./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.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/pc_sfifo_2.cil-1+token_ring.08.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 7889f6823684efa4d90d392ed393927ee5c2d2eb45f6dbf47b7c030213ef334f --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 21:05:38,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 21:05:38,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 21:05:38,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 21:05:38,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 21:05:38,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 21:05:38,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 21:05:38,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 21:05:38,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 21:05:38,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 21:05:38,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 21:05:38,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 21:05:38,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 21:05:38,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 21:05:38,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 21:05:38,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 21:05:38,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 21:05:38,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 21:05:38,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 21:05:38,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 21:05:38,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 21:05:38,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 21:05:38,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 21:05:38,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 21:05:38,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 21:05:38,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 21:05:38,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 21:05:38,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 21:05:38,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 21:05:38,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 21:05:38,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 21:05:38,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 21:05:38,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 21:05:38,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 21:05:38,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 21:05:38,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 21:05:38,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 21:05:38,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 21:05:38,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 21:05:38,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 21:05:38,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 21:05:38,170 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 21:05:38,193 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 21:05:38,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 21:05:38,193 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 21:05:38,194 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 21:05:38,194 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 21:05:38,194 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 21:05:38,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 21:05:38,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 21:05:38,195 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 21:05:38,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 21:05:38,196 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 21:05:38,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 21:05:38,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 21:05:38,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 21:05:38,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 21:05:38,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 21:05:38,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 21:05:38,197 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 21:05:38,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 21:05:38,197 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 21:05:38,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 21:05:38,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 21:05:38,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 21:05:38,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 21:05:38,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 21:05:38,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 21:05:38,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 21:05:38,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 21:05:38,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 21:05:38,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 21:05:38,199 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 21:05:38,199 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 21:05:38,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 21:05:38,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 21:05:38,200 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7889f6823684efa4d90d392ed393927ee5c2d2eb45f6dbf47b7c030213ef334f [2021-12-17 21:05:38,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 21:05:38,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 21:05:38,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 21:05:38,429 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 21:05:38,430 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 21:05:38,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-1.c [2021-12-17 21:05:38,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/509f96983/e0a7b9b8578b49b9b3280e8141ed5d67/FLAGaf9b2e3a9 [2021-12-17 21:05:38,847 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 21:05:38,848 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-1.c [2021-12-17 21:05:38,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/509f96983/e0a7b9b8578b49b9b3280e8141ed5d67/FLAGaf9b2e3a9 [2021-12-17 21:05:38,874 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/509f96983/e0a7b9b8578b49b9b3280e8141ed5d67 [2021-12-17 21:05:38,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 21:05:38,877 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 21:05:38,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 21:05:38,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 21:05:38,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 21:05:38,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 09:05:38" (1/1) ... [2021-12-17 21:05:38,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11bf7dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:38, skipping insertion in model container [2021-12-17 21:05:38,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 09:05:38" (1/1) ... [2021-12-17 21:05:38,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 21:05:38,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 21:05:39,044 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/pc_sfifo_2.cil-1+token_ring.08.cil-1.c[914,927] [2021-12-17 21:05:39,072 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/pc_sfifo_2.cil-1+token_ring.08.cil-1.c[7115,7128] [2021-12-17 21:05:39,112 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 21:05:39,119 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 21:05:39,126 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/pc_sfifo_2.cil-1+token_ring.08.cil-1.c[914,927] [2021-12-17 21:05:39,136 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/pc_sfifo_2.cil-1+token_ring.08.cil-1.c[7115,7128] [2021-12-17 21:05:39,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 21:05:39,198 INFO L208 MainTranslator]: Completed translation [2021-12-17 21:05:39,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:39 WrapperNode [2021-12-17 21:05:39,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 21:05:39,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 21:05:39,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 21:05:39,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 21:05:39,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:39" (1/1) ... [2021-12-17 21:05:39,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:39" (1/1) ... [2021-12-17 21:05:39,253 INFO L137 Inliner]: procedures = 69, calls = 81, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 808 [2021-12-17 21:05:39,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 21:05:39,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 21:05:39,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 21:05:39,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 21:05:39,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:39" (1/1) ... [2021-12-17 21:05:39,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:39" (1/1) ... [2021-12-17 21:05:39,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:39" (1/1) ... [2021-12-17 21:05:39,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:39" (1/1) ... [2021-12-17 21:05:39,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:39" (1/1) ... [2021-12-17 21:05:39,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:39" (1/1) ... [2021-12-17 21:05:39,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:39" (1/1) ... [2021-12-17 21:05:39,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 21:05:39,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 21:05:39,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 21:05:39,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 21:05:39,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:39" (1/1) ... [2021-12-17 21:05:39,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 21:05:39,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 21:05:39,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 21:05:39,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 21:05:39,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 21:05:39,350 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 21:05:39,350 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 21:05:39,350 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-12-17 21:05:39,350 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-12-17 21:05:39,350 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-17 21:05:39,350 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-17 21:05:39,351 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-17 21:05:39,351 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-17 21:05:39,351 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-12-17 21:05:39,351 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-12-17 21:05:39,351 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-17 21:05:39,351 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-17 21:05:39,351 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-17 21:05:39,352 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-17 21:05:39,352 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-12-17 21:05:39,352 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-12-17 21:05:39,352 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-12-17 21:05:39,352 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-12-17 21:05:39,352 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-12-17 21:05:39,352 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-12-17 21:05:39,352 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-17 21:05:39,353 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-17 21:05:39,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 21:05:39,353 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-17 21:05:39,353 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-17 21:05:39,353 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-12-17 21:05:39,353 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-12-17 21:05:39,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 21:05:39,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 21:05:39,354 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-17 21:05:39,354 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-17 21:05:39,431 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 21:05:39,439 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 21:05:40,017 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 21:05:40,027 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 21:05:40,027 INFO L301 CfgBuilder]: Removed 15 assume(true) statements. [2021-12-17 21:05:40,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:05:40 BoogieIcfgContainer [2021-12-17 21:05:40,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 21:05:40,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 21:05:40,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 21:05:40,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 21:05:40,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 09:05:38" (1/3) ... [2021-12-17 21:05:40,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46abcf62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 09:05:40, skipping insertion in model container [2021-12-17 21:05:40,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:39" (2/3) ... [2021-12-17 21:05:40,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46abcf62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 09:05:40, skipping insertion in model container [2021-12-17 21:05:40,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:05:40" (3/3) ... [2021-12-17 21:05:40,035 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.08.cil-1.c [2021-12-17 21:05:40,039 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 21:05:40,039 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 21:05:40,070 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 21:05:40,076 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 21:05:40,077 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 21:05:40,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 383 states, 330 states have (on average 1.621212121212121) internal successors, (535), 336 states have internal predecessors, (535), 36 states have call successors, (36), 14 states have call predecessors, (36), 14 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2021-12-17 21:05:40,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:05:40,106 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:40,107 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] [2021-12-17 21:05:40,107 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:40,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:40,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1589538386, now seen corresponding path program 1 times [2021-12-17 21:05:40,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:40,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995011699] [2021-12-17 21:05:40,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:40,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:40,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:40,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:40,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:40,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:40,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:40,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:40,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:40,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:40,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:40,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995011699] [2021-12-17 21:05:40,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995011699] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:40,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:40,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 21:05:40,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847313992] [2021-12-17 