:40,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:40,604 INFO L93 Difference]: Finished difference Result 517 states and 803 transitions. [2021-12-17 15:42:40,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 15:42:40,605 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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 115 [2021-12-17 15:42:40,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:40,607 INFO L225 Difference]: With dead ends: 517 [2021-12-17 15:42:40,608 INFO L226 Difference]: Without dead ends: 308 [2021-12-17 15:42:40,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 15:42:40,610 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 689 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:40,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 781 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 15:42:40,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-12-17 15:42:40,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 223. [2021-12-17 15:42:40,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 197 states have (on average 1.517766497461929) internal successors, (299), 198 states have internal predecessors, (299), 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) [2021-12-17 15:42:40,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 337 transitions. [2021-12-17 15:42:40,648 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 337 transitions. Word has length 115 [2021-12-17 15:42:40,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:40,649 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 337 transitions. [2021-12-17 15:42:40,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:40,649 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 337 transitions. [2021-12-17 15:42:40,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:42:40,654 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:40,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:40,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 15:42:40,655 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:40,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:40,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1605736125, now seen corresponding path program 1 times [2021-12-17 15:42:40,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:40,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271882356] [2021-12-17 15:42:40,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:40,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:40,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:40,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:42:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:40,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:42:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:40,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:42:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:40,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:42:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:40,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:40,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:40,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271882356] [2021-12-17 15:42:40,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271882356] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:40,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:40,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:42:40,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314261870] [2021-12-17 15:42:40,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:40,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:42:40,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:40,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:42:40,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:42:40,799 INFO L87 Difference]: Start difference. First operand 223 states and 337 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:41,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:41,403 INFO L93 Difference]: Finished difference Result 515 states and 797 transitions. [2021-12-17 15:42:41,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 15:42:41,404 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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 115 [2021-12-17 15:42:41,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:41,406 INFO L225 Difference]: With dead ends: 515 [2021-12-17 15:42:41,406 INFO L226 Difference]: Without dead ends: 306 [2021-12-17 15:42:41,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 15:42:41,408 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 688 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:41,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [701 Valid, 775 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 15:42:41,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-12-17 15:42:41,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 223. [2021-12-17 15:42:41,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 197 states have (on average 1.5126903553299493) internal successors, (298), 198 states have internal predecessors, (298), 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) [2021-12-17 15:42:41,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 336 transitions. [2021-12-17 15:42:41,422 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 336 transitions. Word has length 115 [2021-12-17 15:42:41,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:41,423 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 336 transitions. [2021-12-17 15:42:41,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:41,423 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 336 transitions. [2021-12-17 15:42:41,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:42:41,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:41,425 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:41,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 15:42:41,425 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:41,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:41,426 INFO L85 PathProgramCache]: Analyzing trace with hash -4665019, now seen corresponding path program 1 times [2021-12-17 15:42:41,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:41,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86534097] [2021-12-17 15:42:41,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:41,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:41,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:41,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:42:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:41,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:42:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:41,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:42:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:41,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:42:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:41,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:41,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:41,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86534097] [2021-12-17 15:42:41,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86534097] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:41,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:41,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:42:41,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618974021] [2021-12-17 15:42:41,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:41,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:42:41,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:41,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:42:41,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:42:41,533 INFO L87 Difference]: Start difference. First operand 223 states and 336 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:42,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:42,113 INFO L93 Difference]: Finished difference Result 503 states and 774 transitions. [2021-12-17 15:42:42,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 15:42:42,113 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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 115 [2021-12-17 15:42:42,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:42,115 INFO L225 Difference]: With dead ends: 503 [2021-12-17 15:42:42,115 INFO L226 Difference]: Without dead ends: 294 [2021-12-17 15:42:42,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-17 15:42:42,117 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 593 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:42,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 865 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 15:42:42,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-12-17 15:42:42,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 223. [2021-12-17 15:42:42,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 197 states have (on average 1.49746192893401) internal successors, (295), 198 states have internal predecessors, (295), 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) [2021-12-17 15:42:42,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 333 transitions. [2021-12-17 15:42:42,130 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 333 transitions. Word has length 115 [2021-12-17 15:42:42,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:42,130 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 333 transitions. [2021-12-17 15:42:42,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:42,130 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 333 transitions. [2021-12-17 15:42:42,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:42:42,131 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:42,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:42,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 15:42:42,132 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:42,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:42,132 INFO L85 PathProgramCache]: Analyzing trace with hash -897263099, now seen corresponding path program 1 times [2021-12-17 15:42:42,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:42,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149673998] [2021-12-17 15:42:42,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:42,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:42,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:42,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:42:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:42,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:42:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:42,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:42:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:42,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:42:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:42,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:42,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:42,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149673998] [2021-12-17 15:42:42,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149673998] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:42,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:42,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:42:42,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646787684] [2021-12-17 15:42:42,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:42,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:42:42,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:42,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:42:42,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:42:42,223 INFO L87 Difference]: Start difference. First operand 223 states and 333 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:42,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:42,766 INFO L93 Difference]: Finished difference Result 512 states and 781 transitions. [2021-12-17 15:42:42,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 15:42:42,767 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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 115 [2021-12-17 15:42:42,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:42,768 INFO L225 Difference]: With dead ends: 512 [2021-12-17 15:42:42,768 INFO L226 Difference]: Without dead ends: 303 [2021-12-17 15:42:42,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 15:42:42,770 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 680 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:42,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 760 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 15:42:42,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-12-17 15:42:42,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 223. [2021-12-17 15:42:42,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 197 states have (on average 1.4923857868020305) internal successors, (294), 198 states have internal predecessors, (294), 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) [2021-12-17 15:42:42,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 332 transitions. [2021-12-17 15:42:42,797 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 332 transitions. Word has length 115 [2021-12-17 15:42:42,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:42,797 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 332 transitions. [2021-12-17 15:42:42,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:42,798 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 332 transitions. [2021-12-17 15:42:42,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:42:42,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:42,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:42,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 15:42:42,799 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:42,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:42,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1778729283, now seen corresponding path program 1 times [2021-12-17 15:42:42,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:42,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800591048] [2021-12-17 15:42:42,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:42,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:42,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:42,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:42:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:42,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:42:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:42,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:42:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:42,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:42:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:42,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:42,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:42,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800591048] [2021-12-17 15:42:42,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800591048] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:42,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:42,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:42:42,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548416914] [2021-12-17 15:42:42,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:42,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:42:42,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:42,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:42:42,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:42:42,873 INFO L87 Difference]: Start difference. First operand 223 states and 332 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:43,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:43,423 INFO L93 Difference]: Finished difference Result 511 states and 776 transitions. [2021-12-17 15:42:43,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 15:42:43,423 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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 115 [2021-12-17 15:42:43,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:43,425 INFO L225 Difference]: With dead ends: 511 [2021-12-17 15:42:43,425 INFO L226 Difference]: Without dead ends: 302 [2021-12-17 15:42:43,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 15:42:43,426 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 678 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:43,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [691 Valid, 756 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 15:42:43,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-12-17 15:42:43,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 223. [2021-12-17 15:42:43,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 197 states have (on average 1.4873096446700507) internal successors, (293), 198 states have internal predecessors, (293), 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) [2021-12-17 15:42:43,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 331 transitions. [2021-12-17 15:42:43,437 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 331 transitions. Word has length 115 [2021-12-17 15:42:43,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:43,437 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 331 transitions. [2021-12-17 