./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_3.cil+token_ring.11.cil-2.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 c8331ae1a542eb033e77244b050255025a53bdff6172fe7667dd71867965088c --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:37:10,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:37:11,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:37:11,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:37:11,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:37:11,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:37:11,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:37:11,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:37:11,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:37:11,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:37:11,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:37:11,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:37:11,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:37:11,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:37:11,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:37:11,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:37:11,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:37:11,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:37:11,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:37:11,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:37:11,057 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:37:11,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:37:11,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:37:11,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:37:11,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:37:11,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:37:11,065 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:37:11,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:37:11,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:37:11,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:37:11,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:37:11,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:37:11,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:37:11,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:37:11,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:37:11,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:37:11,071 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:37:11,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:37:11,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:37:11,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:37:11,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:37:11,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:37:11,074 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:37:11,095 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:37:11,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:37:11,096 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:37:11,096 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:37:11,096 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:37:11,096 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:37:11,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:37:11,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:37:11,097 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:37:11,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:37:11,098 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:37:11,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:37:11,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:37:11,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:37:11,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:37:11,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:37:11,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:37:11,099 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:37:11,099 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:37:11,099 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:37:11,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:37:11,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:37:11,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:37:11,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:37:11,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:37:11,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:37:11,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:37:11,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:37:11,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:37:11,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:37:11,102 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:37:11,102 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:37:11,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:37:11,102 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8331ae1a542eb033e77244b050255025a53bdff6172fe7667dd71867965088c [2022-07-12 09:37:11,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:37:11,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:37:11,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:37:11,294 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:37:11,294 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:37:11,295 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c [2022-07-12 09:37:11,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60fcc7420/4e657509132047d79d9439380aa96fdd/FLAGb31908d69 [2022-07-12 09:37:11,792 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:37:11,793 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.11.cil-2.c [2022-07-12 09:37:11,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60fcc7420/4e657509132047d79d9439380aa96fdd/FLAGb31908d69 [2022-07-12 09:37:11,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60fcc7420/4e657509132047d79d9439380aa96fdd [2022-07-12 09:37:11,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:37:11,823 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:37:11,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:37:11,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:37:11,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:37:11,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:37:11" (1/1) ... [2022-07-12 09:37:11,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51ac052b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:11, skipping insertion in model container [2022-07-12 09:37:11,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:37:11" (1/1) ... [2022-07-12 09:37:11,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:37:11,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:37:11,995 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_3.cil+token_ring.11.cil-2.c[911,924] [2022-07-12 09:37:12,028 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_3.cil+token_ring.11.cil-2.c[8416,8429] [2022-07-12 09:37:12,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:37:12,101 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:37:12,108 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_3.cil+token_ring.11.cil-2.c[911,924] [2022-07-12 09:37:12,120 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_3.cil+token_ring.11.cil-2.c[8416,8429] [2022-07-12 09:37:12,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:37:12,162 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:37:12,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:12 WrapperNode [2022-07-12 09:37:12,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:37:12,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:37:12,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:37:12,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:37:12,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:12" (1/1) ... [2022-07-12 09:37:12,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:12" (1/1) ... [2022-07-12 09:37:12,240 INFO L137 Inliner]: procedures = 77, calls = 94, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 1020 [2022-07-12 09:37:12,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:37:12,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:37:12,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:37:12,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:37:12,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:12" (1/1) ... [2022-07-12 09:37:12,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:12" (1/1) ... [2022-07-12 09:37:12,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:12" (1/1) ... [2022-07-12 09:37:12,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:12" (1/1) ... [2022-07-12 09:37:12,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:12" (1/1) ... [2022-07-12 09:37:12,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:12" (1/1) ... [2022-07-12 09:37:12,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:12" (1/1) ... [2022-07-12 09:37:12,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:37:12,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:37:12,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:37:12,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:37:12,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:12" (1/1) ... [2022-07-12 09:37:12,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:37:12,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:37:12,317 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) [2022-07-12 09:37:12,325 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 [2022-07-12 09:37:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:37:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 09:37:12,350 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 09:37:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-12 09:37:12,350 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-12 09:37:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-12 09:37:12,350 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-12 09:37:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-12 09:37:12,351 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-12 09:37:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-12 09:37:12,351 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-12 09:37:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-12 09:37:12,351 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-12 09:37:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-12 09:37:12,351 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-12 09:37:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-12 09:37:12,352 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-12 09:37:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-12 09:37:12,352 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-12 09:37:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-12 09:37:12,352 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-12 09:37:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-12 09:37:12,352 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-12 09:37:12,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:37:12,353 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-12 09:37:12,353 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-12 09:37:12,353 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-12 09:37:12,353 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-12 09:37:12,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:37:12,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:37:12,353 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-12 09:37:12,354 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-12 09:37:12,438 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:37:12,439 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:37:13,011 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-12 09:37:13,011 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-07-12 09:37:13,077 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:37:13,091 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:37:13,091 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2022-07-12 09:37:13,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:37:13 BoogieIcfgContainer [2022-07-12 09:37:13,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:37:13,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:37:13,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:37:13,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:37:13,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:37:11" (1/3) ... [2022-07-12 09:37:13,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c97c800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:37:13, skipping insertion in model container [2022-07-12 09:37:13,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:37:12" (2/3) ... [2022-07-12 09:37:13,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c97c800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:37:13, skipping insertion in model container [2022-07-12 09:37:13,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:37:13" (3/3) ... [2022-07-12 09:37:13,102 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.11.cil-2.c [2022-07-12 09:37:13,113 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:37:13,114 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:37:13,171 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:37:13,176 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@187b53a1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7bebb40e [2022-07-12 09:37:13,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:37:13,182 INFO L276 IsEmpty]: Start isEmpty. Operand has 474 states, 416 states have (on average 1.6346153846153846) internal successors, (680), 422 states have internal predecessors, (680), 41 states have call successors, (41), 14 states have call predecessors, (41), 14 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2022-07-12 09:37:13,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:37:13,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:13,202 INFO L195 NwaCegarLoop]: 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] [2022-07-12 09:37:13,202 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:13,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:13,207 INFO L85 PathProgramCache]: Analyzing trace with hash 805759077, now seen corresponding path program 1 times [2022-07-12 09:37:13,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:13,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140884222] [2022-07-12 09:37:13,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:13,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:13,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:13,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:13,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:13,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:13,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:37:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:13,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:37:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:13,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:37:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:13,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:13,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:13,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140884222] [2022-07-12 09:37:13,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140884222] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:13,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:13,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:37:13,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006673872] [2022-07-12 09:37:13,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:13,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:37:13,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:13,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:37:13,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:37:13,549 INFO L87 Difference]: Start difference. First operand has 474 states, 416 states have (on average 1.6346153846153846) internal successors, (680), 422 states have internal predecessors, (680), 41 states have call successors, (41), 14 states have call predecessors, (41), 14 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) 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) [2022-07-12 09:37:14,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:14,435 INFO L93 Difference]: Finished difference Result 1072 states and 1713 transitions. [2022-07-12 09:37:14,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:37:14,438 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 [2022-07-12 09:37:14,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:14,448 INFO L225 Difference]: With dead ends: 1072 [2022-07-12 09:37:14,449 INFO L226 Difference]: Without dead ends: 615 [2022-07-12 09:37:14,453 INFO L412 NwaCegarLoop]: 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 [2022-07-12 09:37:14,455 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 1221 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:14,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1228 Valid, 2411 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:37:14,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-07-12 09:37:14,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 576. [2022-07-12 09:37:14,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 498 states have (on average 1.5240963855421688) internal successors, (759), 504 states have internal predecessors, (759), 54 states have call successors, (54), 21 states have call predecessors, (54), 22 states have return successors, (57), 53 states have call predecessors, (57), 