./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.10.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.10.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 906e84f0a25a0f5132fcddd369ea6157dd86409b963593c3fbd2737ae25908f1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 19:40:43,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 19:40:43,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 19:40:43,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 19:40:43,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 19:40:43,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 19:40:43,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 19:40:43,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 19:40:43,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 19:40:43,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 19:40:43,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 19:40:43,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 19:40:43,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 19:40:43,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 19:40:43,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 19:40:43,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 19:40:43,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 19:40:43,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 19:40:43,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 19:40:44,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 19:40:44,002 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 19:40:44,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 19:40:44,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 19:40:44,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 19:40:44,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 19:40:44,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 19:40:44,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 19:40:44,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 19:40:44,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 19:40:44,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 19:40:44,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 19:40:44,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 19:40:44,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 19:40:44,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 19:40:44,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 19:40:44,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 19:40:44,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 19:40:44,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 19:40:44,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 19:40:44,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 19:40:44,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 19:40:44,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 19:40:44,027 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 19:40:44,057 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 19:40:44,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 19:40:44,058 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 19:40:44,059 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 19:40:44,059 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 19:40:44,060 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 19:40:44,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 19:40:44,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 19:40:44,061 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 19:40:44,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 19:40:44,062 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 19:40:44,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 19:40:44,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 19:40:44,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 19:40:44,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 19:40:44,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 19:40:44,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 19:40:44,064 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 19:40:44,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 19:40:44,064 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 19:40:44,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 19:40:44,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 19:40:44,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 19:40:44,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 19:40:44,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:40:44,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 19:40:44,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 19:40:44,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 19:40:44,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 19:40:44,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 19:40:44,067 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 19:40:44,067 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 19:40:44,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 19:40:44,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 906e84f0a25a0f5132fcddd369ea6157dd86409b963593c3fbd2737ae25908f1 [2022-07-22 19:40:44,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 19:40:44,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 19:40:44,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 19:40:44,323 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 19:40:44,323 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 19:40:44,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.10.cil-1.c [2022-07-22 19:40:44,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b9911ed0/ed767d0fa71748e59012ee11e5261e0d/FLAGf995dc4b7 [2022-07-22 19:40:45,169 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 19:40:45,169 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.10.cil-1.c [2022-07-22 19:40:45,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b9911ed0/ed767d0fa71748e59012ee11e5261e0d/FLAGf995dc4b7 [2022-07-22 19:40:45,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b9911ed0/ed767d0fa71748e59012ee11e5261e0d [2022-07-22 19:40:45,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 19:40:45,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 19:40:45,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 19:40:45,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 19:40:45,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 19:40:45,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:40:45" (1/1) ... [2022-07-22 19:40:45,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fcdaa35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:45, skipping insertion in model container [2022-07-22 19:40:45,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:40:45" (1/1) ... [2022-07-22 19:40:45,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 19:40:45,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 19:40:47,199 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.10.cil-1.c[382357,382370] [2022-07-22 19:40:47,221 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.10.cil-1.c[383339,383352] [2022-07-22 19:40:47,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:40:47,434 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 19:40:48,175 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.10.cil-1.c[382357,382370] [2022-07-22 19:40:48,181 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.10.cil-1.c[383339,383352] [2022-07-22 19:40:48,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:40:48,306 INFO L208 MainTranslator]: Completed