21:05:40,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:40,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 21:05:40,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:40,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 21:05:40,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-17 21:05:40,476 INFO L87 Difference]: Start difference. First operand has 383 states, 330 states have (on average 1.621212121212121) internal successors, (535), 336 states have internal predecessors, (535), 36 states have call successors, (36), 14 states have call predecessors, (36), 14 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-17 21:05:41,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:41,288 INFO L93 Difference]: Finished difference Result 877 states and 1380 transitions. [2021-12-17 21:05:41,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:05:41,290 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2021-12-17 21:05:41,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:41,300 INFO L225 Difference]: With dead ends: 877 [2021-12-17 21:05:41,301 INFO L226 Difference]: Without dead ends: 508 [2021-12-17 21:05:41,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-12-17 21:05:41,307 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 1232 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:41,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1237 Valid, 1692 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 21:05:41,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-12-17 21:05:41,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 469. [2021-12-17 21:05:41,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 398 states have (on average 1.5025125628140703) internal successors, (598), 404 states have internal predecessors, (598), 47 states have call successors, (47), 21 states have call predecessors, (47), 22 states have return successors, (50), 46 states have call predecessors, (50), 45 states have call successors, (50) [2021-12-17 21:05:41,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 695 transitions. [2021-12-17 21:05:41,363 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 695 transitions. Word has length 65 [2021-12-17 21:05:41,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:41,364 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 695 transitions. [2021-12-17 21:05:41,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-17 21:05:41,364 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 695 transitions. [2021-12-17 21:05:41,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:05:41,367 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:41,368 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] [2021-12-17 21:05:41,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 21:05:41,368 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:41,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:41,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1026540270, now seen corresponding path program 1 times [2021-12-17 21:05:41,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:41,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122289096] [2021-12-17 21:05:41,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:41,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:41,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:41,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:41,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:41,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:41,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:41,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:41,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:41,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:41,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:41,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122289096] [2021-12-17 21:05:41,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122289096] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:41,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:41,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 21:05:41,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547175752] [2021-12-17 21:05:41,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:41,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 21:05:41,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:41,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 21:05:41,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 21:05:41,471 INFO L87 Difference]: Start difference. First operand 469 states and 695 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-17 21:05:42,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:42,269 INFO L93 Difference]: Finished difference Result 816 states and 1172 transitions. [2021-12-17 21:05:42,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 21:05:42,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2021-12-17 21:05:42,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:42,277 INFO L225 Difference]: With dead ends: 816 [2021-12-17 21:05:42,277 INFO L226 Difference]: Without dead ends: 639 [2021-12-17 21:05:42,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-12-17 21:05:42,282 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 1115 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 2204 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:42,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 2204 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 21:05:42,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-12-17 21:05:42,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 565. [2021-12-17 21:05:42,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 474 states have (on average 1.481012658227848) internal successors, (702), 482 states have internal predecessors, (702), 58 states have call successors, (58), 28 states have call predecessors, (58), 31 states have return successors, (69), 58 states have call predecessors, (69), 56 states have call successors, (69) [2021-12-17 21:05:42,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 829 transitions. [2021-12-17 21:05:42,342 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 829 transitions. Word has length 65 [2021-12-17 21:05:42,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:42,343 INFO L470 AbstractCegarLoop]: Abstraction has 565 states and 829 transitions. [2021-12-17 21:05:42,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-17 21:05:42,343 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 829 transitions. [2021-12-17 21:05:42,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:05:42,352 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:42,352 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] [2021-12-17 21:05:42,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 21:05:42,353 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:42,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:42,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1239840916, now seen corresponding path program 1 times [2021-12-17 21:05:42,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:42,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890059201] [2021-12-17 21:05:42,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:42,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:42,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:42,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:42,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:42,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:42,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:42,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:42,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:42,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:42,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890059201] [2021-12-17 21:05:42,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890059201] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:42,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:42,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 21:05:42,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085558168] [2021-12-17 21:05:42,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:42,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 21:05:42,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:42,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 21:05:42,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-17 21:05:42,473 INFO L87 Difference]: Start difference. First operand 565 states and 829 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 21:05:43,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:43,137 INFO L93 Difference]: Finished difference Result 866 states and 1243 transitions. [2021-12-17 21:05:43,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 21:05:43,138 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2021-12-17 21:05:43,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:43,141 INFO L225 Difference]: With dead ends: 866 [2021-12-17 21:05:43,141 INFO L226 Difference]: Without dead ends: 599 [2021-12-17 21:05:43,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 21:05:43,142 INFO L933 BasicCegarLoop]: 551 mSDtfsCounter, 728 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:43,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 2353 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 21:05:43,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-12-17 21:05:43,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 570. [2021-12-17 21:05:43,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 478 states have (on average 1.4728033472803348) internal successors, (704), 486 states have internal predecessors, (704), 58 states have call successors, (58), 28 states have call predecessors, (58), 32 states have return successors, (70), 59 states have call predecessors, (70), 56 states have call successors, (70) [2021-12-17 21:05:43,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 832 transitions. [2021-12-17 21:05:43,162 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 832 transitions. Word has length 65 [2021-12-17 21:05:43,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:43,162 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 832 transitions. [2021-12-17 21:05:43,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 21:05:43,163 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 832 transitions. [2021-12-17 21:05:43,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:05:43,164 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:43,164 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] [2021-12-17 21:05:43,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 21:05:43,165 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:43,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:43,165 INFO L85 PathProgramCache]: Analyzing trace with hash 210481618, now seen corresponding path program 1 times [2021-12-17 21:05:43,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:43,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585052745] [2021-12-17 21:05:43,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:43,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:43,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:43,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:43,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:43,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:43,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:43,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:43,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:43,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:43,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:43,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585052745] [2021-12-17 21:05:43,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585052745] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:43,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:43,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 21:05:43,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590893213] [2021-12-17 21:05:43,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:43,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 21:05:43,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:43,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 21:05:43,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 21:05:43,252 INFO L87 Difference]: Start difference. First operand 570 states and 832 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-17 21:05:44,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:44,579 INFO L93 Difference]: Finished difference Result 1892 states and 2628 transitions. [2021-12-17 21:05:44,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-17 21:05:44,579 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2021-12-17 21:05:44,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:44,585 INFO L225 Difference]: With dead ends: 1892 [2021-12-17 21:05:44,585 INFO L226 Difference]: Without dead ends: 1602 [2021-12-17 21:05:44,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2021-12-17 21:05:44,587 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 3249 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 667 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3263 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 2104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 667 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:44,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3263 Valid, 2147 Invalid, 2104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [667 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 21:05:44,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2021-12-17 21:05:44,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1471. [2021-12-17 21:05:44,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1193 states have (on average 1.3772003352891868) internal successors, (1643), 1216 states have internal predecessors, (1643), 146 states have call successors, (146), 111 states have call predecessors, (146), 130 states have return successors, (184), 146 states have call predecessors, (184), 144 states have call successors, (184) [2021-12-17 21:05:44,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 1973 transitions. [2021-12-17 21:05:44,637 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 1973 transitions. Word has length 65 [2021-12-17 21:05:44,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:44,637 INFO L470 AbstractCegarLoop]: Abstraction has 1471 states and 1973 transitions. [2021-12-17 21:05:44,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-17 21:05:44,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 1973 transitions. [2021-12-17 21:05:44,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:05:44,639 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:44,639 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] [2021-12-17 21:05:44,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 21:05:44,639 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:44,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:44,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1261930707, now seen corresponding path program 1 times [2021-12-17 21:05:44,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:44,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454689104] [2021-12-17 21:05:44,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:44,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:44,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:44,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:44,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:44,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:44,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:44,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:44,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:44,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:44,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:44,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454689104] [2021-12-17 