52 states have call successors, (57) [2022-07-12 09:37:14,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 870 transitions. [2022-07-12 09:37:14,526 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 870 transitions. Word has length 65 [2022-07-12 09:37:14,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:14,526 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 870 transitions. [2022-07-12 09:37:14,527 INFO L496 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) [2022-07-12 09:37:14,527 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 870 transitions. [2022-07-12 09:37:14,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:37:14,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:14,530 INFO L195 NwaCegarLoop]: 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] [2022-07-12 09:37:14,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:37:14,530 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:14,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:14,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1810319579, now seen corresponding path program 1 times [2022-07-12 09:37:14,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:14,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916798835] [2022-07-12 09:37:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:14,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:14,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:14,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:14,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:14,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:14,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:37:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:14,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:37:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:14,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:37:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:14,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:14,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:14,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916798835] [2022-07-12 09:37:14,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916798835] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:14,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:14,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:37:14,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489255710] [2022-07-12 09:37:14,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:14,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:37:14,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:14,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:37:14,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:37:14,629 INFO L87 Difference]: Start difference. First operand 576 states and 870 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) [2022-07-12 09:37:15,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:15,686 INFO L93 Difference]: Finished difference Result 973 states and 1436 transitions. [2022-07-12 09:37:15,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 09:37:15,687 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 [2022-07-12 09:37:15,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:15,691 INFO L225 Difference]: With dead ends: 973 [2022-07-12 09:37:15,691 INFO L226 Difference]: Without dead ends: 764 [2022-07-12 09:37:15,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-12 09:37:15,693 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 1392 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 1446 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:15,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1425 Valid, 2761 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1446 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:37:15,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-07-12 09:37:15,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 688. [2022-07-12 09:37:15,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 588 states have (on average 1.5051020408163265) internal successors, (885), 596 states have internal predecessors, (885), 67 states have call successors, (67), 28 states have call predecessors, (67), 31 states have return successors, (78), 67 states have call predecessors, (78), 65 states have call successors, (78) [2022-07-12 09:37:15,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1030 transitions. [2022-07-12 09:37:15,742 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1030 transitions. Word has length 65 [2022-07-12 09:37:15,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:15,742 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 1030 transitions. [2022-07-12 09:37:15,743 INFO L496 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) [2022-07-12 09:37:15,743 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1030 transitions. [2022-07-12 09:37:15,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:37:15,745 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:15,745 INFO L195 NwaCegarLoop]: 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] [2022-07-12 09:37:15,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:37:15,745 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:15,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:15,746 INFO L85 PathProgramCache]: Analyzing trace with hash 456061607, now seen corresponding path program 1 times [2022-07-12 09:37:15,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:15,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249497664] [2022-07-12 09:37:15,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:15,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:15,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:15,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:15,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:15,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:15,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:37:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:15,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:37:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:15,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:37:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:15,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:15,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:15,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249497664] [2022-07-12 09:37:15,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249497664] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:15,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:15,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 09:37:15,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13321411] [2022-07-12 09:37:15,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:15,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:37:15,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:15,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:37:15,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:37:15,832 INFO L87 Difference]: Start difference. First operand 688 states and 1030 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-12 09:37:17,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:17,334 INFO L93 Difference]: Finished difference Result 2234 states and 3228 transitions. [2022-07-12 09:37:17,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 09:37:17,334 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), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-07-12 09:37:17,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:17,341 INFO L225 Difference]: With dead ends: 2234 [2022-07-12 09:37:17,342 INFO L226 Difference]: Without dead ends: 1901 [2022-07-12 09:37:17,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-12 09:37:17,344 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 4105 mSDsluCounter, 1856 mSDsCounter, 0 mSdLazyCounter, 1759 mSolverCounterSat, 749 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4123 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 749 IncrementalHoareTripleChecker+Valid, 1759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:17,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4123 Valid, 2702 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [749 Valid, 1759 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 09:37:17,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1901 states. [2022-07-12 09:37:17,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1901 to 1741. [2022-07-12 09:37:17,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1741 states, 1436 states have (on average 1.4129526462395543) internal successors, (2029), 1459 states have internal predecessors, (2029), 177 states have call successors, (177), 111 states have call predecessors, (177), 126 states have return successors, (211), 173 states have call predecessors, (211), 175 states have call successors, (211) [2022-07-12 09:37:17,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1741 states to 1741 states and 2417 transitions. [2022-07-12 09:37:17,437 INFO L78 Accepts]: Start accepts. Automaton has 1741 states and 2417 transitions. Word has length 65 [2022-07-12 09:37:17,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:17,437 INFO L495 AbstractCegarLoop]: Abstraction has 1741 states and 2417 transitions. [2022-07-12 09:37:17,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-12 09:37:17,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 2417 transitions. [2022-07-12 09:37:17,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:37:17,439 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:17,439 INFO L195 NwaCegarLoop]: 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] [2022-07-12 09:37:17,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:37:17,439 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:17,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:17,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1798849050, now seen corresponding path program 1 times [2022-07-12 09:37:17,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:17,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103342900] [2022-07-12 09:37:17,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:17,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:17,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:17,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:17,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:17,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:17,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:37:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:17,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 09:37:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:17,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:37:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:17,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:17,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:17,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103342900] [2022-07-12 09:37:17,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103342900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:17,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:17,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:37:17,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536017442] [2022-07-12 09:37:17,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:17,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:37:17,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:17,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:37:17,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:37:17,581 INFO L87 Difference]: Start difference. First operand 1741 states and 2417 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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) [2022-07-12 09:37:18,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:18,524 INFO L93 Difference]: Finished difference Result 3269 states and 4496 transitions. [2022-07-12 09:37:18,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:37:18,525 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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 66 [2022-07-12 09:37:18,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:18,531 INFO L225 Difference]: With dead ends: 3269 [2022-07-12 09:37:18,531 INFO L226 Difference]: Without dead ends: 1889 [2022-07-12 09:37:18,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:37:18,534 INFO L413 NwaCegarLoop]: 699 mSDtfsCounter, 932 mSDsluCounter, 2086 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 1732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:18,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 2785 Invalid, 1732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1587 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:37:18,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2022-07-12 09:37:18,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1781. [2022-07-12 09:37:18,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1468 states have (on average 1.3998637602179838) internal successors, (2055), 1491 states have internal predecessors, (2055), 177 states have call successors, (177), 111 states have call predecessors, (177), 134 states have return successors, (219), 181 states have call predecessors, (219), 175 states have call successors, (219) [2022-07-12 09:37:18,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 2451 transitions. [2022-07-12 09:37:18,584 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 2451 transitions. Word has length 66 [2022-07-12 09:37:18,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:18,585 INFO L495 AbstractCegarLoop]: Abstraction has 1781 states and 2451 transitions. [2022-07-12 09:37:18,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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) [2022-07-12 09:37:18,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 2451 transitions. [2022-07-12 09:37:18,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:37:18,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:18,586 INFO L195 NwaCegarLoop]: 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] [2022-07-12 09:37:18,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:37:18,586 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:18,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:18,587 INFO L85 PathProgramCache]: Analyzing trace with hash 769489752, now seen corresponding path program 1 times [2022-07-12 09:37:18,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:18,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925548687] [2022-07-12 09:37:18,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:18,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:18,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:18,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:18,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:18,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:18,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:37:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:18,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 09:37:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:18,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:37:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:18,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:18,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:18,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925548687] [2022-07-12 09:37:18,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925548687] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:18,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:18,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 09:37:18,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137406246] [2022-07-12 09:37:18,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:18,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:37:18,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:18,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:37:18,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:37:18,656 INFO L87 Difference]: Start difference. First operand 1781 states and 2451 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 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) [2022-07-12 09:37:20,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:20,130 INFO L93 Difference]: Finished difference Result 5353 states and 7325 transitions. [2022-07-12 09:37:20,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 09:37:20,130 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 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 66 [2022-07-12 09:37:20,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:20,137 INFO L225 Difference]: With dead ends: 5353 [2022-07-12 09:37:20,137 INFO L226 Difference]: Without dead ends: 2172 [2022-07-12 09:37:20,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-12 09:37:20,143 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 4268 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4286 SdHoareTripleChecker+Valid, 2719 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:20,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4286 Valid, 2719 Invalid, 2436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:37:20,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2022-07-12 09:37:20,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 1992. [2022-07-12 09:37:20,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1992 states, 1607 