translation [2022-07-22 19:40:48,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:48 WrapperNode [2022-07-22 19:40:48,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 19:40:48,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 19:40:48,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 19:40:48,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 19:40:48,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:48" (1/1) ... [2022-07-22 19:40:48,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:48" (1/1) ... [2022-07-22 19:40:48,742 INFO L137 Inliner]: procedures = 64, calls = 72, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 13088 [2022-07-22 19:40:48,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 19:40:48,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 19:40:48,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 19:40:48,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 19:40:48,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:48" (1/1) ... [2022-07-22 19:40:48,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:48" (1/1) ... [2022-07-22 19:40:48,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:48" (1/1) ... [2022-07-22 19:40:48,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:48" (1/1) ... [2022-07-22 19:40:49,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:48" (1/1) ... [2022-07-22 19:40:49,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:48" (1/1) ... [2022-07-22 19:40:49,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:48" (1/1) ... [2022-07-22 19:40:49,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 19:40:49,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 19:40:49,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 19:40:49,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 19:40:49,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:48" (1/1) ... [2022-07-22 19:40:49,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:40:49,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:40:49,529 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) [2022-07-22 19:40:49,552 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 [2022-07-22 19:40:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 19:40:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 19:40:49,575 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 19:40:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 19:40:49,575 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 19:40:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 19:40:49,575 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 19:40:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-22 19:40:49,576 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-22 19:40:49,576 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 19:40:49,576 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 19:40:49,576 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 19:40:49,576 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 19:40:49,576 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 19:40:49,577 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 19:40:49,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 19:40:49,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 19:40:49,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 19:40:49,699 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 19:40:49,701 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 19:40:55,792 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 19:40:55,820 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 19:40:55,821 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-07-22 19:40:55,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:40:55 BoogieIcfgContainer [2022-07-22 19:40:55,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 19:40:55,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 19:40:55,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 19:40:55,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 19:40:55,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 07:40:45" (1/3) ... [2022-07-22 19:40:55,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7d17ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:40:55, skipping insertion in model container [2022-07-22 19:40:55,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:40:48" (2/3) ... [2022-07-22 19:40:55,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7d17ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:40:55, skipping insertion in model container [2022-07-22 19:40:55,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:40:55" (3/3) ... [2022-07-22 19:40:55,836 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.10.cil-1.c [2022-07-22 19:40:55,848 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 19:40:55,849 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 19:40:55,946 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 19:40:55,954 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@7e7d03b1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4cd8c862 [2022-07-22 19:40:55,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 19:40:55,968 INFO L276 IsEmpty]: Start isEmpty. Operand has 2523 states, 2487 states have (on average 1.845999195818255) internal successors, (4591), 2492 states have internal predecessors, (4591), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-22 19:40:55,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-22 19:40:55,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:40:55,990 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] [2022-07-22 19:40:55,991 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:40:55,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:40:55,997 INFO L85 PathProgramCache]: Analyzing trace with hash -289990772, now seen corresponding path program 1 times [2022-07-22 19:40:56,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:40:56,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659661626] [2022-07-22 19:40:56,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:56,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:40:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:56,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:40:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:56,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 19:40:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:56,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 19:40:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:56,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 19:40:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:56,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 19:40:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:56,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:40:56,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:40:56,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659661626] [2022-07-22 19:40:56,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659661626] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:40:56,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:40:56,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 19:40:56,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842044810] [2022-07-22 19:40:56,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:40:56,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 19:40:56,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:40:56,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 19:40:56,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 