./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.07.cil-1.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_label45+token_ring.07.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b4c883892095e0f755900dfa24a6bc793b8370cf6ff9d1a6368a9f789f01f5b0 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:37:30,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:37:30,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:37:31,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:37:31,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:37:31,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:37:31,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:37:31,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:37:31,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:37:31,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:37:31,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:37:31,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:37:31,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:37:31,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:37:31,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:37:31,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:37:31,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:37:31,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:37:31,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:37:31,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:37:31,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:37:31,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:37:31,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:37:31,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:37:31,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:37:31,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:37:31,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:37:31,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:37:31,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:37:31,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:37:31,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:37:31,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:37:31,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:37:31,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:37:31,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:37:31,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:37:31,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:37:31,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:37:31,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:37:31,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:37:31,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:37:31,077 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:37:31,094 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:37:31,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:37:31,094 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:37:31,094 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:37:31,095 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:37:31,095 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:37:31,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:37:31,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:37:31,096 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:37:31,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:37:31,096 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:37:31,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:37:31,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:37:31,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:37:31,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:37:31,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:37:31,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:37:31,097 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:37:31,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:37:31,097 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:37:31,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:37:31,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:37:31,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:37:31,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:37:31,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:37:31,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:37:31,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:37:31,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:37:31,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:37:31,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:37:31,099 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:37:31,099 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:37:31,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:37:31,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:37:31,100 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4c883892095e0f755900dfa24a6bc793b8370cf6ff9d1a6368a9f789f01f5b0 [2021-12-22 12:37:31,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:37:31,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:37:31,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:37:31,264 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:37:31,264 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:37:31,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.07.cil-1.c [2021-12-22 12:37:31,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4665389e2/0f3c1cc5ac2b46ca8d81cd7142ffdfe3/FLAGf79f1c4a9 [2021-12-22 12:37:32,006 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:37:32,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.07.cil-1.c [2021-12-22 12:37:32,046 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4665389e2/0f3c1cc5ac2b46ca8d81cd7142ffdfe3/FLAGf79f1c4a9 [2021-12-22 12:37:32,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4665389e2/0f3c1cc5ac2b46ca8d81cd7142ffdfe3 [2021-12-22 12:37:32,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:37:32,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:37:32,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:37:32,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:37:32,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:37:32,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:37:32" (1/1) ... [2021-12-22 12:37:32,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605dd6b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:37:32, skipping insertion in model container [2021-12-22 12:37:32,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:37:32" (1/1) ... [2021-12-22 12:37:32,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:37:32,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:37:33,532 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_label45+token_ring.07.cil-1.c[380323,380336] [2021-12-22 12:37:33,556 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_label45+token_ring.07.cil-1.c[383339,383352] [2021-12-22 12:37:33,747 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:37:33,754 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:37:34,351 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_label45+token_ring.07.cil-1.c[380323,380336] [2021-12-22 12:37:34,355 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_label45+token_ring.07.cil-1.c[383339,383352] [2021-12-22 12:37:34,375 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:37:34,413 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:37:34,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:37:34 WrapperNode [2021-12-22 12:37:34,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:37:34,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:37:34,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:37:34,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:37:34,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:37:34" (1/1) ... [2021-12-22 12:37:34,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:37:34" (1/1) ... [2021-12-22 12:37:34,681 