states have (on average 1.3571873055382702) internal successors, (2181), 1632 states have internal predecessors, (2181), 217 states have call successors, (217), 139 states have call predecessors, (217), 166 states have return successors, (265), 223 states have call predecessors, (265), 215 states have call successors, (265) [2022-07-12 09:37:20,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1992 states to 1992 states and 2663 transitions. [2022-07-12 09:37:20,201 INFO L78 Accepts]: Start accepts. Automaton has 1992 states and 2663 transitions. Word has length 66 [2022-07-12 09:37:20,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:20,201 INFO L495 AbstractCegarLoop]: Abstraction has 1992 states and 2663 transitions. [2022-07-12 09:37:20,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 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) [2022-07-12 09:37:20,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1992 states and 2663 transitions. [2022-07-12 09:37:20,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:37:20,202 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:20,203 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:20,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:37:20,203 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:20,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:20,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1205446518, now seen corresponding path program 1 times [2022-07-12 09:37:20,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:20,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924908459] [2022-07-12 09:37:20,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:20,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:20,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:20,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:20,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:20,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:20,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:37:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:20,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:37:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:20,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:37:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:20,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:37:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 09:37:20,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:20,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924908459] [2022-07-12 09:37:20,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924908459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:20,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:20,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:37:20,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121755047] [2022-07-12 09:37:20,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:20,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:37:20,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:20,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:37:20,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:37:20,302 INFO L87 Difference]: Start difference. First operand 1992 states and 2663 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-07-12 09:37:21,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:21,226 INFO L93 Difference]: Finished difference Result 3817 states and 5065 transitions. [2022-07-12 09:37:21,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:37:21,227 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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 91 [2022-07-12 09:37:21,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:21,235 INFO L225 Difference]: With dead ends: 3817 [2022-07-12 09:37:21,235 INFO L226 Difference]: Without dead ends: 2186 [2022-07-12 09:37:21,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:37:21,239 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 618 mSDsluCounter, 2366 mSDsCounter, 0 mSdLazyCounter, 1624 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 3054 SdHoareTripleChecker+Invalid, 1723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:21,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 3054 Invalid, 1723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1624 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:37:21,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2186 states. [2022-07-12 09:37:21,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2186 to 2052. [2022-07-12 09:37:21,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 1655 states have (on average 1.343202416918429) internal successors, (2223), 1680 states have internal predecessors, (2223), 217 states have call successors, (217), 139 states have call predecessors, (217), 178 states have return successors, (277), 235 states have call predecessors, (277), 215 states have call successors, (277) [2022-07-12 09:37:21,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 2717 transitions. [2022-07-12 09:37:21,303 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 2717 transitions. Word has length 91 [2022-07-12 09:37:21,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:21,304 INFO L495 AbstractCegarLoop]: Abstraction has 2052 states and 2717 transitions. [2022-07-12 09:37:21,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-07-12 09:37:21,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 2717 transitions. [2022-07-12 09:37:21,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:37:21,308 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:21,309 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:21,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 09:37:21,309 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:21,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:21,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1649347192, now seen corresponding path program 1 times [2022-07-12 09:37:21,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:21,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612878297] [2022-07-12 09:37:21,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:21,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:21,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:21,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:21,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:21,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:21,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:37:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:21,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:37:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:21,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:37:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:21,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:37:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:21,386 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 09:37:21,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:21,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612878297] [2022-07-12 09:37:21,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612878297] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:21,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:21,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:37:21,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588909933] [2022-07-12 09:37:21,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:21,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:37:21,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:21,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:37:21,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:37:21,388 INFO L87 Difference]: Start difference. First operand 2052 states and 2717 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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) [2022-07-12 09:37:22,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:22,241 INFO L93 Difference]: Finished difference Result 3579 states and 4681 transitions. [2022-07-12 09:37:22,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 09:37:22,241 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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 91 [2022-07-12 09:37:22,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:22,248 INFO L225 Difference]: With dead ends: 3579 [2022-07-12 09:37:22,248 INFO L226 Difference]: Without dead ends: 2126 [2022-07-12 09:37:22,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-07-12 09:37:22,252 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 1720 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 2120 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:22,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1750 Valid, 2120 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:37:22,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2022-07-12 09:37:22,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 1831. [2022-07-12 09:37:22,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1487 states have (on average 1.3483523873570948) internal successors, (2005), 1507 states have internal predecessors, (2005), 189 states have call successors, (189), 120 states have call predecessors, (189), 153 states have return successors, (237), 205 states have call predecessors, (237), 187 states have call successors, (237) [2022-07-12 09:37:22,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2431 transitions. [2022-07-12 09:37:22,304 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2431 transitions. Word has length 91 [2022-07-12 09:37:22,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:22,305 INFO L495 AbstractCegarLoop]: Abstraction has 1831 states and 2431 transitions. [2022-07-12 09:37:22,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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) [2022-07-12 09:37:22,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2431 transitions. [2022-07-12 09:37:22,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:37:22,306 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:22,306 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:22,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 09:37:22,307 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:22,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:22,307 INFO L85 PathProgramCache]: Analyzing trace with hash -706458058, now seen corresponding path program 1 times [2022-07-12 09:37:22,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:22,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821810619] [2022-07-12 09:37:22,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:22,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:22,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:22,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:22,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:22,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:22,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:37:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:22,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:37:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:22,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:37:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:22,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:37:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:22,368 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 09:37:22,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:22,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821810619] [2022-07-12 09:37:22,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821810619] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:22,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:22,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:22,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331374768] [2022-07-12 09:37:22,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:22,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:22,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:22,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:22,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:22,370 INFO L87 Difference]: Start difference. First operand 1831 states and 2431 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-12 09:37:22,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:22,763 INFO L93 Difference]: Finished difference Result 4983 states and 6543 transitions. [2022-07-12 09:37:22,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:37:22,764 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-07-12 09:37:22,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:22,776 INFO L225 Difference]: With dead ends: 4983 [2022-07-12 09:37:22,776 INFO L226 Difference]: Without dead ends: 3514 [2022-07-12 09:37:22,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-12 09:37:22,780 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 1312 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:22,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 2146 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:37:22,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3514 states. [2022-07-12 09:37:22,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3514 to 3300. [2022-07-12 09:37:22,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 2636 states have (on average 1.302352048558422) internal successors, (3433), 2685 states have internal predecessors, (3433), 350 states have call successors, (350), 233 states have call predecessors, (350), 312 states have return successors, (520), 384 states have call predecessors, (520), 348 states have call successors, (520) [2022-07-12 09:37:22,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 4303 transitions. [2022-07-12 09:37:22,906 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 4303 transitions. Word has length 91 [2022-07-12 09:37:22,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:22,906 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 4303 transitions. [2022-07-12 09:37:22,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-12 09:37:22,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 4303 transitions. [2022-07-12 09:37:22,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:37:22,907 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:22,908 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:22,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 09:37:22,908 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:22,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:22,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1764296136, now seen corresponding path program 1 times [2022-07-12 09:37:22,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:22,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577303846] [2022-07-12 09:37:22,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:22,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:22,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:22,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:22,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:22,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:22,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:37:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:22,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:37:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:22,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:37:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:22,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 09:37:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 09:37:22,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:22,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577303846] [2022-07-12 09:37:22,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577303846] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:22,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:22,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:37:22,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842320720] [2022-07-12 09:37:22,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:22,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:37:22,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:22,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:37:22,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:37:22,949 INFO L87 Difference]: Start difference. First operand 3300 states and 4303 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:37:23,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:23,396 INFO L93 Difference]: Finished difference Result 4884 states and 6287 transitions. [2022-07-12 09:37:23,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 09:37:23,397 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), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-12 09:37:23,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:23,403 INFO L225 Difference]: With dead ends: 4884 [2022-07-12 09:37:23,404 INFO L226 Difference]: Without dead ends: 1946 [2022-07-12 09:37:23,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:23,409 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 1037 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:23,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 1586 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 09:37:23,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1946 states. [2022-07-12 09:37:23,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1946 to 1831. [2022-07-12 