15:42:43,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:43,438 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 331 transitions. [2021-12-17 15:42:43,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:42:43,439 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:43,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:43,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 15:42:43,439 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:43,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:43,440 INFO L85 PathProgramCache]: Analyzing trace with hash 895220293, now seen corresponding path program 1 times [2021-12-17 15:42:43,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:43,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092504248] [2021-12-17 15:42:43,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:43,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:43,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:43,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:42:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:43,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:42:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:43,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:42:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:43,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:42:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:43,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:43,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:43,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092504248] [2021-12-17 15:42:43,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092504248] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:43,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:43,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:42:43,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414513356] [2021-12-17 15:42:43,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:43,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:42:43,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:43,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:42:43,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:42:43,513 INFO L87 Difference]: Start difference. First operand 223 states and 331 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:44,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:44,155 INFO L93 Difference]: Finished difference Result 510 states and 771 transitions. [2021-12-17 15:42:44,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 15:42:44,156 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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 115 [2021-12-17 15:42:44,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:44,158 INFO L225 Difference]: With dead ends: 510 [2021-12-17 15:42:44,158 INFO L226 Difference]: Without dead ends: 301 [2021-12-17 15:42:44,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 15:42:44,159 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 581 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:44,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 867 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 15:42:44,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-12-17 15:42:44,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 223. [2021-12-17 15:42:44,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 197 states have (on average 1.482233502538071) internal successors, (292), 198 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) [2021-12-17 15:42:44,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 330 transitions. [2021-12-17 15:42:44,172 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 330 transitions. Word has length 115 [2021-12-17 15:42:44,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:44,172 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 330 transitions. [2021-12-17 15:42:44,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:44,173 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 330 transitions. [2021-12-17 15:42:44,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:42:44,173 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:44,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:44,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 15:42:44,174 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:44,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:44,174 INFO L85 PathProgramCache]: Analyzing trace with hash 866720003, now seen corresponding path program 1 times [2021-12-17 15:42:44,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:44,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665151519] [2021-12-17 15:42:44,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:44,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:44,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:44,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:42:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:44,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:42:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:44,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:42:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:44,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:42:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:44,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:44,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:44,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665151519] [2021-12-17 15:42:44,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665151519] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:44,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:44,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:42:44,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216395288] [2021-12-17 15:42:44,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:44,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:42:44,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:44,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:42:44,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:42:44,250 INFO L87 Difference]: Start difference. First operand 223 states and 330 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:44,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:44,833 INFO L93 Difference]: Finished difference Result 509 states and 766 transitions. [2021-12-17 15:42:44,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 15:42:44,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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 115 [2021-12-17 15:42:44,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:44,835 INFO L225 Difference]: With dead ends: 509 [2021-12-17 15:42:44,836 INFO L226 Difference]: Without dead ends: 300 [2021-12-17 15:42:44,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 15:42:44,837 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 672 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:44,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 746 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 15:42:44,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-12-17 15:42:44,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 223. [2021-12-17 15:42:44,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 197 states have (on average 1.4771573604060915) internal successors, (291), 198 states have internal predecessors, (291), 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) [2021-12-17 15:42:44,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 329 transitions. [2021-12-17 15:42:44,849 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 329 transitions. Word has length 115 [2021-12-17 15:42:44,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:44,850 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 329 transitions. [2021-12-17 15:42:44,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:44,850 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 329 transitions. [2021-12-17 15:42:44,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:42:44,851 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:44,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:44,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 15:42:44,851 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:44,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:44,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1073862011, now seen corresponding path program 1 times [2021-12-17 15:42:44,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:44,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418145634] [2021-12-17 15:42:44,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:44,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:44,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:44,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:42:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:44,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:42:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:44,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:42:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:44,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:42:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:44,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:44,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:44,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418145634] [2021-12-17 15:42:44,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418145634] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:44,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:44,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:42:44,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643518393] [2021-12-17 15:42:44,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:44,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:42:44,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:44,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:42:44,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:42:44,925 INFO L87 Difference]: Start difference. First operand 223 states and 329 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:45,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:45,443 INFO L93 Difference]: Finished difference Result 508 states and 761 transitions. [2021-12-17 15:42:45,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 15:42:45,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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 115 [2021-12-17 15:42:45,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:45,445 INFO L225 Difference]: With dead ends: 508 [2021-12-17 15:42:45,445 INFO L226 Difference]: Without dead ends: 299 [2021-12-17 15:42:45,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 15:42:45,446 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 670 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:45,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [683 Valid, 742 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 15:42:45,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-12-17 15:42:45,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 223. [2021-12-17 15:42:45,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 197 states have (on average 1.4720812182741116) internal successors, (290), 198 states have internal predecessors, (290), 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) [2021-12-17 15:42:45,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 328 transitions. [2021-12-17 15:42:45,476 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 328 transitions. Word has length 115 [2021-12-17 15:42:45,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:45,477 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 328 transitions. [2021-12-17 15:42:45,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:45,477 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 328 transitions. [2021-12-17 15:42:45,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:42:45,478 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:45,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:45,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 15:42:45,479 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:45,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:45,480 INFO L85 PathProgramCache]: Analyzing trace with hash 803201219, now seen corresponding path program 1 times [2021-12-17 15:42:45,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:45,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979901277] [2021-12-17 15:42:45,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:45,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:45,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:45,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:42:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:45,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:42:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:45,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:42:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:45,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:42:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:45,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:45,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:45,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979901277] [2021-12-17 15:42:45,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979901277] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:45,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:45,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 15:42:45,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732123426] [2021-12-17 15:42:45,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:45,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 15:42:45,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:45,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 15:42:45,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 15:42:45,568 INFO L87 Difference]: Start difference. First operand 223 states and 328 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 6 states have internal predecessors, (105), 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) [2021-12-17 15:42:46,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:46,797 INFO L93 Difference]: Finished difference Result 829 states and 1241 transitions. [2021-12-17 15:42:46,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 15:42:46,797 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 6 states have internal predecessors, (105), 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 115 [2021-12-17 15:42:46,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:46,800 INFO L225 Difference]: With dead ends: 829 [2021-12-17 15:42:46,800 INFO L226 Difference]: Without dead ends: 620 [2021-12-17 15:42:46,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-17 15:42:46,802 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 1059 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:46,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1071 Valid, 1813 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1539 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 15:42:46,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-12-17 15:42:46,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 428. [2021-12-17 15:42:46,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 381 states have (on average 1.4750656167979002) internal successors, (562), 383 states have internal predecessors, (562), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (36), 34 states have call predecessors, (36), 33 states have call successors, (36) [2021-12-17 15:42:46,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 631 transitions. [2021-12-17 15:42:46,833 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 631 transitions. Word has length 115 [2021-12-17 15:42:46,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:46,833 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 631 transitions. [2021-12-17 15:42:46,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 6 states have internal predecessors, (105), 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) [2021-12-17 15:42:46,834 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 631 transitions. [2021-12-17 15:42:46,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:42:46,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:46,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:46,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 15:42:46,835 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:46,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:46,836 INFO L85 PathProgramCache]: Analyzing trace with hash 32467653, now seen corresponding path program 1 times [2021-12-17 15:42:46,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:46,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763124253] [2021-12-17 15:42:46,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:46,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:46,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:46,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:42:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:46,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:42:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:46,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:42:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:46,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:42:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:46,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:46,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:46,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763124253] [2021-12-17 