INFO L137 Inliner]: procedures = 58, calls = 62, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 12909 [2021-12-22 12:37:34,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:37:34,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:37:34,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:37:34,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:37:34,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:37:34" (1/1) ... [2021-12-22 12:37:34,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:37:34" (1/1) ... [2021-12-22 12:37:34,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:37:34" (1/1) ... [2021-12-22 12:37:34,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:37:34" (1/1) ... [2021-12-22 12:37:34,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:37:34" (1/1) ... [2021-12-22 12:37:34,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:37:34" (1/1) ... [2021-12-22 12:37:34,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:37:34" (1/1) ... [2021-12-22 12:37:34,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:37:34,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:37:34,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:37:34,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:37:34,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:37:34" (1/1) ... [2021-12-22 12:37:35,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:37:35,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:37:35,017 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 12:37:35,022 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 12:37:35,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:37:35,045 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-22 12:37:35,045 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-22 12:37:35,045 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-22 12:37:35,045 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-22 12:37:35,045 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-22 12:37:35,045 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-22 12:37:35,045 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-22 12:37:35,046 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-22 12:37:35,046 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-22 12:37:35,046 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-22 12:37:35,046 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-22 12:37:35,046 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-22 12:37:35,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:37:35,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:37:35,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:37:35,164 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:37:35,165 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:37:40,116 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:37:40,133 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:37:40,134 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-22 12:37:40,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:37:40 BoogieIcfgContainer [2021-12-22 12:37:40,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:37:40,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:37:40,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:37:40,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:37:40,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:37:32" (1/3) ... [2021-12-22 12:37:40,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1b5504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:37:40, skipping insertion in model container [2021-12-22 12:37:40,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:37:34" (2/3) ... [2021-12-22 12:37:40,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1b5504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:37:40, skipping insertion in model container [2021-12-22 12:37:40,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:37:40" (3/3) ... [2021-12-22 12:37:40,142 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.07.cil-1.c [2021-12-22 12:37:40,145 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:37:40,146 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 12:37:40,183 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:37:40,187 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 12:37:40,188 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 12:37:40,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-22 12:37:40,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-22 12:37:40,260 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:37:40,260 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] [2021-12-22 12:37:40,261 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:37:40,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:37:40,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1176565078, now seen corresponding path program 1 times [2021-12-22 12:37:40,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:37:40,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102117716] [2021-12-22 12:37:40,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:37:40,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:37:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:40,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:37:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:40,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 12:37:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:40,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 12:37:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:40,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:37:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:40,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 12:37:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:40,657 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 12:37:40,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:37:40,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102117716] [2021-12-22 12:37:40,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102117716] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:37:40,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:37:40,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:37:40,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849166380] [2021-12-22 12:37:40,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:37:40,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:37:40,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:37:40,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:37:40,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:37:40,691 INFO L87 Difference]: Start difference. First operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:37:41,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:37:41,616 INFO L93 Difference]: Finished difference Result 4955 states and 9127 transitions. [2021-12-22 12:37:41,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 12:37:41,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-22 12:37:41,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:37:41,640 INFO L225 Difference]: With dead ends: 4955 [2021-12-22 12:37:41,641 INFO L226 Difference]: Without dead ends: 2460 [2021-12-22 12:37:41,650 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 12:37:41,653 INFO L933 BasicCegarLoop]: 4453 mSDtfsCounter, 653 mSDsluCounter, 12350 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 16803 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 12:37:41,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 16803 Invalid, 493 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 12:37:41,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-12-22 12:37:41,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2373. [2021-12-22 12:37:41,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 2344 states have (on average 1.83660409556314) internal successors, (4305), 2346 states have internal