19:40:56,433 INFO L87 Difference]: Start difference. First operand has 2523 states, 2487 states have (on average 1.845999195818255) internal successors, (4591), 2492 states have internal predecessors, (4591), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:40:57,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:40:57,963 INFO L93 Difference]: Finished difference Result 5155 states and 9474 transitions. [2022-07-22 19:40:57,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 19:40:57,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-22 19:40:57,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:40:58,001 INFO L225 Difference]: With dead ends: 5155 [2022-07-22 19:40:58,002 INFO L226 Difference]: Without dead ends: 2575 [2022-07-22 19:40:58,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:40:58,026 INFO L413 NwaCegarLoop]: 4601 mSDtfsCounter, 896 mSDsluCounter, 12431 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 17032 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:40:58,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 17032 Invalid, 678 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 19:40:58,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2022-07-22 19:40:58,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 2455. [2022-07-22 19:40:58,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2421 states have (on average 1.8306484923585296) internal successors, (4432), 2424 states have internal predecessors, (4432), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-22 19:40:58,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4482 transitions. [2022-07-22 19:40:58,248 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4482 transitions. Word has length 157 [2022-07-22 19:40:58,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:40:58,249 INFO L495 AbstractCegarLoop]: Abstraction has 2455 states and 4482 transitions. [2022-07-22 19:40:58,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:40:58,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4482 transitions. [2022-07-22 19:40:58,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-22 19:40:58,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:40:58,258 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] [2022-07-22 19:40:58,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 19:40:58,259 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:40:58,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:40:58,260 INFO L85 PathProgramCache]: Analyzing trace with hash -628278322, now seen corresponding path program 1 times [2022-07-22 19:40:58,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:40:58,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803741232] [2022-07-22 19:40:58,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:58,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:40:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:58,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:40:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:58,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 19:40:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:58,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 19:40:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:58,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 19:40:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:58,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 19:40:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:58,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:40:58,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:40:58,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803741232] [2022-07-22 19:40:58,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803741232] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:40:58,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:40:58,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:40:58,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132371738] [2022-07-22 19:40:58,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:40:58,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:40:58,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:40:58,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:40:58,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:40:58,542 INFO L87 Difference]: Start difference. First operand 2455 states and 4482 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:41:01,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:41:01,846 INFO L93 Difference]: Finished difference Result 3362 states and 5958 transitions. [2022-07-22 19:41:01,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:41:01,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-22 19:41:01,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:41:01,863 INFO L225 Difference]: With dead ends: 3362 [2022-07-22 19:41:01,863 INFO L226 Difference]: Without dead ends: 3046 [2022-07-22 19:41:01,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:41:01,867 INFO L413 NwaCegarLoop]: 4852 mSDtfsCounter, 5234 mSDsluCounter, 17533 mSDsCounter, 0 mSdLazyCounter, 2817 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5251 SdHoareTripleChecker+Valid, 22385 SdHoareTripleChecker+Invalid, 2898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 19:41:01,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5251 Valid, 22385 Invalid, 2898 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 2817 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 19:41:01,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2022-07-22 19:41:01,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 2787. [2022-07-22 19:41:01,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2724 states have (on average 1.8050660792951543) internal successors, (4917), 2729 states have internal predecessors, (4917), 47 states have call successors, (47), 13 states have call predecessors, (47), 14 states have return successors, (52), 46 states have call predecessors, (52), 45 states have call successors, (52) [2022-07-22 19:41:01,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 5016 transitions. [2022-07-22 19:41:01,959 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 5016 transitions. Word has length 157 [2022-07-22 19:41:01,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:41:01,959 INFO L495 AbstractCegarLoop]: Abstraction has 2787 states and 5016 transitions. [2022-07-22 19:41:01,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:41:01,960 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 5016 transitions. [2022-07-22 19:41:01,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-22 19:41:01,962 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:41:01,963 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] [2022-07-22 19:41:01,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 19:41:01,963 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:41:01,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:41:01,964 INFO L85 PathProgramCache]: Analyzing trace with hash 770675280, now seen corresponding path program 1 times [2022-07-22 19:41:01,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:41:01,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598188258] [2022-07-22 19:41:01,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:41:01,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:41:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:02,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:41:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:02,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 