09:37:23,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1487 states have (on average 1.3234700739744452) internal successors, (1968), 1507 states have internal predecessors, (1968), 189 states have call successors, (189), 120 states have call predecessors, (189), 153 states have return successors, (237), 205 states have call predecessors, (237), 187 states have call successors, (237) [2022-07-12 09:37:23,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2394 transitions. [2022-07-12 09:37:23,457 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2394 transitions. Word has length 91 [2022-07-12 09:37:23,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:23,457 INFO L495 AbstractCegarLoop]: Abstraction has 1831 states and 2394 transitions. [2022-07-12 09:37:23,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:37:23,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2394 transitions. [2022-07-12 09:37:23,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 09:37:23,458 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:23,458 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:23,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 09:37:23,459 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:23,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:23,459 INFO L85 PathProgramCache]: Analyzing trace with hash -2118566296, now seen corresponding path program 1 times [2022-07-12 09:37:23,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:23,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720690823] [2022-07-12 09:37:23,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:23,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:23,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:23,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:23,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:23,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:23,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:37:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:23,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:37:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:23,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:37:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:23,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 09:37:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:23,550 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:37:23,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:23,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720690823] [2022-07-12 09:37:23,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720690823] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:23,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:23,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:37:23,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424419601] [2022-07-12 09:37:23,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:23,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:37:23,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:23,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:37:23,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:37:23,553 INFO L87 Difference]: Start difference. First operand 1831 states and 2394 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) [2022-07-12 09:37:24,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:24,792 INFO L93 Difference]: Finished difference Result 4249 states and 5477 transitions. [2022-07-12 09:37:24,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 09:37:24,793 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 92 [2022-07-12 09:37:24,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:24,802 INFO L225 Difference]: With dead ends: 4249 [2022-07-12 09:37:24,802 INFO L226 Difference]: Without dead ends: 2629 [2022-07-12 09:37:24,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-12 09:37:24,806 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 2426 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 1446 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2468 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 1926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 1446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:24,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2468 Valid, 2539 Invalid, 1926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 1446 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:37:24,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2629 states. [2022-07-12 09:37:24,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2629 to 2452. [2022-07-12 09:37:24,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 1954 states have (on average 1.284544524053224) internal successors, (2510), 1982 states have internal predecessors, (2510), 266 states have call successors, (266), 168 states have call predecessors, (266), 230 states have return successors, (368), 303 states have call predecessors, (368), 264 states have call successors, (368) [2022-07-12 09:37:24,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 3144 transitions. [2022-07-12 09:37:24,901 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 3144 transitions. Word has length 92 [2022-07-12 09:37:24,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:24,901 INFO L495 AbstractCegarLoop]: Abstraction has 2452 states and 3144 transitions. [2022-07-12 09:37:24,901 INFO L496 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) [2022-07-12 09:37:24,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 3144 transitions. [2022-07-12 09:37:24,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-12 09:37:24,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:24,903 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:24,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 09:37:24,904 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:24,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:24,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2087366859, now seen corresponding path program 1 times [2022-07-12 09:37:24,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:24,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477353797] [2022-07-12 09:37:24,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:24,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:24,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:24,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:37:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:24,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:37:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:24,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:24,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:37:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:24,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:37:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:24,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:37:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:24,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 09:37:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:24,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:37:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:24,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 09:37:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:24,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 09:37:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:24,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:37:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:24,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:37:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:24,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 09:37:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:24,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 09:37:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:24,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:37:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:24,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-12 09:37:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-12 09:37:24,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:24,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477353797] [2022-07-12 09:37:24,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477353797] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:37:24,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176772308] [2022-07-12 09:37:24,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:24,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:37:24,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:37:25,039 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) [2022-07-12 09:37:25,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 09:37:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:25,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:37:25,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:37:25,302 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-12 09:37:25,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:37:25,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176772308] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:25,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:37:25,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-12 09:37:25,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063116234] [2022-07-12 09:37:25,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:25,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:37:25,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:25,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:37:25,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:25,304 INFO L87 Difference]: Start difference. First operand 2452 states and 3144 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 09:37:25,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:25,397 INFO L93 Difference]: Finished difference Result 6378 states and 7973 transitions. [2022-07-12 09:37:25,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:37:25,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 163 [2022-07-12 09:37:25,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:25,410 INFO L225 Difference]: With dead ends: 6378 [2022-07-12 09:37:25,410 INFO L226 Difference]: Without dead ends: 4364 [2022-07-12 09:37:25,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:25,415 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 61 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:25,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1389 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:37:25,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4364 states. [2022-07-12 09:37:25,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4364 to 4322. [2022-07-12 09:37:25,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4322 states, 3411 states have (on average 1.2500732922896511) internal successors, (4264), 3462 states have internal predecessors, (4264), 473 states have call successors, (473), 329 states have call predecessors, (473), 436 states have return successors, (636), 532 states have call predecessors, (636), 471 states have call successors, (636) [2022-07-12 09:37:25,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 5373 transitions. [2022-07-12 09:37:25,562 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 5373 transitions. Word has length 163 [2022-07-12 09:37:25,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:25,562 INFO L495 AbstractCegarLoop]: Abstraction has 4322 states and 5373 transitions. [2022-07-12 09:37:25,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 09:37:25,563 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 5373 transitions. [2022-07-12 09:37:25,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:37:25,564 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:25,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:25,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 09:37:25,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-12 09:37:25,782 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:25,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:25,782 INFO L85 PathProgramCache]: Analyzing trace with hash 812379227, now seen corresponding path program 1 times [2022-07-12 09:37:25,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:25,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836803093] [2022-07-12 09:37:25,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:25,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:25,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:25,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:37:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:25,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:37:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:25,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:37:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:25,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:37:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:25,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:25,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:25,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836803093] [2022-07-12 09:37:25,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836803093] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:25,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:25,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:37:25,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6713137] [2022-07-12 09:37:25,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:25,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:37:25,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:25,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:37:25,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:37:25,880 INFO L87 Difference]: Start difference. First operand 4322 states and 5373 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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) [2022-07-12 09:37:27,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:27,408 INFO L93 Difference]: Finished difference Result 4793 states and 6133 transitions. [2022-07-12 09:37:27,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:37:27,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 167 [2022-07-12 09:37:27,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:27,425 INFO L225 Difference]: With dead ends: 4793 [2022-07-12 09:37:27,425 INFO L226 Difference]: Without dead ends: 4453 [2022-07-12 09:37:27,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:37:27,428 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 1059 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:27,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 1310 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 09:37:27,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4453 states. [2022-07-12 09:37:27,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4453 to 4322. [2022-07-12 09:37:27,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4322 states, 3411 states have (on average 1.2497801231310466) internal successors, (4263), 3462 states have internal predecessors, (4263), 473 states have call successors, (473), 329 states have call predecessors, (473), 436 states have return successors, (636), 532 states have call predecessors, (636), 471 states have call successors, (636) [2022-07-12 09:37:27,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 5372 transitions. [2022-07-12 09:37:27,640 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 5372 transitions. Word has length 167 [2022-07-12 09:37:27,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:27,640 INFO L495 AbstractCegarLoop]: Abstraction has 4322 states and 5372 transitions. [2022-07-12 09:37:27,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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) [2022-07-12 09:37:27,641 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 5372 transitions. [2022-07-12 09:37:27,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:37:27,642 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:27,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:27,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 09:37:27,643 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:27,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:27,643 INFO L85 PathProgramCache]: Analyzing trace with hash -2077396391, now seen corresponding path program 1 times [2022-07-12 09:37:27,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:27,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346736336] [2022-07-12 09:37:27,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:27,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:27,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:27,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:37:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:27,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:37:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:27,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:37:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:27,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:37:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:27,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:27,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:27,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346736336] [2022-07-12 