./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e7f05adfe3188223e40d6d03e9bb9b8e606803720f2852bb7411adc46181c52f --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 18:53:04,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 18:53:04,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 18:53:04,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 18:53:04,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 18:53:04,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 18:53:04,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 18:53:04,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 18:53:04,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 18:53:04,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 18:53:04,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 18:53:04,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 18:53:04,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 18:53:04,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 18:53:04,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 18:53:04,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 18:53:04,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 18:53:04,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 18:53:04,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 18:53:04,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 18:53:04,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 18:53:04,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 18:53:04,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 18:53:04,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 18:53:04,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 18:53:04,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 18:53:04,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 18:53:04,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 18:53:04,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 18:53:04,886 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 18:53:04,886 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 18:53:04,887 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 18:53:04,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 18:53:04,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 18:53:04,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 18:53:04,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 18:53:04,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 18:53:04,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 18:53:04,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 18:53:04,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 18:53:04,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 18:53:04,892 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 18:53:04,918 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 18:53:04,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 18:53:04,918 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 18:53:04,919 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 18:53:04,919 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 18:53:04,919 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 18:53:04,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 18:53:04,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 18:53:04,920 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 18:53:04,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 18:53:04,921 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 18:53:04,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 18:53:04,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 18:53:04,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 18:53:04,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 18:53:04,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 18:53:04,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 18:53:04,922 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 18:53:04,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 18:53:04,922 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 18:53:04,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 18:53:04,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 18:53:04,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 18:53:04,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 18:53:04,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 18:53:04,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 18:53:04,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 18:53:04,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 18:53:04,923 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 18:53:04,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 18:53:04,924 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 18:53:04,924 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 18:53:04,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 18:53:04,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 18:53:04,924 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7f05adfe3188223e40d6d03e9bb9b8e606803720f2852bb7411adc46181c52f [2021-12-17 18:53:05,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 18:53:05,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 18:53:05,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 18:53:05,159 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 18:53:05,159 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 18:53:05,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-1.c [2021-12-17 18:53:05,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6e9ef04c/1454f081678e45f4adcab7cca9250222/FLAG2333d6d2d [2021-12-17 18:53:05,974 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 18:53:05,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-1.c [2021-12-17 18:53:06,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6e9ef04c/1454f081678e45f4adcab7cca9250222/FLAG2333d6d2d [2021-12-17 18:53:06,239 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6e9ef04c/1454f081678e45f4adcab7cca9250222 [2021-12-17 18:53:06,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 18:53:06,243 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 18:53:06,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 18:53:06,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 18:53:06,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 18:53:06,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:53:06" (1/1) ... [2021-12-17 18:53:06,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75d95c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:06, skipping insertion in model container [2021-12-17 18:53:06,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:53:06" (1/1) ... [2021-12-17 18:53:06,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 18:53:06,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 18:53:07,642 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-1.c[378560,378573] [2021-12-17 18:53:07,667 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-1.c[383339,383352] [2021-12-17 18:53:07,905 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 18:53:07,915 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 18:53:08,491 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-1.c[378560,378573] [2021-12-17 18:53:08,497 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-1.c[383339,383352] [2021-12-17 18:53:08,508 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 18:53:08,548 INFO L208 MainTranslator]: Completed translation [2021-12-17 18:53:08,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:08 WrapperNode [2021-12-17 18:53:08,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 18:53:08,549 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 18:53:08,549 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 18:53:08,549 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 18:53:08,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:08" (1/1) ... [2021-12-17 18:53:08,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:08" (1/1) ... [2021-12-17 18:53:08,850 INFO L137 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13204 [2021-12-17 18:53:08,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 18:53:08,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 18:53:08,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 18:53:08,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 18:53:08,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:08" (1/1) ... [2021-12-17 18:53:08,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:08" (1/1) ... [2021-12-17 18:53:08,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:08" (1/1) ... [2021-12-17 18:53:08,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:08" (1/1) ... [2021-12-17 18:53:09,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:08" (1/1) ... [2021-12-17 18:53:09,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:08" (1/1) ... [2021-12-17 18:53:09,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:08" (1/1) ... [2021-12-17 18:53:09,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 18:53:09,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 18:53:09,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 18:53:09,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 18:53:09,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:08" (1/1) ... [2021-12-17 18:53:09,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 18:53:09,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:53:09,310 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 18:53:09,344 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 18:53:09,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 18:53:09,381 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-17 18:53:09,381 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-17 18:53:09,381 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 18:53:09,381 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 18:53:09,381 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-17 18:53:09,381 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-17 18:53:09,382 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-17 18:53:09,382 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-17 18:53:09,382 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-17 18:53:09,382 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-17 18:53:09,382 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-17 18:53:09,382 