predecessors, (4305), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-22 12:37:41,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 4347 transitions. [2021-12-22 12:37:41,773 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 4347 transitions. Word has length 123 [2021-12-22 12:37:41,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:37:41,774 INFO L470 AbstractCegarLoop]: Abstraction has 2373 states and 4347 transitions. [2021-12-22 12:37:41,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:37:41,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 4347 transitions. [2021-12-22 12:37:41,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-22 12:37:41,781 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:37:41,781 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] [2021-12-22 12:37:41,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:37:41,782 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:37:41,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:37:41,784 INFO L85 PathProgramCache]: Analyzing trace with hash 796600300, now seen corresponding path program 1 times [2021-12-22 12:37:41,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:37:41,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106371844] [2021-12-22 12:37:41,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:37:41,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:37:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:41,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:37:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:41,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 12:37:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:41,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 12:37:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:41,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:37:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:41,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 12:37:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:41,993 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 12:37:41,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:37:41,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106371844] [2021-12-22 12:37:41,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106371844] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:37:41,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:37:41,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 12:37:41,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262180791] [2021-12-22 12:37:41,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:37:41,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 12:37:41,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:37:41,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 12:37:42,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 12:37:42,000 INFO L87 Difference]: Start difference. First operand 2373 states and 4347 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:37:43,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:37:43,441 INFO L93 Difference]: Finished difference Result 3029 states and 5394 transitions. [2021-12-22 12:37:43,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 12:37:43,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-22 12:37:43,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:37:43,451 INFO L225 Difference]: With dead ends: 3029 [2021-12-22 12:37:43,467 INFO L226 Difference]: Without dead ends: 2792 [2021-12-22 12:37:43,470 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 12:37:43,471 INFO L933 BasicCegarLoop]: 4416 mSDtfsCounter, 4935 mSDsluCounter, 12550 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 16966 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:37:43,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4949 Valid, 16966 Invalid, 1334 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 12:37:43,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2021-12-22 12:37:43,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2619. [2021-12-22 12:37:43,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8137904168289833) internal successors, (4656), 2570 states have internal predecessors, (4656), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2021-12-22 12:37:43,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4733 transitions. [2021-12-22 12:37:43,611 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4733 transitions. Word has length 123 [2021-12-22 12:37:43,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:37:43,612 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4733 transitions. [2021-12-22 12:37:43,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:37:43,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4733 transitions. [2021-12-22 12:37:43,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-22 12:37:43,613 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:37:43,614 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] [2021-12-22 12:37:43,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:37:43,614 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:37:43,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:37:43,614 INFO L85 PathProgramCache]: Analyzing trace with hash 71036272, now seen corresponding path program 1 times [2021-12-22 12:37:43,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:37:43,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102217272] [2021-12-22 12:37:43,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:37:43,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:37:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:43,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:37:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:43,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 12:37:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:43,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 12:37:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:43,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:37:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:43,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 12:37:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:43,717 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 12:37:43,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:37:43,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102217272] [2021-12-22 12:37:43,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102217272] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:37:43,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:37:43,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:37:43,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616563983] [2021-12-22 12:37:43,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:37:43,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:37:43,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:37:43,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:37:43,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:37:43,720 INFO L87 Difference]: Start difference. First operand 2619 states and 4733 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:37:45,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:37:45,338 INFO L93 Difference]: Finished difference Result 3617 states and 6323 transitions. [2021-12-22 12:37:45,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:37:45,339 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-22 12:37:45,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:37:45,349 INFO L225 Difference]: With dead ends: 3617 [2021-12-22 12:37:45,350 INFO L226 Difference]: Without dead ends: 3134 [2021-12-22 12:37:45,351 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 12:37:45,352 INFO L933 BasicCegarLoop]: 4607 mSDtfsCounter, 4944 mSDsluCounter, 17116 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4958 SdHoareTripleChecker+Valid, 21723 