09:37:27,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346736336] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:27,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:27,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:37:27,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879864207] [2022-07-12 09:37:27,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:27,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:37:27,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:27,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:37:27,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:37:27,800 INFO L87 Difference]: Start difference. First operand 4322 states and 5372 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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) [2022-07-12 09:37:30,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:30,381 INFO L93 Difference]: Finished difference Result 5266 states and 6899 transitions. [2022-07-12 09:37:30,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:37:30,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-07-12 09:37:30,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:30,401 INFO L225 Difference]: With dead ends: 5266 [2022-07-12 09:37:30,401 INFO L226 Difference]: Without dead ends: 4933 [2022-07-12 09:37:30,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:30,405 INFO L413 NwaCegarLoop]: 789 mSDtfsCounter, 1676 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:30,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1706 Valid, 1850 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1992 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 09:37:30,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4933 states. [2022-07-12 09:37:30,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4933 to 4672. [2022-07-12 09:37:30,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4672 states, 3734 states have (on average 1.2795929298339581) internal successors, (4778), 3786 states have internal predecessors, (4778), 493 states have call successors, (493), 335 states have call predecessors, (493), 443 states have return successors, (659), 552 states have call predecessors, (659), 491 states have call successors, (659) [2022-07-12 09:37:30,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4672 states to 4672 states and 5930 transitions. [2022-07-12 09:37:30,660 INFO L78 Accepts]: Start accepts. Automaton has 4672 states and 5930 transitions. Word has length 167 [2022-07-12 09:37:30,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:30,660 INFO L495 AbstractCegarLoop]: Abstraction has 4672 states and 5930 transitions. [2022-07-12 09:37:30,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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) [2022-07-12 09:37:30,661 INFO L276 IsEmpty]: Start isEmpty. Operand 4672 states and 5930 transitions. [2022-07-12 09:37:30,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:37:30,662 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:30,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:30,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:37:30,663 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:30,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:30,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1077810211, now seen corresponding path program 1 times [2022-07-12 09:37:30,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:30,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649582847] [2022-07-12 09:37:30,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:30,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:30,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:30,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:37:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:30,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:37:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:30,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:37:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:30,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:37:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:30,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:30,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:30,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649582847] [2022-07-12 09:37:30,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649582847] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:30,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:30,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:30,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941924994] [2022-07-12 09:37:30,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:30,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:30,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:30,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:30,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:30,776 INFO L87 Difference]: Start difference. First operand 4672 states and 5930 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:37:33,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:33,508 INFO L93 Difference]: Finished difference Result 6114 states and 8264 transitions. [2022-07-12 09:37:33,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:37:33,509 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:37:33,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:33,523 INFO L225 Difference]: With dead ends: 6114 [2022-07-12 09:37:33,523 INFO L226 Difference]: Without dead ends: 5431 [2022-07-12 09:37:33,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:37:33,526 INFO L413 NwaCegarLoop]: 1064 mSDtfsCounter, 1707 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 3103 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1737 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 3222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 3103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:33,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1737 Valid, 3048 Invalid, 3222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 3103 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 09:37:33,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5431 states. [2022-07-12 09:37:33,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5431 to 4997. [2022-07-12 09:37:33,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4997 states, 4032 states have (on average 1.3003472222222223) internal successors, (5243), 4085 states have internal predecessors, (5243), 513 states have call successors, (513), 341 states have call predecessors, (513), 450 states have return successors, (681), 573 states have call predecessors, (681), 511 states have call successors, (681) [2022-07-12 09:37:33,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4997 states to 4997 states and 6437 transitions. [2022-07-12 09:37:33,787 INFO L78 Accepts]: Start accepts. Automaton has 4997 states and 6437 transitions. Word has length 167 [2022-07-12 09:37:33,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:33,787 INFO L495 AbstractCegarLoop]: Abstraction has 4997 states and 6437 transitions. [2022-07-12 09:37:33,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:37:33,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4997 states and 6437 transitions. [2022-07-12 09:37:33,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:37:33,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:33,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:33,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 09:37:33,790 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:33,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:33,790 INFO L85 PathProgramCache]: Analyzing trace with hash -739522661, now seen corresponding path program 1 times [2022-07-12 09:37:33,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:33,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78972178] [2022-07-12 09:37:33,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:33,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:37:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:37:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:37:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:37:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:33,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:33,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:33,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78972178] [2022-07-12 09:37:33,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78972178] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:33,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:33,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:33,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622661166] [2022-07-12 09:37:33,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:33,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:33,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:33,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:33,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:33,917 INFO L87 Difference]: Start difference. First operand 4997 states and 6437 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:37:35,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:35,332 INFO L93 Difference]: Finished difference Result 6455 states and 8809 transitions. [2022-07-12 09:37:35,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:37:35,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:37:35,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:35,343 INFO L225 Difference]: With dead ends: 6455 [2022-07-12 09:37:35,344 INFO L226 Difference]: Without dead ends: 5447 [2022-07-12 09:37:35,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:35,347 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 1484 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:35,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1593 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1357 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:37:35,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5447 states. [2022-07-12 09:37:35,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5447 to 4997. [2022-07-12 09:37:35,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4997 states, 4032 states have (on average 1.2996031746031746) internal successors, (5240), 4085 states have internal predecessors, (5240), 513 states have call successors, (513), 341 states have call predecessors, (513), 450 states have return successors, (681), 573 states have call predecessors, (681), 511 states have call successors, (681) [2022-07-12 09:37:35,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4997 states to 4997 states and 6434 transitions. [2022-07-12 09:37:35,634 INFO L78 Accepts]: Start accepts. Automaton has 4997 states and 6434 transitions. Word has length 167 [2022-07-12 09:37:35,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:35,634 INFO L495 AbstractCegarLoop]: Abstraction has 4997 states and 6434 transitions. [2022-07-12 09:37:35,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:37:35,635 INFO L276 IsEmpty]: Start isEmpty. Operand 4997 states and 6434 transitions. [2022-07-12 09:37:35,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:37:35,637 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:35,637 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:35,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 09:37:35,637 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:35,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:35,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1279952167, now seen corresponding path program 1 times [2022-07-12 09:37:35,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:35,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966128489] [2022-07-12 09:37:35,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:35,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:35,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:35,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:37:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:35,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:37:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:35,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:37:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:35,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:37:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:35,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:35,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:35,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966128489] [2022-07-12 09:37:35,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966128489] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:35,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:35,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:35,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071847498] [2022-07-12 09:37:35,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:35,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:35,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:35,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:35,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:35,762 INFO L87 Difference]: Start difference. First operand 4997 states and 6434 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:37:37,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:37,434 INFO L93 Difference]: Finished difference Result 6451 states and 8792 transitions. [2022-07-12 09:37:37,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:37:37,435 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:37:37,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:37,446 INFO L225 Difference]: With dead ends: 6451 [2022-07-12 09:37:37,446 INFO L226 Difference]: Without dead ends: 5443 [2022-07-12 09:37:37,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:37,449 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 1273 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1304 SdHoareTripleChecker+Valid, 1830 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:37,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1304 Valid, 1830 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 09:37:37,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5443 states. [2022-07-12 09:37:37,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5443 to 4997. [2022-07-12 09:37:37,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4997 states, 4032 states have (on average 1.298859126984127) internal successors, (5237), 4085 states have internal predecessors, (5237), 513 states have call successors, (513), 341 states have call predecessors, (513), 450 states have return successors, (681), 573 states have call predecessors, (681), 511 states have call successors, (681) [2022-07-12 09:37:37,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4997 states to 4997 states and 6431 transitions. [2022-07-12 09:37:37,680 INFO L78 Accepts]: Start accepts. Automaton has 4997 states and 6431 transitions. Word has length 167 [2022-07-12 09:37:37,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:37,680 INFO L495 AbstractCegarLoop]: Abstraction has 4997 states and 6431 transitions. [2022-07-12 09:37:37,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:37:37,681 INFO L276 IsEmpty]: Start isEmpty. Operand 4997 states and 6431 transitions. [2022-07-12 09:37:37,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:37:37,682 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:37,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:37,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 09:37:37,683 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:37,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:37,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1435932709, now seen corresponding path program 1 times [2022-07-12 09:37:37,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:37,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424464326] [2022-07-12 09:37:37,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:37,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:37,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:37,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:37:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:37,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:37:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:37,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:37:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:37,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:37:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:37,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:37,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:37,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424464326] [2022-07-12 09:37:37,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424464326] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:37,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:37,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:37,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599559137] [2022-07-12 09:37:37,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:37,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:37,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:37,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:37,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:37,813 INFO L87 Difference]: Start difference. First operand 4997 states and 6431 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:37:40,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:40,871 INFO L93 Difference]: Finished difference Result 7355 states and 10215 transitions. [2022-07-12 09:37:40,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:37:40,871 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:37:40,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:40,885 INFO L225 Difference]: With dead ends: 7355 [2022-07-12 09:37:40,885 INFO L226 Difference]: Without dead ends: 6347 [2022-07-12 09:37:40,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:37:40,888 INFO L413 NwaCegarLoop]: 1042 mSDtfsCounter, 1686 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 3059 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 3026 SdHoareTripleChecker+Invalid, 3179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 3059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:40,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1716 Valid, 3026 Invalid, 3179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 3059 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 09:37:40,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6347 states. [2022-07-12 09:37:41,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6347 to 5657. [2022-07-12 09:37:41,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5657 states, 4638 states have (on average 1.3320396722725312) internal successors, (6178), 4693 states have internal predecessors, (6178), 553 states have call successors, (553), 353 states have call predecessors, (553), 464 states have return successors, (729), 615 states have call predecessors, (729), 551 states have call successors, (729) [2022-07-12 09:37:41,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5657 states to 5657 states and 7460 transitions. [2022-07-12 09:37:41,240 INFO L78 Accepts]: Start accepts. Automaton has 5657 states and 7460 transitions. Word has length 167 [2022-07-12 09:37:41,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:41,240 INFO L495 AbstractCegarLoop]: Abstraction has 5657 states and 7460 transitions. [2022-07-12 09:37:41,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:37:41,241 INFO L276 IsEmpty]: Start isEmpty. Operand 5657 states and 7460 transitions. [2022-07-12 09:37:41,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:37:41,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:41,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:41,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 09:37:41,244 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:41,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:41,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1025322343, now seen corresponding path program 1 times [2022-07-12 09:37:41,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:41,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540045711] [2022-07-12 09:37:41,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:41,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:41,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:41,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:37:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:41,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:37:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:41,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:37:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:41,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:37:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:41,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:41,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:41,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540045711] [2022-07-12 09:37:41,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540045711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:41,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:41,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:41,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717070310] [2022-07-12 09:37:41,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:41,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:41,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:41,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:41,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:41,358 INFO L87 Difference]: Start difference. First operand 5657 states and 7460 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:37:43,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:43,110 INFO L93 Difference]: Finished difference Result 8003 states and 11233 transitions. [2022-07-12 09:37:43,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:37:43,110 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:37:43,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:43,123 INFO L225 Difference]: With dead ends: 8003 [2022-07-12 09:37:43,124 INFO L226 Difference]: Without dead ends: 6335 [2022-07-12 09:37:43,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:43,130 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 1272 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:43,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1303 Valid, 1823 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 09:37:43,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6335 states. [2022-07-12 09:37:43,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6335 to 5657. [2022-07-12 09:37:43,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5657 states, 4638 states have (on average 1.3309616213885296) internal successors, (6173), 4693 states have internal predecessors, (6173), 553 states have call successors, (553), 353 states have call predecessors, (553), 464 states have return successors, (729), 615 states have call predecessors, (729), 551 states have call successors, (729) [2022-07-12 09:37:43,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5657 states to 5657 states and 7455 transitions. [2022-07-12 09:37:43,413 INFO L78 Accepts]: Start accepts. Automaton has 5657 states and 7455 transitions. Word has length 167 [2022-07-12 09:37:43,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:43,413 INFO L495 AbstractCegarLoop]: Abstraction has 5657 states and 7455 transitions. [2022-07-12 09:37:43,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:37:43,414 INFO L276 IsEmpty]: Start isEmpty. Operand 5657 states and 7455 transitions. [2022-07-12 09:37:43,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:37:43,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:43,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:43,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 09:37:43,416 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:43,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:43,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1481775131, now seen corresponding path program 1 times [2022-07-12 09:37:43,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:43,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559845523] [2022-07-12 09:37:43,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:43,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:43,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:43,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:37:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:43,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:37:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:43,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:37:43,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:43,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:37:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:43,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:43,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:43,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559845523] [2022-07-12 09:37:43,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559845523] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:43,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:43,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:43,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217869774] [2022-07-12 09:37:43,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:43,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:43,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:43,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:43,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:43,547 INFO L87 Difference]: Start difference. First operand 5657 states and 7455 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:37:46,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:46,147 INFO L93 Difference]: Finished difference Result 9759 states and 13980 transitions. [2022-07-12 09:37:46,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:37:46,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:37:46,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:46,186 INFO L225 Difference]: With dead ends: 9759 [2022-07-12 09:37:46,186 INFO L226 Difference]: Without dead ends: 8091 [2022-07-12 09:37:46,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:37:46,190 INFO L413 NwaCegarLoop]: 1031 mSDtfsCounter, 1678 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 3032 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1708 SdHoareTripleChecker+Valid, 3015 SdHoareTripleChecker+Invalid, 3152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 3032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:46,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1708 Valid, 3015 Invalid, 3152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 3032 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 09:37:46,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8091 states. [2022-07-12 09:37:46,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8091 to 6979. [2022-07-12 09:37:46,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6979 states, 5852 states have (on average 1.3754272043745728) internal successors, (8049), 5911 states have internal predecessors, (8049), 633 states have call successors, (633), 377 states have call predecessors, (633), 492 states have return successors, (831), 699 states have call predecessors, (831), 631 states have call successors, (831) [2022-07-12 09:37:46,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 9513 transitions. [2022-07-12 09:37:46,729 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 9513 transitions. Word has length 167 [2022-07-12 09:37:46,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:46,730 INFO L495 AbstractCegarLoop]: Abstraction has 6979 states and 9513 transitions. [2022-07-12 09:37:46,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:37:46,730 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 9513 transitions. [2022-07-12 09:37:46,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:37:46,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:46,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:46,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 09:37:46,733 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:46,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:46,734 INFO L85 PathProgramCache]: Analyzing trace with hash -654108071, now seen corresponding path program 1 times [2022-07-12 09:37:46,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:46,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326402232] [2022-07-12 09:37:46,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:46,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:46,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:46,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:37:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:46,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:37:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:46,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:37:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:46,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:37:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:46,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:46,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:46,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326402232] [2022-07-12 09:37:46,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326402232] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:46,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:46,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:46,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430693798] [2022-07-12 09:37:46,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:46,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:46,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:46,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:46,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:46,838 INFO L87 Difference]: Start difference. First operand 6979 states and 9513 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:37:48,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:48,749 INFO L93 Difference]: Finished difference Result 11099 states and 16100 transitions. [2022-07-12 09:37:48,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:37:48,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:37:48,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:48,767 INFO L225 Difference]: With dead ends: 11099 [2022-07-12 09:37:48,767 INFO L226 Difference]: Without dead ends: 8109 [2022-07-12 09:37:48,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:48,774 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 1271 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:48,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 1816 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1479 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 09:37:48,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8109 states. [2022-07-12 09:37:49,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8109 to 6979. [2022-07-12 09:37:49,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6979 states, 5852 states have (on average 1.3738892686261108) internal successors, (8040), 5911 states have internal predecessors, (8040), 633 states have call successors, (633), 377 states have call predecessors, (633), 492 states have return successors, (831), 699 states have call predecessors, (831), 631 states have call successors, (831) [2022-07-12 09:37:49,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 9504 transitions. [2022-07-12 09:37:49,150 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 9504 transitions. Word has length 167 [2022-07-12 09:37:49,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:49,150 INFO L495 AbstractCegarLoop]: Abstraction has 6979 states and 9504 transitions. [2022-07-12 09:37:49,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:37:49,151 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 9504 transitions. [2022-07-12 09:37:49,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:37:49,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:49,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:49,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 09:37:49,153 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:49,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:49,154 INFO L85 PathProgramCache]: Analyzing trace with hash -584460197, now seen corresponding path program 1 times [2022-07-12 09:37:49,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:49,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677443892] [2022-07-12 09:37:49,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:49,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:49,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:49,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:37:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:49,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:37:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:49,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:37:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:49,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:37:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:49,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:49,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:49,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677443892] [2022-07-12 09:37:49,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677443892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:49,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:49,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:49,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359418784] [2022-07-12 09:37:49,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:49,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:49,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:49,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:49,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:49,262 INFO L87 Difference]: Start difference. First operand 6979 states and 9504 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:37:52,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:52,476 INFO L93 Difference]: Finished difference Result 14565 states and 21504 transitions. [2022-07-12 09:37:52,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:37:52,477 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:37:52,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:52,498 INFO L225 Difference]: With dead ends: 14565 [2022-07-12 09:37:52,498 INFO L226 Difference]: Without dead ends: 11575 [2022-07-12 09:37:52,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:37:52,506 INFO L413 NwaCegarLoop]: 1018 mSDtfsCounter, 1673 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 