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-17 18:53:09,383 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-17 18:53:09,383 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-17 18:53:09,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 18:53:09,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 18:53:09,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 18:53:09,490 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 18:53:09,491 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 18:53:14,421 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 18:53:14,441 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 18:53:14,442 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-17 18:53:14,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:53:14 BoogieIcfgContainer [2021-12-17 18:53:14,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 18:53:14,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 18:53:14,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 18:53:14,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 18:53:14,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 06:53:06" (1/3) ... [2021-12-17 18:53:14,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e027e83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:53:14, skipping insertion in model container [2021-12-17 18:53:14,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:08" (2/3) ... [2021-12-17 18:53:14,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e027e83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:53:14, skipping insertion in model container [2021-12-17 18:53:14,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:53:14" (3/3) ... [2021-12-17 18:53:14,450 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.12.cil-1.c [2021-12-17 18:53:14,453 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 18:53:14,453 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 18:53:14,489 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 18:53:14,493 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 18:53:14,493 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 18:53:14,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 2573 states, 2535 states have (on average 1.8433925049309665) internal successors, (4673), 2540 states have internal predecessors, (4673), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-17 18:53:14,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:53:14,545 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:14,546 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:53:14,547 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:14,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:14,550 INFO L85 PathProgramCache]: Analyzing trace with hash -354915978, now seen corresponding path program 1 times [2021-12-17 18:53:14,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:14,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841529298] [2021-12-17 18:53:14,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:14,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:14,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:14,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:53:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:14,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:53:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:14,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:53:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:14,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:53:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:14,941 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 18:53:14,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:14,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841529298] [2021-12-17 18:53:14,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841529298] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:14,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:14,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 18:53:14,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882649934] [2021-12-17 18:53:14,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:14,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 18:53:14,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:14,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 18:53:14,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 18:53:14,970 INFO L87 Difference]: Start difference. First operand has 2573 states, 2535 states have (on average 1.8433925049309665) internal successors, (4673), 2540 states have internal predecessors, (4673), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:16,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:16,345 INFO L93 Difference]: Finished difference Result 5281 states and 9692 transitions. [2021-12-17 18:53:16,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 18:53:16,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:53:16,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:16,364 INFO L225 Difference]: With dead ends: 5281 [2021-12-17 18:53:16,364 INFO L226 Difference]: Without dead ends: 2647 [2021-12-17 18:53:16,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:53:16,374 INFO L933 BasicCegarLoop]: 4695 mSDtfsCounter, 1048 mSDsluCounter, 12503 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 17198 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:16,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 17198 Invalid, 767 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 18:53:16,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2021-12-17 18:53:16,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2505. [2021-12-17 18:53:16,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2469 states have (on average 1.8266504657756177) internal successors, (4510), 2472 states have internal predecessors, (4510), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-17 18:53:16,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4564 transitions. [2021-12-17 18:53:16,466 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4564 transitions. Word has length 179 [2021-12-17 18:53:16,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:16,466 INFO L470 AbstractCegarLoop]: Abstraction has 2505 states and 4564 transitions. [2021-12-17 18:53:16,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:16,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4564 transitions. [2021-12-17 18:53:16,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:53:16,470 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:16,470 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:53:16,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 18:53:16,471 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:16,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:16,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1148182328, now seen corresponding path program 1 times [2021-12-17 18:53:16,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:16,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149720968] [2021-12-17 18:53:16,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:16,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:16,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:16,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:53:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:16,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:53:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:16,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:53:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:16,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:53:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:16,623 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 18:53:16,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:16,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149720968] [2021-12-17 18:53:16,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149720968] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:16,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:16,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 18:53:16,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622621550] [2021-12-17 18:53:16,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:16,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 18:53:16,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:16,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 18:53:16,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 18:53:16,627 INFO L87 Difference]: Start difference. First operand 2505 states and 4564 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:17,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:17,800 INFO L93 Difference]: Finished difference Result 3016 states and 5390 transitions. [2021-12-17 18:53:17,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 18:53:17,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:53:17,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:17,810 INFO L225 Difference]: With dead ends: 3016 [2021-12-17 18:53:17,810 INFO L226 Difference]: Without dead ends: 2647 [2021-12-17 18:53:17,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:53:17,813 INFO L933 BasicCegarLoop]: 4625 mSDtfsCounter, 1034 mSDsluCounter, 12300 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 16925 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:17,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1058 Valid, 16925 Invalid, 766 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 18:53:17,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2021-12-17 18:53:17,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2505. [2021-12-17 18:53:17,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2469 states have (on average 1.8262454434993924) internal successors, (4509), 2472 states have internal predecessors, (4509), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-17 18:53:17,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4563 transitions. [2021-12-17 18:53:17,875 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4563 transitions. Word has length 179 [2021-12-17 18:53:17,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:17,876 INFO L470 AbstractCegarLoop]: Abstraction has 2505 states and 4563 transitions. [2021-12-17 18:53:17,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:17,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4563 