21:05:44,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454689104] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:44,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:44,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 21:05:44,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44229155] [2021-12-17 21:05:44,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:44,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 21:05:44,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:44,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 21:05:44,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-17 21:05:44,728 INFO L87 Difference]: Start difference. First operand 1471 states and 1973 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 21:05:45,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:45,419 INFO L93 Difference]: Finished difference Result 2762 states and 3646 transitions. [2021-12-17 21:05:45,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 21:05:45,420 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2021-12-17 21:05:45,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:45,425 INFO L225 Difference]: With dead ends: 2762 [2021-12-17 21:05:45,425 INFO L226 Difference]: Without dead ends: 1577 [2021-12-17 21:05:45,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-17 21:05:45,428 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 490 mSDsluCounter, 2039 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 2585 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:45,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 2585 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 21:05:45,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2021-12-17 21:05:45,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1501. [2021-12-17 21:05:45,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1501 states, 1217 states have (on average 1.3631881676253081) internal successors, (1659), 1240 states have internal predecessors, (1659), 146 states have call successors, (146), 111 states have call predecessors, (146), 136 states have return successors, (190), 152 states have call predecessors, (190), 144 states have call successors, (190) [2021-12-17 21:05:45,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 1995 transitions. [2021-12-17 21:05:45,474 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 1995 transitions. Word has length 65 [2021-12-17 21:05:45,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:45,475 INFO L470 AbstractCegarLoop]: Abstraction has 1501 states and 1995 transitions. [2021-12-17 21:05:45,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 21:05:45,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 1995 transitions. [2021-12-17 21:05:45,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:05:45,476 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:45,476 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] [2021-12-17 21:05:45,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 21:05:45,476 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:45,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:45,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1646833195, now seen corresponding path program 1 times [2021-12-17 21:05:45,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:45,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124369430] [2021-12-17 21:05:45,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:45,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:45,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:45,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:45,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:45,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:45,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:45,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:45,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:45,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:45,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:45,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124369430] [2021-12-17 21:05:45,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124369430] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:45,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:45,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 21:05:45,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067114702] [2021-12-17 21:05:45,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:45,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 21:05:45,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:45,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 21:05:45,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 21:05:45,571 INFO L87 Difference]: Start difference. First operand 1501 states and 1995 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-17 21:05:46,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:46,288 INFO L93 Difference]: Finished difference Result 2756 states and 3542 transitions. [2021-12-17 21:05:46,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 21:05:46,289 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2021-12-17 21:05:46,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:46,295 INFO L225 Difference]: With dead ends: 2756 [2021-12-17 21:05:46,295 INFO L226 Difference]: Without dead ends: 1764 [2021-12-17 21:05:46,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-12-17 21:05:46,299 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 1113 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:46,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1138 Valid, 1919 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 21:05:46,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2021-12-17 21:05:46,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1443. [2021-12-17 21:05:46,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1175 states have (on average 1.36) internal successors, (1598), 1193 states have internal predecessors, (1598), 140 states have call successors, (140), 106 states have call predecessors, (140), 126 states have return successors, (175), 145 states have call predecessors, (175), 138 states have call successors, (175) [2021-12-17 21:05:46,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1913 transitions. [2021-12-17 21:05:46,365 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1913 transitions. Word has length 65 [2021-12-17 21:05:46,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:46,367 INFO L470 AbstractCegarLoop]: Abstraction has 1443 states and 1913 transitions. [2021-12-17 21:05:46,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-17 21:05:46,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1913 transitions. [2021-12-17 21:05:46,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:05:46,368 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:46,368 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] [2021-12-17 21:05:46,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 21:05:46,368 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:46,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:46,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1780846701, now seen corresponding path program 1 times [2021-12-17 21:05:46,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:46,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015045730] [2021-12-17 21:05:46,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:46,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:46,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:46,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:46,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:46,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:46,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:46,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:46,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:46,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:46,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:46,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015045730] [2021-12-17 21:05:46,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015045730] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:46,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:46,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:46,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012001445] [2021-12-17 21:05:46,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:46,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:46,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:46,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:46,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:46,431 INFO L87 Difference]: Start difference. First operand 1443 states and 1913 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-17 21:05:46,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:46,794 INFO L93 Difference]: Finished difference Result 3782 states and 4874 transitions. [2021-12-17 21:05:46,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 21:05:46,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2021-12-17 21:05:46,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:46,804 INFO L225 Difference]: With dead ends: 3782 [2021-12-17 21:05:46,804 INFO L226 Difference]: Without dead ends: 2626 [2021-12-17 21:05:46,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-17 21:05:46,809 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 1357 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:46,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1386 Valid, 1335 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 21:05:46,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2021-12-17 21:05:46,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2506. [2021-12-17 21:05:46,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2506 states, 1995 states have (on average 1.2982456140350878) internal successors, (2590), 2030 states have internal predecessors, (2590), 259 states have call successors, (259), 205 states have call predecessors, (259), 250 states have return successors, (366), 273 states have call predecessors, (366), 257 states have call successors, (366) [2021-12-17 21:05:46,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 3215 transitions. [2021-12-17 21:05:46,901 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 3215 transitions. Word has length 65 [2021-12-17 21:05:46,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:46,901 INFO L470 AbstractCegarLoop]: Abstraction has 2506 states and 3215 transitions. [2021-12-17 21:05:46,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-17 21:05:46,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 3215 transitions. [2021-12-17 21:05:46,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 21:05:46,902 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:46,902 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] [2021-12-17 21:05:46,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 21:05:46,903 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:46,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:46,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1311152709, now seen corresponding path program 1 times [2021-12-17 21:05:46,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:46,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625432490] [2021-12-17 21:05:46,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:46,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:46,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:46,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:46,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:46,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:46,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:46,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:46,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:46,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:46,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625432490] [2021-12-17 21:05:46,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625432490] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:46,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:46,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 21:05:46,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708445682] [2021-12-17 21:05:46,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:46,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 21:05:46,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:46,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 21:05:46,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 21:05:46,985 INFO L87 Difference]: Start difference. First operand 2506 states and 3215 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 21:05:47,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:47,488 INFO L93 Difference]: Finished difference Result 5822 states and 7360 transitions. [2021-12-17 21:05:47,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 21:05:47,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2021-12-17 21:05:47,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:47,502 INFO L225 Difference]: With dead ends: 5822 [2021-12-17 21:05:47,503 INFO L226 Difference]: Without dead ends: 3608 [2021-12-17 21:05:47,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-17 21:05:47,509 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 666 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:47,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 1597 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 21:05:47,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3608 states. [2021-12-17 21:05:47,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3608 to 3340. [2021-12-17 21:05:47,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3340 states, 2643 states have (on average 1.2807415815361332) internal successors, (3385), 2683 states have internal predecessors, (3385), 351 states have call successors, (351), 285 states have call predecessors, (351), 344 states have return successors, (480), 374 states have call predecessors, (480), 349 states have call successors, (480) [2021-12-17 21:05:47,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3340 states to 3340 states and 4216 transitions. [2021-12-17 21:05:47,629 INFO L78 Accepts]: Start accepts. Automaton has 3340 states and 4216 transitions. Word has length 66 [2021-12-17 21:05:47,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:47,629 INFO L470 AbstractCegarLoop]: Abstraction has 3340 states and 4216 transitions. [2021-12-17 21:05:47,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 21:05:47,630 INFO L276 IsEmpty]: Start isEmpty. Operand 3340 states and 4216 transitions. [2021-12-17 21:05:47,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-17 21:05:47,631 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:47,631 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] [2021-12-17 21:05:47,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 21:05:47,631 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:47,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:47,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1685992636, now seen corresponding path program 1 times [2021-12-17 21:05:47,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:47,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506484052] [2021-12-17 