3002 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 3002 SdHoareTripleChecker+Invalid, 3125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 3002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:52,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1703 Valid, 3002 Invalid, 3125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 3002 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 09:37:52,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11575 states. [2022-07-12 09:37:53,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11575 to 9637. [2022-07-12 09:37:53,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9637 states, 8294 states have (on average 1.422715215818664) internal successors, (11800), 8361 states have internal predecessors, (11800), 793 states have call successors, (793), 425 states have call predecessors, (793), 548 states have return successors, (1053), 867 states have call predecessors, (1053), 791 states have call successors, (1053) [2022-07-12 09:37:53,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9637 states to 9637 states and 13646 transitions. [2022-07-12 09:37:53,154 INFO L78 Accepts]: Start accepts. Automaton has 9637 states and 13646 transitions. Word has length 167 [2022-07-12 09:37:53,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:53,154 INFO L495 AbstractCegarLoop]: Abstraction has 9637 states and 13646 transitions. [2022-07-12 09:37:53,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:37:53,155 INFO L276 IsEmpty]: Start isEmpty. Operand 9637 states and 13646 transitions. [2022-07-12 09:37:53,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:37:53,159 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:53,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:53,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 09:37:53,159 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:53,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:53,160 INFO L85 PathProgramCache]: Analyzing trace with hash -166571495, now seen corresponding path program 1 times [2022-07-12 09:37:53,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:53,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101595870] [2022-07-12 09:37:53,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:53,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:53,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:53,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:37:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:53,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:37:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:53,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:37:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:53,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:37:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:53,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:53,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:53,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101595870] [2022-07-12 09:37:53,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101595870] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:53,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:53,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:53,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083083348] [2022-07-12 09:37:53,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:53,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:53,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:53,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:53,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:53,263 INFO L87 Difference]: Start difference. First operand 9637 states and 13646 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:37:55,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:55,535 INFO L93 Difference]: Finished difference Result 17273 states and 25815 transitions. [2022-07-12 09:37:55,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:37:55,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:37:55,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:55,559 INFO L225 Difference]: With dead ends: 17273 [2022-07-12 09:37:55,560 INFO L226 Difference]: Without dead ends: 11625 [2022-07-12 09:37:55,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:55,574 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 1480 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:55,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1564 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 09:37:55,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11625 states. [2022-07-12 09:37:56,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11625 to 9637. [2022-07-12 09:37:56,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9637 states, 8294 states have (on average 1.4206655413551965) internal successors, (11783), 8361 states have internal predecessors, (11783), 793 states have call successors, (793), 425 states have call predecessors, (793), 548 states have return successors, (1053), 867 states have call predecessors, (1053), 791 states have call successors, (1053) [2022-07-12 09:37:56,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9637 states to 9637 states and 13629 transitions. [2022-07-12 09:37:56,429 INFO L78 Accepts]: Start accepts. Automaton has 9637 states and 13629 transitions. Word has length 167 [2022-07-12 09:37:56,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:56,443 INFO L495 AbstractCegarLoop]: Abstraction has 9637 states and 13629 transitions. [2022-07-12 09:37:56,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:37:56,444 INFO L276 IsEmpty]: Start isEmpty. Operand 9637 states and 13629 transitions. [2022-07-12 09:37:56,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:37:56,463 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:56,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:56,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 09:37:56,463 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:56,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:56,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1784011945, now seen corresponding path program 1 times [2022-07-12 09:37:56,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:56,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301805762] [2022-07-12 09:37:56,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:56,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:56,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:56,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:37:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:56,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:37:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:56,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:37:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:56,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:37:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:56,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:56,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:56,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301805762] [2022-07-12 09:37:56,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301805762] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:56,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:56,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:56,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923198727] [2022-07-12 09:37:56,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:56,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:56,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:56,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:56,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:56,626 INFO L87 Difference]: Start difference. First operand 9637 states and 13629 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:37:58,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:58,771 INFO L93 Difference]: Finished difference Result 17255 states and 25728 transitions. [2022-07-12 09:37:58,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:37:58,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:37:58,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:58,793 INFO L225 Difference]: With dead ends: 17255 [2022-07-12 09:37:58,794 INFO L226 Difference]: Without dead ends: 11607 [2022-07-12 09:37:58,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:58,806 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 1267 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1298 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:58,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1298 Valid, 1799 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 09:37:58,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11607 states. [2022-07-12 09:37:59,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11607 to 9637. [2022-07-12 09:37:59,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9637 states, 8294 states have (on average 1.418615866891729) internal successors, (11766), 8361 states have internal predecessors, (11766), 793 states have call successors, (793), 425 states have call predecessors, (793), 548 states have return successors, (1053), 867 states have call predecessors, (1053), 791 states have call successors, (1053) [2022-07-12 09:37:59,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9637 states to 9637 states and 13612 transitions. [2022-07-12 09:37:59,514 INFO L78 Accepts]: Start accepts. Automaton has 9637 states and 13612 transitions. Word has length 167 [2022-07-12 09:37:59,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:59,514 INFO L495 AbstractCegarLoop]: Abstraction has 9637 states and 13612 transitions. [2022-07-12 09:37:59,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:37:59,514 INFO L276 IsEmpty]: Start isEmpty. Operand 9637 states and 13612 transitions. [2022-07-12 09:37:59,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:37:59,518 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:59,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:59,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 09:37:59,518 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:59,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:59,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1420545447, now seen corresponding path program 1 times [2022-07-12 09:37:59,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:59,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506634261] [2022-07-12 09:37:59,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:59,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:59,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:59,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:37:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:59,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:37:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:59,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:37:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:59,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:37:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:59,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:59,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:59,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506634261] [2022-07-12 09:37:59,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506634261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:59,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:59,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:59,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584236631] [2022-07-12 09:37:59,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:59,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:59,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:59,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:59,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:59,662 INFO L87 Difference]: Start difference. First operand 9637 states and 13612 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:38:04,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:38:04,083 INFO L93 Difference]: Finished difference Result 26559 states and 40146 transitions. [2022-07-12 09:38:04,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:38:04,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:38:04,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:38:04,149 INFO L225 Difference]: With dead ends: 26559 [2022-07-12 09:38:04,150 INFO L226 Difference]: Without dead ends: 20911 [2022-07-12 09:38:04,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:38:04,165 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 2061 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 2938 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2103 SdHoareTripleChecker+Valid, 2967 SdHoareTripleChecker+Invalid, 3066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:38:04,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2103 Valid, 2967 Invalid, 3066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2938 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 09:38:04,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20911 states. [2022-07-12 09:38:05,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20911 to 14889. [2022-07-12 09:38:05,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14889 states, 13130 states have (on average 1.4609291698400608) internal successors, (19182), 13213 states have internal predecessors, (19182), 1097 states have call successors, (1097), 521 states have call predecessors, (1097), 660 states have return successors, (1535), 1187 states have call predecessors, (1535), 1095 states have call successors, (1535) [2022-07-12 09:38:05,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14889 states to 14889 states and 21814 transitions. [2022-07-12 09:38:05,392 INFO L78 Accepts]: Start accepts. Automaton has 14889 states and 21814 transitions. Word has length 167 [2022-07-12 09:38:05,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:38:05,392 INFO L495 AbstractCegarLoop]: Abstraction has 14889 states and 21814 transitions. [2022-07-12 09:38:05,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:38:05,393 INFO L276 IsEmpty]: Start isEmpty. Operand 14889 states and 21814 transitions. [2022-07-12 09:38:05,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:38:05,398 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:38:05,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:38:05,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 09:38:05,399 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:38:05,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:38:05,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1131726057, now seen corresponding path program 1 times [2022-07-12 09:38:05,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:38:05,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913289128] [2022-07-12 09:38:05,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:38:05,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:38:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:05,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:38:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:05,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:38:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:05,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:38:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:05,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:38:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:05,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:38:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:05,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:38:05,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:38:05,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913289128] [2022-07-12 09:38:05,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913289128] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:38:05,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:38:05,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:38:05,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073945653] [2022-07-12 09:38:05,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:38:05,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:38:05,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:38:05,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:38:05,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:38:05,515 INFO L87 Difference]: Start difference. First operand 14889 states and 21814 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:38:13,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:38:13,006 INFO L93 Difference]: Finished difference Result 47441 states and 73006 transitions. [2022-07-12 09:38:13,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:38:13,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:38:13,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:38:13,220 INFO L225 Difference]: With dead ends: 47441 [2022-07-12 09:38:13,221 INFO L226 Difference]: Without dead ends: 36541 [2022-07-12 09:38:13,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:38:13,244 INFO L413 NwaCegarLoop]: 1146 mSDtfsCounter, 1746 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 3400 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1775 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 3525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 3400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:38:13,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1775 