transitions. [2021-12-17 18:53:17,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:53:17,878 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:17,878 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:53:17,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 18:53:17,879 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:17,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:17,879 INFO L85 PathProgramCache]: Analyzing trace with hash 577910522, now seen corresponding path program 1 times [2021-12-17 18:53:17,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:17,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481789705] [2021-12-17 18:53:17,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:17,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:17,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:17,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:53:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:17,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:53:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:18,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:53:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:18,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:53:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:18,105 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 18:53:18,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:18,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481789705] [2021-12-17 18:53:18,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481789705] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:18,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:18,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 18:53:18,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739446064] [2021-12-17 18:53:18,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:18,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 18:53:18,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:18,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 18:53:18,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 18:53:18,120 INFO L87 Difference]: Start difference. First operand 2505 states and 4563 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:20,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:20,527 INFO L93 Difference]: Finished difference Result 3535 states and 6234 transitions. [2021-12-17 18:53:20,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 18:53:20,528 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:53:20,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:20,538 INFO L225 Difference]: With dead ends: 3535 [2021-12-17 18:53:20,539 INFO L226 Difference]: Without dead ends: 3171 [2021-12-17 18:53:20,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:53:20,541 INFO L933 BasicCegarLoop]: 4677 mSDtfsCounter, 5525 mSDsluCounter, 12916 mSDsCounter, 0 mSdLazyCounter, 1956 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5544 SdHoareTripleChecker+Valid, 17593 SdHoareTripleChecker+Invalid, 2080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:20,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5544 Valid, 17593 Invalid, 2080 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 1956 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-17 18:53:20,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2021-12-17 18:53:20,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 2886. [2021-12-17 18:53:20,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2822 states have (on average 1.7983699503897945) internal successors, (5075), 2826 states have internal predecessors, (5075), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-12-17 18:53:20,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 5174 transitions. [2021-12-17 18:53:20,618 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 5174 transitions. Word has length 179 [2021-12-17 18:53:20,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:20,619 INFO L470 AbstractCegarLoop]: Abstraction has 2886 states and 5174 transitions. [2021-12-17 18:53:20,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:20,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 5174 transitions. [2021-12-17 18:53:20,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:53:20,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:20,621 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:53:20,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 18:53:20,622 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:20,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:20,622 INFO L85 PathProgramCache]: Analyzing trace with hash -807829258, now seen corresponding path program 1 times [2021-12-17 18:53:20,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:20,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314884674] [2021-12-17 18:53:20,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:20,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:20,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:20,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:53:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:20,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:53:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:20,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:53:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:20,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:53:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:20,749 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 18:53:20,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:20,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314884674] [2021-12-17 18:53:20,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314884674] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:20,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:20,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:20,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367106135] [2021-12-17 18:53:20,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:20,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:20,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:20,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:20,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:20,752 INFO L87 Difference]: Start difference. First operand 2886 states and 5174 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:23,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:23,569 INFO L93 Difference]: Finished difference Result 4458 states and 7728 transitions. [2021-12-17 18:53:23,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:53:23,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:53:23,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:23,612 INFO L225 Difference]: With dead ends: 4458 [2021-12-17 18:53:23,614 INFO L226 Difference]: Without dead ends: 3713 [2021-12-17 18:53:23,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:53:23,627 INFO L933 BasicCegarLoop]: 4988 mSDtfsCounter, 5553 mSDsluCounter, 17851 mSDsCounter, 0 mSdLazyCounter, 3072 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5572 SdHoareTripleChecker+Valid, 22839 SdHoareTripleChecker+Invalid, 3152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:23,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5572 Valid, 22839 Invalid, 3152 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 3072 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-17 18:53:23,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2021-12-17 18:53:23,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3240. [2021-12-17 18:53:23,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3240 states, 3148 states have (on average 1.7747776365946633) internal successors, (5587), 3153 states have internal predecessors, (5587), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2021-12-17 18:53:23,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3240 states to 3240 states and 5730 transitions. [2021-12-17 18:53:23,741 INFO L78 Accepts]: Start accepts. Automaton has 3240 states and 5730 transitions. Word has length 179 [2021-12-17 18:53:23,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:23,745 INFO L470 AbstractCegarLoop]: Abstraction has 3240 states and 5730 transitions. [2021-12-17 18:53:23,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:23,746 INFO L276 IsEmpty]: Start isEmpty. Operand 3240 states and 5730 transitions. [2021-12-17 18:53:23,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:53:23,747 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:23,748 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:53:23,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 18:53:23,748 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:23,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:23,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1717666424, now seen corresponding path program 1 times [2021-12-17 18:53:23,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:23,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749633515] [2021-12-17 18:53:23,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:23,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:23,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:23,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:53:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:23,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:53:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:23,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:53:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:23,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:53:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:23,930 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 18:53:23,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:23,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749633515] [2021-12-17 18:53:23,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749633515] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:23,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:23,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:23,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517107508] [2021-12-17 