15:42:46,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763124253] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:46,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:46,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:42:46,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085934381] [2021-12-17 15:42:46,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:46,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:42:46,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:46,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:42:46,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:42:46,918 INFO L87 Difference]: Start difference. First operand 428 states and 631 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:47,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:47,464 INFO L93 Difference]: Finished difference Result 990 states and 1473 transitions. [2021-12-17 15:42:47,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 15:42:47,464 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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 115 [2021-12-17 15:42:47,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:47,469 INFO L225 Difference]: With dead ends: 990 [2021-12-17 15:42:47,469 INFO L226 Difference]: Without dead ends: 576 [2021-12-17 15:42:47,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 15:42:47,472 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 670 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:47,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [683 Valid, 731 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 15:42:47,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-12-17 15:42:47,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 428. [2021-12-17 15:42:47,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 381 states have (on average 1.4698162729658792) internal successors, (560), 383 states have internal predecessors, (560), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (36), 34 states have call predecessors, (36), 33 states have call successors, (36) [2021-12-17 15:42:47,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 629 transitions. [2021-12-17 15:42:47,505 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 629 transitions. Word has length 115 [2021-12-17 15:42:47,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:47,505 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 629 transitions. [2021-12-17 15:42:47,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:47,506 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 629 transitions. [2021-12-17 15:42:47,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:42:47,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:47,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:47,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 15:42:47,508 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:47,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:47,508 INFO L85 PathProgramCache]: Analyzing trace with hash -553808569, now seen corresponding path program 1 times [2021-12-17 15:42:47,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:47,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735378778] [2021-12-17 15:42:47,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:47,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:47,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:47,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:42:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:47,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:42:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:47,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:42:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:47,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:42:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:47,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:47,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:47,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735378778] [2021-12-17 15:42:47,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735378778] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:47,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:47,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:42:47,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118257718] [2021-12-17 15:42:47,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:47,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:42:47,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:47,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:42:47,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:42:47,586 INFO L87 Difference]: Start difference. First operand 428 states and 629 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-12-17 15:42:48,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:48,553 INFO L93 Difference]: Finished difference Result 1531 states and 2279 transitions. [2021-12-17 15:42:48,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 15:42:48,553 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 4 states have internal predecessors, (105), 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 115 [2021-12-17 15:42:48,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:48,557 INFO L225 Difference]: With dead ends: 1531 [2021-12-17 15:42:48,557 INFO L226 Difference]: Without dead ends: 1118 [2021-12-17 15:42:48,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-17 15:42:48,559 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 1036 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:48,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1066 Valid, 1376 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 15:42:48,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2021-12-17 15:42:48,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 825. [2021-12-17 15:42:48,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 736 states have (on average 1.4646739130434783) internal successors, (1078), 741 states have internal predecessors, (1078), 62 states have call successors, (62), 24 states have call predecessors, (62), 26 states have return successors, (67), 61 states have call predecessors, (67), 62 states have call successors, (67) [2021-12-17 15:42:48,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1207 transitions. [2021-12-17 15:42:48,606 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1207 transitions. Word has length 115 [2021-12-17 15:42:48,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:48,607 INFO L470 AbstractCegarLoop]: Abstraction has 825 states and 1207 transitions. [2021-12-17 15:42:48,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-12-17 15:42:48,607 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1207 transitions. [2021-12-17 15:42:48,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:42:48,608 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:48,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:48,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 15:42:48,609 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:48,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:48,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1756330022, now seen corresponding path program 1 times [2021-12-17 15:42:48,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:48,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209607861] [2021-12-17 15:42:48,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:48,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:48,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:48,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:42:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:48,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:42:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:48,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:42:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:48,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:42:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:48,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:48,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:48,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209607861] [2021-12-17 15:42:48,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209607861] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:48,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:48,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:42:48,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838821224] [2021-12-17 15:42:48,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:48,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:42:48,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:48,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:42:48,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:42:48,702 INFO L87 Difference]: Start difference. First operand 825 states and 1207 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:49,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:49,660 INFO L93 Difference]: Finished difference Result 2147 states and 3192 transitions. [2021-12-17 15:42:49,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 15:42:49,660 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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 115 [2021-12-17 15:42:49,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:49,665 INFO L225 Difference]: With dead ends: 2147 [2021-12-17 15:42:49,666 INFO L226 Difference]: Without dead ends: 1337 [2021-12-17 15:42:49,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-12-17 15:42:49,669 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 624 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:49,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 1190 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 15:42:49,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2021-12-17 15:42:49,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 831. [2021-12-17 15:42:49,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 742 states have (on average 1.45822102425876) internal successors, (1082), 747 states have internal predecessors, (1082), 62 states have call successors, (62), 24 states have call predecessors, (62), 26 states have return successors, (67), 61 states have call predecessors, (67), 62 states have call successors, (67) [2021-12-17 15:42:49,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1211 transitions. [2021-12-17 15:42:49,731 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1211 transitions. Word has length 115 [2021-12-17 15:42:49,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:49,732 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 1211 transitions. [2021-12-17 15:42:49,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:49,732 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1211 transitions. [2021-12-17 15:42:49,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:42:49,733 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:49,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:49,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 15:42:49,734 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:49,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:49,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1699603612, now seen corresponding path program 1 times [2021-12-17 15:42:49,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:49,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082482309] [2021-12-17 15:42:49,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:49,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:49,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:49,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:42:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:49,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:42:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:49,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:42:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:49,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:42:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:49,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:49,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:49,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082482309] [2021-12-17 15:42:49,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082482309] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:49,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:49,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:42:49,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413942569] [2021-12-17 15:42:49,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:49,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:42:49,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:49,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:42:49,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:42:49,813 INFO L87 Difference]: Start difference. First operand 831 states and 1211 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:50,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:50,798 INFO L93 Difference]: Finished difference Result 2351 states and 3483 transitions. [2021-12-17 15:42:50,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 15:42:50,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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 115 [2021-12-17 15:42:50,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:50,804 INFO L225 Difference]: With dead ends: 2351 [2021-12-17 15:42:50,804 INFO L226 Difference]: Without dead ends: 1535 [2021-12-17 15:42:50,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-12-17 15:42:50,808 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 624 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:50,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 1182 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 15:42:50,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2021-12-17 15:42:50,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 843. [2021-12-17 15:42:50,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 754 states have (on average 1.4509283819628647) internal successors, (1094), 759 states have internal predecessors, (1094), 62 states have call successors, (62), 24 states have call predecessors, (62), 26 states have return successors, (67), 61 states have call predecessors, (67), 62 states have call successors, (67) [2021-12-17 15:42:50,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1223 transitions. [2021-12-17 15:42:50,856 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1223 transitions. Word has length 115 [2021-12-17 15:42:50,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:50,857 INFO L470 AbstractCegarLoop]: Abstraction has 843 states and 1223 transitions. [2021-12-17 15:42:50,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:50,857 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1223 transitions. [2021-12-17 15:42:50,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:42:50,858 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:50,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:50,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 15:42:50,858 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:50,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:50,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1622702814, now seen corresponding path program 1 times [2021-12-17 15:42:50,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:50,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609838971] [2021-12-17 15:42:50,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:50,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:50,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:50,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:42:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:50,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:42:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:50,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:42:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:50,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:42:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:50,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:50,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:50,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609838971] [2021-12-17 15:42:50,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609838971] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:50,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:50,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:42:50,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433751577] [2021-12-17 15:42:50,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:50,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:42:50,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:50,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:42:50,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:42:50,966 INFO L87 Difference]: Start difference. First operand 843 states