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:37:45,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4958 Valid, 21723 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-22 12:37:45,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2021-12-22 12:37:45,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 2848. [2021-12-22 12:37:45,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2848 states, 2773 states have (on average 1.7933645870897945) internal successors, (4973), 2777 states have internal predecessors, (4973), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2021-12-22 12:37:45,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 5084 transitions. [2021-12-22 12:37:45,417 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 5084 transitions. Word has length 123 [2021-12-22 12:37:45,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:37:45,418 INFO L470 AbstractCegarLoop]: Abstraction has 2848 states and 5084 transitions. [2021-12-22 12:37:45,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:37:45,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 5084 transitions. [2021-12-22 12:37:45,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-22 12:37:45,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:37:45,420 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] [2021-12-22 12:37:45,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 12:37:45,420 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:37:45,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:37:45,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1460330286, now seen corresponding path program 1 times [2021-12-22 12:37:45,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:37:45,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210798179] [2021-12-22 12:37:45,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:37:45,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:37:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:45,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:37:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:45,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 12:37:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:45,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 12:37:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:45,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:37:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:45,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 12:37:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:45,519 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 12:37:45,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:37:45,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210798179] [2021-12-22 12:37:45,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210798179] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:37:45,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:37:45,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:37:45,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323760011] [2021-12-22 12:37:45,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:37:45,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:37:45,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:37:45,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:37:45,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:37:45,567 INFO L87 Difference]: Start difference. First operand 2848 states and 5084 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:37:46,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:37:46,818 INFO L93 Difference]: Finished difference Result 4483 states and 7682 transitions. [2021-12-22 12:37:46,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:37:46,822 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-22 12:37:46,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:37:46,848 INFO L225 Difference]: With dead ends: 4483 [2021-12-22 12:37:46,863 INFO L226 Difference]: Without dead ends: 3771 [2021-12-22 12:37:46,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:37:46,876 INFO L933 BasicCegarLoop]: 4599 mSDtfsCounter, 4941 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1951 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4955 SdHoareTripleChecker+Valid, 21711 SdHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:37:46,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4955 Valid, 21711 Invalid, 2019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1951 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 12:37:46,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3771 states. [2021-12-22 12:37:47,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3771 to 3307. [2021-12-22 12:37:47,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3307 states, 3186 states have (on average 1.7602008788449466) internal successors, (5608), 3192 states have internal predecessors, (5608), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2021-12-22 12:37:47,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3307 states to 3307 states and 5791 transitions. [2021-12-22 12:37:47,022 INFO L78 Accepts]: Start accepts. Automaton has 3307 states and 5791 transitions. Word has length 123 [2021-12-22 12:37:47,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:37:47,022 INFO L470 AbstractCegarLoop]: Abstraction has 3307 states and 5791 transitions. [2021-12-22 12:37:47,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:37:47,022 INFO L276 IsEmpty]: Start isEmpty. Operand 3307 states and 5791 transitions. [2021-12-22 12:37:47,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-22 12:37:47,024 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:37:47,024 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] [2021-12-22 12:37:47,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 12:37:47,024 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:37:47,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:37:47,025 INFO L85 PathProgramCache]: Analyzing trace with hash -573063760, now seen corresponding path program 1 times [2021-12-22 12:37:47,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:37:47,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032613073] [2021-12-22 12:37:47,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:37:47,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:37:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:47,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:37:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:47,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 12:37:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:47,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 12:37:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:47,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:37:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:47,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 12:37:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:37:47,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:37:47,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032613073] [2021-12-22 12:37:47,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032613073] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:37:47,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:37:47,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:37:47,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033234642] [2021-12-22 12:37:47,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:37:47,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:37:47,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:37:47,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:37:47,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:37:47,107 INFO L87 Difference]: Start difference. First operand 3307 states and 5791 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:37:48,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:37:48,558 INFO L93 Difference]: Finished difference Result 6150 states and 10285 transitions. [2021-12-22 12:37:48,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:37:48,558 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-22 12:37:48,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:37:48,581 INFO L225 Difference]: With dead ends: 6150 [2021-12-22 12:37:48,581 INFO L226 Difference]: Without dead ends: 4979 [2021-12-22 12:37:48,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:37:48,590 INFO L933 BasicCegarLoop]: 4595 mSDtfsCounter, 4937 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4951 SdHoareTripleChecker+Valid, 21707 SdHoareTripleChecker+Invalid, 2014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:37:48,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4951 Valid, 21707 Invalid, 2014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1946 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 12:37:48,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2021-12-22 12:37:48,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 4226. [2021-12-22 12:37:48,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4226 states, 4013 states have (on average 1.7139297283827561) internal successors, (6878), 4023 states have internal predecessors, (6878), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-12-22 12:37:48,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 7211 transitions. [2021-12-22 12:37:48,729 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 7211 transitions. Word has length 123 [2021-12-22 12:37:48,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:37:48,729 INFO L470 AbstractCegarLoop]: Abstraction has 4226 states and 7211 transitions. [2021-12-22 12:37:48,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:37:48,730 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 7211 transitions. [2021-12-22 12:37:48,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-22 12:37:48,732 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:37:48,732 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] [2021-12-22 12:37:48,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 12:37:48,732 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:37:48,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:37:48,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1855194862, now seen corresponding path program 1 times [2021-12-22 12:37:48,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:37:48,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955751242] [2021-12-22 12:37:48,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:37:48,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:37:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:48,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:37:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:48,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 12:37:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:48,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 12:37:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:48,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:37:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:48,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 12:37:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:48,862 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 12:37:48,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:37:48,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955751242] [2021-12-22 12:37:48,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955751242] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:37:48,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:37:48,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:37:48,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27460270] [2021-12-22 12:37:48,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:37:48,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:37:48,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:37:48,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:37:48,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:37:48,864 INFO L87 Difference]: Start difference. First operand 4226 states and 7211 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:37:50,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:37:50,442 INFO L93 Difference]: Finished difference Result 9483 states and 15507 transitions. [2021-12-22 12:37:50,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:37:50,442 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-22 12:37:50,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:37:50,477 INFO L225 Difference]: With dead ends: 9483 [2021-12-22 12:37:50,478 INFO L226 Difference]: Without dead ends: 7393 [2021-12-22 12:37:50,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:37:50,488 INFO L933 BasicCegarLoop]: 4591 mSDtfsCounter, 4933 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1941 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4947 SdHoareTripleChecker+Valid, 21703 SdHoareTripleChecker+Invalid, 2009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:37:50,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4947 Valid, 21703 Invalid, 2009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1941 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 12:37:50,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7393 states. [2021-12-22 12:37:50,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7393 to 6069. [2021-12-22 12:37:50,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6069 states, 5672 states have (on average 1.6614950634696757) internal successors, (9424), 5690 states have internal predecessors, (9424), 277 states have call successors, (277), 102 states have call predecessors, (277), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2021-12-22 12:37:50,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6069 states to 6069 states and 10075 transitions. [2021-12-22 12:37:50,726 INFO L78 Accepts]: Start accepts. Automaton has 6069 states and 10075 transitions. Word has length 123 [2021-12-22 12:37:50,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:37:50,726 INFO L470 AbstractCegarLoop]: Abstraction has 6069 states and 10075 transitions. [2021-12-22 12:37:50,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:37:50,727 INFO L276 IsEmpty]: Start isEmpty. Operand 6069 states and 10075 transitions. [2021-12-22 12:37:50,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-22 12:37:50,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:37:50,730 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] [2021-12-22 12:37:50,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 12:37:50,730 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:37:50,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:37:50,731 INFO L85 PathProgramCache]: Analyzing trace with hash 548052464, now seen corresponding path program 1 times [2021-12-22 12:37:50,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:37:50,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042094689] [2021-12-22 12:37:50,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:37:50,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:37:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:50,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:37:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:50,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 12:37:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:50,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 12:37:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:50,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:37:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:50,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 12:37:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:50,834 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 12:37:50,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:37:50,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042094689] [2021-12-22 