18:53:23,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:23,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:23,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:23,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:23,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:23,933 INFO L87 Difference]: Start difference. First operand 3240 states and 5730 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:26,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:26,729 INFO L93 Difference]: Finished difference Result 5819 states and 9912 transitions. [2021-12-17 18:53:26,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:53:26,729 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:53:26,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:26,746 INFO L225 Difference]: With dead ends: 5819 [2021-12-17 18:53:26,746 INFO L226 Difference]: Without dead ends: 4720 [2021-12-17 18:53:26,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:53:26,752 INFO L933 BasicCegarLoop]: 4721 mSDtfsCounter, 5664 mSDsluCounter, 17170 mSDsCounter, 0 mSdLazyCounter, 2725 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5683 SdHoareTripleChecker+Valid, 21891 SdHoareTripleChecker+Invalid, 2848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:26,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5683 Valid, 21891 Invalid, 2848 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 2725 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-17 18:53:26,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4720 states. [2021-12-17 18:53:26,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4720 to 3949. [2021-12-17 18:53:26,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3949 states, 3801 states have (on average 1.739542225730071) internal successors, (6612), 3808 states have internal predecessors, (6612), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-17 18:53:26,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3949 states to 3949 states and 6847 transitions. [2021-12-17 18:53:26,856 INFO L78 Accepts]: Start accepts. Automaton has 3949 states and 6847 transitions. Word has length 179 [2021-12-17 18:53:26,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:26,857 INFO L470 AbstractCegarLoop]: Abstraction has 3949 states and 6847 transitions. [2021-12-17 18:53:26,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand 3949 states and 6847 transitions. [2021-12-17 18:53:26,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:53:26,859 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:26,859 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:53:26,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 18:53:26,860 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:26,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:26,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1106397366, now seen corresponding path program 1 times [2021-12-17 18:53:26,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:26,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802321477] [2021-12-17 18:53:26,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:26,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:26,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:27,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:53:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:27,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:53:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:27,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:53:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:27,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:53:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:27,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:27,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:27,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802321477] [2021-12-17 18:53:27,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802321477] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:27,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:27,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:27,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770147727] [2021-12-17 18:53:27,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:27,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:27,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:27,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:27,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:27,075 INFO L87 Difference]: Start difference. First operand 3949 states and 6847 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:29,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:29,948 INFO L93 Difference]: Finished difference Result 8436 states and 14085 transitions. [2021-12-17 18:53:29,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:53:29,949 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:53:29,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:29,970 INFO L225 Difference]: With dead ends: 8436 [2021-12-17 18:53:29,970 INFO L226 Difference]: Without dead ends: 6628 [2021-12-17 18:53:29,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:53:29,976 INFO L933 BasicCegarLoop]: 4976 mSDtfsCounter, 5548 mSDsluCounter, 17847 mSDsCounter, 0 mSdLazyCounter, 3075 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5567 SdHoareTripleChecker+Valid, 22823 SdHoareTripleChecker+Invalid, 3160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:29,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5567 Valid, 22823 Invalid, 3160 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 3075 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-17 18:53:29,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6628 states. [2021-12-17 18:53:30,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6628 to 5368. [2021-12-17 18:53:30,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5368 states, 5108 states have (on average 1.6957713390759592) internal successors, (8662), 5119 states have internal predecessors, (8662), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2021-12-17 18:53:30,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5368 states to 5368 states and 9087 transitions. [2021-12-17 18:53:30,262 INFO L78 Accepts]: Start accepts. Automaton has 5368 states and 9087 transitions. Word has length 179 [2021-12-17 18:53:30,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:30,262 INFO L470 AbstractCegarLoop]: Abstraction has 5368 states and 9087 transitions. [2021-12-17 18:53:30,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:30,263 INFO L276 IsEmpty]: Start isEmpty. Operand 5368 states and 9087 transitions. [2021-12-17 18:53:30,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:53:30,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:30,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:53:30,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 18:53:30,266 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:30,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:30,271 INFO L85 PathProgramCache]: Analyzing trace with hash -298794312, now seen corresponding path program 1 times [2021-12-17 18:53:30,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:30,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714616035] [2021-12-17 18:53:30,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:30,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:30,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:30,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:53:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:30,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:53:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:30,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:53:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:30,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:53:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:30,413 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 18:53:30,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:30,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714616035] [2021-12-17 18:53:30,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714616035] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:30,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:30,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:30,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67819881] [2021-12-17 18:53:30,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:30,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:30,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:30,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:30,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:30,416 INFO L87 Difference]: Start difference. First operand 5368 states and 9087 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:33,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:33,609 INFO L93 Difference]: Finished difference Result 13662 states and 22435 transitions. [2021-12-17 18:53:33,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:53:33,610 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:53:33,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:33,701 INFO L225 Difference]: With dead ends: 13662 [2021-12-17 18:53:33,701 INFO L226 Difference]: Without dead ends: 10435 [2021-12-17 18:53:33,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:53:33,712 INFO L933 BasicCegarLoop]: 4968 mSDtfsCounter, 5543 mSDsluCounter, 17847 mSDsCounter, 0 mSdLazyCounter, 3055 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5562 SdHoareTripleChecker+Valid, 22815 SdHoareTripleChecker+Invalid, 3141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:33,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5562 Valid, 22815 Invalid, 3141 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3055 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-17 18:53:33,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10435 states. [2021-12-17 18:53:33,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10435 to 8220. [2021-12-17 18:53:33,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8220 states, 7736 states have (on average 1.6527921406411583) internal successors, (12786), 7755 states have internal predecessors, (12786), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2021-12-17 18:53:34,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8220 states to 8220 states and 13609 transitions. [2021-12-17 18:53:34,009 INFO L78 Accepts]: Start accepts. Automaton