and 1223 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:52,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:52,840 INFO L93 Difference]: Finished difference Result 3541 states and 5307 transitions. [2021-12-17 15:42:52,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 15:42:52,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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 115 [2021-12-17 15:42:52,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:52,851 INFO L225 Difference]: With dead ends: 3541 [2021-12-17 15:42:52,851 INFO L226 Difference]: Without dead ends: 2713 [2021-12-17 15:42:52,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2021-12-17 15:42:52,854 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 1858 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1885 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 1815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:52,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1885 Valid, 1600 Invalid, 1815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 15:42:52,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2021-12-17 15:42:52,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2018. [2021-12-17 15:42:52,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 1809 states have (on average 1.4516307352128248) internal successors, (2626), 1821 states have internal predecessors, (2626), 143 states have call successors, (143), 60 states have call predecessors, (143), 65 states have return successors, (199), 138 states have call predecessors, (199), 143 states have call successors, (199) [2021-12-17 15:42:53,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 2968 transitions. [2021-12-17 15:42:53,005 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 2968 transitions. Word has length 115 [2021-12-17 15:42:53,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:53,005 INFO L470 AbstractCegarLoop]: Abstraction has 2018 states and 2968 transitions. [2021-12-17 15:42:53,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:53,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 2968 transitions. [2021-12-17 15:42:53,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:42:53,007 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:53,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:53,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 15:42:53,007 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:53,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:53,008 INFO L85 PathProgramCache]: Analyzing trace with hash -715946367, now seen corresponding path program 1 times [2021-12-17 15:42:53,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:53,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951230123] [2021-12-17 15:42:53,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:53,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:53,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:53,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:42:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:53,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:42:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:53,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:42:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:53,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:42:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:53,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:53,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:53,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951230123] [2021-12-17 15:42:53,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951230123] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:53,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:53,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:42:53,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871284543] [2021-12-17 15:42:53,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:53,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:42:53,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:53,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:42:53,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:42:53,088 INFO L87 Difference]: Start difference. First operand 2018 states and 2968 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:54,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:54,291 INFO L93 Difference]: Finished difference Result 5253 states and 7951 transitions. [2021-12-17 15:42:54,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 15:42:54,291 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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 115 [2021-12-17 15:42:54,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:54,305 INFO L225 Difference]: With dead ends: 5253 [2021-12-17 15:42:54,305 INFO L226 Difference]: Without dead ends: 3250 [2021-12-17 15:42:54,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-12-17 15:42:54,313 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 585 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:54,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [585 Valid, 1174 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 15:42:54,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2021-12-17 15:42:54,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2036. [2021-12-17 15:42:54,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2036 states, 1827 states have (on average 1.444991789819376) internal successors, (2640), 1839 states have internal predecessors, (2640), 143 states have call successors, (143), 60 states have call predecessors, (143), 65 states have return successors, (199), 138 states have call predecessors, (199), 143 states have call successors, (199) [2021-12-17 15:42:54,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2036 states to 2036 states and 2982 transitions. [2021-12-17 15:42:54,468 INFO L78 Accepts]: Start accepts. Automaton has 2036 states and 2982 transitions. Word has length 115 [2021-12-17 15:42:54,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:54,469 INFO L470 AbstractCegarLoop]: Abstraction has 2036 states and 2982 transitions. [2021-12-17 15:42:54,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:54,469 INFO L276 IsEmpty]: Start isEmpty. Operand 2036 states and 2982 transitions. [2021-12-17 15:42:54,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:42:54,470 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:54,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:54,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 15:42:54,470 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:54,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:54,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1447913793, now seen corresponding path program 1 times [2021-12-17 15:42:54,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:54,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060991319] [2021-12-17 15:42:54,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:54,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:54,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:54,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:42:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:54,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:42:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:54,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:42:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:54,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:42:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:54,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:54,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:54,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060991319] [2021-12-17 15:42:54,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060991319] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:54,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:54,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:42:54,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477411280] [2021-12-17 15:42:54,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:54,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:42:54,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:54,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:42:54,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:42:54,541 INFO L87 Difference]: Start difference. First operand 2036 states and 2982 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-12-17 15:42:55,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:55,646 INFO L93 Difference]: Finished difference Result 7380 states and 11032 transitions. [2021-12-17 15:42:55,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 15:42:55,647 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 4 states have internal predecessors, (105), 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 115 [2021-12-17 15:42:55,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:55,664 INFO L225 Difference]: With dead ends: 7380 [2021-12-17 15:42:55,664 INFO L226 Difference]: Without dead ends: 5359 [2021-12-17 15:42:55,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-17 15:42:55,670 INFO L933 BasicCegarLoop]: 596 mSDtfsCounter, 1162 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:55,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1191 Valid, 1318 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 15:42:55,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5359 states. [2021-12-17 15:42:55,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5359 to 3998. [2021-12-17 15:42:55,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3998 states, 3590 states have (on average 1.4401114206128134) internal successors, (5170), 3613 states have internal predecessors, (5170), 277 states have call successors, (277), 120 states have call predecessors, (277), 130 states have return successors, (385), 266 states have call predecessors, (385), 277 states have call successors, (385) [2021-12-17 15:42:55,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 5832 transitions. [2021-12-17 15:42:55,973 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 5832 transitions. Word has length 115 [2021-12-17 15:42:55,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:55,973 INFO L470 AbstractCegarLoop]: Abstraction has 3998 states and 5832 transitions. [2021-12-17 15:42:55,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-12-17 15:42:55,974 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 5832 transitions. [2021-12-17 15:42:55,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:42:55,975 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:55,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:55,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 15:42:55,975 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:55,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:55,976 INFO L85 PathProgramCache]: Analyzing trace with hash -742995106, now seen corresponding path program 1 times [2021-12-17 15:42:55,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:55,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440538727] [2021-12-17 15:42:55,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:55,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:55,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:56,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:42:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:56,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:42:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:56,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:42:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:56,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:42:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:56,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:56,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:56,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440538727] [2021-12-17 15:42:56,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440538727] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:56,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:56,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:42:56,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719800210] [2021-12-17 15:42:56,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:56,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:42:56,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:56,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:42:56,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:42:56,050 INFO L87 Difference]: Start difference. First operand 3998 states and 5832 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:57,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:57,300 INFO L93 Difference]: Finished difference Result 10069 states and 15098 transitions. [2021-12-17 15:42:57,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 15:42:57,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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 115 [2021-12-17 15:42:57,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:42:57,323 INFO L225 Difference]: With dead ends: 10069 [2021-12-17 15:42:57,323 INFO L226 Difference]: Without dead ends: 6086 [2021-12-17 15:42:57,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-12-17 15:42:57,336 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 586 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 15:42:57,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 1158 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 15:42:57,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6086 states. [2021-12-17 15:42:57,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6086 to 4028. [2021-12-17 15:42:57,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4028 states, 3620 states have (on average 1.4337016574585635) internal successors, (5190), 3643 states have internal predecessors, (5190), 277 states have call successors, (277), 120 states have call predecessors, (277), 130 states have return successors, (385), 266 states have call predecessors, (385), 277 states have call successors, (385) [2021-12-17 15:42:57,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4028 states to 4028 states and 5852 transitions. [2021-12-17 15:42:57,631 INFO L78 Accepts]: Start accepts. Automaton has 4028 states and 5852 transitions. Word has length 115 [2021-12-17 15:42:57,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:42:57,631 INFO L470 AbstractCegarLoop]: Abstraction has 4028 states and 5852 transitions. [2021-12-17 15:42:57,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:57,632 INFO L276 IsEmpty]: Start isEmpty. Operand 4028 states and 5852 transitions. [2021-12-17 15:42:57,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:42:57,632 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:42:57,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:42:57,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 15:42:57,633 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:42:57,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:42:57,633 INFO L85 PathProgramCache]: Analyzing trace with hash -541171172, now seen corresponding path program 1 times [2021-12-17 15:42:57,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:42:57,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288158058] [2021-12-17 15:42:57,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:42:57,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:42:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:57,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:42:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:57,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:42:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:57,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:42:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:57,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:42:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:57,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:42:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:42:57,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:42:57,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:42:57,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288158058] [2021-12-17 15:42:57,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288158058] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:42:57,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:42:57,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:42:57,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86655205] [2021-12-17 15:42:57,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:42:57,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:42:57,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:42:57,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:42:57,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:42:57,715 INFO L87 Difference]: Start difference. First operand 4028 states and 5852 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:42:59,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:42:59,976 INFO L93 Difference]: Finished difference Result 13590 states and 20108 transitions. [2021-12-17 15:42:59,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 15:42:59,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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 