19:41:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:02,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 19:41:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:02,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 19:41:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:02,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 19:41:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:02,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:41:02,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:41:02,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598188258] [2022-07-22 19:41:02,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598188258] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:41:02,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:41:02,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:41:02,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599358860] [2022-07-22 19:41:02,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:41:02,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:41:02,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:41:02,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:41:02,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:41:02,145 INFO L87 Difference]: Start difference. First operand 2787 states and 5016 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:41:05,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:41:05,223 INFO L93 Difference]: Finished difference Result 4512 states and 7800 transitions. [2022-07-22 19:41:05,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:41:05,223 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-22 19:41:05,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:41:05,243 INFO L225 Difference]: With dead ends: 4512 [2022-07-22 19:41:05,243 INFO L226 Difference]: Without dead ends: 3866 [2022-07-22 19:41:05,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:41:05,248 INFO L413 NwaCegarLoop]: 4779 mSDtfsCounter, 5274 mSDsluCounter, 17458 mSDsCounter, 0 mSdLazyCounter, 2669 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5291 SdHoareTripleChecker+Valid, 22237 SdHoareTripleChecker+Invalid, 2757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 19:41:05,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5291 Valid, 22237 Invalid, 2757 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 2669 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 19:41:05,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3866 states. [2022-07-22 19:41:05,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3866 to 3399. [2022-07-22 19:41:05,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3399 states, 3284 states have (on average 1.7649208282582216) internal successors, (5796), 3291 states have internal predecessors, (5796), 85 states have call successors, (85), 25 states have call predecessors, (85), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2022-07-22 19:41:05,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3399 states to 3399 states and 5981 transitions. [2022-07-22 19:41:05,397 INFO L78 Accepts]: Start accepts. Automaton has 3399 states and 5981 transitions. Word has length 157 [2022-07-22 19:41:05,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:41:05,398 INFO L495 AbstractCegarLoop]: Abstraction has 3399 states and 5981 transitions. [2022-07-22 19:41:05,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:41:05,399 INFO L276 IsEmpty]: Start isEmpty. Operand 3399 states and 5981 transitions. [2022-07-22 19:41:05,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-22 19:41:05,405 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:41:05,405 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] [2022-07-22 19:41:05,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 19:41:05,406 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:41:05,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:41:05,407 INFO L85 PathProgramCache]: Analyzing trace with hash -846765170, now seen corresponding path program 1 times [2022-07-22 19:41:05,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:41:05,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596584151] [2022-07-22 19:41:05,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:41:05,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:41:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:05,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:41:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:05,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 19:41:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:05,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 19:41:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:05,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 19:41:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:05,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 19:41:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:05,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:41:05,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:41:05,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596584151] [2022-07-22 19:41:05,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596584151] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:41:05,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:41:05,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:41:05,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59387039] [2022-07-22 19:41:05,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:41:05,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:41:05,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:41:05,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:41:05,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:41:05,564 INFO L87 Difference]: Start difference. First operand 3399 states and 5981 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:41:08,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:41:08,530 INFO L93 Difference]: Finished difference Result 6762 states and 11393 transitions. [2022-07-22 19:41:08,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:41:08,530 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-22 19:41:08,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:41:08,556 INFO L225 Difference]: With dead ends: 6762 [2022-07-22 19:41:08,556 INFO L226 Difference]: Without dead ends: 5504 [2022-07-22 19:41:08,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:41:08,563 INFO L413 NwaCegarLoop]: 4843 mSDtfsCounter, 5233 mSDsluCounter, 17533 mSDsCounter, 0 mSdLazyCounter, 2813 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 22376 SdHoareTripleChecker+Invalid, 2897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 19:41:08,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 22376 Invalid, 2897 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 2813 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 19:41:08,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5504 states. [2022-07-22 19:41:08,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5504 to 4625. [2022-07-22 19:41:08,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4625 states, 4406 states have (on average 1.7149341806627327) internal successors, (7556), 4417 states have internal predecessors, (7556), 161 states have call successors, (161), 49 states have call predecessors, (161), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2022-07-22 19:41:08,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4625 states