12:37:50,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042094689] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:37:50,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:37:50,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:37:50,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594685984] [2021-12-22 12:37:50,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:37:50,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:37:50,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:37:50,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:37:50,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:37:50,837 INFO L87 Difference]: Start difference. First operand 6069 states and 10075 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:37:52,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:37:52,837 INFO L93 Difference]: Finished difference Result 16148 states and 26009 transitions. [2021-12-22 12:37:52,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:37:52,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-22 12:37:52,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:37:52,873 INFO L225 Difference]: With dead ends: 16148 [2021-12-22 12:37:52,874 INFO L226 Difference]: Without dead ends: 12215 [2021-12-22 12:37:52,887 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 12:37:52,889 INFO L933 BasicCegarLoop]: 4585 mSDtfsCounter, 4932 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4946 SdHoareTripleChecker+Valid, 21697 SdHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:37:52,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4946 Valid, 21697 Invalid, 2004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1933 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-22 12:37:52,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12215 states. [2021-12-22 12:37:53,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12215 to 9768. [2021-12-22 12:37:53,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9768 states, 9003 states have (on average 1.6143507719649006) internal successors, (14534), 9037 states have internal predecessors, (14534), 533 states have call successors, (533), 198 states have call predecessors, (533), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2021-12-22 12:37:53,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9768 states to 9768 states and 15875 transitions. [2021-12-22 12:37:53,256 INFO L78 Accepts]: Start accepts. Automaton has 9768 states and 15875 transitions. Word has length 123 [2021-12-22 12:37:53,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:37:53,256 INFO L470 AbstractCegarLoop]: Abstraction has 9768 states and 15875 transitions. [2021-12-22 12:37:53,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:37:53,256 INFO L276 IsEmpty]: Start isEmpty. Operand 9768 states and 15875 transitions. [2021-12-22 12:37:53,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-22 12:37:53,262 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:37:53,262 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] [2021-12-22 12:37:53,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 12:37:53,263 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:37:53,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:37:53,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1849418066, now seen corresponding path program 1 times [2021-12-22 12:37:53,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:37:53,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682115152] [2021-12-22 12:37:53,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:37:53,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:37:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:53,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:37:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:53,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 12:37:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:53,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 12:37:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:53,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:37:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:53,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 12:37:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:53,361 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 12:37:53,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:37:53,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682115152] [2021-12-22 12:37:53,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682115152] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:37:53,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:37:53,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:37:53,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502528762] [2021-12-22 12:37:53,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:37:53,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:37:53,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:37:53,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:37:53,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:37:53,363 INFO L87 Difference]: Start difference. First operand 9768 states and 15875 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:37:54,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:37:54,521 INFO L93 Difference]: Finished difference Result 19942 states and 32204 transitions. [2021-12-22 12:37:54,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 12:37:54,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-22 12:37:54,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:37:54,556 INFO L225 Difference]: With dead ends: 19942 [2021-12-22 12:37:54,557 INFO L226 Difference]: Without dead ends: 12310 [2021-12-22 12:37:54,577 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 12:37:54,578 INFO L933 BasicCegarLoop]: 4350 mSDtfsCounter, 4776 mSDsluCounter, 12357 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4791 SdHoareTripleChecker+Valid, 16707 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 12:37:54,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4791 Valid, 16707 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 12:37:54,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12310 states. [2021-12-22 12:37:54,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12310 to 9768. [2021-12-22 12:37:54,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9768 states, 9003 states have (on average 1.6106853271131845) internal successors, (14501), 9037 states have internal predecessors, (14501), 533 states have call successors, (533), 198 states have call predecessors, (533), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2021-12-22 12:37:54,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9768 states to 9768 states and 15842 transitions. [2021-12-22 12:37:54,954 INFO L78 Accepts]: Start accepts. Automaton has 9768 states and 15842 transitions. Word has length 123 [2021-12-22 12:37:54,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:37:54,954 INFO L470 AbstractCegarLoop]: Abstraction has 9768 states and 15842 transitions. [2021-12-22 12:37:54,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:37:54,954 INFO L276 IsEmpty]: Start isEmpty. Operand 9768 states and 15842 transitions. [2021-12-22 12:37:54,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-22 12:37:54,960 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:37:54,960 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] [2021-12-22 12:37:54,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 12:37:54,960 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:37:54,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:37:54,961 INFO L85 PathProgramCache]: Analyzing trace with hash 539145964, now seen corresponding path program 1 times [2021-12-22 12:37:54,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:37:54,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459372628] [2021-12-22 