115 [2021-12-17 15:42:59,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:43:00,003 INFO L225 Difference]: With dead ends: 13590 [2021-12-17 15:43:00,003 INFO L226 Difference]: Without dead ends: 9577 [2021-12-17 15:43:00,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2021-12-17 15:43:00,014 INFO L933 BasicCegarLoop]: 612 mSDtfsCounter, 1951 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1978 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 15:43:00,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1978 Valid, 1552 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 15:43:00,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9577 states. [2021-12-17 15:43:00,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9577 to 7072. [2021-12-17 15:43:00,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7072 states, 6356 states have (on average 1.433291378225299) internal successors, (9110), 6403 states have internal predecessors, (9110), 481 states have call successors, (481), 216 states have call predecessors, (481), 234 states have return successors, (767), 454 states have call predecessors, (767), 481 states have call successors, (767) [2021-12-17 15:43:00,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7072 states to 7072 states and 10358 transitions. [2021-12-17 15:43:00,560 INFO L78 Accepts]: Start accepts. Automaton has 7072 states and 10358 transitions. Word has length 115 [2021-12-17 15:43:00,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:43:00,560 INFO L470 AbstractCegarLoop]: Abstraction has 7072 states and 10358 transitions. [2021-12-17 15:43:00,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:43:00,561 INFO L276 IsEmpty]: Start isEmpty. Operand 7072 states and 10358 transitions. [2021-12-17 15:43:00,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:43:00,562 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:43:00,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:43:00,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 15:43:00,562 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:43:00,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:43:00,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1242739397, now seen corresponding path program 1 times [2021-12-17 15:43:00,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:43:00,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973174175] [2021-12-17 15:43:00,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:43:00,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:43:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:00,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:43:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:00,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:43:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:00,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:43:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:00,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:43:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:00,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:43:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:00,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:43:00,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:43:00,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973174175] [2021-12-17 15:43:00,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973174175] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:43:00,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:43:00,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:43:00,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539159078] [2021-12-17 15:43:00,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:43:00,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:43:00,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:43:00,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:43:00,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:43:00,638 INFO L87 Difference]: Start difference. First operand 7072 states and 10358 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:43:02,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:43:02,219 INFO L93 Difference]: Finished difference Result 17197 states and 26152 transitions. [2021-12-17 15:43:02,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 15:43:02,220 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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 115 [2021-12-17 15:43:02,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:43:02,249 INFO L225 Difference]: With dead ends: 17197 [2021-12-17 15:43:02,249 INFO L226 Difference]: Without dead ends: 10140 [2021-12-17 15:43:02,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-12-17 15:43:02,268 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 438 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 15:43:02,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 1150 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 15:43:02,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10140 states. [2021-12-17 15:43:02,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10140 to 7132. [2021-12-17 15:43:02,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7132 states, 6416 states have (on average 1.4267456359102244) internal successors, (9154), 6463 states have internal predecessors, (9154), 481 states have call successors, (481), 216 states have call predecessors, (481), 234 states have return successors, (767), 454 states have call predecessors, (767), 481 states have call successors, (767) [2021-12-17 15:43:02,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7132 states to 7132 states and 10402 transitions. [2021-12-17 15:43:02,794 INFO L78 Accepts]: Start accepts. Automaton has 7132 states and 10402 transitions. Word has length 115 [2021-12-17 15:43:02,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:43:02,795 INFO L470 AbstractCegarLoop]: Abstraction has 7132 states and 10402 transitions. [2021-12-17 15:43:02,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:43:02,795 INFO L276 IsEmpty]: Start isEmpty. Operand 7132 states and 10402 transitions. [2021-12-17 15:43:02,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:43:02,796 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:43:02,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:43:02,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 15:43:02,796 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:43:02,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:43:02,797 INFO L85 PathProgramCache]: Analyzing trace with hash 696422649, now seen corresponding path program 1 times [2021-12-17 15:43:02,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:43:02,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092166985] [2021-12-17 15:43:02,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:43:02,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:43:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:02,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:43:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:02,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:43:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:02,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:43:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:02,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:43:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:02,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:43:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:02,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:43:02,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:43:02,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092166985] [2021-12-17 15:43:02,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092166985] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:43:02,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:43:02,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:43:02,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322320483] [2021-12-17 15:43:02,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:43:02,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:43:02,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:43:02,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:43:02,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:43:02,864 INFO L87 Difference]: Start difference. First operand 7132 states and 10402 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:43:04,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:43:04,324 INFO L93 Difference]: Finished difference Result 17149 states and 26115 transitions. [2021-12-17 15:43:04,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 15:43:04,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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 115 [2021-12-17 15:43:04,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:43:04,357 INFO L225 Difference]: With dead ends: 17149 [2021-12-17 15:43:04,357 INFO L226 Difference]: Without dead ends: 10032 [2021-12-17 15:43:04,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-12-17 15:43:04,374 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 344 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 15:43:04,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 1118 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 15:43:04,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10032 states. [2021-12-17 15:43:05,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10032 to 7240. [2021-12-17 15:43:05,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7240 states, 6524 states have (on average 1.419681177191907) internal successors, (9262), 6571 states have internal predecessors, (9262), 481 states have call successors, (481), 216 states have call predecessors, (481), 234 states have return successors, (767), 454 states have call predecessors, (767), 481 states have call successors, (767) [2021-12-17 15:43:05,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7240 states to 7240 states and 10510 transitions. [2021-12-17 15:43:05,136 INFO L78 Accepts]: Start accepts. Automaton has 7240 states and 10510 transitions. Word has length 115 [2021-12-17 15:43:05,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:43:05,136 INFO L470 AbstractCegarLoop]: Abstraction has 7240 states and 10510 transitions. [2021-12-17 15:43:05,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-12-17 15:43:05,136 INFO L276 IsEmpty]: Start isEmpty. Operand 7240 states and 10510 transitions. [2021-12-17 15:43:05,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:43:05,137 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:43:05,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:43:05,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 15:43:05,138 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:43:05,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:43:05,138 INFO L85 PathProgramCache]: Analyzing trace with hash 944569143, now seen corresponding path program 1 times [2021-12-17 15:43:05,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:43:05,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18139705] [2021-12-17 15:43:05,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:43:05,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:43:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:05,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:43:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:05,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:43:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:05,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:43:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:05,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:43:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:05,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:43:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:05,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:43:05,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:43:05,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18139705] [2021-12-17 15:43:05,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18139705] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:43:05,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:43:05,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:43:05,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560365671] [2021-12-17 15:43:05,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:43:05,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:43:05,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:43:05,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:43:05,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:43:05,208 INFO L87 Difference]: Start difference. First operand 7240 states and 10510 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:43:07,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:43:07,395 INFO L93 Difference]: Finished difference Result 20704 states and 29473 transitions. [2021-12-17 15:43:07,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 15:43:07,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2021-12-17 15:43:07,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:43:07,427 INFO L225 Difference]: With dead ends: 20704 [2021-12-17 15:43:07,427 INFO L226 Difference]: Without dead ends: 13480 [2021-12-17 15:43:07,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-12-17 15:43:07,441 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 1206 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 15:43:07,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1221 Valid, 803 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 15:43:07,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13480 states. [2021-12-17 15:43:08,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13480 to 9376. [2021-12-17 15:43:08,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9376 states, 8624 states have (on average 1.3733766233766234) internal successors, (11844), 8667 states have internal predecessors, (11844), 481 states have call successors, (481), 252 states have call predecessors, (481), 270 states have return successors, (771), 458 states have call predecessors, (771), 481 states have call successors, (771) [2021-12-17 15:43:08,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9376 states to 9376 states and 13096 transitions. [2021-12-17 15:43:08,381 INFO L78 Accepts]: Start accepts. Automaton has 9376 states and 13096 transitions. Word has length 115 [2021-12-17 15:43:08,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:43:08,381 INFO L470 AbstractCegarLoop]: Abstraction has 9376 states and 13096 transitions. [2021-12-17 15:43:08,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:43:08,382 INFO L276 IsEmpty]: Start isEmpty. Operand 9376 states and 13096 transitions. [2021-12-17 15:43:08,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:43:08,383 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:43:08,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:43:08,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 15:43:08,383 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:43:08,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:43:08,383 INFO L85 PathProgramCache]: Analyzing trace with hash -84790155, now seen corresponding path program 1 times [2021-12-17 15:43:08,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:43:08,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083796016] [2021-12-17 15:43:08,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:43:08,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:43:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:08,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:43:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:08,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:43:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:08,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:43:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:08,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:43:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:08,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:43:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:08,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:43:08,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:43:08,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083796016] [2021-12-17 15:43:08,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083796016] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:43:08,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:43:08,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:43:08,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182624251] [2021-12-17 15:43:08,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:43:08,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:43:08,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:43:08,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:43:08,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:43:08,462 INFO L87 Difference]: Start difference. First operand 9376 states and 13096 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:43:10,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:43:10,666 INFO L93 Difference]: Finished difference Result 22804 states and 31918 transitions. [2021-12-17 