to 4625 states and 7919 transitions. [2022-07-22 19:41:08,763 INFO L78 Accepts]: Start accepts. Automaton has 4625 states and 7919 transitions. Word has length 157 [2022-07-22 19:41:08,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:41:08,769 INFO L495 AbstractCegarLoop]: Abstraction has 4625 states and 7919 transitions. [2022-07-22 19:41:08,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:41:08,770 INFO L276 IsEmpty]: Start isEmpty. Operand 4625 states and 7919 transitions. [2022-07-22 19:41:08,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-22 19:41:08,773 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:41:08,774 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] [2022-07-22 19:41:08,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 19:41:08,774 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:41:08,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:41:08,775 INFO L85 PathProgramCache]: Analyzing trace with hash -483298672, now seen corresponding path program 1 times [2022-07-22 19:41:08,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:41:08,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878716559] [2022-07-22 19:41:08,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:41:08,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:41:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:08,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:41:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:08,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 19:41:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:08,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 19:41:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:08,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 19:41:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:08,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 19:41:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:08,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:41:08,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:41:08,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878716559] [2022-07-22 19:41:08,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878716559] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:41:08,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:41:08,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:41:08,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432275132] [2022-07-22 19:41:08,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:41:08,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:41:08,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:41:08,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:41:08,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:41:08,918 INFO L87 Difference]: Start difference. First operand 4625 states and 7919 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:41:11,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:41:11,877 INFO L93 Difference]: Finished difference Result 11260 states and 18593 transitions. [2022-07-22 19:41:11,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:41:11,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-22 19:41:11,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:41:11,920 INFO L225 Difference]: With dead ends: 11260 [2022-07-22 19:41:11,920 INFO L226 Difference]: Without dead ends: 8776 [2022-07-22 19:41:11,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:41:11,935 INFO L413 NwaCegarLoop]: 4840 mSDtfsCounter, 5233 mSDsluCounter, 17533 mSDsCounter, 0 mSdLazyCounter, 2807 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 22373 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 19:41:11,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 22373 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2807 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 19:41:11,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8776 states. [2022-07-22 19:41:12,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8776 to 7083. [2022-07-22 19:41:12,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7083 states, 6656 states have (on average 1.6652644230769231) internal successors, (11084), 6675 states have internal predecessors, (11084), 313 states have call successors, (313), 97 states have call predecessors, (313), 112 states have return successors, (424), 326 states have call predecessors, (424), 311 states have call successors, (424) [2022-07-22 19:41:12,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7083 states to 7083 states and 11821 transitions. [2022-07-22 19:41:12,331 INFO L78 Accepts]: Start accepts. Automaton has 7083 states and 11821 transitions. Word has length 157 [2022-07-22 19:41:12,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:41:12,331 INFO L495 AbstractCegarLoop]: Abstraction has 7083 states and 11821 transitions. [2022-07-22 19:41:12,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:41:12,332 INFO L276 IsEmpty]: Start isEmpty. Operand 7083 states and 11821 transitions. [2022-07-22 19:41:12,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-22 19:41:12,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:41:12,337 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] [2022-07-22 19:41:12,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 19:41:12,337 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:41:12,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:41:12,338 INFO L85 PathProgramCache]: Analyzing trace with hash -194479282, now seen corresponding path program 1 times [2022-07-22 19:41:12,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:41:12,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670984331] [2022-07-22 19:41:12,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:41:12,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:41:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:12,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:41:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:12,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 19:41:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:12,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 19:41:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:12,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 19:41:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:12,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 19:41:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:12,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:41:12,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:41:12,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670984331] [2022-07-22 19:41:12,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670984331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:41:12,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:41:12,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:41:12,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012060719] [2022-07-22 19:41:12,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:41:12,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:41:12,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:41:12,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:41:12,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:41:12,470 INFO L87 Difference]: Start difference. First operand 7083 states and 11821 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:41:15,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:41:15,745 INFO L93 Difference]: Finished difference Result 20254 states and 33049 