has 8220 states and 13609 transitions. Word has length 179 [2021-12-17 18:53:34,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:34,010 INFO L470 AbstractCegarLoop]: Abstraction has 8220 states and 13609 transitions. [2021-12-17 18:53:34,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:34,010 INFO L276 IsEmpty]: Start isEmpty. Operand 8220 states and 13609 transitions. [2021-12-17 18:53:34,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:53:34,013 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:34,013 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:53:34,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 18:53:34,014 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:34,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:34,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1147786554, now seen corresponding path program 1 times [2021-12-17 18:53:34,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:34,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146942640] [2021-12-17 18:53:34,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:34,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:34,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:34,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:53:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:34,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:53:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:34,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:53:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:34,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:53:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:34,140 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 18:53:34,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:34,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146942640] [2021-12-17 18:53:34,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146942640] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:34,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:34,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:34,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203456806] [2021-12-17 18:53:34,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:34,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:34,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:34,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:34,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:34,143 INFO L87 Difference]: Start difference. First operand 8220 states and 13609 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:37,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:37,509 INFO L93 Difference]: Finished difference Result 24132 states and 39227 transitions. [2021-12-17 18:53:37,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:53:37,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:53:37,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:37,562 INFO L225 Difference]: With dead ends: 24132 [2021-12-17 18:53:37,562 INFO L226 Difference]: Without dead ends: 18053 [2021-12-17 18:53:37,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:53:37,584 INFO L933 BasicCegarLoop]: 4963 mSDtfsCounter, 5542 mSDsluCounter, 17847 mSDsCounter, 0 mSdLazyCounter, 3047 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5561 SdHoareTripleChecker+Valid, 22810 SdHoareTripleChecker+Invalid, 3133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:37,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5561 Valid, 22810 Invalid, 3133 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3047 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-17 18:53:37,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18053 states. [2021-12-17 18:53:38,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18053 to 13937. [2021-12-17 18:53:38,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13937 states, 13005 states have (on average 1.6187620146097654) internal successors, (21052), 13040 states have internal predecessors, (21052), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-17 18:53:38,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13937 states to 13937 states and 22725 transitions. [2021-12-17 18:53:38,293 INFO L78 Accepts]: Start accepts. Automaton has 13937 states and 22725 transitions. Word has length 179 [2021-12-17 18:53:38,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:38,293 INFO L470 AbstractCegarLoop]: Abstraction has 13937 states and 22725 transitions. [2021-12-17 18:53:38,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:38,294 INFO L276 IsEmpty]: Start isEmpty. Operand 13937 states and 22725 transitions. [2021-12-17 18:53:38,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:53:38,300 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:38,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:53:38,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 18:53:38,301 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:38,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:38,302 INFO L85 PathProgramCache]: Analyzing trace with hash 224619128, now seen corresponding path program 1 times [2021-12-17 18:53:38,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:38,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240431284] [2021-12-17 18:53:38,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:38,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:38,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:38,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:53:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:38,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:53:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:38,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:53:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:38,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:53:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:38,438 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 18:53:38,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:38,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240431284] [2021-12-17 18:53:38,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240431284] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:38,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:38,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:38,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560343938] [2021-12-17 18:53:38,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:38,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:38,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:38,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:38,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:38,441 INFO L87 Difference]: Start difference. First operand 13937 states and 22725 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:40,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:40,572 INFO L93 Difference]: Finished difference Result 30100 states and 49050 transitions. [2021-12-17 18:53:40,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:53:40,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:53:40,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:40,621 INFO L225 Difference]: With dead ends: 30100 [2021-12-17 18:53:40,622 INFO L226 Difference]: Without dead ends: 18304 [2021-12-17 18:53:40,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:53:40,654 INFO L933 BasicCegarLoop]: 4601 mSDtfsCounter, 5093 mSDsluCounter, 16797 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5113 SdHoareTripleChecker+Valid, 21398 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:40,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5113 Valid, 21398 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:53:40,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18304 states. [2021-12-17 18:53:41,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18304 to 13937. [2021-12-17 18:53:41,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13937 states, 13005 states have (on average 1.6162245290272972) internal successors, (21019), 13040 states have internal predecessors, (21019), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-17 18:53:41,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13937 states to 13937 states and 22692 transitions. [2021-12-17 18:53:41,186 INFO L78 Accepts]: Start accepts. Automaton has 13937 states and 22692 transitions. Word has length 179 [2021-12-17 18:53:41,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:41,186 INFO L470 AbstractCegarLoop]: Abstraction has 13937 states and 22692 transitions. [2021-12-17 18:53:41,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:41,187 INFO L276 IsEmpty]: Start isEmpty. Operand 13937 states and 22692 transitions. [2021-12-17 18:53:41,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:53:41,198 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:41,199 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:53:41,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 18:53:41,199 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:41,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:41,201 INFO L85 PathProgramCache]: Analyzing trace with hash 610481530, now seen corresponding path program 1 times [2021-12-17 18:53:41,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:41,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161792954] [2021-12-17 18:53:41,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:41,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:41,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:41,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:53:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:41,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:53:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:41,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:53:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:41,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:53:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:41,331 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 18:53:41,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:41,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161792954] [2021-12-17 