21:05:47,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:47,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:47,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:47,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:47,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:47,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:47,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:47,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:47,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:47,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:47,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:47,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506484052] [2021-12-17 21:05:47,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506484052] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:47,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:47,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 21:05:47,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264344489] [2021-12-17 21:05:47,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:47,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 21:05:47,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:47,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 21:05:47,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 21:05:47,686 INFO L87 Difference]: Start difference. First operand 3340 states and 4216 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 21:05:47,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:47,969 INFO L93 Difference]: Finished difference Result 7212 states and 8990 transitions. [2021-12-17 21:05:47,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 21:05:47,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2021-12-17 21:05:47,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:48,007 INFO L225 Difference]: With dead ends: 7212 [2021-12-17 21:05:48,007 INFO L226 Difference]: Without dead ends: 4162 [2021-12-17 21:05:48,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-17 21:05:48,014 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1322 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:48,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1352 Valid, 1147 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 21:05:48,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4162 states. [2021-12-17 21:05:48,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4162 to 3894. [2021-12-17 21:05:48,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3894 states, 3083 states have (on average 1.2731106065520597) internal successors, (3925), 3127 states have internal predecessors, (3925), 407 states have call successors, (407), 335 states have call predecessors, (407), 402 states have return successors, (553), 434 states have call predecessors, (553), 405 states have call successors, (553) [2021-12-17 21:05:48,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3894 states to 3894 states and 4885 transitions. [2021-12-17 21:05:48,121 INFO L78 Accepts]: Start accepts. Automaton has 3894 states and 4885 transitions. Word has length 72 [2021-12-17 21:05:48,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:48,122 INFO L470 AbstractCegarLoop]: Abstraction has 3894 states and 4885 transitions. [2021-12-17 21:05:48,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 21:05:48,122 INFO L276 IsEmpty]: Start isEmpty. Operand 3894 states and 4885 transitions. [2021-12-17 21:05:48,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-17 21:05:48,123 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:48,123 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:05:48,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 21:05:48,123 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:48,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:48,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1242800463, now seen corresponding path program 1 times [2021-12-17 21:05:48,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:48,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654868952] [2021-12-17 21:05:48,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:48,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:48,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:48,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:48,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:48,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:48,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:48,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:48,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:48,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:48,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:48,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654868952] [2021-12-17 21:05:48,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654868952] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:48,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:48,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:48,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571456754] [2021-12-17 21:05:48,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:48,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:48,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:48,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:48,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:48,178 INFO L87 Difference]: Start difference. First operand 3894 states and 4885 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-17 21:05:48,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:48,624 INFO L93 Difference]: Finished difference Result 4980 states and 6180 transitions. [2021-12-17 21:05:48,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 21:05:48,625 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2021-12-17 21:05:48,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:48,641 INFO L225 Difference]: With dead ends: 4980 [2021-12-17 21:05:48,642 INFO L226 Difference]: Without dead ends: 4977 [2021-12-17 21:05:48,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-12-17 21:05:48,645 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 1861 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1871 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:48,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1871 Valid, 1117 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 21:05:48,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4977 states. [2021-12-17 21:05:48,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4977 to 4356. [2021-12-17 21:05:48,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4356 states, 3438 states have (on average 1.262652705061082) internal successors, (4341), 3485 states have internal predecessors, (4341), 457 states have call successors, (457), 379 states have call predecessors, (457), 459 states have return successors, (630), 494 states have call predecessors, (630), 456 states have call successors, (630) [2021-12-17 21:05:48,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4356 states to 4356 states and 5428 transitions. [2021-12-17 21:05:48,799 INFO L78 Accepts]: Start accepts. Automaton has 4356 states and 5428 transitions. Word has length 73 [2021-12-17 21:05:48,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:48,799 INFO L470 AbstractCegarLoop]: Abstraction has 4356 states and 5428 transitions. [2021-12-17 21:05:48,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-17 21:05:48,799 INFO L276 IsEmpty]: Start isEmpty. Operand 4356 states and 5428 transitions. [2021-12-17 21:05:48,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-17 21:05:48,800 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:48,800 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:05:48,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 21:05:48,801 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:48,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:48,801 INFO L85 PathProgramCache]: Analyzing trace with hash 126751022, now seen corresponding path program 1 times [2021-12-17 21:05:48,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:48,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981219994] [2021-12-17 21:05:48,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:48,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:48,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:48,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:48,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:48,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:48,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:48,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:48,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:48,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:48,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:48,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981219994] [2021-12-17 21:05:48,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981219994] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 21:05:48,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374215016] [2021-12-17 21:05:48,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:48,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 21:05:48,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 21:05:48,898 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 21:05:48,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 21:05:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:48,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-17 21:05:48,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 21:05:49,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:49,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 21:05:49,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:49,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374215016] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 21:05:49,547 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 21:05:49,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2021-12-17 21:05:49,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62878685] [2021-12-17 21:05:49,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 21:05:49,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 21:05:49,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:49,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 21:05:49,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-17 21:05:49,548 INFO L87 Difference]: Start difference. First operand 4356 states and 5428 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-17 21:05:50,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:50,812 INFO L93 Difference]: Finished difference Result 8674 states and 10637 transitions. [2021-12-17 21:05:50,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-17 21:05:50,812 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2021-12-17 21:05:50,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:50,838 INFO L225 Difference]: With dead ends: 8674 [2021-12-17 21:05:50,839 INFO L226 Difference]: Without dead ends: 8671 [2021-12-17 21:05:50,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2021-12-17 21:05:50,843 INFO L933 BasicCegarLoop]: 721 mSDtfsCounter, 1649 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 2364 SdHoareTripleChecker+Invalid, 1718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:50,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1709 Valid, 2364 Invalid, 1718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 21:05:50,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8671 states. [2021-12-17 21:05:51,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8671 to 7773. [2021-12-17 21:05:51,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7773 states, 6113 states have (on average 1.2471781449370194) internal successors, (7624), 6195 states have internal predecessors, (7624), 816 states have call successors, (816), 693 states have call predecessors, (816), 842 states have return successors, (1131), 887 states have call predecessors, (1131), 815 states have call successors, (1131) [2021-12-17 21:05:51,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7773 states to 7773 states and 9571 transitions. [2021-12-17 21:05:51,130 INFO L78 Accepts]: Start accepts. Automaton has 7773 states and 9571 transitions. Word has length 74 [2021-12-17 21:05:51,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:51,130 INFO L470 AbstractCegarLoop]: Abstraction has 7773 states and 9571 transitions. [2021-12-17 21:05:51,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-17 21:05:51,130 INFO L276 IsEmpty]: Start isEmpty. Operand 7773 states and 9571 transitions. [2021-12-17 21:05:51,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-17 21:05:51,132 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:51,132 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:05:51,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 21:05:51,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-17 21:05:51,346 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:51,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:51,346 INFO L85 PathProgramCache]: Analyzing trace with hash -567160719, now seen corresponding path program 2 times [2021-12-17 21:05:51,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:51,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374544965] [2021-12-17 21:05:51,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:51,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:51,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:51,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:51,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:51,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:51,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:51,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:51,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:51,394 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:51,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:51,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374544965] [2021-12-17 21:05:51,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374544965] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:51,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:51,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 21:05:51,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579439471] [2021-12-17 21:05:51,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:51,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 21:05:51,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:51,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 21:05:51,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 21:05:51,402 INFO L87 Difference]: Start difference. First operand 7773 states and 9571 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-17 21:05:51,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:51,832 INFO L93 Difference]: Finished difference Result 10367 states and 12780 transitions. [2021-12-17 21:05:51,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 21:05:51,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2021-12-17 21:05:51,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:51,851 INFO L225 Difference]: With dead ends: 10367 [2021-12-17 21:05:51,851 INFO L226 Difference]: Without dead ends: 4193 [2021-12-17 21:05:51,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-17 21:05:51,862 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 988 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:51,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 1469 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 21:05:51,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4193 states. [2021-12-17 21:05:51,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4193 