transitions. [2022-07-22 19:41:15,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:41:15,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-22 19:41:15,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:41:15,814 INFO L225 Difference]: With dead ends: 20254 [2022-07-22 19:41:15,814 INFO L226 Difference]: Without dead ends: 15312 [2022-07-22 19:41:15,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:41:15,841 INFO L413 NwaCegarLoop]: 4837 mSDtfsCounter, 5233 mSDsluCounter, 17533 mSDsCounter, 0 mSdLazyCounter, 2801 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 22370 SdHoareTripleChecker+Invalid, 2885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 19:41:15,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 22370 Invalid, 2885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2801 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 19:41:15,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15312 states. [2022-07-22 19:41:16,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15312 to 12013. [2022-07-22 19:41:16,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12013 states, 11170 states have (on average 1.6257833482542525) internal successors, (18160), 11205 states have internal predecessors, (18160), 617 states have call successors, (617), 193 states have call predecessors, (617), 224 states have return successors, (922), 646 states have call predecessors, (922), 615 states have call successors, (922) [2022-07-22 19:41:16,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12013 states to 12013 states and 19699 transitions. [2022-07-22 19:41:16,659 INFO L78 Accepts]: Start accepts. Automaton has 12013 states and 19699 transitions. Word has length 157 [2022-07-22 19:41:16,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:41:16,660 INFO L495 AbstractCegarLoop]: Abstraction has 12013 states and 19699 transitions. [2022-07-22 19:41:16,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:41:16,660 INFO L276 IsEmpty]: Start isEmpty. Operand 12013 states and 19699 transitions. [2022-07-22 19:41:16,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-22 19:41:16,668 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:41:16,668 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] [2022-07-22 19:41:16,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 19:41:16,669 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:41:16,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:41:16,669 INFO L85 PathProgramCache]: Analyzing trace with hash -739351856, now seen corresponding path program 1 times [2022-07-22 19:41:16,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:41:16,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771460660] [2022-07-22 19:41:16,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:41:16,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:41:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:16,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:41:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:16,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 19:41:16,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:16,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 19:41:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:16,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 19:41:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:16,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 19:41:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:16,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:41:16,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:41:16,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771460660] [2022-07-22 19:41:16,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771460660] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:41:16,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:41:16,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:41:16,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568066842] [2022-07-22 19:41:16,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:41:16,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:41:16,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:41:16,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:41:16,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:41:16,802 INFO L87 Difference]: Start difference. First operand 12013 states and 19699 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:41:20,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:41:20,665 INFO L93 Difference]: Finished difference Result 38240 states and 62149 transitions. [2022-07-22 19:41:20,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:41:20,666 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-22 19:41:20,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:41:20,787 INFO L225 Difference]: With dead ends: 38240 [2022-07-22 19:41:20,787 INFO L226 Difference]: Without dead ends: 28368 [2022-07-22 19:41:20,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:41:20,836 INFO L413 NwaCegarLoop]: 4834 mSDtfsCounter, 5233 mSDsluCounter, 17533 mSDsCounter, 0 mSdLazyCounter, 2795 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 22367 SdHoareTripleChecker+Invalid, 2879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 19:41:20,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 22367 Invalid, 2879 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 2795 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 19:41:20,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28368 states. [2022-07-22 19:41:21,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28368 to 21903. [2022-07-22 19:41:22,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21903 states, 20228 states have (on average 1.5995649594621317) internal successors, (32356), 20295 states have internal predecessors, (32356), 1225 states have call successors, (1225), 385 states have call predecessors, (1225), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2022-07-22 19:41:22,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21903 states to 21903 states and 35661 transitions. [2022-07-22 19:41:22,087 INFO L78 Accepts]: Start accepts. Automaton has 21903 states and 35661 transitions. Word has length 157 [2022-07-22 19:41:22,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:41:22,087 INFO L495 AbstractCegarLoop]: Abstraction has 21903 states and 35661 transitions. [2022-07-22 19:41:22,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:41:22,088 INFO L276 IsEmpty]: Start isEmpty. Operand 21903 states and 35661 transitions. [2022-07-22 19:41:22,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-22 19:41:22,101 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:41:22,101 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] [2022-07-22 19:41:22,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 19:41:22,101 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:41:22,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:41:22,102 INFO L85 PathProgramCache]: Analyzing trace with hash -64191730, now seen corresponding path program 1 times [2022-07-22 19:41:22,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:41:22,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294252992] [2022-07-22 19:41:22,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:41:22,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:41:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:22,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:41:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:22,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 19:41:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:22,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 19:41:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:22,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 19:41:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:22,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 19:41:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:22,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:41:22,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:41:22,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294252992] [2022-07-22 19:41:22,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294252992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:41:22,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:41:22,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:41:22,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412392914] [2022-07-22 19:41:22,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:41:22,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:41:22,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:41:22,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:41:22,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:41:22,265 INFO L87 Difference]: Start difference. First operand 21903 states and 35661 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:41:24,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:41:24,834 INFO L93 Difference]: Finished difference Result 48585 states and 79664 transitions. [2022-07-22 19:41:24,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 19:41:24,835 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-22 19:41:24,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:41:24,959 INFO L225 Difference]: With dead ends: 48585 [2022-07-22 19:41:24,960 INFO L226 Difference]: Without dead ends: 28821 [2022-07-22 19:41:25,019 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 [2022-07-22 19:41:25,020 INFO L413 NwaCegarLoop]: 4508 mSDtfsCounter, 5073 mSDsluCounter, 12536 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5091 SdHoareTripleChecker+Valid, 17044 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:41:25,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5091 Valid, 17044 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 19:41:25,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28821 states. [2022-07-22 19:41:26,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28821 to 21903. [2022-07-22 19:41:26,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21903 states, 20228 states have (on average 1.5963515918528772) internal successors, (32291), 20295 states have internal predecessors, (32291), 1225 states have call successors, (1225), 385 states have call predecessors, (1225), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2022-07-22 19:41:26,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21903 states to 21903 states and 35596 transitions. [2022-07-22 19:41:26,319 INFO L78 Accepts]: Start accepts. Automaton has 21903 states and 35596 transitions. Word has length 157 [2022-07-22 19:41:26,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:41:26,320 INFO L495 AbstractCegarLoop]: Abstraction has 21903 states and 35596 transitions. [2022-07-22 19:41:26,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:41:26,320 INFO L276 IsEmpty]: Start isEmpty. Operand 21903 states and 35596 transitions. [2022-07-22 19:41:26,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-22 19:41:26,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:41:26,334 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] [2022-07-22 19:41:26,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 19:41:26,334 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:41:26,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:41:26,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1012243696, now seen corresponding path program 1 times [2022-07-22 19:41:26,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:41:26,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838530551] [2022-07-22 19:41:26,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:41:26,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:41:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:26,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:41:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:26,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 19:41:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:26,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 19:41:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:26,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 19:41:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:26,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 19:41:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:26,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:41:26,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:41:26,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838530551] [2022-07-22 19:41:26,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838530551] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:41:26,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:41:26,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:41:26,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490960649] [2022-07-22 19:41:26,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:41:26,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:41:26,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:41:26,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:41:26,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:41:26,455 INFO L87 Difference]: Start difference. First operand 21903 states and 35596 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:41:31,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:41:31,789 INFO L93 Difference]: Finished difference Result 74083 states and 120373 transitions. [2022-07-22 19:41:31,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:41:31,790 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-22 19:41:31,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:41:31,999 INFO L225 Difference]: With dead ends: 74083 [2022-07-22 19:41:31,999 INFO L226 Difference]: Without dead ends: 54321 [2022-07-22 19:41:32,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:41:32,057 INFO L413 NwaCegarLoop]: 4818 mSDtfsCounter, 5261 mSDsluCounter, 17533 mSDsCounter, 0 mSdLazyCounter, 2691 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5278 SdHoareTripleChecker+Valid, 22351 SdHoareTripleChecker+Invalid, 2779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 19:41:32,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5278 Valid, 22351 Invalid, 2779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2691 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 19:41:32,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54321 states. [2022-07-22 19:41:34,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54321 to 41872. [2022-07-22 19:41:34,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41872 states, 38533 states have (on average 1.5805154023823735) internal successors, (60902), 38664 states have internal predecessors, (60902), 2441 states have call successors, (2441), 769 states have call predecessors, (2441), 896 states have return successors, (4882), 2566 states have call predecessors, (4882), 2439 states have call successors, (4882) [2022-07-22 19:41:34,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41872 states to 41872 states and 68225 transitions. [2022-07-22 19:41:34,628 INFO L78 Accepts]: Start accepts. Automaton has 41872 states and 68225 transitions. Word has length 157 [2022-07-22 19:41:34,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:41:34,628 INFO L495 AbstractCegarLoop]: Abstraction has 41872 states and 68225 transitions. [2022-07-22 19:41:34,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:41:34,629 INFO L276 IsEmpty]: Start isEmpty. Operand 41872 states and 68225 transitions. [2022-07-22 19:41:34,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-22 19:41:34,651 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:41:34,651 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] [2022-07-22 19:41:34,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 19:41:34,651 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:41:34,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:41:34,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1446749294, now seen corresponding path program 1 times [2022-07-22 19:41:34,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:41:34,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465102349] [2022-07-22 19:41:34,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:41:34,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:41:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:34,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:41:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:34,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 19:41:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:34,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 19:41:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:34,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 19:41:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:34,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 19:41:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:34,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:41:34,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:41:34,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465102349] [2022-07-22 19:41:34,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465102349] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:41:34,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:41:34,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:41:34,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250933120] [2022-07-22 19:41:34,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:41:34,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:41:34,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:41:34,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:41:34,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:41:34,791 INFO L87 Difference]: Start difference. First operand 41872 states and 68225 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:41:43,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:41:43,978 INFO L93 Difference]: Finished difference Result 146022 states and 239430 transitions. [2022-07-22 19:41:43,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:41:43,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-07-22 19:41:43,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:41:44,473 INFO L225 Difference]: With dead ends: 146022 [2022-07-22 19:41:44,473 INFO L226 Difference]: Without dead ends: 106291 [2022-07-22 19:41:44,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:41:44,595 INFO L413 NwaCegarLoop]: 4762 mSDtfsCounter, 5287 mSDsluCounter, 17458 mSDsCounter, 0 mSdLazyCounter, 2581 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5304 SdHoareTripleChecker+Valid, 22220 SdHoareTripleChecker+Invalid, 2673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:41:44,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5304 Valid, 22220 Invalid, 2673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2581 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 19:41:44,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106291 states. [2022-07-22 19:41:50,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106291 to 81938. [2022-07-22 19:41:50,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81938 states, 75271 states have (on average 1.57186698728594) internal successors, (118316), 75530 states have internal predecessors, (118316), 4873 states have call successors, (4873), 1537 states have call predecessors, (4873), 1792 states have return successors, (11944), 5126 states have call predecessors, (11944), 4871 states have call successors, (11944) [2022-07-22 19:41:50,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81938 states to 81938 states and 135133 transitions. [2022-07-22 19:41:50,622 INFO L78 Accepts]: Start accepts. Automaton has 81938 states and 135133 transitions. Word has length 157 [2022-07-22 19:41:50,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:41:50,623 INFO L495 AbstractCegarLoop]: Abstraction has 81938 states and 135133 transitions. [2022-07-22 19:41:50,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:41:50,623 INFO L276 IsEmpty]: Start isEmpty. Operand 81938 states and 135133 transitions. [2022-07-22 19:41:50,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-22 19:41:50,670 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:41:50,670 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] [2022-07-22 19:41:50,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 19:41:50,671 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:41:50,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:41:50,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1876407600, now seen corresponding path program 1 times [2022-07-22 19:41:50,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:41:50,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72496926] [2022-07-22 19:41:50,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:41:50,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:41:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:50,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:41:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:50,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 19:41:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:50,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 19:41:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:50,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 19:41:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:50,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 19:41:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:50,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:41:50,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:41:50,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72496926] [2022-07-22 19:41:50,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72496926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:41:50,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:41:50,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:41:50,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594114481] [2022-07-22 19:41:50,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:41:50,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:41:50,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:41:50,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:41:50,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:41:50,801 INFO L87 Difference]: Start difference. First operand 81938 states and 135133 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)