18:53:41,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161792954] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:41,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:41,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:41,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126643599] [2021-12-17 18:53:41,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:41,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:41,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:41,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:41,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:41,333 INFO L87 Difference]: Start difference. First operand 13937 states and 22692 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:43,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:43,192 INFO L93 Difference]: Finished difference Result 30066 states and 48883 transitions. [2021-12-17 18:53:43,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:53:43,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:53:43,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:43,240 INFO L225 Difference]: With dead ends: 30066 [2021-12-17 18:53:43,241 INFO L226 Difference]: Without dead ends: 18270 [2021-12-17 18:53:43,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:53:43,262 INFO L933 BasicCegarLoop]: 4597 mSDtfsCounter, 5258 mSDsluCounter, 12637 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5278 SdHoareTripleChecker+Valid, 17234 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:43,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5278 Valid, 17234 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 18:53:43,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18270 states. [2021-12-17 18:53:43,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18270 to 13937. [2021-12-17 18:53:43,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13937 states, 13005 states have (on average 1.613687043444829) internal successors, (20986), 13040 states have internal predecessors, (20986), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-17 18:53:43,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13937 states to 13937 states and 22659 transitions. [2021-12-17 18:53:43,820 INFO L78 Accepts]: Start accepts. Automaton has 13937 states and 22659 transitions. Word has length 179 [2021-12-17 18:53:43,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:43,820 INFO L470 AbstractCegarLoop]: Abstraction has 13937 states and 22659 transitions. [2021-12-17 18:53:43,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:43,821 INFO L276 IsEmpty]: Start isEmpty. Operand 13937 states and 22659 transitions. [2021-12-17 18:53:43,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:53:43,827 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:43,827 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:53:43,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 18:53:43,828 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:43,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:43,828 INFO L85 PathProgramCache]: Analyzing trace with hash 345834040, now seen corresponding path program 1 times [2021-12-17 18:53:43,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:43,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000967587] [2021-12-17 18:53:43,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:43,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:43,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:43,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:53:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:43,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:53:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:43,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:53:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:43,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:53:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:43,941 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 18:53:43,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:43,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000967587] [2021-12-17 18:53:43,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000967587] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:43,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:43,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:43,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741454187] [2021-12-17 18:53:43,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:43,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:43,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:43,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:43,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:43,943 INFO L87 Difference]: Start difference. First operand 13937 states and 22659 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:47,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:47,940 INFO L93 Difference]: Finished difference Result 45003 states and 72537 transitions. [2021-12-17 18:53:47,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:53:47,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:53:47,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:48,028 INFO L225 Difference]: With dead ends: 45003 [2021-12-17 18:53:48,028 INFO L226 Difference]: Without dead ends: 33207 [2021-12-17 18:53:48,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:53:48,057 INFO L933 BasicCegarLoop]: 4946 mSDtfsCounter, 5527 mSDsluCounter, 17847 mSDsCounter, 0 mSdLazyCounter, 3001 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5546 SdHoareTripleChecker+Valid, 22793 SdHoareTripleChecker+Invalid, 3087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:48,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5546 Valid, 22793 Invalid, 3087 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3001 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-17 18:53:48,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33207 states. [2021-12-17 18:53:49,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33207 to 25468. [2021-12-17 18:53:49,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25468 states, 23640 states have (on average 1.58917089678511) internal successors, (37568), 23707 states have internal predecessors, (37568), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2021-12-17 18:53:49,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25468 states to 25468 states and 41103 transitions. [2021-12-17 18:53:49,262 INFO L78 Accepts]: Start accepts. Automaton has 25468 states and 41103 transitions. Word has length 179 [2021-12-17 18:53:49,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:49,263 INFO L470 AbstractCegarLoop]: Abstraction has 25468 states and 41103 transitions. [2021-12-17 18:53:49,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:49,263 INFO L276 IsEmpty]: Start isEmpty. Operand 25468 states and 41103 transitions. [2021-12-17 18:53:49,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:53:49,274 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:49,274 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:53:49,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 18:53:49,275 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:49,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:49,275 INFO L85 PathProgramCache]: Analyzing trace with hash -2018007622, now seen corresponding path program 1 times [2021-12-17 18:53:49,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:49,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28250338] [2021-12-17 18:53:49,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:49,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:49,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:49,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:53:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:49,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:53:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:49,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:53:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:49,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:53:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:49,383 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 18:53:49,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:49,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28250338] [2021-12-17 18:53:49,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28250338] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:49,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:49,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:49,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438479873] [2021-12-17 18:53:49,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:49,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:49,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:49,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:49,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:49,385 INFO L87 Difference]: Start difference. First operand 25468 states and 41103 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:52,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:52,484 INFO L93 Difference]: Finished difference Result 56996 states and 92550 transitions. [2021-12-17 18:53:52,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:53:52,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:53:52,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:52,578 INFO L225 Difference]: With dead ends: 56996 [2021-12-17 18:53:52,578 INFO L226 Difference]: Without dead ends: 33669 [2021-12-17 18:53:52,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:53:52,624 INFO L933 BasicCegarLoop]: 4558 mSDtfsCounter, 5152 mSDsluCounter, 16796 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 21354 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:52,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5172 Valid, 21354 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:53:52,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33669 states. [2021-12-17 18:53:53,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33669 to 25468. [2021-12-17 18:53:53,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25468 states, 23640 states have (on average 1.5864213197969543) internal successors, (37503), 23707 states have internal predecessors, (37503), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2021-12-17 18:53:53,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25468 states to 25468 states and 41038 