15:43:10,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 15:43:10,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2021-12-17 15:43:10,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:43:10,700 INFO L225 Difference]: With dead ends: 22804 [2021-12-17 15:43:10,700 INFO L226 Difference]: Without dead ends: 13444 [2021-12-17 15:43:10,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-17 15:43:10,714 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 696 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 15:43:10,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [713 Valid, 793 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 15:43:10,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13444 states. [2021-12-17 15:43:11,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13444 to 9376. [2021-12-17 15:43:11,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9376 states, 8624 states have (on average 1.3650278293135436) internal successors, (11772), 8667 states have internal predecessors, (11772), 481 states have call successors, (481), 252 states have call predecessors, (481), 270 states have return successors, (771), 458 states have call predecessors, (771), 481 states have call successors, (771) [2021-12-17 15:43:11,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9376 states to 9376 states and 13024 transitions. [2021-12-17 15:43:11,621 INFO L78 Accepts]: Start accepts. Automaton has 9376 states and 13024 transitions. Word has length 115 [2021-12-17 15:43:11,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:43:11,622 INFO L470 AbstractCegarLoop]: Abstraction has 9376 states and 13024 transitions. [2021-12-17 15:43:11,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:43:11,622 INFO L276 IsEmpty]: Start isEmpty. Operand 9376 states and 13024 transitions. [2021-12-17 15:43:11,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:43:11,623 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:43:11,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:43:11,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 15:43:11,623 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:43:11,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:43:11,624 INFO L85 PathProgramCache]: Analyzing trace with hash 574741367, now seen corresponding path program 1 times [2021-12-17 15:43:11,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:43:11,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872162244] [2021-12-17 15:43:11,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:43:11,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:43:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:11,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:43:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:11,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:43:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:11,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:43:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:11,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:43:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:11,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:43:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:11,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:43:11,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:43:11,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872162244] [2021-12-17 15:43:11,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872162244] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:43:11,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:43:11,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:43:11,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663579350] [2021-12-17 15:43:11,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:43:11,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:43:11,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:43:11,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:43:11,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:43:11,689 INFO L87 Difference]: Start difference. First operand 9376 states and 13024 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:43:13,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:43:13,667 INFO L93 Difference]: Finished difference Result 22768 states and 31702 transitions. [2021-12-17 15:43:13,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 15:43:13,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2021-12-17 15:43:13,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:43:13,697 INFO L225 Difference]: With dead ends: 22768 [2021-12-17 15:43:13,697 INFO L226 Difference]: Without dead ends: 13408 [2021-12-17 15:43:13,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-17 15:43:13,709 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 695 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 15:43:13,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [712 Valid, 784 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 15:43:13,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13408 states. [2021-12-17 15:43:14,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13408 to 9376. [2021-12-17 15:43:14,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9376 states, 8624 states have (on average 1.3566790352504638) internal successors, (11700), 8667 states have internal predecessors, (11700), 481 states have call successors, (481), 252 states have call predecessors, (481), 270 states have return successors, (771), 458 states have call predecessors, (771), 481 states have call successors, (771) [2021-12-17 15:43:14,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9376 states to 9376 states and 12952 transitions. [2021-12-17 15:43:14,622 INFO L78 Accepts]: Start accepts. Automaton has 9376 states and 12952 transitions. Word has length 115 [2021-12-17 15:43:14,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:43:14,622 INFO L470 AbstractCegarLoop]: Abstraction has 9376 states and 12952 transitions. [2021-12-17 15:43:14,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:43:14,622 INFO L276 IsEmpty]: Start isEmpty. Operand 9376 states and 12952 transitions. [2021-12-17 15:43:14,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:43:14,623 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:43:14,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:43:14,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-17 15:43:14,624 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:43:14,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:43:14,624 INFO L85 PathProgramCache]: Analyzing trace with hash 180374581, now seen corresponding path program 1 times [2021-12-17 15:43:14,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:43:14,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227082939] [2021-12-17 15:43:14,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:43:14,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:43:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:14,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:43:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:14,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:43:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:14,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:43:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:14,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:43:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:14,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:43:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:14,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:43:14,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:43:14,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227082939] [2021-12-17 15:43:14,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227082939] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:43:14,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:43:14,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:43:14,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417685448] [2021-12-17 15:43:14,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:43:14,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:43:14,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:43:14,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:43:14,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:43:14,692 INFO L87 Difference]: Start difference. First operand 9376 states and 12952 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:43:16,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:43:16,667 INFO L93 Difference]: Finished difference Result 22768 states and 31558 transitions. [2021-12-17 15:43:16,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 15:43:16,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2021-12-17 15:43:16,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:43:16,707 INFO L225 Difference]: With dead ends: 22768 [2021-12-17 15:43:16,708 INFO L226 Difference]: Without dead ends: 13408 [2021-12-17 15:43:16,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-17 15:43:16,730 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 846 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 15:43:16,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [863 Valid, 661 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 15:43:16,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13408 states. [2021-12-17 15:43:17,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13408 to 9376. [2021-12-17 15:43:17,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9376 states, 8624 states have (on average 1.348330241187384) internal successors, (11628), 8667 states have internal predecessors, (11628), 481 states have call successors, (481), 252 states have call predecessors, (481), 270 states have return successors, (771), 458 states have call predecessors, (771), 481 states have call successors, (771) [2021-12-17 15:43:17,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9376 states to 9376 states and 12880 transitions. [2021-12-17 15:43:17,728 INFO L78 Accepts]: Start accepts. Automaton has 9376 states and 12880 transitions. Word has length 115 [2021-12-17 15:43:17,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:43:17,728 INFO L470 AbstractCegarLoop]: Abstraction has 9376 states and 12880 transitions. [2021-12-17 15:43:17,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:43:17,729 INFO L276 IsEmpty]: Start isEmpty. Operand 9376 states and 12880 transitions. [2021-12-17 15:43:17,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:43:17,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:43:17,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:43:17,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-17 15:43:17,730 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:43:17,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:43:17,731 INFO L85 PathProgramCache]: Analyzing trace with hash 107988023, now seen corresponding path program 1 times [2021-12-17 15:43:17,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:43:17,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520504434] [2021-12-17 15:43:17,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:43:17,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:43:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:17,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:43:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:17,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:43:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:17,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:43:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:17,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:43:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:17,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:43:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:17,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:43:17,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:43:17,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520504434] [2021-12-17 15:43:17,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520504434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:43:17,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:43:17,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:43:17,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553734788] [2021-12-17 15:43:17,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:43:17,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:43:17,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:43:17,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:43:17,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:43:17,798 INFO L87 Difference]: Start difference. First operand 9376 states and 12880 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:43:19,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:43:19,760 INFO L93 Difference]: Finished difference Result 22768 states and 31378 transitions. [2021-12-17 15:43:19,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 15:43:19,761 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2021-12-17 15:43:19,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:43:19,789 INFO L225 Difference]: With dead ends: 22768 [2021-12-17 15:43:19,789 INFO L226 Difference]: Without dead ends: 13408 [2021-12-17 15:43:19,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-17 15:43:19,803 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 689 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 15:43:19,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [706 Valid, 772 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 15:43:19,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13408 states. [2021-12-17 15:43:20,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13408 to 9376. [2021-12-17 15:43:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9376 states, 8624 states have (on average 1.3399814471243043) internal successors, (11556), 8667 states have internal predecessors, (11556), 481 states have call successors, (481), 252 states have call predecessors, (481), 270 states have return successors, (771), 458 states have call predecessors, (771), 481 states have call successors, (771) [2021-12-17 15:43:20,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9376 states to 9376 states and 12808 transitions. [2021-12-17 15:43:20,786 INFO L78 Accepts]: Start accepts. Automaton has 9376 states and 12808 transitions. Word has length 115 [2021-12-17 15:43:20,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:43:20,787 INFO L470 AbstractCegarLoop]: Abstraction has 9376 states and 12808 transitions. [2021-12-17 15:43:20,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:43:20,787 INFO L276 IsEmpty]: Start isEmpty. Operand 9376 states and 12808 transitions. [2021-12-17 15:43:20,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:43:20,788 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:43:20,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:43:20,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-17 15:43:20,789 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:43:20,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:43:20,789 INFO L85 PathProgramCache]: Analyzing trace with hash 382747637, now seen corresponding path program 1 times [2021-12-17 15:43:20,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:43:20,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184856566] [2021-12-17 15:43:20,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:43:20,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:43:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:20,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:43:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:20,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:43:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:20,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:43:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:20,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:43:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:20,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:43:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:20,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:43:20,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:43:20,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184856566] [2021-12-17 15:43:20,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184856566] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:43:20,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:43:20,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:43:20,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480637256] [2021-12-17 15:43:20,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:43:20,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:43:20,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:43:20,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:43:20,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:43:20,858 INFO L87 Difference]: Start difference. First operand 9376 states and 12808 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:43:24,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:43:24,040 INFO L93 Difference]: Finished difference Result 27489 states and 37752 transitions. [2021-12-17 15:43:24,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 15:43:24,041 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2021-12-17 