to 3185. [2021-12-17 21:05:51,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3185 states, 2531 states have (on average 1.2544448834452786) internal successors, (3175), 2559 states have internal predecessors, (3175), 335 states have call successors, (335), 275 states have call predecessors, (335), 317 states have return successors, (430), 353 states have call predecessors, (430), 334 states have call successors, (430) [2021-12-17 21:05:51,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 3940 transitions. [2021-12-17 21:05:51,992 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 3940 transitions. Word has length 77 [2021-12-17 21:05:51,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:51,992 INFO L470 AbstractCegarLoop]: Abstraction has 3185 states and 3940 transitions. [2021-12-17 21:05:51,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-17 21:05:51,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 3940 transitions. [2021-12-17 21:05:51,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-17 21:05:51,995 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:51,995 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:05:51,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 21:05:51,995 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:51,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:51,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1983760768, now seen corresponding path program 1 times [2021-12-17 21:05:51,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:51,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85647142] [2021-12-17 21:05:51,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:51,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:52,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:52,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:52,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:52,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:52,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:52,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:52,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:52,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-17 21:05:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:52,064 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 21:05:52,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:52,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85647142] [2021-12-17 21:05:52,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85647142] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:52,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:52,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 21:05:52,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806724950] [2021-12-17 21:05:52,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:52,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 21:05:52,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:52,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 21:05:52,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-17 21:05:52,066 INFO L87 Difference]: Start difference. First operand 3185 states and 3940 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-17 21:05:52,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:52,962 INFO L93 Difference]: Finished difference Result 8969 states and 10937 transitions. [2021-12-17 21:05:52,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 21:05:52,962 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2021-12-17 21:05:52,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:52,974 INFO L225 Difference]: With dead ends: 8969 [2021-12-17 21:05:52,974 INFO L226 Difference]: Without dead ends: 5271 [2021-12-17 21:05:52,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-12-17 21:05:52,981 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 1570 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:52,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1582 Valid, 1705 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 21:05:52,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5271 states. [2021-12-17 21:05:53,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5271 to 5011. [2021-12-17 21:05:53,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5011 states, 3922 states have (on average 1.2200407955124937) internal successors, (4785), 3987 states have internal predecessors, (4785), 535 states have call successors, (535), 447 states have call predecessors, (535), 552 states have return successors, (780), 579 states have call predecessors, (780), 534 states have call successors, (780) [2021-12-17 21:05:53,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5011 states to 5011 states and 6100 transitions. [2021-12-17 21:05:53,165 INFO L78 Accepts]: Start accepts. Automaton has 5011 states and 6100 transitions. Word has length 84 [2021-12-17 21:05:53,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:53,165 INFO L470 AbstractCegarLoop]: Abstraction has 5011 states and 6100 transitions. [2021-12-17 21:05:53,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-17 21:05:53,166 INFO L276 IsEmpty]: Start isEmpty. Operand 5011 states and 6100 transitions. [2021-12-17 21:05:53,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-17 21:05:53,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:53,168 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:05:53,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 21:05:53,168 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:53,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:53,168 INFO L85 PathProgramCache]: Analyzing trace with hash -215482833, now seen corresponding path program 1 times [2021-12-17 21:05:53,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:53,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210226218] [2021-12-17 21:05:53,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:53,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:53,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:53,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:53,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:53,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:53,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:53,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:53,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:53,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 21:05:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:53,231 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 21:05:53,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:53,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210226218] [2021-12-17 21:05:53,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210226218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:53,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:53,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 21:05:53,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44448045] [2021-12-17 21:05:53,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:53,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 21:05:53,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:53,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 21:05:53,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-17 21:05:53,234 INFO L87 Difference]: Start difference. First operand 5011 states and 6100 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-17 21:05:54,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:54,229 INFO L93 Difference]: Finished difference Result 8371 states and 10118 transitions. [2021-12-17 21:05:54,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 21:05:54,230 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2021-12-17 21:05:54,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:54,241 INFO L225 Difference]: With dead ends: 8371 [2021-12-17 21:05:54,241 INFO L226 Difference]: Without dead ends: 4172 [2021-12-17 21:05:54,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2021-12-17 21:05:54,250 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 1955 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1990 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:54,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1990 Valid, 1713 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 21:05:54,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-12-17 21:05:54,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 3751. [2021-12-17 21:05:54,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3751 states, 2928 states have (on average 1.2086748633879782) internal successors, (3539), 2981 states have internal predecessors, (3539), 400 states have call successors, (400), 329 states have call predecessors, (400), 421 states have return successors, (549), 443 states have call predecessors, (549), 399 states have call successors, (549) [2021-12-17 21:05:54,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 4488 transitions. [2021-12-17 21:05:54,389 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 4488 transitions. Word has length 93 [2021-12-17 21:05:54,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:54,389 INFO L470 AbstractCegarLoop]: Abstraction has 3751 states and 4488 transitions. [2021-12-17 21:05:54,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-17 21:05:54,390 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 4488 transitions. [2021-12-17 21:05:54,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-17 21:05:54,393 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:54,393 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:05:54,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 21:05:54,394 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:54,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:54,395 INFO L85 PathProgramCache]: Analyzing trace with hash 2019952060, now seen corresponding path program 1 times [2021-12-17 21:05:54,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:54,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226485877] [2021-12-17 21:05:54,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:54,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:54,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:54,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:54,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:54,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:54,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:54,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:54,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:54,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-17 21:05:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:54,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 21:05:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:54,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 21:05:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:54,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 21:05:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:54,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:54,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:54,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 21:05:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:54,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-17 21:05:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:54,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-17 21:05:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:54,497 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-17 21:05:54,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:54,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226485877] [2021-12-17 21:05:54,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226485877] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 21:05:54,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7346250] [2021-12-17 21:05:54,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:54,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 21:05:54,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 21:05:54,499 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 21:05:54,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 21:05:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:54,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-17 21:05:54,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 21:05:54,788 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-17 21:05:54,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 21:05:54,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7346250] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:54,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 21:05:54,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2021-12-17 21:05:54,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984108594] [2021-12-17 21:05:54,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:54,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 21:05:54,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:54,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 21:05:54,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 21:05:54,792 INFO L87 Difference]: Start difference. First operand 3751 states and 4488 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 21:05:54,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:54,876 INFO L93 Difference]: Finished difference Result 5626 states and 6727 transitions. [2021-12-17 21:05:54,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 21:05:54,876 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2021-12-17 21:05:54,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:54,882 INFO L225 Difference]: With dead ends: 5626 [2021-12-17 21:05:54,882 INFO L226 Difference]: Without dead ends: 2167 [2021-12-17 21:05:54,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-12-17 21:05:54,887 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 34 mSDsluCounter, 2203 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:54,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 2763 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 21:05:54,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2021-12-17 21:05:54,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 2045. [2021-12-17 21:05:54,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2045 states, 1668 states have (on average 1.2284172661870503) internal successors, (2049), 1684 states have internal predecessors, (2049), 189 states have call successors, (189), 143 states have call predecessors, (189), 186 states have return successors, (256), 218 states have call predecessors, (256), 188 states have call successors, (256) [2021-12-17 21:05:54,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2045 states to 2045 states and 2494 transitions. [2021-12-17 21:05:54,954 INFO L78 Accepts]: Start accepts. Automaton has 2045 states and 2494 transitions. Word has length 145 [2021-12-17 21:05:54,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:54,955 INFO L470 AbstractCegarLoop]: Abstraction has 2045 states and 2494 transitions. [2021-12-17 21:05:54,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 21:05:54,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2045 states and 2494 transitions. [2021-12-17 21:05:54,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 21:05:54,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:54,957 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] [2021-12-17 21:05:54,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 21:05:55,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-17 21:05:55,172 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:55,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:55,172 INFO L85 