transitions. [2021-12-17 18:53:53,747 INFO L78 Accepts]: Start accepts. Automaton has 25468 states and 41038 transitions. Word has length 179 [2021-12-17 18:53:53,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:53,747 INFO L470 AbstractCegarLoop]: Abstraction has 25468 states and 41038 transitions. [2021-12-17 18:53:53,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:53,747 INFO L276 IsEmpty]: Start isEmpty. Operand 25468 states and 41038 transitions. [2021-12-17 18:53:53,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:53:53,760 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:53,760 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:53:53,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 18:53:53,761 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:53,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:53,761 INFO L85 PathProgramCache]: Analyzing trace with hash 953780728, now seen corresponding path program 1 times [2021-12-17 18:53:53,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:53,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089842947] [2021-12-17 18:53:53,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:53,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:53,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:53,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:53:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:53,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:53:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:53,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:53:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:53,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:53:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:53,870 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 18:53:53,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:53,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089842947] [2021-12-17 18:53:53,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089842947] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:53,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:53,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:53,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158831046] [2021-12-17 18:53:53,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:53,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:53,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:53,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:53,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:53,872 INFO L87 Difference]: Start difference. First operand 25468 states and 41038 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:56,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:56,703 INFO L93 Difference]: Finished difference Result 56930 states and 92223 transitions. [2021-12-17 18:53:56,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:53:56,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:53:56,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:56,800 INFO L225 Difference]: With dead ends: 56930 [2021-12-17 18:53:56,801 INFO L226 Difference]: Without dead ends: 33603 [2021-12-17 18:53:56,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:53:56,964 INFO L933 BasicCegarLoop]: 4584 mSDtfsCounter, 5090 mSDsluCounter, 16797 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5110 SdHoareTripleChecker+Valid, 21381 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:56,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5110 Valid, 21381 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:53:56,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33603 states. [2021-12-17 18:53:58,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33603 to 25468. [2021-12-17 18:53:58,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25468 states, 23640 states have (on average 1.5836717428087987) internal successors, (37438), 23707 states have internal predecessors, (37438), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2021-12-17 18:53:58,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25468 states to 25468 states and 40973 transitions. [2021-12-17 18:53:58,114 INFO L78 Accepts]: Start accepts. Automaton has 25468 states and 40973 transitions. Word has length 179 [2021-12-17 18:53:58,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:58,114 INFO L470 AbstractCegarLoop]: Abstraction has 25468 states and 40973 transitions. [2021-12-17 18:53:58,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:58,115 INFO L276 IsEmpty]: Start isEmpty. Operand 25468 states and 40973 transitions. [2021-12-17 18:53:58,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:53:58,124 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:58,124 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:53:58,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 18:53:58,125 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:58,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:58,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1444207110, now seen corresponding path program 1 times [2021-12-17 18:53:58,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:58,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292028529] [2021-12-17 18:53:58,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:58,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:58,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:58,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:53:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:58,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:53:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:58,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:53:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:58,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:53:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:58,294 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 18:53:58,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:58,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292028529] [2021-12-17 18:53:58,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292028529] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:58,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:58,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:58,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109341303] [2021-12-17 18:53:58,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:58,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:58,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:58,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:58,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:58,297 INFO L87 Difference]: Start difference. First operand 25468 states and 40973 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:01,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:01,031 INFO L93 Difference]: Finished difference Result 56798 states and 91764 transitions. [2021-12-17 18:54:01,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:01,032 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:54:01,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:01,133 INFO L225 Difference]: With dead ends: 56798 [2021-12-17 18:54:01,133 INFO L226 Difference]: Without dead ends: 33471 [2021-12-17 18:54:01,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:54:01,182 INFO L933 BasicCegarLoop]: 4578 mSDtfsCounter, 5252 mSDsluCounter, 12635 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5272 SdHoareTripleChecker+Valid, 17213 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:01,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5272 Valid, 17213 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 18:54:01,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33471 states. [2021-12-17 18:54:02,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33471 to 25468. [2021-12-17 18:54:02,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25468 states, 23640 states have (on average 1.580922165820643) internal successors, (37373), 23707 states have internal predecessors, (37373), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2021-12-17 18:54:02,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25468 states to 25468 states and 40908 transitions. [2021-12-17 18:54:02,648 INFO L78 Accepts]: Start accepts. Automaton has 25468 states and 40908 transitions. Word has length 179 [2021-12-17 18:54:02,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:02,648 INFO L470 AbstractCegarLoop]: Abstraction has 25468 states and 40908 transitions. [2021-12-17 18:54:02,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:02,649 INFO L276 IsEmpty]: Start isEmpty. Operand 25468 states and 40908 transitions. [2021-12-17 18:54:02,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:54:02,658 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:02,658 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:54:02,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 18:54:02,659 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:02,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:02,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1017652612, now seen corresponding path program 1 times [2021-12-17 18:54:02,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:02,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942863255] [2021-12-17 18:54:02,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:02,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:02,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:02,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:54:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:02,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:54:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:02,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:54:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:02,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:54:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:02,784 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 18:54:02,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:02,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942863255] [2021-12-17 18:54:02,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942863255] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:02,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:02,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:02,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133601369] [2021-12-17 