15:43:24,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:43:24,074 INFO L225 Difference]: With dead ends: 27489 [2021-12-17 15:43:24,074 INFO L226 Difference]: Without dead ends: 18128 [2021-12-17 15:43:24,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-12-17 15:43:24,093 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 1198 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 15:43:24,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1213 Valid, 751 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 15:43:24,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18128 states. [2021-12-17 15:43:25,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18128 to 11144. [2021-12-17 15:43:25,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11144 states, 10296 states have (on average 1.3073038073038072) internal successors, (13460), 10339 states have internal predecessors, (13460), 513 states have call successors, (513), 316 states have call predecessors, (513), 334 states have return successors, (927), 490 states have call predecessors, (927), 513 states have call successors, (927) [2021-12-17 15:43:25,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11144 states to 11144 states and 14900 transitions. [2021-12-17 15:43:25,373 INFO L78 Accepts]: Start accepts. Automaton has 11144 states and 14900 transitions. Word has length 115 [2021-12-17 15:43:25,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:43:25,374 INFO L470 AbstractCegarLoop]: Abstraction has 11144 states and 14900 transitions. [2021-12-17 15:43:25,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:43:25,374 INFO L276 IsEmpty]: Start isEmpty. Operand 11144 states and 14900 transitions. [2021-12-17 15:43:25,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:43:25,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:43:25,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:43:25,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-17 15:43:25,375 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:43:25,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:43:25,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1084347511, now seen corresponding path program 1 times [2021-12-17 15:43:25,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:43:25,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155148719] [2021-12-17 15:43:25,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:43:25,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:43:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:25,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:43:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:25,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:43:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:25,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:43:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:25,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:43:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:25,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:43:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:25,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:43:25,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:43:25,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155148719] [2021-12-17 15:43:25,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155148719] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:43:25,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:43:25,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:43:25,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769933888] [2021-12-17 15:43:25,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:43:25,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:43:25,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:43:25,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:43:25,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:43:25,453 INFO L87 Difference]: Start difference. First operand 11144 states and 14900 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:43:28,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:43:28,847 INFO L93 Difference]: Finished difference Result 30756 states and 41453 transitions. [2021-12-17 15:43:28,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 15:43:28,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2021-12-17 15:43:28,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:43:28,889 INFO L225 Difference]: With dead ends: 30756 [2021-12-17 15:43:28,889 INFO L226 Difference]: Without dead ends: 19628 [2021-12-17 15:43:28,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-12-17 15:43:28,913 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 892 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 15:43:28,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 846 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 15:43:28,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19628 states. [2021-12-17 15:43:30,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19628 to 13416. [2021-12-17 15:43:30,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13416 states, 12444 states have (on average 1.2814207650273224) internal successors, (15946), 12495 states have internal predecessors, (15946), 549 states have call successors, (549), 388 states have call predecessors, (549), 422 states have return successors, (1111), 534 states have call predecessors, (1111), 549 states have call successors, (1111) [2021-12-17 15:43:30,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13416 states to 13416 states and 17606 transitions. [2021-12-17 15:43:30,688 INFO L78 Accepts]: Start accepts. Automaton has 13416 states and 17606 transitions. Word has length 115 [2021-12-17 15:43:30,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:43:30,688 INFO L470 AbstractCegarLoop]: Abstraction has 13416 states and 17606 transitions. [2021-12-17 15:43:30,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:43:30,688 INFO L276 IsEmpty]: Start isEmpty. Operand 13416 states and 17606 transitions. [2021-12-17 15:43:30,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:43:30,689 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:43:30,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:43:30,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-17 15:43:30,690 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:43:30,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:43:30,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1106979765, now seen corresponding path program 1 times [2021-12-17 15:43:30,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:43:30,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136319078] [2021-12-17 15:43:30,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:43:30,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:43:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:30,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:43:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:30,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:43:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:30,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:43:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:30,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:43:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:30,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:43:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:30,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:43:30,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:43:30,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136319078] [2021-12-17 15:43:30,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136319078] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:43:30,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:43:30,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:43:30,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813480050] [2021-12-17 15:43:30,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:43:30,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:43:30,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:43:30,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:43:30,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:43:30,757 INFO L87 Difference]: Start difference. First operand 13416 states and 17606 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:43:34,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:43:34,319 INFO L93 Difference]: Finished difference Result 34492 states and 45760 transitions. [2021-12-17 15:43:34,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 15:43:34,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2021-12-17 15:43:34,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:43:34,373 INFO L225 Difference]: With dead ends: 34492 [2021-12-17 15:43:34,374 INFO L226 Difference]: Without dead ends: 21092 [2021-12-17 15:43:34,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-12-17 15:43:34,405 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 856 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 15:43:34,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 820 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 15:43:34,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21092 states. [2021-12-17 15:43:36,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21092 to 14662. [2021-12-17 15:43:36,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14662 states, 13614 states have (on average 1.2628176876744528) internal successors, (17192), 13673 states have internal predecessors, (17192), 569 states have call successors, (569), 428 states have call predecessors, (569), 478 states have return successors, (1191), 562 states have call predecessors, (1191), 569 states have call successors, (1191) [2021-12-17 15:43:36,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14662 states to 14662 states and 18952 transitions. [2021-12-17 15:43:36,614 INFO L78 Accepts]: Start accepts. Automaton has 14662 states and 18952 transitions. Word has length 115 [2021-12-17 15:43:36,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:43:36,614 INFO L470 AbstractCegarLoop]: Abstraction has 14662 states and 18952 transitions. [2021-12-17 15:43:36,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:43:36,614 INFO L276 IsEmpty]: Start isEmpty. Operand 14662 states and 18952 transitions. [2021-12-17 15:43:36,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:43:36,615 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:43:36,615 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:43:36,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-17 15:43:36,615 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:43:36,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:43:36,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1801784137, now seen corresponding path program 1 times [2021-12-17 15:43:36,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:43:36,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394678469] [2021-12-17 15:43:36,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:43:36,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:43:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:36,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:43:36,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:36,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:43:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:36,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:43:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:36,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:43:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:36,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:43:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:36,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:43:36,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:43:36,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394678469] [2021-12-17 15:43:36,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394678469] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:43:36,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:43:36,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 15:43:36,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696048560] [2021-12-17 15:43:36,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:43:36,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 15:43:36,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:43:36,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 15:43:36,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 15:43:36,687 INFO L87 Difference]: Start difference. First operand 14662 states and 18952 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:43:41,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:43:41,344 INFO L93 Difference]: Finished difference Result 32144 states and 42098 transitions. [2021-12-17 15:43:41,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 15:43:41,345 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2021-12-17 15:43:41,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:43:41,397 INFO L225 Difference]: With dead ends: 32144 [2021-12-17 15:43:41,397 INFO L226 Difference]: Without dead ends: 24770 [2021-12-17 15:43:41,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-17 15:43:41,416 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 1373 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 15:43:41,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1390 Valid, 1032 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 15:43:41,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24770 states. [2021-12-17 15:43:43,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24770 to 14590. [2021-12-17 15:43:43,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14590 states, 13560 states have (on average 1.2598820058997051) internal successors, (17084), 13601 states have internal predecessors, (17084), 569 states have call successors, (569), 428 states have call predecessors, (569), 460 states have return successors, (1154), 561 states have call predecessors, (1154), 569 states have call successors, (1154) [2021-12-17 15:43:43,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14590 states to 14590 states and 18807 transitions. [2021-12-17 15:43:43,450 INFO L78 Accepts]: Start accepts. Automaton has 14590 states and 18807 transitions. Word has length 115 [2021-12-17 15:43:43,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:43:43,450 INFO L470 AbstractCegarLoop]: Abstraction has 14590 states and 18807 transitions. [2021-12-17 15:43:43,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:43:43,451 INFO L276 IsEmpty]: Start isEmpty. Operand 14590 states and 18807 transitions. [2021-12-17 15:43:43,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:43:43,452 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:43:43,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:43:43,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-17 15:43:43,452 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:43:43,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:43:43,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1983710069, now seen corresponding path program 1 times [2021-12-17 15:43:43,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:43:43,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830530358] [2021-12-17 15:43:43,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:43:43,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:43:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:43,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:43:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:43,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:43:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:43,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:43:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:43,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:43:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:43,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:43:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:43,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:43:43,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:43:43,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830530358] [2021-12-17 15:43:43,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830530358] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:43:43,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:43:43,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:43:43,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349611305] [2021-12-17 15:43:43,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:43:43,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:43:43,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:43:43,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:43:43,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:43:43,513 INFO L87 Difference]: Start difference. First operand 14590 states and 18807 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:43:46,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:43:46,942 INFO L93 Difference]: Finished difference Result 36235 states and 47751 transitions. [2021-12-17 15:43:46,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 15:43:46,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2021-12-17 