PathProgramCache]: Analyzing trace with hash 814047811, now seen corresponding path program 1 times [2021-12-17 21:05:55,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:55,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074230334] [2021-12-17 21:05:55,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:55,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:55,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:55,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 21:05:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:55,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:55,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 21:05:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:55,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 21:05:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:55,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:55,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:55,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074230334] [2021-12-17 21:05:55,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074230334] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:55,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:55,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 21:05:55,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380156931] [2021-12-17 21:05:55,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:55,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 21:05:55,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:55,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 21:05:55,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 21:05:55,238 INFO L87 Difference]: Start difference. First operand 2045 states and 2494 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:05:56,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:56,100 INFO L93 Difference]: Finished difference Result 2409 states and 3076 transitions. [2021-12-17 21:05:56,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 21:05:56,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-17 21:05:56,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:56,105 INFO L225 Difference]: With dead ends: 2409 [2021-12-17 21:05:56,105 INFO L226 Difference]: Without dead ends: 2143 [2021-12-17 21:05:56,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-17 21:05:56,106 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 827 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:56,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [847 Valid, 1082 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 21:05:56,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2021-12-17 21:05:56,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2045. [2021-12-17 21:05:56,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2045 states, 1668 states have (on average 1.2278177458033572) internal successors, (2048), 1684 states have internal predecessors, (2048), 189 states have call successors, (189), 143 states have call predecessors, (189), 186 states have return successors, (256), 218 states have call predecessors, (256), 188 states have call successors, (256) [2021-12-17 21:05:56,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2045 states to 2045 states and 2493 transitions. [2021-12-17 21:05:56,187 INFO L78 Accepts]: Start accepts. Automaton has 2045 states and 2493 transitions. Word has length 134 [2021-12-17 21:05:56,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:56,187 INFO L470 AbstractCegarLoop]: Abstraction has 2045 states and 2493 transitions. [2021-12-17 21:05:56,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:05:56,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2045 states and 2493 transitions. [2021-12-17 21:05:56,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 21:05:56,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:56,189 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] [2021-12-17 21:05:56,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 21:05:56,190 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:56,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:56,190 INFO L85 PathProgramCache]: Analyzing trace with hash 326000705, now seen corresponding path program 1 times [2021-12-17 21:05:56,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:56,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525306128] [2021-12-17 21:05:56,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:56,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:56,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:56,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 21:05:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:56,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:56,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 21:05:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:56,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 21:05:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:56,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:56,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:56,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525306128] [2021-12-17 21:05:56,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525306128] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:56,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:56,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 21:05:56,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185783433] [2021-12-17 21:05:56,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:56,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 21:05:56,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:56,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 21:05:56,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 21:05:56,260 INFO L87 Difference]: Start difference. First operand 2045 states and 2493 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:05:57,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:57,858 INFO L93 Difference]: Finished difference Result 2773 states and 3660 transitions. [2021-12-17 21:05:57,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 21:05:57,876 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-17 21:05:57,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:57,881 INFO L225 Difference]: With dead ends: 2773 [2021-12-17 21:05:57,881 INFO L226 Difference]: Without dead ends: 2512 [2021-12-17 21:05:57,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-17 21:05:57,882 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 1309 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 1523 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 1657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:57,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1334 Valid, 1632 Invalid, 1657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1523 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 21:05:57,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2512 states. [2021-12-17 21:05:57,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2512 to 2317. [2021-12-17 21:05:57,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2317 states, 1916 states have (on average 1.2734864300626305) internal successors, (2440), 1933 states have internal predecessors, (2440), 206 states have call successors, (206), 149 states have call predecessors, (206), 193 states have return successors, (276), 235 states have call predecessors, (276), 205 states have call successors, (276) [2021-12-17 21:05:57,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 2922 transitions. [2021-12-17 21:05:57,973 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 2922 transitions. Word has length 134 [2021-12-17 21:05:57,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:57,973 INFO L470 AbstractCegarLoop]: Abstraction has 2317 states and 2922 transitions. [2021-12-17 21:05:57,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:05:57,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 2922 transitions. [2021-12-17 21:05:57,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 21:05:57,976 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:57,976 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] [2021-12-17 21:05:57,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 21:05:57,976 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:57,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:57,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1380502843, now seen corresponding path program 1 times [2021-12-17 21:05:57,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:57,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823162560] [2021-12-17 21:05:57,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:57,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:57,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:58,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 21:05:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:58,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:58,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 21:05:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:58,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 21:05:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:58,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:58,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:58,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823162560] [2021-12-17 21:05:58,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823162560] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:58,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:58,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:58,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397703425] [2021-12-17 21:05:58,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:58,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:58,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:58,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:58,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:58,081 INFO L87 Difference]: Start difference. First operand 2317 states and 2922 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:00,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:06:00,189 INFO L93 Difference]: Finished difference Result 3426 states and 4698 transitions. [2021-12-17 21:06:00,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:06:00,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-17 21:06:00,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:06:00,201 INFO L225 Difference]: With dead ends: 3426 [2021-12-17 21:06:00,201 INFO L226 Difference]: Without dead ends: 2893 [2021-12-17 21:06:00,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 21:06:00,204 INFO L933 BasicCegarLoop]: 838 mSDtfsCounter, 1322 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 2353 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 2465 SdHoareTripleChecker+Invalid, 2454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-17 21:06:00,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1347 Valid, 2465 Invalid, 2454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2353 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-17 21:06:00,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2021-12-17 21:06:00,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 2570. [2021-12-17 21:06:00,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2570 states, 2145 states have (on average 1.3025641025641026) internal successors, (2794), 2163 states have internal predecessors, (2794), 223 states have call successors, (223), 155 states have call predecessors, (223), 200 states have return successors, (295), 253 states have call predecessors, (295), 222 states have call successors, (295) [2021-12-17 21:06:00,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2570 states to 2570 states and 3312 transitions. [2021-12-17 21:06:00,322 INFO L78 Accepts]: Start accepts. Automaton has 2570 states and 3312 transitions. Word has length 134 [2021-12-17 21:06:00,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:06:00,323 INFO L470 AbstractCegarLoop]: Abstraction has 2570 states and 3312 transitions. [2021-12-17 21:06:00,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:00,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2570 states and 3312 transitions. [2021-12-17 21:06:00,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 21:06:00,325 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:06:00,325 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] [2021-12-17 21:06:00,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 21:06:00,325 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:06:00,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:06:00,326 INFO L85 PathProgramCache]: Analyzing trace with hash 621383427, now seen corresponding path program 1 times [2021-12-17 21:06:00,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:06:00,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697897013] [2021-12-17 21:06:00,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:06:00,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:06:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:00,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:06:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:00,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 21:06:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:00,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:06:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:00,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 21:06:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:00,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 21:06:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:00,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:06:00,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:06:00,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697897013] [2021-12-17 21:06:00,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697897013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:06:00,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:06:00,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:06:00,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187047629] [2021-12-17 21:06:00,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:06:00,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:06:00,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:06:00,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:06:00,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:06:00,434 INFO L87 Difference]: Start difference. First operand 2570 states and 3312 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:02,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:06:02,431 INFO L93 Difference]: Finished difference Result 4388 states and 6216 transitions. [2021-12-17 21:06:02,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:06:02,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-17 21:06:02,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:06:02,439 INFO L225 Difference]: With dead ends: 4388 [2021-12-17 21:06:02,439 INFO L226 Difference]: Without dead ends: 3602 [2021-12-17 21:06:02,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 21:06:02,443 INFO L933 BasicCegarLoop]: 828 mSDtfsCounter, 1322 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 2356 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 2463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 21:06:02,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1347 Valid, 2451 Invalid, 2463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2356 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 21:06:02,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3602 