18:54:02,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:02,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:02,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:02,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:02,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:02,786 INFO L87 Difference]: Start difference. First operand 25468 states and 40908 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:10,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:10,403 INFO L93 Difference]: Finished difference Result 97180 states and 155129 transitions. [2021-12-17 18:54:10,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 18:54:10,404 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:54:10,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:10,623 INFO L225 Difference]: With dead ends: 97180 [2021-12-17 18:54:10,623 INFO L226 Difference]: Without dead ends: 73853 [2021-12-17 18:54:10,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 18:54:10,688 INFO L933 BasicCegarLoop]: 5102 mSDtfsCounter, 5616 mSDsluCounter, 17836 mSDsCounter, 0 mSdLazyCounter, 3464 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5634 SdHoareTripleChecker+Valid, 22938 SdHoareTripleChecker+Invalid, 3555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:10,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5634 Valid, 22938 Invalid, 3555 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 3464 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-17 18:54:10,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73853 states. [2021-12-17 18:54:13,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73853 to 48017. [2021-12-17 18:54:13,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48017 states, 44461 states have (on average 1.562695395965003) internal successors, (69479), 44592 states have internal predecessors, (69479), 2652 states have call successors, (2652), 775 states have call predecessors, (2652), 902 states have return successors, (4965), 2777 states have call predecessors, (4965), 2650 states have call successors, (4965) [2021-12-17 18:54:13,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48017 states to 48017 states and 77096 transitions. [2021-12-17 18:54:13,629 INFO L78 Accepts]: Start accepts. Automaton has 48017 states and 77096 transitions. Word has length 179 [2021-12-17 18:54:13,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:13,629 INFO L470 AbstractCegarLoop]: Abstraction has 48017 states and 77096 transitions. [2021-12-17 18:54:13,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:13,630 INFO L276 IsEmpty]: Start isEmpty. Operand 48017 states and 77096 transitions. [2021-12-17 18:54:13,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:54:13,645 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:13,645 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:54:13,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 18:54:13,646 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:13,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:13,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1558082118, now seen corresponding path program 1 times [2021-12-17 18:54:13,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:13,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334780464] [2021-12-17 18:54:13,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:13,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:13,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:13,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:54:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:13,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:54:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:13,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:54:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:13,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:54:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:13,755 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 18:54:13,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:13,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334780464] [2021-12-17 18:54:13,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334780464] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:13,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:13,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:13,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362614903] [2021-12-17 18:54:13,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:13,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:13,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:13,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:13,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:13,757 INFO L87 Difference]: Start difference. First operand 48017 states and 77096 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:18,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:18,995 INFO L93 Difference]: Finished difference Result 108996 states and 176851 transitions. [2021-12-17 18:54:18,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:18,995 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:54:18,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:19,267 INFO L225 Difference]: With dead ends: 108996 [2021-12-17 18:54:19,267 INFO L226 Difference]: Without dead ends: 63120 [2021-12-17 18:54:19,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:54:19,355 INFO L933 BasicCegarLoop]: 4571 mSDtfsCounter, 5084 mSDsluCounter, 16795 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5104 SdHoareTripleChecker+Valid, 21366 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:19,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5104 Valid, 21366 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:54:19,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63120 states. [2021-12-17 18:54:22,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63120 to 48017. [2021-12-17 18:54:22,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48017 states, 44461 states have (on average 1.559793976743663) internal successors, (69350), 44592 states have internal predecessors, (69350), 2652 states have call successors, (2652), 775 states have call predecessors, (2652), 902 states have return successors, (4965), 2777 states have call predecessors, (4965), 2650 states have call successors, (4965) [2021-12-17 18:54:22,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48017 states to 48017 states and 76967 transitions. [2021-12-17 18:54:22,333 INFO L78 Accepts]: Start accepts. Automaton has 48017 states and 76967 transitions. Word has length 179 [2021-12-17 18:54:22,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:22,333 INFO L470 AbstractCegarLoop]: Abstraction has 48017 states and 76967 transitions. [2021-12-17 18:54:22,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:22,333 INFO L276 IsEmpty]: Start isEmpty. Operand 48017 states and 76967 transitions. [2021-12-17 18:54:22,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:54:22,349 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:22,349 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:54:22,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 18:54:22,349 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:22,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:22,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1714062660, now seen corresponding path program 1 times [2021-12-17 18:54:22,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:22,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394072927] [2021-12-17 18:54:22,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:22,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:22,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:22,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:54:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:22,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:54:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:22,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:54:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:22,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:54:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:22,605 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 18:54:22,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:22,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394072927] [2021-12-17 18:54:22,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394072927] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:22,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:22,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:22,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557705975] [2021-12-17 18:54:22,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:22,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:22,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:22,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:22,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:22,607 INFO L87 Difference]: Start difference. First operand 48017 states and 76967 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:35,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:35,535 INFO L93 Difference]: Finished difference Result 185421 states and 297311 transitions. [2021-12-17 18:54:35,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 18:54:35,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:54:35,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:36,002 INFO L225 Difference]: With dead ends: 185421 [2021-12-17 18:54:36,003 INFO L226 Difference]: Without dead ends: 139545 [2021-12-17 18:54:36,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 18:54:36,112 INFO L933 BasicCegarLoop]: 4904 mSDtfsCounter, 5865 mSDsluCounter, 17839 mSDsCounter, 0 mSdLazyCounter, 2889 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5897 SdHoareTripleChecker+Valid, 22743 SdHoareTripleChecker+Invalid, 2983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:36,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5897 Valid, 22743 Invalid, 2983 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [94 Valid, 2889 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-17 18:54:36,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139545 states.