15:43:46,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:43:46,991 INFO L225 Difference]: With dead ends: 36235 [2021-12-17 15:43:46,991 INFO L226 Difference]: Without dead ends: 21660 [2021-12-17 15:43:47,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-12-17 15:43:47,021 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 796 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 15:43:47,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [814 Valid, 773 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 15:43:47,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21660 states. [2021-12-17 15:43:49,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21660 to 15584. [2021-12-17 15:43:49,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15584 states, 14478 states have (on average 1.234700925542202) internal successors, (17876), 14527 states have internal predecessors, (17876), 589 states have call successors, (589), 468 states have call predecessors, (589), 516 states have return successors, (1274), 589 states have call predecessors, (1274), 589 states have call successors, (1274) [2021-12-17 15:43:49,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15584 states to 15584 states and 19739 transitions. [2021-12-17 15:43:49,094 INFO L78 Accepts]: Start accepts. Automaton has 15584 states and 19739 transitions. Word has length 115 [2021-12-17 15:43:49,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:43:49,094 INFO L470 AbstractCegarLoop]: Abstraction has 15584 states and 19739 transitions. [2021-12-17 15:43:49,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:43:49,095 INFO L276 IsEmpty]: Start isEmpty. Operand 15584 states and 19739 transitions. [2021-12-17 15:43:49,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-17 15:43:49,095 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:43:49,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:43:49,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-17 15:43:49,096 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:43:49,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:43:49,096 INFO L85 PathProgramCache]: Analyzing trace with hash 2045749683, now seen corresponding path program 1 times [2021-12-17 15:43:49,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:43:49,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521296065] [2021-12-17 15:43:49,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:43:49,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:43:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:49,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:43:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:49,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:43:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:49,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:43:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:49,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:43:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:49,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:43:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:49,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:43:49,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:43:49,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521296065] [2021-12-17 15:43:49,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521296065] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:43:49,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:43:49,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:43:49,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217654555] [2021-12-17 15:43:49,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:43:49,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:43:49,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:43:49,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:43:49,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:43:49,151 INFO L87 Difference]: Start difference. First operand 15584 states and 19739 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:43:54,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:43:54,981 INFO L93 Difference]: Finished difference Result 54900 states and 69901 transitions. [2021-12-17 15:43:54,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 15:43:54,981 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2021-12-17 15:43:54,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:43:55,083 INFO L225 Difference]: With dead ends: 54900 [2021-12-17 15:43:55,083 INFO L226 Difference]: Without dead ends: 39332 [2021-12-17 15:43:55,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-17 15:43:55,122 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 1121 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 15:43:55,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1129 Valid, 671 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 15:43:55,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39332 states. [2021-12-17 15:43:59,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39332 to 29133. [2021-12-17 15:43:59,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29133 states, 27047 states have (on average 1.2286760084297703) internal successors, (33232), 27121 states have internal predecessors, (33232), 1113 states have call successors, (1113), 872 states have call predecessors, (1113), 972 states have return successors, (2451), 1141 states have call predecessors, (2451), 1113 states have call successors, (2451) [2021-12-17 15:43:59,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29133 states to 29133 states and 36796 transitions. [2021-12-17 15:43:59,237 INFO L78 Accepts]: Start accepts. Automaton has 29133 states and 36796 transitions. Word has length 115 [2021-12-17 15:43:59,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:43:59,238 INFO L470 AbstractCegarLoop]: Abstraction has 29133 states and 36796 transitions. [2021-12-17 15:43:59,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:43:59,238 INFO L276 IsEmpty]: Start isEmpty. Operand 29133 states and 36796 transitions. [2021-12-17 15:43:59,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-17 15:43:59,239 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:43:59,239 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:43:59,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-17 15:43:59,239 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:43:59,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:43:59,240 INFO L85 PathProgramCache]: Analyzing trace with hash 754203291, now seen corresponding path program 1 times [2021-12-17 15:43:59,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:43:59,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001781536] [2021-12-17 15:43:59,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:43:59,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:43:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:59,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:43:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:59,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:43:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:59,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:43:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:59,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:43:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:59,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:43:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:43:59,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:43:59,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:43:59,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001781536] [2021-12-17 15:43:59,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001781536] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:43:59,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:43:59,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:43:59,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215598250] [2021-12-17 15:43:59,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:43:59,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:43:59,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:43:59,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:43:59,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:43:59,294 INFO L87 Difference]: Start difference. First operand 29133 states and 36796 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-12-17 15:44:09,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:44:09,562 INFO L93 Difference]: Finished difference Result 100405 states and 127408 transitions. [2021-12-17 15:44:09,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 15:44:09,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 4 states have internal predecessors, (106), 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 116 [2021-12-17 15:44:09,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:44:09,725 INFO L225 Difference]: With dead ends: 100405 [2021-12-17 15:44:09,726 INFO L226 Difference]: Without dead ends: 71298 [2021-12-17 15:44:09,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-17 15:44:09,784 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 1084 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 15:44:09,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1092 Valid, 954 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 15:44:09,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71298 states. [2021-12-17 15:44:17,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71298 to 54191. [2021-12-17 15:44:17,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54191 states, 50277 states have (on average 1.2248940867593532) internal successors, (61584), 50441 states have internal predecessors, (61584), 2081 states have call successors, (2081), 1600 states have call predecessors, (2081), 1832 states have return successors, (4601), 2153 states have call predecessors, (4601), 2081 states have call successors, (4601) [2021-12-17 15:44:17,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54191 states to 54191 states and 68266 transitions. [2021-12-17 15:44:17,526 INFO L78 Accepts]: Start accepts. Automaton has 54191 states and 68266 transitions. Word has length 116 [2021-12-17 15:44:17,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:44:17,527 INFO L470 AbstractCegarLoop]: Abstraction has 54191 states and 68266 transitions. [2021-12-17 15:44:17,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-12-17 15:44:17,527 INFO L276 IsEmpty]: Start isEmpty. Operand 54191 states and 68266 transitions. [2021-12-17 15:44:17,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-17 15:44:17,528 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:44:17,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:44:17,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-17 15:44:17,529 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:44:17,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:44:17,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1218962087, now seen corresponding path program 1 times [2021-12-17 15:44:17,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:44:17,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838653402] [2021-12-17 15:44:17,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:44:17,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:44:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:44:17,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:44:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:44:17,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:44:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:44:17,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:44:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:44:17,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:44:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:44:17,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:44:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:44:17,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:44:17,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:44:17,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838653402] [2021-12-17 15:44:17,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838653402] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:44:17,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:44:17,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 15:44:17,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099265029] [2021-12-17 15:44:17,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:44:17,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 15:44:17,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:44:17,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 15:44:17,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 15:44:17,572 INFO L87 Difference]: Start difference. First operand 54191 states and 68266 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:44:28,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:44:28,702 INFO L93 Difference]: Finished difference Result 126082 states and 159398 transitions. [2021-12-17 15:44:28,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 15:44:28,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 116 [2021-12-17 15:44:28,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:44:28,899 INFO L225 Difference]: With dead ends: 126082 [2021-12-17 15:44:28,899 INFO L226 Difference]: Without dead ends: 71917 [2021-12-17 15:44:28,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 15:44:28,985 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 663 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 15:44:28,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [692 Valid, 471 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 15:44:29,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71917 states. [2021-12-17 15:44:36,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71917 to 54173. [2021-12-17 15:44:36,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54173 states, 50265 states have (on average 1.2247488311946682) internal successors, (61562), 50427 states have internal predecessors, (61562), 2075 states have call successors, (2075), 1600 states have call predecessors, (2075), 1832 states have return successors, (4595), 2147 states have call predecessors, (4595), 2075 states have call successors, (4595) [2021-12-17 15:44:37,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54173 states to 54173 states and 68232 transitions. [2021-12-17 15:44:37,068 INFO L78 Accepts]: Start accepts. Automaton has 54173 states and 68232 transitions. Word has length 116 [2021-12-17 15:44:37,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:44:37,069 INFO L470 AbstractCegarLoop]: Abstraction has 54173 states and 68232 transitions. [2021-12-17 15:44:37,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 15:44:37,069 INFO L276 IsEmpty]: Start isEmpty. Operand 54173 states and 68232 transitions. [2021-12-17 15:44:37,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-17 15:44:37,070 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:44:37,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:44:37,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-17 15:44:37,070 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:44:37,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:44:37,071 INFO L85 PathProgramCache]: Analyzing trace with hash -708214852, now seen corresponding path program 1 times [2021-12-17 15:44:37,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:44:37,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890242986] [2021-12-17 15:44:37,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:44:37,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:44:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:44:37,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 15:44:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:44:37,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:44:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:44:37,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 15:44:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:44:37,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 15:44:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:44:37,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 15:44:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:44:37,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:44:37,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:44:37,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890242986] [2021-12-17 15:44:37,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890242986] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:44:37,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:44:37,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:44:37,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892795875] [2021-12-17 15:44:37,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:44:37,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:44:37,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:44:37,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:44:37,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:44:37,130 INFO L87 Difference]: Start difference. First operand 54173 states and 68232 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 4 states have internal predecessors, (107), 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)