states. [2021-12-17 21:06:02,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3602 to 3077. [2021-12-17 21:06:02,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3077 states, 2604 states have (on average 1.3452380952380953) internal successors, (3503), 2624 states have internal predecessors, (3503), 257 states have call successors, (257), 167 states have call predecessors, (257), 214 states have return successors, (337), 289 states have call predecessors, (337), 256 states have call successors, (337) [2021-12-17 21:06:02,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 4097 transitions. [2021-12-17 21:06:02,565 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 4097 transitions. Word has length 134 [2021-12-17 21:06:02,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:06:02,565 INFO L470 AbstractCegarLoop]: Abstraction has 3077 states and 4097 transitions. [2021-12-17 21:06:02,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:02,566 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 4097 transitions. [2021-12-17 21:06:02,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 21:06:02,568 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:06:02,568 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] [2021-12-17 21:06:02,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 21:06:02,568 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:06:02,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:06:02,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1946438907, now seen corresponding path program 1 times [2021-12-17 21:06:02,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:06:02,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109050674] [2021-12-17 21:06:02,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:06:02,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:06:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:02,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:06:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:02,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 21:06:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:02,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:06:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:02,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 21:06:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:02,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 21:06:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:02,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:06:02,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:06:02,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109050674] [2021-12-17 21:06:02,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109050674] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:06:02,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:06:02,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:06:02,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893412061] [2021-12-17 21:06:02,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:06:02,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:06:02,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:06:02,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:06:02,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:06:02,649 INFO L87 Difference]: Start difference. First operand 3077 states and 4097 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:04,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:06:04,665 INFO L93 Difference]: Finished difference Result 6236 states and 9117 transitions. [2021-12-17 21:06:04,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:06:04,666 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-17 21:06:04,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:06:04,677 INFO L225 Difference]: With dead ends: 6236 [2021-12-17 21:06:04,677 INFO L226 Difference]: Without dead ends: 4943 [2021-12-17 21:06:04,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 21:06:04,682 INFO L933 BasicCegarLoop]: 820 mSDtfsCounter, 1317 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 2336 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 2443 SdHoareTripleChecker+Invalid, 2444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 21:06:04,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1342 Valid, 2443 Invalid, 2444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2336 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 21:06:04,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4943 states. [2021-12-17 21:06:04,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4943 to 4097. [2021-12-17 21:06:04,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4097 states, 3528 states have (on average 1.3976757369614512) internal successors, (4931), 3552 states have internal predecessors, (4931), 325 states have call successors, (325), 191 states have call predecessors, (325), 242 states have return successors, (427), 361 states have call predecessors, (427), 324 states have call successors, (427) [2021-12-17 21:06:04,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4097 states to 4097 states and 5683 transitions. [2021-12-17 21:06:04,864 INFO L78 Accepts]: Start accepts. Automaton has 4097 states and 5683 transitions. Word has length 134 [2021-12-17 21:06:04,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:06:04,864 INFO L470 AbstractCegarLoop]: Abstraction has 4097 states and 5683 transitions. [2021-12-17 21:06:04,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:04,865 INFO L276 IsEmpty]: Start isEmpty. Operand 4097 states and 5683 transitions. [2021-12-17 21:06:04,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 21:06:04,868 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:06:04,868 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] [2021-12-17 21:06:04,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 21:06:04,868 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:06:04,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:06:04,869 INFO L85 PathProgramCache]: Analyzing trace with hash 701165447, now seen corresponding path program 1 times [2021-12-17 21:06:04,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:06:04,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254809053] [2021-12-17 21:06:04,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:06:04,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:06:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:04,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:06:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:04,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 21:06:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:04,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:06:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:04,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 21:06:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:04,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 21:06:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:04,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:06:04,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:06:04,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254809053] [2021-12-17 21:06:04,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254809053] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:06:04,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:06:04,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:06:04,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897557876] [2021-12-17 21:06:04,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:06:04,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:06:04,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:06:04,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:06:04,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:06:04,954 INFO L87 Difference]: Start difference. First operand 4097 states and 5683 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:07,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:06:07,036 INFO L93 Difference]: Finished difference Result 9942 states and 14953 transitions. [2021-12-17 21:06:07,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:06:07,037 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-17 21:06:07,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:06:07,056 INFO L225 Difference]: With dead ends: 9942 [2021-12-17 21:06:07,056 INFO L226 Difference]: Without dead ends: 7629 [2021-12-17 21:06:07,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 21:06:07,062 INFO L933 BasicCegarLoop]: 815 mSDtfsCounter, 1316 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 2328 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 2438 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 21:06:07,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1341 Valid, 2438 Invalid, 2436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2328 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 21:06:07,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7629 states. [2021-12-17 21:06:07,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7629 to 6142. [2021-12-17 21:06:07,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6142 states, 5381 states have (on average 1.448243820851143) internal successors, (7793), 5413 states have internal predecessors, (7793), 461 states have call successors, (461), 239 states have call predecessors, (461), 298 states have return successors, (625), 505 states have call predecessors, (625), 460 states have call successors, (625) [2021-12-17 21:06:07,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 8879 transitions. [2021-12-17 21:06:07,315 INFO L78 Accepts]: Start accepts. Automaton has 6142 states and 8879 transitions. Word has length 134 [2021-12-17 21:06:07,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:06:07,315 INFO L470 AbstractCegarLoop]: Abstraction has 6142 states and 8879 transitions. [2021-12-17 21:06:07,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:07,315 INFO L276 IsEmpty]: Start isEmpty. Operand 6142 states and 8879 transitions. [2021-12-17 21:06:07,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 21:06:07,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:06:07,320 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] [2021-12-17 21:06:07,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 21:06:07,320 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:06:07,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:06:07,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1430185275, now seen corresponding path program 1 times [2021-12-17 21:06:07,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:06:07,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743362901] [2021-12-17 21:06:07,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:06:07,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:06:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:07,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:06:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:07,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 21:06:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:07,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:06:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:07,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 21:06:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:07,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 21:06:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:07,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:06:07,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:06:07,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743362901] [2021-12-17 21:06:07,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743362901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:06:07,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:06:07,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:06:07,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506753943] [2021-12-17 21:06:07,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:06:07,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:06:07,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:06:07,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:06:07,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:06:07,400 INFO L87 Difference]: Start difference. First operand 6142 states and 8879 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:09,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:06:09,558 INFO L93 Difference]: Finished difference Result 17353 states and 26683 transitions. [2021-12-17 21:06:09,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:06:09,558 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-17 21:06:09,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:06:09,593 INFO L225 Difference]: With dead ends: 17353 [2021-12-17 21:06:09,593 INFO L226 Difference]: Without dead ends: 12995 [2021-12-17 21:06:09,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 21:06:09,606 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 1388 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 2225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 21:06:09,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1413 Valid, 1806 Invalid, 2225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 2089 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 21:06:09,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12995 states. [2021-12-17 21:06:10,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12995 to 10247. [2021-12-17 21:06:10,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10247 states, 9102 states have (on average 1.487475280158207) internal successors, (13539), 9150 states have internal predecessors, (13539), 733 states have call successors, (733), 335 states have call predecessors, (733), 410 states have return successors, (1075), 793 states have call predecessors, (1075), 732 states have call successors, (1075) [2021-12-17 21:06:10,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10247 states to 10247 states and 15347 transitions. [2021-12-17 21:06:10,153 INFO L78 Accepts]: Start accepts. Automaton has 10247 states and 15347 transitions. Word has length 134 [2021-12-17 21:06:10,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:06:10,153 INFO L470 AbstractCegarLoop]: Abstraction has 10247 states and 15347 transitions. [2021-12-17 21:06:10,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:10,154 INFO L276 IsEmpty]: Start isEmpty. Operand 10247 states and 15347 transitions. [2021-12-17 21:06:10,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 21:06:10,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:06:10,160 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] [2021-12-17 21:06:10,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 21:06:10,161 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:06:10,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:06:10,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1826197447, now seen corresponding path program 1 times [2021-12-17 21:06:10,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:06:10,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324037393] [2021-12-17 21:06:10,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:06:10,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:06:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:10,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:06:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:10,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 21:06:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:10,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:06:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:10,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 