Valid, 3122 Invalid, 3525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 3400 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-12 09:38:13,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36541 states. [2022-07-12 09:38:15,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36541 to 25450. [2022-07-12 09:38:15,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25450 states, 22875 states have (on average 1.4926338797814207) internal successors, (34144), 22990 states have internal predecessors, (34144), 1689 states have call successors, (1689), 713 states have call predecessors, (1689), 884 states have return successors, (2645), 1811 states have call predecessors, (2645), 1687 states have call successors, (2645) [2022-07-12 09:38:15,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25450 states to 25450 states and 38478 transitions. [2022-07-12 09:38:15,577 INFO L78 Accepts]: Start accepts. Automaton has 25450 states and 38478 transitions. Word has length 167 [2022-07-12 09:38:15,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:38:15,578 INFO L495 AbstractCegarLoop]: Abstraction has 25450 states and 38478 transitions. [2022-07-12 09:38:15,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:38:15,578 INFO L276 IsEmpty]: Start isEmpty. Operand 25450 states and 38478 transitions. [2022-07-12 09:38:15,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:38:15,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:38:15,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:38:15,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 09:38:15,587 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:38:15,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:38:15,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1676598631, now seen corresponding path program 1 times [2022-07-12 09:38:15,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:38:15,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041092863] [2022-07-12 09:38:15,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:38:15,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:38:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:15,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:38:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:15,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:38:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:15,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:38:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:15,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:38:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:15,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:38:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:15,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:38:15,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:38:15,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041092863] [2022-07-12 09:38:15,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041092863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:38:15,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:38:15,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:38:15,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924901007] [2022-07-12 09:38:15,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:38:15,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:38:15,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:38:15,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:38:15,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:38:15,683 INFO L87 Difference]: Start difference. First operand 25450 states and 38478 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:38:27,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:38:27,189 INFO L93 Difference]: Finished difference Result 88816 states and 138772 transitions. [2022-07-12 09:38:27,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:38:27,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:38:27,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:38:27,397 INFO L225 Difference]: With dead ends: 88816 [2022-07-12 09:38:27,397 INFO L226 Difference]: Without dead ends: 67355 [2022-07-12 09:38:27,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:38:27,462 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 1982 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 2923 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 2961 SdHoareTripleChecker+Invalid, 3051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:38:27,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2024 Valid, 2961 Invalid, 3051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2923 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 09:38:27,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67355 states. [2022-07-12 09:38:31,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67355 to 46539. [2022-07-12 09:38:31,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46539 states, 42364 states have (on average 1.513029931073553) internal successors, (64098), 42543 states have internal predecessors, (64098), 2841 states have call successors, (2841), 1097 states have call predecessors, (2841), 1332 states have return successors, (5319), 3027 states have call predecessors, (5319), 2839 states have call successors, (5319) [2022-07-12 09:38:32,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46539 states to 46539 states and 72258 transitions. [2022-07-12 09:38:32,024 INFO L78 Accepts]: Start accepts. Automaton has 46539 states and 72258 transitions. Word has length 167 [2022-07-12 09:38:32,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:38:32,024 INFO L495 AbstractCegarLoop]: Abstraction has 46539 states and 72258 transitions. [2022-07-12 09:38:32,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:38:32,024 INFO L276 IsEmpty]: Start isEmpty. Operand 46539 states and 72258 transitions. [2022-07-12 09:38:32,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:38:32,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:38:32,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:38:32,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 09:38:32,039 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:38:32,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:38:32,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1001438505, now seen corresponding path program 1 times [2022-07-12 09:38:32,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:38:32,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033323997] [2022-07-12 09:38:32,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:38:32,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:38:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:32,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:38:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:32,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:38:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:32,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:38:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:32,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:38:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:32,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:38:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:38:32,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:38:32,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:38:32,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033323997] [2022-07-12 09:38:32,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033323997] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:38:32,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:38:32,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:38:32,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177487543] [2022-07-12 09:38:32,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:38:32,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:38:32,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:38:32,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:38:32,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:38:32,133 INFO L87 Difference]: Start difference. First operand 46539 states and 72258 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:38:52,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:38:52,514 INFO L93 Difference]: Finished difference Result 170383 states and 270362 transitions. [2022-07-12 09:38:52,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:38:52,515 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:38:52,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:38:52,962 INFO L225 Difference]: With dead ends: 170383 [2022-07-12 09:38:52,962 INFO L226 Difference]: Without dead ends: 127833 [2022-07-12 09:38:53,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:38:53,092 INFO L413 NwaCegarLoop]: 980 mSDtfsCounter, 1942 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 2915 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1984 SdHoareTripleChecker+Valid, 2956 SdHoareTripleChecker+Invalid, 3043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:38:53,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1984 Valid, 2956 Invalid, 3043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2915 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 09:38:53,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127833 states. [2022-07-12 09:39:02,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127833 to 88652. [2022-07-12 09:39:02,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88652 states, 81341 states have (on average 1.5252824528835396) internal successors, (124068), 81648 states have internal predecessors, (124068), 5081 states have call successors, (5081), 1865 states have call predecessors, (5081), 2228 states have return successors, (12061), 5395 states have call predecessors, (12061), 5079 states have call successors, (12061) [2022-07-12 09:39:02,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88652 states to 88652 states and 141210 transitions. [2022-07-12 09:39:02,832 INFO L78 Accepts]: Start accepts. Automaton has 88652 states and 141210 transitions. Word has length 167 [2022-07-12 09:39:02,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:39:02,833 INFO L495 AbstractCegarLoop]: Abstraction has 88652 states and 141210 transitions. [2022-07-12 09:39:02,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:39:02,833 INFO L276 IsEmpty]: Start isEmpty. Operand 88652 states and 141210 transitions. [2022-07-12 09:39:02,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:39:02,882 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:39:02,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:39:02,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 09:39:02,882 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:39:02,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:39:02,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1949490471, now seen corresponding path program 1 times [2022-07-12 09:39:02,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:39:02,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132403933] [2022-07-12 09:39:02,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:39:02,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:39:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:39:02,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:39:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:39:02,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:39:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:39:02,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:39:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:39:02,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:39:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:39:02,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:39:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:39:03,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:39:03,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:39:03,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132403933] [2022-07-12 09:39:03,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132403933] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:39:03,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:39:03,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:39:03,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747574180] [2022-07-12 09:39:03,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:39:03,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:39:03,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:39:03,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:39:03,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:39:03,003 INFO L87 Difference]: Start difference. First operand 88652 states and 141210 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:39:42,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:39:42,180 INFO L93 Difference]: Finished difference Result 331150 states and 535600 transitions. [2022-07-12 09:39:42,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:39:42,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:39:42,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:39:43,167 INFO L225 Difference]: With dead ends: 331150 [2022-07-12 09:39:43,168 INFO L226 Difference]: Without dead ends: 246487 [2022-07-12 09:39:43,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:39:43,378 INFO L413 NwaCegarLoop]: 1081 mSDtfsCounter, 1716 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 3268 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1745 SdHoareTripleChecker+Valid, 3057 SdHoareTripleChecker+Invalid, 3396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 3268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:39:43,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1745 Valid, 3057 Invalid, 3396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 3268 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 09:39:43,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246487 states. [2022-07-12 09:40:01,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246487 to 172749. [2022-07-12 09:40:01,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172749 states, 159294 states have (on average 1.5326000979321255) internal successors, (244134), 159857 states have internal predecessors, (244134), 9433 states have call successors, (9433), 3401 states have call predecessors, (9433), 4020 states have return successors, (29791), 10003 states have call predecessors, (29791), 9431 states have call successors, (29791) [2022-07-12 09:40:02,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172749 states to 172749 states and 283358 transitions. [2022-07-12 09:40:02,570 INFO L78 Accepts]: Start accepts. Automaton has 172749 states and 283358 transitions. Word has length 167 [2022-07-12 09:40:02,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:40:02,570 INFO L495 AbstractCegarLoop]: Abstraction has 172749 states and 283358 transitions. [2022-07-12 09:40:02,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:40:02,570 INFO L276 IsEmpty]: Start isEmpty. Operand 172749 states and 283358 transitions. [2022-07-12 09:40:02,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:40:02,630 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:40:02,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:40:02,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 09:40:02,630 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:40:02,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:40:02,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1760705175, now seen corresponding path program 1 times [2022-07-12 09:40:02,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:40:02,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626508400] [2022-07-12 09:40:02,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:40:02,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:40:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:40:02,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:40:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:40:02,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:40:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:40:02,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:40:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:40:02,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:40:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:40:02,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:40:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:40:02,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:40:02,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:40:02,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626508400] [2022-07-12 09:40:02,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626508400] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:40:02,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:40:02,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:40:02,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006153146] [2022-07-12 09:40:02,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:40:02,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:40:02,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:40:02,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:40:02,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:40:02,746 INFO L87 Difference]: Start difference. First operand 172749 states and 283358 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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)