./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.08.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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_label49+token_ring.08.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aaf13b6417c3a40bd252c0d41a10a8dacb34259e9c2292b8e82d477fe2508ef5 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:43:23,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:43:23,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:43:24,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:43:24,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:43:24,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:43:24,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:43:24,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:43:24,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:43:24,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:43:24,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:43:24,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:43:24,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:43:24,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:43:24,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:43:24,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:43:24,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:43:24,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:43:24,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:43:24,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:43:24,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:43:24,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:43:24,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:43:24,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:43:24,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:43:24,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:43:24,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:43:24,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:43:24,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:43:24,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:43:24,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:43:24,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:43:24,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:43:24,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:43:24,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:43:24,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:43:24,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:43:24,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:43:24,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:43:24,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:43:24,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:43:24,042 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:43:24,056 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:43:24,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:43:24,056 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:43:24,057 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:43:24,057 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:43:24,057 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:43:24,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:43:24,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:43:24,058 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:43:24,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:43:24,059 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:43:24,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:43:24,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:43:24,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:43:24,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:43:24,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:43:24,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:43:24,060 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:43:24,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:43:24,061 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:43:24,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:43:24,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:43:24,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:43:24,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:43:24,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:43:24,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:43:24,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:43:24,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:43:24,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:43:24,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:43:24,063 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:43:24,063 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:43:24,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:43:24,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:43:24,064 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aaf13b6417c3a40bd252c0d41a10a8dacb34259e9c2292b8e82d477fe2508ef5 [2021-12-22 12:43:24,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:43:24,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:43:24,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:43:24,234 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:43:24,235 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:43:24,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.08.cil-2.c [2021-12-22 12:43:24,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a1a90756/1fb388eb0e814812b8a07bc373ba2d9d/FLAG422b0548d [2021-12-22 12:43:24,925 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:43:24,925 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.08.cil-2.c [2021-12-22 12:43:24,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a1a90756/1fb388eb0e814812b8a07bc373ba2d9d/FLAG422b0548d [2021-12-22 12:43:25,058 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a1a90756/1fb388eb0e814812b8a07bc373ba2d9d [2021-12-22 12:43:25,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:43:25,064 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:43:25,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:43:25,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:43:25,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:43:25,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:43:25" (1/1) ... [2021-12-22 12:43:25,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a8f134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:25, skipping insertion in model container [2021-12-22 12:43:25,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:43:25" (1/1) ... [2021-12-22 12:43:25,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:43:25,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:43:26,516 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_label49+token_ring.08.cil-2.c[380593,380606] [2021-12-22 12:43:26,535 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_label49+token_ring.08.cil-2.c[383339,383352] [2021-12-22 12:43:26,737 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:43:26,748 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:43:27,327 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_label49+token_ring.08.cil-2.c[380593,380606] [2021-12-22 12:43:27,332 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_label49+token_ring.08.cil-2.c[383339,383352] [2021-12-22 12:43:27,351 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:43:27,390 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:43:27,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:27 WrapperNode [2021-12-22 12:43:27,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:43:27,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:43:27,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:43:27,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:43:27,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:27" (1/1) ... [2021-12-22 12:43:27,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:27" (1/1) ... [2021-12-22 12:43:27,767 INFO L137 Inliner]: procedures = 60, calls = 66, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 12972 [2021-12-22 12:43:27,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:43:27,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:43:27,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:43:27,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:43:27,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:27" (1/1) ... [2021-12-22 12:43:27,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:27" (1/1) ... [2021-12-22 12:43:27,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:27" (1/1) ... [2021-12-22 12:43:27,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:27" (1/1) ... [2021-12-22 12:43:27,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:27" (1/1) ... [2021-12-22 12:43:28,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:27" (1/1) ... [2021-12-22 12:43:28,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:27" (1/1) ... [2021-12-22 12:43:28,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:43:28,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:43:28,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:43:28,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:43:28,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:27" (1/1) ... [2021-12-22 12:43:28,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:43:28,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:43:28,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 12:43:28,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 12:43:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:43:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-22 12:43:28,149 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-22 12:43:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-22 12:43:28,149 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-22 12:43:28,149 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-22 12:43:28,150 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-22 12:43:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-22 12:43:28,150 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-22 12:43:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-22 12:43:28,150 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-22 12:43:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-22 12:43:28,150 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-22 12:43:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-22 12:43:28,151 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-22 12:43:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:43:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:43:28,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:43:28,272 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:43:28,273 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:43:32,993 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:43:33,018 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:43:33,019 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-12-22 12:43:33,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:43:33 BoogieIcfgContainer [2021-12-22 12:43:33,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:43:33,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:43:33,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:43:33,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:43:33,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:43:25" (1/3) ... [2021-12-22 12:43:33,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b60aa03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:43:33, skipping insertion in model container [2021-12-22 12:43:33,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:27" (2/3) ... [2021-12-22 12:43:33,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b60aa03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:43:33, skipping insertion in model container [2021-12-22 12:43:33,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:43:33" (3/3) ... [2021-12-22 12:43:33,032 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.08.cil-2.c [2021-12-22 12:43:33,036 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:43:33,036 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 12:43:33,083 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:43:33,088 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 12:43:33,088 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 12:43:33,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 2473 states, 2439 states have (on average 1.848708487084871) internal successors, (4509), 2444 states have internal predecessors, (4509), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-22 12:43:33,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-22 12:43:33,136 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:43:33,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:43:33,137 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:43:33,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:43:33,141 INFO L85 PathProgramCache]: Analyzing trace with hash -970277371, now seen corresponding path program 1 times [2021-12-22 12:43:33,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:43:33,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027995688] [2021-12-22 12:43:33,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:43:33,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:43:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:33,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:43:33,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:33,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 12:43:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:33,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 12:43:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:33,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 12:43:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:33,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 12:43:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:33,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:43:33,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:43:33,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027995688] [2021-12-22 12:43:33,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027995688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:43:33,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:43:33,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:43:33,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643471401] [2021-12-22 12:43:33,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:43:33,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:43:33,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:43:33,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:43:33,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:43:33,573 INFO L87 Difference]: Start difference. First operand has 2473 states, 2439 states have (on average 1.848708487084871) internal successors, (4509), 2444 states have internal predecessors, (4509), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:34,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:43:34,427 INFO L93 Difference]: Finished difference Result 5037 states and 9272 transitions. [2021-12-22 12:43:34,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 12:43:34,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (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 135 [2021-12-22 12:43:34,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:43:34,446 INFO L225 Difference]: With dead ends: 5037 [2021-12-22 12:43:34,447 INFO L226 Difference]: Without dead ends: 2503 [2021-12-22 12:43:34,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:43:34,456 INFO L933 BasicCegarLoop]: 4511 mSDtfsCounter, 748 mSDsluCounter, 12395 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 16906 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 12:43:34,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 16906 Invalid, 551 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 12:43:34,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2021-12-22 12:43:34,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 2405. [2021-12-22 12:43:34,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2373 states have (on average 1.8348082595870205) internal successors, (4354), 2376 states have internal predecessors, (4354), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-22 12:43:34,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 4400 transitions. [2021-12-22 12:43:34,639 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 4400 transitions. Word has length 135 [2021-12-22 12:43:34,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:43:34,639 INFO L470 AbstractCegarLoop]: Abstraction has 2405 states and 4400 transitions. [2021-12-22 12:43:34,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:34,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 4400 transitions. [2021-12-22 12:43:34,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-22 12:43:34,642 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:43:34,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:43:34,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:43:34,643 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:43:34,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:43:34,644 INFO L85 PathProgramCache]: Analyzing trace with hash -540619065, now seen corresponding path program 1 times [2021-12-22 12:43:34,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:43:34,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107763480] [2021-12-22 12:43:34,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:43:34,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:43:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:34,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:43:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:34,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 12:43:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:34,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 12:43:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:34,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 12:43:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:34,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 12:43:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:34,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:43:34,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:43:34,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107763480] [2021-12-22 12:43:34,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107763480] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:43:34,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:43:34,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 12:43:34,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007311693] [2021-12-22 12:43:34,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:43:34,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 12:43:34,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:43:34,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 12:43:34,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 12:43:34,808 INFO L87 Difference]: Start difference. First operand 2405 states and 4400 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:36,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:43:36,413 INFO L93 Difference]: Finished difference Result 3147 states and 5591 transitions. [2021-12-22 12:43:36,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 12:43:36,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (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 135 [2021-12-22 12:43:36,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:43:36,428 INFO L225 Difference]: With dead ends: 3147 [2021-12-22 12:43:36,429 INFO L226 Difference]: Without dead ends: 2879 [2021-12-22 12:43:36,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-22 12:43:36,432 INFO L933 BasicCegarLoop]: 4478 mSDtfsCounter, 5066 mSDsluCounter, 12654 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5081 SdHoareTripleChecker+Valid, 17132 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:43:36,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5081 Valid, 17132 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-22 12:43:36,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2021-12-22 12:43:36,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 2682. [2021-12-22 12:43:36,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2626 states have (on average 1.8111195734958112) internal successors, (4756), 2630 states have internal predecessors, (4756), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2021-12-22 12:43:36,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 4839 transitions. [2021-12-22 12:43:36,500 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 4839 transitions. Word has length 135 [2021-12-22 12:43:36,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:43:36,500 INFO L470 AbstractCegarLoop]: Abstraction has 2682 states and 4839 transitions. [2021-12-22 12:43:36,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:36,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 4839 transitions. [2021-12-22 12:43:36,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-22 12:43:36,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:43:36,502 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:43:36,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:43:36,502 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:43:36,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:43:36,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1902621501, now seen corresponding path program 1 times [2021-12-22 12:43:36,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:43:36,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976913037] [2021-12-22 12:43:36,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:43:36,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:43:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:36,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:43:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:36,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 12:43:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:36,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 12:43:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:36,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 12:43:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:36,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 12:43:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:36,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:43:36,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:43:36,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976913037] [2021-12-22 12:43:36,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976913037] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:43:36,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:43:36,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:43:36,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351710410] [2021-12-22 12:43:36,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:43:36,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:43:36,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:43:36,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:43:36,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:43:36,663 INFO L87 Difference]: Start difference. First operand 2682 states and 4839 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:38,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:43:38,763 INFO L93 Difference]: Finished difference Result 3810 states and 6649 transitions. [2021-12-22 12:43:38,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:43:38,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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 135 [2021-12-22 12:43:38,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:43:38,776 INFO L225 Difference]: With dead ends: 3810 [2021-12-22 12:43:38,776 INFO L226 Difference]: Without dead ends: 3265 [2021-12-22 12:43:38,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:43:38,781 INFO L933 BasicCegarLoop]: 4701 mSDtfsCounter, 5078 mSDsluCounter, 17330 mSDsCounter, 0 mSdLazyCounter, 2177 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5093 SdHoareTripleChecker+Valid, 22031 SdHoareTripleChecker+Invalid, 2249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-22 12:43:38,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5093 Valid, 22031 Invalid, 2249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2177 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-22 12:43:38,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2021-12-22 12:43:38,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 2940. [2021-12-22 12:43:38,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2940 states, 2860 states have (on average 1.7902097902097902) internal successors, (5120), 2865 states have internal predecessors, (5120), 58 states have call successors, (58), 19 states have call predecessors, (58), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2021-12-22 12:43:38,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 5239 transitions. [2021-12-22 12:43:38,869 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 5239 transitions. Word has length 135 [2021-12-22 12:43:38,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:43:38,869 INFO L470 AbstractCegarLoop]: Abstraction has 2940 states and 5239 transitions. [2021-12-22 12:43:38,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:38,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 5239 transitions. [2021-12-22 12:43:38,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-22 12:43:38,871 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:43:38,871 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:43:38,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 12:43:38,872 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:43:38,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:43:38,872 INFO L85 PathProgramCache]: Analyzing trace with hash 26310725, now seen corresponding path program 1 times [2021-12-22 12:43:38,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:43:38,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281793725] [2021-12-22 12:43:38,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:43:38,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:43:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:38,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:43:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:38,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 12:43:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:38,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 12:43:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:38,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 12:43:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:38,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 12:43:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:38,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:43:38,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:43:38,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281793725] [2021-12-22 12:43:38,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281793725] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:43:38,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:43:38,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:43:38,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97858411] [2021-12-22 12:43:38,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:43:38,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:43:38,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:43:38,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:43:38,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:43:38,978 INFO L87 Difference]: Start difference. First operand 2940 states and 5239 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:40,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:43:40,852 INFO L93 Difference]: Finished difference Result 4787 states and 8197 transitions. [2021-12-22 12:43:40,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:43:40,852 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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 135 [2021-12-22 12:43:40,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:43:40,866 INFO L225 Difference]: With dead ends: 4787 [2021-12-22 12:43:40,867 INFO L226 Difference]: Without dead ends: 3984 [2021-12-22 12:43:40,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:43:40,871 INFO L933 BasicCegarLoop]: 4506 mSDtfsCounter, 5157 mSDsluCounter, 16833 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 21339 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-22 12:43:40,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5172 Valid, 21339 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-22 12:43:40,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2021-12-22 12:43:40,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 3457. [2021-12-22 12:43:40,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3457 states, 3329 states have (on average 1.756984079303094) internal successors, (5849), 3336 states have internal predecessors, (5849), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2021-12-22 12:43:40,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3457 states to 3457 states and 6044 transitions. [2021-12-22 12:43:40,964 INFO L78 Accepts]: Start accepts. Automaton has 3457 states and 6044 transitions. Word has length 135 [2021-12-22 12:43:40,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:43:40,968 INFO L470 AbstractCegarLoop]: Abstraction has 3457 states and 6044 transitions. [2021-12-22 12:43:40,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:40,969 INFO L276 IsEmpty]: Start isEmpty. Operand 3457 states and 6044 transitions. [2021-12-22 12:43:40,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-22 12:43:40,973 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:43:40,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:43:40,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 12:43:40,974 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:43:40,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:43:40,974 INFO L85 PathProgramCache]: Analyzing trace with hash 2028196995, now seen corresponding path program 1 times [2021-12-22 12:43:40,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:43:40,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090784505] [2021-12-22 12:43:40,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:43:40,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:43:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:40,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:43:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:41,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 12:43:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:41,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 12:43:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:41,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 12:43:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:41,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 12:43:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:41,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:43:41,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:43:41,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090784505] [2021-12-22 12:43:41,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090784505] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:43:41,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:43:41,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:43:41,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482143094] [2021-12-22 12:43:41,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:43:41,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:43:41,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:43:41,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:43:41,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:43:41,070 INFO L87 Difference]: Start difference. First operand 3457 states and 6044 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:43,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:43:43,002 INFO L93 Difference]: Finished difference Result 6668 states and 11162 transitions. [2021-12-22 12:43:43,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:43:43,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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 135 [2021-12-22 12:43:43,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:43:43,021 INFO L225 Difference]: With dead ends: 6668 [2021-12-22 12:43:43,021 INFO L226 Difference]: Without dead ends: 5348 [2021-12-22 12:43:43,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:43:43,028 INFO L933 BasicCegarLoop]: 4689 mSDtfsCounter, 5073 mSDsluCounter, 17326 mSDsCounter, 0 mSdLazyCounter, 2180 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5088 SdHoareTripleChecker+Valid, 22015 SdHoareTripleChecker+Invalid, 2257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-22 12:43:43,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5088 Valid, 22015 Invalid, 2257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2180 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-22 12:43:43,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5348 states. [2021-12-22 12:43:43,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5348 to 4492. [2021-12-22 12:43:43,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4492 states, 4268 states have (on average 1.7120431115276475) internal successors, (7307), 4279 states have internal predecessors, (7307), 160 states have call successors, (160), 55 states have call predecessors, (160), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2021-12-22 12:43:43,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4492 states to 4492 states and 7660 transitions. [2021-12-22 12:43:43,213 INFO L78 Accepts]: Start accepts. Automaton has 4492 states and 7660 transitions. Word has length 135 [2021-12-22 12:43:43,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:43:43,213 INFO L470 AbstractCegarLoop]: Abstraction has 4492 states and 7660 transitions. [2021-12-22 12:43:43,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:43,214 INFO L276 IsEmpty]: Start isEmpty. Operand 4492 states and 7660 transitions. [2021-12-22 12:43:43,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-22 12:43:43,216 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:43:43,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:43:43,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 12:43:43,217 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:43:43,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:43:43,217 INFO L85 PathProgramCache]: Analyzing trace with hash -539625339, now seen corresponding path program 1 times [2021-12-22 12:43:43,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:43:43,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593403708] [2021-12-22 12:43:43,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:43:43,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:43:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:43,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:43:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:43,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 12:43:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:43,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 12:43:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:43,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 12:43:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:43,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 12:43:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:43,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:43:43,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:43:43,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593403708] [2021-12-22 12:43:43,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593403708] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:43:43,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:43:43,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:43:43,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739791170] [2021-12-22 12:43:43,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:43:43,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:43:43,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:43:43,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:43:43,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:43:43,304 INFO L87 Difference]: Start difference. First operand 4492 states and 7660 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:45,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:43:45,257 INFO L93 Difference]: Finished difference Result 10422 states and 17096 transitions. [2021-12-22 12:43:45,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:43:45,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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 135 [2021-12-22 12:43:45,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:43:45,286 INFO L225 Difference]: With dead ends: 10422 [2021-12-22 12:43:45,287 INFO L226 Difference]: Without dead ends: 8067 [2021-12-22 12:43:45,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:43:45,299 INFO L933 BasicCegarLoop]: 4681 mSDtfsCounter, 5068 mSDsluCounter, 17326 mSDsCounter, 0 mSdLazyCounter, 2160 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5083 SdHoareTripleChecker+Valid, 22007 SdHoareTripleChecker+Invalid, 2238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:43:45,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5083 Valid, 22007 Invalid, 2238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2160 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-22 12:43:45,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8067 states. [2021-12-22 12:43:45,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8067 to 6576. [2021-12-22 12:43:45,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6576 states, 6160 states have (on average 1.663474025974026) internal successors, (10247), 6179 states have internal predecessors, (10247), 296 states have call successors, (296), 103 states have call predecessors, (296), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2021-12-22 12:43:45,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6576 states to 6576 states and 10934 transitions. [2021-12-22 12:43:45,531 INFO L78 Accepts]: Start accepts. Automaton has 6576 states and 10934 transitions. Word has length 135 [2021-12-22 12:43:45,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:43:45,532 INFO L470 AbstractCegarLoop]: Abstraction has 6576 states and 10934 transitions. [2021-12-22 12:43:45,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:45,533 INFO L276 IsEmpty]: Start isEmpty. Operand 6576 states and 10934 transitions. [2021-12-22 12:43:45,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-22 12:43:45,536 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:43:45,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:43:45,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 12:43:45,537 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:43:45,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:43:45,537 INFO L85 PathProgramCache]: Analyzing trace with hash 2107979015, now seen corresponding path program 1 times [2021-12-22 12:43:45,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:43:45,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724042377] [2021-12-22 12:43:45,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:43:45,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:43:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:45,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:43:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:45,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 12:43:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:45,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 12:43:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:45,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 12:43:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:45,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 12:43:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:45,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:43:45,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:43:45,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724042377] [2021-12-22 12:43:45,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724042377] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:43:45,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:43:45,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:43:45,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033497162] [2021-12-22 12:43:45,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:43:45,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:43:45,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:43:45,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:43:45,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:43:45,666 INFO L87 Difference]: Start difference. First operand 6576 states and 10934 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:47,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:43:47,798 INFO L93 Difference]: Finished difference Result 17948 states and 29056 transitions. [2021-12-22 12:43:47,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:43:47,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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 135 [2021-12-22 12:43:47,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:43:47,839 INFO L225 Difference]: With dead ends: 17948 [2021-12-22 12:43:47,840 INFO L226 Difference]: Without dead ends: 13509 [2021-12-22 12:43:47,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:43:47,856 INFO L933 BasicCegarLoop]: 4676 mSDtfsCounter, 5067 mSDsluCounter, 17326 mSDsCounter, 0 mSdLazyCounter, 2152 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5082 SdHoareTripleChecker+Valid, 22002 SdHoareTripleChecker+Invalid, 2230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:43:47,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5082 Valid, 22002 Invalid, 2230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2152 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-22 12:43:47,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13509 states. [2021-12-22 12:43:48,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13509 to 10757. [2021-12-22 12:43:48,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10757 states, 9957 states have (on average 1.6214723310234007) internal successors, (16145), 9992 states have internal predecessors, (16145), 568 states have call successors, (568), 199 states have call predecessors, (568), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2021-12-22 12:43:48,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10757 states to 10757 states and 17554 transitions. [2021-12-22 12:43:48,343 INFO L78 Accepts]: Start accepts. Automaton has 10757 states and 17554 transitions. Word has length 135 [2021-12-22 12:43:48,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:43:48,344 INFO L470 AbstractCegarLoop]: Abstraction has 10757 states and 17554 transitions. [2021-12-22 12:43:48,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:48,344 INFO L276 IsEmpty]: Start isEmpty. Operand 10757 states and 17554 transitions. [2021-12-22 12:43:48,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-22 12:43:48,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:43:48,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:43:48,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 12:43:48,351 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:43:48,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:43:48,352 INFO L85 PathProgramCache]: Analyzing trace with hash -23371707, now seen corresponding path program 1 times [2021-12-22 12:43:48,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:43:48,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572509391] [2021-12-22 12:43:48,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:43:48,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:43:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:48,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:43:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:48,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 12:43:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:48,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 12:43:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:48,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 12:43:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:48,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 12:43:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:48,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:43:48,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:43:48,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572509391] [2021-12-22 12:43:48,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572509391] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:43:48,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:43:48,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:43:48,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579813739] [2021-12-22 12:43:48,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:43:48,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:43:48,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:43:48,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:43:48,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:43:48,473 INFO L87 Difference]: Start difference. First operand 10757 states and 17554 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:49,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:43:49,789 INFO L93 Difference]: Finished difference Result 22268 states and 36159 transitions. [2021-12-22 12:43:49,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 12:43:49,790 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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 135 [2021-12-22 12:43:49,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:43:49,831 INFO L225 Difference]: With dead ends: 22268 [2021-12-22 12:43:49,832 INFO L226 Difference]: Without dead ends: 13648 [2021-12-22 12:43:49,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-22 12:43:49,859 INFO L933 BasicCegarLoop]: 4410 mSDtfsCounter, 4885 mSDsluCounter, 12435 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4901 SdHoareTripleChecker+Valid, 16845 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 12:43:49,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4901 Valid, 16845 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 12:43:49,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13648 states. [2021-12-22 12:43:50,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13648 to 10757. [2021-12-22 12:43:50,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10757 states, 9957 states have (on average 1.6181580797428945) internal successors, (16112), 9992 states have internal predecessors, (16112), 568 states have call successors, (568), 199 states have call predecessors, (568), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2021-12-22 12:43:50,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10757 states to 10757 states and 17521 transitions. [2021-12-22 12:43:50,375 INFO L78 Accepts]: Start accepts. Automaton has 10757 states and 17521 transitions. Word has length 135 [2021-12-22 12:43:50,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:43:50,376 INFO L470 AbstractCegarLoop]: Abstraction has 10757 states and 17521 transitions. [2021-12-22 12:43:50,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:50,376 INFO L276 IsEmpty]: Start isEmpty. Operand 10757 states and 17521 transitions. [2021-12-22 12:43:50,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-22 12:43:50,382 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:43:50,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:43:50,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 12:43:50,383 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:43:50,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:43:50,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1061956281, now seen corresponding path program 1 times [2021-12-22 12:43:50,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:43:50,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519955662] [2021-12-22 12:43:50,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:43:50,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:43:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:50,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:43:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:50,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 12:43:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:50,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 12:43:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:50,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 12:43:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:50,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 12:43:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:50,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:43:50,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:43:50,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519955662] [2021-12-22 12:43:50,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519955662] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:43:50,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:43:50,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:43:50,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433318885] [2021-12-22 12:43:50,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:43:50,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:43:50,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:43:50,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:43:50,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:43:50,486 INFO L87 Difference]: Start difference. First operand 10757 states and 17521 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:53,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:43:53,100 INFO L93 Difference]: Finished difference Result 32965 states and 52934 transitions. [2021-12-22 12:43:53,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:43:53,101 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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 135 [2021-12-22 12:43:53,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:43:53,169 INFO L225 Difference]: With dead ends: 32965 [2021-12-22 12:43:53,169 INFO L226 Difference]: Without dead ends: 24345 [2021-12-22 12:43:53,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:43:53,197 INFO L933 BasicCegarLoop]: 4665 mSDtfsCounter, 5059 mSDsluCounter, 17326 mSDsCounter, 0 mSdLazyCounter, 2125 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5074 SdHoareTripleChecker+Valid, 21991 SdHoareTripleChecker+Invalid, 2203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:43:53,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5074 Valid, 21991 Invalid, 2203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2125 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-22 12:43:53,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24345 states. [2021-12-22 12:43:53,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24345 to 19183. [2021-12-22 12:43:53,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19183 states, 17615 states have (on average 1.587056485949475) internal successors, (27956), 17682 states have internal predecessors, (27956), 1112 states have call successors, (1112), 391 states have call predecessors, (1112), 454 states have return successors, (1903), 1173 states have call predecessors, (1903), 1110 states have call successors, (1903) [2021-12-22 12:43:54,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19183 states to 19183 states and 30971 transitions. [2021-12-22 12:43:54,034 INFO L78 Accepts]: Start accepts. Automaton has 19183 states and 30971 transitions. Word has length 135 [2021-12-22 12:43:54,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:43:54,034 INFO L470 AbstractCegarLoop]: Abstraction has 19183 states and 30971 transitions. [2021-12-22 12:43:54,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:54,035 INFO L276 IsEmpty]: Start isEmpty. Operand 19183 states and 30971 transitions. [2021-12-22 12:43:54,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-22 12:43:54,047 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:43:54,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:43:54,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 12:43:54,048 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:43:54,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:43:54,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1259845637, now seen corresponding path program 1 times [2021-12-22 12:43:54,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:43:54,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248350331] [2021-12-22 12:43:54,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:43:54,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:43:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:54,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:43:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:54,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 12:43:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:54,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 12:43:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:54,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 12:43:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:54,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 12:43:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:43:54,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:43:54,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:43:54,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248350331] [2021-12-22 12:43:54,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248350331] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:43:54,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:43:54,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:43:54,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722931901] [2021-12-22 12:43:54,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:43:54,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:43:54,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:43:54,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:43:54,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:43:54,234 INFO L87 Difference]: Start difference. First operand 19183 states and 30971 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:43:58,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:43:58,989 INFO L93 Difference]: Finished difference Result 70813 states and 113344 transitions. [2021-12-22 12:43:58,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:43:58,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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 135 [2021-12-22 12:43:58,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:43:59,168 INFO L225 Difference]: With dead ends: 70813 [2021-12-22 12:43:59,170 INFO L226 Difference]: Without dead ends: 53767 [2021-12-22 12:43:59,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 12:43:59,218 INFO L933 BasicCegarLoop]: 4658 mSDtfsCounter, 5388 mSDsluCounter, 17318 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5412 SdHoareTripleChecker+Valid, 21976 SdHoareTripleChecker+Invalid, 2193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-22 12:43:59,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5412 Valid, 21976 Invalid, 2193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2110 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-22 12:43:59,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53767 states. [2021-12-22 12:44:01,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53767 to 35904. [2021-12-22 12:44:01,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35904 states, 32864 states have (on average 1.5702896786757545) internal successors, (51606), 32995 states have internal predecessors, (51606), 2136 states have call successors, (2136), 775 states have call predecessors, (2136), 902 states have return successors, (4449), 2261 states have call predecessors, (4449), 2134 states have call successors, (4449) [2021-12-22 12:44:01,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35904 states to 35904 states and 58191 transitions. [2021-12-22 12:44:01,196 INFO L78 Accepts]: Start accepts. Automaton has 35904 states and 58191 transitions. Word has length 135 [2021-12-22 12:44:01,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:44:01,197 INFO L470 AbstractCegarLoop]: Abstraction has 35904 states and 58191 transitions. [2021-12-22 12:44:01,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:01,197 INFO L276 IsEmpty]: Start isEmpty. Operand 35904 states and 58191 transitions. [2021-12-22 12:44:01,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-22 12:44:01,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:01,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:01,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 12:44:01,215 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:01,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:01,216 INFO L85 PathProgramCache]: Analyzing trace with hash -882014841, now seen corresponding path program 1 times [2021-12-22 12:44:01,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:44:01,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216355323] [2021-12-22 12:44:01,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:01,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:44:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:01,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:44:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:01,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 12:44:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:01,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 12:44:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:01,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 12:44:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:01,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 12:44:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:01,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:44:01,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:44:01,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216355323] [2021-12-22 12:44:01,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216355323] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:44:01,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:44:01,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:44:01,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401860800] [2021-12-22 12:44:01,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:44:01,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:44:01,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:44:01,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:44:01,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:44:01,314 INFO L87 Difference]: Start difference. First operand 35904 states and 58191 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:10,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:44:10,196 INFO L93 Difference]: Finished difference Result 136652 states and 221030 transitions. [2021-12-22 12:44:10,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:44:10,197 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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 135 [2021-12-22 12:44:10,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:44:10,575 INFO L225 Difference]: With dead ends: 136652 [2021-12-22 12:44:10,575 INFO L226 Difference]: Without dead ends: 102885 [2021-12-22 12:44:10,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 12:44:10,661 INFO L933 BasicCegarLoop]: 4615 mSDtfsCounter, 5197 mSDsluCounter, 16853 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5211 SdHoareTripleChecker+Valid, 21468 SdHoareTripleChecker+Invalid, 2370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-22 12:44:10,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5211 Valid, 21468 Invalid, 2370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-22 12:44:10,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102885 states. [2021-12-22 12:44:14,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102885 to 68001. [2021-12-22 12:44:14,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68001 states, 62081 states have (on average 1.5570625473172146) internal successors, (96664), 62340 states have internal predecessors, (96664), 4120 states have call successors, (4120), 1543 states have call predecessors, (4120), 1798 states have return successors, (10935), 4373 states have call predecessors, (10935), 4118 states have call successors, (10935) [2021-12-22 12:44:15,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68001 states to 68001 states and 111719 transitions. [2021-12-22 12:44:15,052 INFO L78 Accepts]: Start accepts. Automaton has 68001 states and 111719 transitions. Word has length 135 [2021-12-22 12:44:15,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:44:15,053 INFO L470 AbstractCegarLoop]: Abstraction has 68001 states and 111719 transitions. [2021-12-22 12:44:15,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:44:15,053 INFO L276 IsEmpty]: Start isEmpty. Operand 68001 states and 111719 transitions. [2021-12-22 12:44:15,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-22 12:44:15,086 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:44:15,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:44:15,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 12:44:15,087 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:44:15,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:44:15,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1505296443, now seen corresponding path program 1 times [2021-12-22 12:44:15,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:44:15,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593879676] [2021-12-22 12:44:15,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:44:15,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:44:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:15,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:44:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:15,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 12:44:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:15,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 12:44:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:15,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 12:44:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:15,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 12:44:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:44:15,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:44:15,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:44:15,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593879676] [2021-12-22 12:44:15,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593879676] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:44:15,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:44:15,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:44:15,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147877197] [2021-12-22 12:44:15,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:44:15,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:44:15,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:44:15,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:44:15,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:44:15,177 INFO L87 Difference]: Start difference. First operand 68001 states and 111719 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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)