21:06:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:10,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 21:06:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:10,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:06:10,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:06:10,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324037393] [2021-12-17 21:06:10,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324037393] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:06:10,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:06:10,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:06:10,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871707800] [2021-12-17 21:06:10,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:06:10,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:06:10,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:06:10,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:06:10,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:06:10,233 INFO L87 Difference]: Start difference. First operand 10247 states and 15347 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:12,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:06:12,954 INFO L93 Difference]: Finished difference Result 32176 states and 50337 transitions. [2021-12-17 21:06:12,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:06:12,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-17 21:06:12,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:06:13,022 INFO L225 Difference]: With dead ends: 32176 [2021-12-17 21:06:13,022 INFO L226 Difference]: Without dead ends: 23713 [2021-12-17 21:06:13,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 21:06:13,048 INFO L933 BasicCegarLoop]: 805 mSDtfsCounter, 1314 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 2312 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 2420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 21:06:13,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1339 Valid, 2428 Invalid, 2420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2312 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 21:06:13,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23713 states. [2021-12-17 21:06:14,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23713 to 18488. [2021-12-17 21:06:14,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18488 states, 16575 states have (on average 1.5129411764705882) internal successors, (25077), 16655 states have internal predecessors, (25077), 1277 states have call successors, (1277), 527 states have call predecessors, (1277), 634 states have return successors, (2137), 1369 states have call predecessors, (2137), 1276 states have call successors, (2137) [2021-12-17 21:06:14,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18488 states to 18488 states and 28491 transitions. [2021-12-17 21:06:14,100 INFO L78 Accepts]: Start accepts. Automaton has 18488 states and 28491 transitions. Word has length 134 [2021-12-17 21:06:14,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:06:14,100 INFO L470 AbstractCegarLoop]: Abstraction has 18488 states and 28491 transitions. [2021-12-17 21:06:14,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:14,100 INFO L276 IsEmpty]: Start isEmpty. Operand 18488 states and 28491 transitions. [2021-12-17 21:06:14,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 21:06:14,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:06:14,111 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] [2021-12-17 21:06:14,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 21:06:14,112 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:06:14,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:06:14,112 INFO L85 PathProgramCache]: Analyzing trace with hash -146967931, now seen corresponding path program 1 times [2021-12-17 21:06:14,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:06:14,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231132340] [2021-12-17 21:06:14,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:06:14,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:06:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:14,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:06:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:14,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 21:06:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:14,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:06:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:14,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 21:06:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:14,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 21:06:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:14,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:06:14,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:06:14,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231132340] [2021-12-17 21:06:14,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231132340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:06:14,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:06:14,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:06:14,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732124195] [2021-12-17 21:06:14,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:06:14,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:06:14,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:06:14,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:06:14,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:06:14,196 INFO L87 Difference]: Start difference. First operand 18488 states and 28491 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:18,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:06:18,037 INFO L93 Difference]: Finished difference Result 61823 states and 98247 transitions. [2021-12-17 21:06:18,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:06:18,037 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-17 21:06:18,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:06:18,178 INFO L225 Difference]: With dead ends: 61823 [2021-12-17 21:06:18,178 INFO L226 Difference]: Without dead ends: 45119 [2021-12-17 21:06:18,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 21:06:18,226 INFO L933 BasicCegarLoop]: 800 mSDtfsCounter, 1313 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 2304 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 2412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 21:06:18,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1338 Valid, 2423 Invalid, 2412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2304 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 21:06:18,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45119 states. [2021-12-17 21:06:20,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45119 to 35033. [2021-12-17 21:06:20,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35033 states, 31584 states have (on average 1.5275772543059778) internal successors, (48247), 31728 states have internal predecessors, (48247), 2365 states have call successors, (2365), 911 states have call predecessors, (2365), 1082 states have return successors, (4747), 2521 states have call predecessors, (4747), 2364 states have call successors, (4747) [2021-12-17 21:06:20,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35033 states to 35033 states and 55359 transitions. [2021-12-17 21:06:20,361 INFO L78 Accepts]: Start accepts. Automaton has 35033 states and 55359 transitions. Word has length 134 [2021-12-17 21:06:20,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:06:20,361 INFO L470 AbstractCegarLoop]: Abstraction has 35033 states and 55359 transitions. [2021-12-17 21:06:20,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:20,361 INFO L276 IsEmpty]: Start isEmpty. Operand 35033 states and 55359 transitions. [2021-12-17 21:06:20,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 21:06:20,377 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:06:20,377 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] [2021-12-17 21:06:20,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 21:06:20,378 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:06:20,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:06:20,378 INFO L85 PathProgramCache]: Analyzing trace with hash 2006138887, now seen corresponding path program 1 times [2021-12-17 21:06:20,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:06:20,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113009572] [2021-12-17 21:06:20,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:06:20,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:06:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:20,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:06:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:20,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 21:06:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:20,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:06:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:20,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 21:06:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:20,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 21:06:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:06:20,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:06:20,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113009572] [2021-12-17 21:06:20,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113009572] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:06:20,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:06:20,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:06:20,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215613391] [2021-12-17 21:06:20,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:06:20,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:06:20,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:06:20,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:06:20,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:06:20,448 INFO L87 Difference]: Start difference. First operand 35033 states and 55359 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:28,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:06:28,112 INFO L93 Difference]: Finished difference Result 136606 states and 219471 transitions. [2021-12-17 21:06:28,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 21:06:28,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-17 21:06:28,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:06:28,464 INFO L225 Difference]: With dead ends: 136606 [2021-12-17 21:06:28,465 INFO L226 Difference]: Without dead ends: 103357 [2021-12-17 21:06:28,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 21:06:28,706 INFO L933 BasicCegarLoop]: 929 mSDtfsCounter, 1395 mSDsluCounter, 1615 mSDsCounter, 0 mSdLazyCounter, 2685 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 2795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-17 21:06:28,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1419 Valid, 2544 Invalid, 2795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2685 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-17 21:06:28,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103357 states. [2021-12-17 21:06:32,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103357 to 67866. [2021-12-17 21:06:32,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67866 states, 61473 states have (on average 1.5376018739934605) internal successors, (94521), 61745 states have internal predecessors, (94521), 4413 states have call successors, (4413), 1679 states have call predecessors, (4413), 1978 states have return successors, (11297), 4697 states have call predecessors, (11297), 4412 states have call successors, (11297) [2021-12-17 21:06:32,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67866 states to 67866 states and 110231 transitions. [2021-12-17 21:06:32,582 INFO L78 Accepts]: Start accepts. Automaton has 67866 states and 110231 transitions. Word has length 134 [2021-12-17 21:06:32,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:06:32,582 INFO L470 AbstractCegarLoop]: Abstraction has 67866 states and 110231 transitions. [2021-12-17 21:06:32,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:32,582 INFO L276 IsEmpty]: Start isEmpty. Operand 67866 states and 110231 transitions. [2021-12-17 21:06:32,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-17 21:06:32,619 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:06:32,619 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] [2021-12-17 21:06:32,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-17 21:06:32,619 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:06:32,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:06:32,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1382857285, now seen corresponding path program 1 times [2021-12-17 21:06:32,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:06:32,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31829304] [2021-12-17 21:06:32,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:06:32,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:06:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:32,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:06:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:32,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 21:06:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:32,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:06:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:32,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 21:06:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:32,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 21:06:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:32,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:06:32,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:06:32,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31829304] [2021-12-17 21:06:32,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31829304] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:06:32,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:06:32,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:06:32,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812712415] [2021-12-17 21:06:32,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:06:32,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:06:32,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:06:32,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:06:32,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:06:32,706 INFO L87 Difference]: Start difference. First operand 67866 states and 110231 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:46,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:06:46,049 INFO L93 Difference]: Finished difference Result 266461 states and 437605 transitions. [2021-12-17 21:06:46,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 21:06:46,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-17 21:06:46,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:06:46,967 INFO L225 Difference]: With dead ends: 266461 [2021-12-17 21:06:46,968 INFO L226 Difference]: Without dead ends: 200379 [2021-12-17 21:06:47,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 21:06:47,519 INFO L933 BasicCegarLoop]: 785 mSDtfsCounter, 1604 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 2393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-17 21:06:47,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1638 Valid, 2397 Invalid, 2393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-17 21:06:47,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200379 states.