12:37:54,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:37:54,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:37:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:54,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:37:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:55,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 12:37:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:55,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 12:37:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:55,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:37:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:55,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 12:37:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:55,056 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 12:37:55,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:37:55,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459372628] [2021-12-22 12:37:55,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459372628] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:37:55,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:37:55,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:37:55,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103278555] [2021-12-22 12:37:55,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:37:55,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:37:55,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:37:55,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:37:55,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:37:55,059 INFO L87 Difference]: Start difference. First operand 9768 states and 15842 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:37:57,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:37:57,846 INFO L93 Difference]: Finished difference Result 32836 states and 52097 transitions. [2021-12-22 12:37:57,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:37:57,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-22 12:37:57,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:37:57,923 INFO L225 Difference]: With dead ends: 32836 [2021-12-22 12:37:57,923 INFO L226 Difference]: Without dead ends: 25204 [2021-12-22 12:37:57,949 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 12:37:57,951 INFO L933 BasicCegarLoop]: 4569 mSDtfsCounter, 5211 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5233 SdHoareTripleChecker+Valid, 21673 SdHoareTripleChecker+Invalid, 1964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:37:57,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5233 Valid, 21673 Invalid, 1964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1887 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-22 12:37:57,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25204 states. [2021-12-22 12:37:58,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25204 to 17165. [2021-12-22 12:37:58,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17165 states, 15696 states have (on average 1.5779179408766564) internal successors, (24767), 15762 states have internal predecessors, (24767), 1013 states have call successors, (1013), 390 states have call predecessors, (1013), 454 states have return successors, (1806), 1076 states have call predecessors, (1806), 1013 states have call successors, (1806) [2021-12-22 12:37:58,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17165 states to 17165 states and 27586 transitions. [2021-12-22 12:37:58,990 INFO L78 Accepts]: Start accepts. Automaton has 17165 states and 27586 transitions. Word has length 123 [2021-12-22 12:37:58,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:37:58,991 INFO L470 AbstractCegarLoop]: Abstraction has 17165 states and 27586 transitions. [2021-12-22 12:37:58,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:37:58,991 INFO L276 IsEmpty]: Start isEmpty. Operand 17165 states and 27586 transitions. [2021-12-22 12:37:59,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-22 12:37:59,005 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:37:59,005 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] [2021-12-22 12:37:59,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 12:37:59,006 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:37:59,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:37:59,009 INFO L85 PathProgramCache]: Analyzing trace with hash 2140217070, now seen corresponding path program 1 times [2021-12-22 12:37:59,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:37:59,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726984348] [2021-12-22 12:37:59,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:37:59,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:37:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:59,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:37:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:59,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 12:37:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:59,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 12:37:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:59,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:37:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:59,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 12:37:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:37:59,109 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 12:37:59,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:37:59,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726984348] [2021-12-22 12:37:59,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726984348] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:37:59,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:37:59,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:37:59,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487375162] [2021-12-22 12:37:59,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:37:59,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:37:59,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:37:59,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:37:59,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:37:59,111 INFO L87 Difference]: Start difference. First operand 17165 states and 27586 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:38:03,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:38:03,563 INFO L93 Difference]: Finished difference Result 61867 states and 98487 transitions. [2021-12-22 12:38:03,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:38:03,565 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-22 12:38:03,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:38:03,723 INFO L225 Difference]: With dead ends: 61867 [2021-12-22 12:38:03,723 INFO L226 Difference]: Without dead ends: 46838 [2021-12-22 12:38:03,764 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 12:38:03,765 INFO L933 BasicCegarLoop]: 4671 mSDtfsCounter, 4981 mSDsluCounter, 17101 mSDsCounter, 0 mSdLazyCounter, 2202 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4994 SdHoareTripleChecker+Valid, 21772 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-22 12:38:03,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4994 Valid, 21772 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2202 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-22 12:38:03,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46838 states. [2021-12-22 12:38:05,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46838 to 31602. [2021-12-22 12:38:05,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31602 states, 28757 states have (on average 1.5581945265500574) internal successors, (44809), 28887 states have internal predecessors, (44809), 1941 states have call successors, (1941), 774 states have call predecessors, (1941), 902 states have return successors, (4256), 2068 states have call predecessors, (4256), 1941 states have call successors, (4256) [2021-12-22 12:38:05,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31602 states to 31602 states and 51006 transitions. [2021-12-22 12:38:05,519 INFO L78 Accepts]: Start accepts. Automaton has 31602 states and 51006 transitions. Word has length 123 [2021-12-22 12:38:05,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:38:05,520 INFO L470 AbstractCegarLoop]: Abstraction has 31602 states and 51006 transitions. [2021-12-22 12:38:05,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:38:05,520 INFO L276 IsEmpty]: Start isEmpty. Operand 31602 states and 51006 transitions. [2021-12-22 12:38:05,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-22 12:38:05,536 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:38:05,536 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] [2021-12-22 12:38:05,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 12:38:05,536 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:38:05,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:38:05,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1083485868, now seen corresponding path program 1 times [2021-12-22 12:38:05,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:38:05,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115723479] [2021-12-22 12:38:05,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:38:05,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:38:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:05,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:38:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:05,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 12:38:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:05,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 12:38:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:05,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:38:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:05,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 12:38:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:05,676 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 12:38:05,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:38:05,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115723479] [2021-12-22 12:38:05,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115723479] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:38:05,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:38:05,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:38:05,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519404516] [2021-12-22 12:38:05,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:38:05,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:38:05,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:38:05,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:38:05,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:38:05,677 INFO L87 Difference]: Start difference. First operand 31602 states and 51006 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:38:13,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:38:13,324 INFO L93 Difference]: Finished difference Result 117782 states and 189717 transitions. [2021-12-22 12:38:13,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:38:13,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-22 12:38:13,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:38:13,658 INFO L225 Difference]: With dead ends: 117782 [2021-12-22 12:38:13,658 INFO L226 Difference]: Without dead ends: 88316 [2021-12-22 12:38:13,747 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 12:38:13,748 INFO L933 BasicCegarLoop]: 4559 mSDtfsCounter, 5131 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5153 SdHoareTripleChecker+Valid, 21663 SdHoareTripleChecker+Invalid, 1948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:38:13,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5153 Valid, 21663 Invalid, 1948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-22 12:38:13,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88316 states. [2021-12-22 12:38:17,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88316 to 60731. [2021-12-22 12:38:17,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60731 states, 55198 states have (on average 1.5483713178013696) internal successors, (85467), 55456 states have internal predecessors, (85467), 3733 states have call successors, (3733), 1542 states have call predecessors, (3733), 1798 states have return successors, (10550), 3988 states have call predecessors, (10550), 3733 states have call successors, (10550) [2021-12-22 12:38:17,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60731 states to 60731 states and 99750 transitions. [2021-12-22 12:38:17,743 INFO L78 Accepts]: Start accepts. Automaton has 60731 states and 99750 transitions. Word has length 123 [2021-12-22 12:38:17,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:38:17,743 INFO L470 AbstractCegarLoop]: Abstraction has 60731 states and 99750 transitions. [2021-12-22 12:38:17,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:38:17,743 INFO L276 IsEmpty]: Start isEmpty. Operand 60731 states and 99750 transitions. [2021-12-22 12:38:17,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-22 12:38:17,778 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:38:17,778 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] [2021-12-22 12:38:17,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 12:38:17,779 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:38:17,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:38:17,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1860096210, now seen corresponding path program 1 times [2021-12-22 12:38:17,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:38:17,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996679324] [2021-12-22 12:38:17,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:38:17,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:38:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:17,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:38:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:17,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-22 12:38:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:17,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 12:38:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:17,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 12:38:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:17,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 12:38:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:17,858 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 12:38:17,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:38:17,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996679324] [2021-12-22 12:38:17,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996679324] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:38:17,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:38:17,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:38:17,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269074352] [2021-12-22 12:38:17,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:38:17,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:38:17,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:38:17,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:38:17,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:38:17,860 INFO L87 Difference]: Start difference. First operand 60731 states and 99750 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:38:31,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:38:31,722 INFO L93 Difference]: Finished difference Result 228077 states and 375643 transitions. [2021-12-22 12:38:31,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:38:31,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-22 12:38:31,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted.