./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.05.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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_label42+token_ring.05.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52ae6c88c77f2a2d1ba84720becde4fbcf955211b08c092cae514b34c6358b12 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:39:05,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:39:05,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:39:05,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:39:05,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:39:05,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:39:05,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:39:05,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:39:05,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:39:05,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:39:05,446 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:39:05,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:39:05,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:39:05,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:39:05,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:39:05,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:39:05,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:39:05,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:39:05,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:39:05,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:39:05,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:39:05,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:39:05,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:39:05,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:39:05,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:39:05,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:39:05,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:39:05,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:39:05,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:39:05,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:39:05,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:39:05,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:39:05,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:39:05,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:39:05,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:39:05,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:39:05,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:39:05,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:39:05,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:39:05,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:39:05,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:39:05,490 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:39:05,513 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:39:05,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:39:05,514 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:39:05,514 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:39:05,515 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:39:05,515 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:39:05,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:39:05,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:39:05,516 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:39:05,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:39:05,516 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:39:05,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:39:05,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:39:05,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:39:05,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:39:05,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:39:05,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:39:05,517 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:39:05,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:39:05,517 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:39:05,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:39:05,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:39:05,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:39:05,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:39:05,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:39:05,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:39:05,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:39:05,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:39:05,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:39:05,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:39:05,519 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:39:05,520 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:39:05,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:39:05,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:39:05,520 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52ae6c88c77f2a2d1ba84720becde4fbcf955211b08c092cae514b34c6358b12 [2021-12-14 15:39:05,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:39:05,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:39:05,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:39:05,757 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:39:05,757 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:39:05,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.05.cil-2.c [2021-12-14 15:39:05,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a0528c23/9bdec6105b2c4f83b37c23e93bf31ba5/FLAG17ce31e21 [2021-12-14 15:39:06,622 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:39:06,622 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.05.cil-2.c [2021-12-14 15:39:06,665 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a0528c23/9bdec6105b2c4f83b37c23e93bf31ba5/FLAG17ce31e21 [2021-12-14 15:39:07,130 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a0528c23/9bdec6105b2c4f83b37c23e93bf31ba5 [2021-12-14 15:39:07,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:39:07,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:39:07,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:39:07,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:39:07,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:39:07,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:39:07" (1/1) ... [2021-12-14 15:39:07,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ed0bd68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:07, skipping insertion in model container [2021-12-14 15:39:07,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:39:07" (1/1) ... [2021-12-14 15:39:07,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:39:07,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:39:08,854 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_label42+token_ring.05.cil-2.c[378560,378573] [2021-12-14 15:39:08,882 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_label42+token_ring.05.cil-2.c[383339,383352] [2021-12-14 15:39:09,041 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:39:09,050 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:39:09,908 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_label42+token_ring.05.cil-2.c[378560,378573] [2021-12-14 15:39:09,930 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_label42+token_ring.05.cil-2.c[383339,383352] [2021-12-14 15:39:09,942 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:39:10,001 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:39:10,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:10 WrapperNode [2021-12-14 15:39:10,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:39:10,002 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:39:10,002 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:39:10,003 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:39:10,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:10" (1/1) ... [2021-12-14 15:39:10,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:10" (1/1) ... [2021-12-14 15:39:10,549 INFO L137 Inliner]: procedures = 54, calls = 57, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 12798 [2021-12-14 15:39:10,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:39:10,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:39:10,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:39:10,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:39:10,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:10" (1/1) ... [2021-12-14 15:39:10,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:10" (1/1) ... [2021-12-14 15:39:10,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:10" (1/1) ... [2021-12-14 15:39:10,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:10" (1/1) ... [2021-12-14 15:39:10,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:10" (1/1) ... [2021-12-14 15:39:11,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:10" (1/1) ... [2021-12-14 15:39:11,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:10" (1/1) ... [2021-12-14 15:39:11,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:39:11,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:39:11,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:39:11,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:39:11,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:10" (1/1) ... [2021-12-14 15:39:11,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:39:11,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:39:11,137 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) [2021-12-14 15:39:11,159 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 [2021-12-14 15:39:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:39:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-14 15:39:11,176 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-14 15:39:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-14 15:39:11,177 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-14 15:39:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-14 15:39:11,177 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-14 15:39:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-14 15:39:11,177 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-14 15:39:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-14 15:39:11,177 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-14 15:39:11,178 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-14 15:39:11,178 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-14 15:39:11,178 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-14 15:39:11,178 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-14 15:39:11,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:39:11,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:39:11,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:39:11,302 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:39:11,312 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:39:17,214 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:39:17,247 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:39:17,248 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-12-14 15:39:17,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:39:17 BoogieIcfgContainer [2021-12-14 15:39:17,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:39:17,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:39:17,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:39:17,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:39:17,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:39:07" (1/3) ... [2021-12-14 15:39:17,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15760b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:39:17, skipping insertion in model container [2021-12-14 15:39:17,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:10" (2/3) ... [2021-12-14 15:39:17,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15760b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:39:17, skipping insertion in model container [2021-12-14 15:39:17,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:39:17" (3/3) ... [2021-12-14 15:39:17,263 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.05.cil-2.c [2021-12-14 15:39:17,268 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:39:17,268 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:39:17,333 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:39:17,338 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 [2021-12-14 15:39:17,338 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:39:17,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 2398 states, 2367 states have (on average 1.85297845373891) internal successors, (4386), 2372 states have internal predecessors, (4386), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-14 15:39:17,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-14 15:39:17,401 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:17,402 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] [2021-12-14 15:39:17,402 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:17,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:17,407 INFO L85 PathProgramCache]: Analyzing trace with hash -645844934, now seen corresponding path program 1 times [2021-12-14 15:39:17,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:17,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135839264] [2021-12-14 15:39:17,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:17,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:17,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:17,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 15:39:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:17,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 15:39:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:17,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 15:39:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:17,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:39:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:17,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:39:17,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:17,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135839264] [2021-12-14 15:39:17,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135839264] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:17,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:39:17,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:39:17,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076181571] [2021-12-14 15:39:17,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:17,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:39:17,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:17,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:39:17,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:39:17,843 INFO L87 Difference]: Start difference. First operand has 2398 states, 2367 states have (on average 1.85297845373891) internal successors, (4386), 2372 states have internal predecessors, (4386), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:18,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:39:18,728 INFO L93 Difference]: Finished difference Result 4852 states and 8953 transitions. [2021-12-14 15:39:18,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:39:18,730 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2021-12-14 15:39:18,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:39:18,761 INFO L225 Difference]: With dead ends: 4852 [2021-12-14 15:39:18,761 INFO L226 Difference]: Without dead ends: 2395 [2021-12-14 15:39:18,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:39:18,777 INFO L933 BasicCegarLoop]: 4373 mSDtfsCounter, 521 mSDsluCounter, 12314 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 16687 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:39:18,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [538 Valid, 16687 Invalid, 389 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 15:39:18,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2021-12-14 15:39:18,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2330. [2021-12-14 15:39:18,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2330 states, 2301 states have (on average 1.841373315949587) internal successors, (4237), 2304 states have internal predecessors, (4237), 21 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-14 15:39:18,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 4277 transitions. [2021-12-14 15:39:18,911 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 4277 transitions. Word has length 102 [2021-12-14 15:39:18,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:39:18,912 INFO L470 AbstractCegarLoop]: Abstraction has 2330 states and 4277 transitions. [2021-12-14 15:39:18,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:18,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 4277 transitions. [2021-12-14 15:39:18,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-14 15:39:18,916 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:18,916 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] [2021-12-14 15:39:18,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:39:18,917 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:18,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:18,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1294737080, now seen corresponding path program 1 times [2021-12-14 15:39:18,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:18,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900232257] [2021-12-14 15:39:18,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:18,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:18,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:19,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 15:39:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:19,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 15:39:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:19,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 15:39:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:19,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:39:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:19,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:39:19,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:19,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900232257] [2021-12-14 15:39:19,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900232257] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:19,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:39:19,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:39:19,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413387008] [2021-12-14 15:39:19,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:19,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:39:19,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:19,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:39:19,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:39:19,098 INFO L87 Difference]: Start difference. First operand 2330 states and 4277 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:20,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:39:20,358 INFO L93 Difference]: Finished difference Result 2856 states and 5108 transitions. [2021-12-14 15:39:20,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 15:39:20,358 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2021-12-14 15:39:20,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:39:20,375 INFO L225 Difference]: With dead ends: 2856 [2021-12-14 15:39:20,376 INFO L226 Difference]: Without dead ends: 2660 [2021-12-14 15:39:20,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:39:20,380 INFO L933 BasicCegarLoop]: 4328 mSDtfsCounter, 4721 mSDsluCounter, 12456 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4733 SdHoareTripleChecker+Valid, 16784 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:39:20,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4733 Valid, 16784 Invalid, 1052 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 15:39:20,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2021-12-14 15:39:20,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2529. [2021-12-14 15:39:20,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2529 states, 2479 states have (on average 1.8217022993142395) internal successors, (4516), 2483 states have internal predecessors, (4516), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2021-12-14 15:39:20,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2529 states to 2529 states and 4587 transitions. [2021-12-14 15:39:20,458 INFO L78 Accepts]: Start accepts. Automaton has 2529 states and 4587 transitions. Word has length 102 [2021-12-14 15:39:20,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:39:20,458 INFO L470 AbstractCegarLoop]: Abstraction has 2529 states and 4587 transitions. [2021-12-14 15:39:20,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:20,459 INFO L276 IsEmpty]: Start isEmpty. Operand 2529 states and 4587 transitions. [2021-12-14 15:39:20,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-14 15:39:20,466 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:20,467 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] [2021-12-14 15:39:20,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:39:20,467 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:20,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:20,468 INFO L85 PathProgramCache]: Analyzing trace with hash -389078092, now seen corresponding path program 1 times [2021-12-14 15:39:20,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:20,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72898323] [2021-12-14 15:39:20,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:20,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:20,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:20,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 15:39:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:20,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 15:39:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:20,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 15:39:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:20,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:39:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:20,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:39:20,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:20,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72898323] [2021-12-14 15:39:20,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72898323] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:20,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:39:20,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:39:20,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187016304] [2021-12-14 15:39:20,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:20,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:39:20,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:20,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:39:20,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:39:20,660 INFO L87 Difference]: Start difference. First operand 2529 states and 4587 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:21,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:39:21,410 INFO L93 Difference]: Finished difference Result 3061 states and 5432 transitions. [2021-12-14 15:39:21,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:39:21,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2021-12-14 15:39:21,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:39:21,429 INFO L225 Difference]: With dead ends: 3061 [2021-12-14 15:39:21,429 INFO L226 Difference]: Without dead ends: 2666 [2021-12-14 15:39:21,438 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 [2021-12-14 15:39:21,441 INFO L933 BasicCegarLoop]: 4285 mSDtfsCounter, 4601 mSDsluCounter, 12283 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4614 SdHoareTripleChecker+Valid, 16568 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:39:21,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4614 Valid, 16568 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 15:39:21,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2021-12-14 15:39:21,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2529. [2021-12-14 15:39:21,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2529 states, 2479 states have (on average 1.8208955223880596) internal successors, (4514), 2483 states have internal predecessors, (4514), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2021-12-14 15:39:21,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2529 states to 2529 states and 4585 transitions. [2021-12-14 15:39:21,538 INFO L78 Accepts]: Start accepts. Automaton has 2529 states and 4585 transitions. Word has length 102 [2021-12-14 15:39:21,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:39:21,539 INFO L470 AbstractCegarLoop]: Abstraction has 2529 states and 4585 transitions. [2021-12-14 15:39:21,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:21,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2529 states and 4585 transitions. [2021-12-14 15:39:21,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-14 15:39:21,541 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:21,541 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] [2021-12-14 15:39:21,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:39:21,541 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:21,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:21,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1487404726, now seen corresponding path program 1 times [2021-12-14 15:39:21,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:21,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030899591] [2021-12-14 15:39:21,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:21,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:21,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:21,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 15:39:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:21,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 15:39:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:21,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 15:39:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:21,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:39:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:39:21,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:21,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030899591] [2021-12-14 15:39:21,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030899591] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:21,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:39:21,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:39:21,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134293557] [2021-12-14 15:39:21,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:21,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:39:21,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:21,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:39:21,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:39:21,673 INFO L87 Difference]: Start difference. First operand 2529 states and 4585 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:23,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:39:23,218 INFO L93 Difference]: Finished difference Result 3321 states and 5829 transitions. [2021-12-14 15:39:23,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:39:23,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2021-12-14 15:39:23,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:39:23,232 INFO L225 Difference]: With dead ends: 3321 [2021-12-14 15:39:23,232 INFO L226 Difference]: Without dead ends: 2926 [2021-12-14 15:39:23,235 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 [2021-12-14 15:39:23,236 INFO L933 BasicCegarLoop]: 4475 mSDtfsCounter, 4718 mSDsluCounter, 16937 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4730 SdHoareTripleChecker+Valid, 21412 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:39:23,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4730 Valid, 21412 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 15:39:23,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2021-12-14 15:39:23,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2716. [2021-12-14 15:39:23,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2645 states have (on average 1.8026465028355387) internal successors, (4768), 2650 states have internal predecessors, (4768), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2021-12-14 15:39:23,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 4869 transitions. [2021-12-14 15:39:23,318 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 4869 transitions. Word has length 102 [2021-12-14 15:39:23,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:39:23,318 INFO L470 AbstractCegarLoop]: Abstraction has 2716 states and 4869 transitions. [2021-12-14 15:39:23,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:23,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 4869 transitions. [2021-12-14 15:39:23,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-14 15:39:23,320 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:23,321 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] [2021-12-14 15:39:23,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:39:23,321 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:23,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:23,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1482706376, now seen corresponding path program 1 times [2021-12-14 15:39:23,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:23,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340481231] [2021-12-14 15:39:23,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:23,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:23,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:23,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 15:39:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:23,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 15:39:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:23,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 15:39:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:23,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:39:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:23,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:39:23,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:23,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340481231] [2021-12-14 15:39:23,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340481231] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:23,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:39:23,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:39:23,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468192833] [2021-12-14 15:39:23,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:23,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:39:23,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:23,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:39:23,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:39:23,420 INFO L87 Difference]: Start difference. First operand 2716 states and 4869 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:24,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:39:24,924 INFO L93 Difference]: Finished difference Result 4006 states and 6889 transitions. [2021-12-14 15:39:24,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:39:24,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2021-12-14 15:39:24,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:39:24,941 INFO L225 Difference]: With dead ends: 4006 [2021-12-14 15:39:24,941 INFO L226 Difference]: Without dead ends: 3424 [2021-12-14 15:39:24,945 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 [2021-12-14 15:39:24,946 INFO L933 BasicCegarLoop]: 4468 mSDtfsCounter, 4714 mSDsluCounter, 16933 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4726 SdHoareTripleChecker+Valid, 21401 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:39:24,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4726 Valid, 21401 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 15:39:24,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3424 states. [2021-12-14 15:39:25,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3424 to 3093. [2021-12-14 15:39:25,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3093 states, 2980 states have (on average 1.7721476510067113) internal successors, (5281), 2987 states have internal predecessors, (5281), 77 states have call successors, (77), 31 states have call predecessors, (77), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2021-12-14 15:39:25,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3093 states to 3093 states and 5446 transitions. [2021-12-14 15:39:25,043 INFO L78 Accepts]: Start accepts. Automaton has 3093 states and 5446 transitions. Word has length 102 [2021-12-14 15:39:25,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:39:25,043 INFO L470 AbstractCegarLoop]: Abstraction has 3093 states and 5446 transitions. [2021-12-14 15:39:25,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:25,044 INFO L276 IsEmpty]: Start isEmpty. Operand 3093 states and 5446 transitions. [2021-12-14 15:39:25,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-14 15:39:25,045 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:25,046 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] [2021-12-14 15:39:25,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:39:25,046 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:25,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:25,047 INFO L85 PathProgramCache]: Analyzing trace with hash 84051574, now seen corresponding path program 1 times [2021-12-14 15:39:25,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:25,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617953878] [2021-12-14 15:39:25,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:25,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:25,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:25,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 15:39:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:25,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 15:39:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:25,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 15:39:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:25,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:39:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:39:25,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:25,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617953878] [2021-12-14 15:39:25,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617953878] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:25,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:39:25,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:39:25,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533182880] [2021-12-14 15:39:25,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:25,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:39:25,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:25,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:39:25,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:39:25,140 INFO L87 Difference]: Start difference. First operand 3093 states and 5446 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:25,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:39:25,990 INFO L93 Difference]: Finished difference Result 4371 states and 7455 transitions. [2021-12-14 15:39:25,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:39:25,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2021-12-14 15:39:25,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:39:26,007 INFO L225 Difference]: With dead ends: 4371 [2021-12-14 15:39:26,008 INFO L226 Difference]: Without dead ends: 3412 [2021-12-14 15:39:26,012 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 [2021-12-14 15:39:26,013 INFO L933 BasicCegarLoop]: 4272 mSDtfsCounter, 4598 mSDsluCounter, 12282 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4611 SdHoareTripleChecker+Valid, 16554 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:39:26,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4611 Valid, 16554 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 15:39:26,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3412 states. [2021-12-14 15:39:26,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3412 to 3093. [2021-12-14 15:39:26,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3093 states, 2980 states have (on average 1.770469798657718) internal successors, (5276), 2987 states have internal predecessors, (5276), 77 states have call successors, (77), 31 states have call predecessors, (77), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2021-12-14 15:39:26,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3093 states to 3093 states and 5441 transitions. [2021-12-14 15:39:26,129 INFO L78 Accepts]: Start accepts. Automaton has 3093 states and 5441 transitions. Word has length 102 [2021-12-14 15:39:26,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:39:26,130 INFO L470 AbstractCegarLoop]: Abstraction has 3093 states and 5441 transitions. [2021-12-14 15:39:26,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:26,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3093 states and 5441 transitions. [2021-12-14 15:39:26,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-14 15:39:26,132 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:26,132 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] [2021-12-14 15:39:26,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:39:26,133 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:26,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:26,133 INFO L85 PathProgramCache]: Analyzing trace with hash -973786504, now seen corresponding path program 1 times [2021-12-14 15:39:26,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:26,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777486562] [2021-12-14 15:39:26,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:26,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:26,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:26,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 15:39:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:26,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 15:39:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:26,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 15:39:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:26,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:39:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:26,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:39:26,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:26,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777486562] [2021-12-14 15:39:26,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777486562] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:26,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:39:26,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:39:26,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670409554] [2021-12-14 15:39:26,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:26,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:39:26,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:26,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:39:26,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:39:26,254 INFO L87 Difference]: Start difference. First operand 3093 states and 5441 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:27,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:39:27,835 INFO L93 Difference]: Finished difference Result 5649 states and 9388 transitions. [2021-12-14 15:39:27,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:39:27,835 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2021-12-14 15:39:27,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:39:27,859 INFO L225 Difference]: With dead ends: 5649 [2021-12-14 15:39:27,859 INFO L226 Difference]: Without dead ends: 4690 [2021-12-14 15:39:27,866 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 [2021-12-14 15:39:27,866 INFO L933 BasicCegarLoop]: 4322 mSDtfsCounter, 4966 mSDsluCounter, 16559 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4984 SdHoareTripleChecker+Valid, 20881 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:39:27,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4984 Valid, 20881 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 15:39:27,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4690 states. [2021-12-14 15:39:28,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4690 to 3843. [2021-12-14 15:39:28,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3843 states, 3650 states have (on average 1.726027397260274) internal successors, (6300), 3661 states have internal predecessors, (6300), 129 states have call successors, (129), 55 states have call predecessors, (129), 62 states have return successors, (162), 134 states have call predecessors, (162), 127 states have call successors, (162) [2021-12-14 15:39:28,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3843 states to 3843 states and 6591 transitions. [2021-12-14 15:39:28,023 INFO L78 Accepts]: Start accepts. Automaton has 3843 states and 6591 transitions. Word has length 102 [2021-12-14 15:39:28,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:39:28,023 INFO L470 AbstractCegarLoop]: Abstraction has 3843 states and 6591 transitions. [2021-12-14 15:39:28,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:28,025 INFO L276 IsEmpty]: Start isEmpty. Operand 3843 states and 6591 transitions. [2021-12-14 15:39:28,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-14 15:39:28,027 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:28,027 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] [2021-12-14 15:39:28,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:39:28,028 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:28,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:28,028 INFO L85 PathProgramCache]: Analyzing trace with hash -2116288970, now seen corresponding path program 1 times [2021-12-14 15:39:28,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:28,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535791328] [2021-12-14 15:39:28,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:28,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:28,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:28,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 15:39:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:28,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 15:39:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:28,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 15:39:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:28,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:39:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:28,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:39:28,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:28,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535791328] [2021-12-14 15:39:28,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535791328] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:28,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:39:28,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:39:28,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451243960] [2021-12-14 15:39:28,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:28,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:39:28,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:28,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:39:28,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:39:28,138 INFO L87 Difference]: Start difference. First operand 3843 states and 6591 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:29,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:39:29,955 INFO L93 Difference]: Finished difference Result 8501 states and 13780 transitions. [2021-12-14 15:39:29,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:39:29,956 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2021-12-14 15:39:29,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:39:29,986 INFO L225 Difference]: With dead ends: 8501 [2021-12-14 15:39:29,986 INFO L226 Difference]: Without dead ends: 6792 [2021-12-14 15:39:29,997 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 [2021-12-14 15:39:29,998 INFO L933 BasicCegarLoop]: 4525 mSDtfsCounter, 4747 mSDsluCounter, 16922 mSDsCounter, 0 mSdLazyCounter, 1663 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4758 SdHoareTripleChecker+Valid, 21447 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:39:29,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4758 Valid, 21447 Invalid, 1739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1663 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 15:39:30,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6792 states. [2021-12-14 15:39:30,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6792 to 5256. [2021-12-14 15:39:30,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5256 states, 4907 states have (on average 1.6714897085795801) internal successors, (8202), 4926 states have internal predecessors, (8202), 229 states have call successors, (229), 103 states have call predecessors, (229), 118 states have return successors, (324), 242 states have call predecessors, (324), 227 states have call successors, (324) [2021-12-14 15:39:30,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5256 states to 5256 states and 8755 transitions. [2021-12-14 15:39:30,326 INFO L78 Accepts]: Start accepts. Automaton has 5256 states and 8755 transitions. Word has length 102 [2021-12-14 15:39:30,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:39:30,327 INFO L470 AbstractCegarLoop]: Abstraction has 5256 states and 8755 transitions. [2021-12-14 15:39:30,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:30,327 INFO L276 IsEmpty]: Start isEmpty. Operand 5256 states and 8755 transitions. [2021-12-14 15:39:30,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-14 15:39:30,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:30,331 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] [2021-12-14 15:39:30,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:39:30,332 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:30,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:30,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1876049224, now seen corresponding path program 1 times [2021-12-14 15:39:30,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:30,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460879033] [2021-12-14 15:39:30,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:30,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:30,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:30,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:30,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 15:39:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:30,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 15:39:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:30,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 15:39:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:30,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:39:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:39:30,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:30,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460879033] [2021-12-14 15:39:30,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460879033] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:30,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:39:30,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:39:30,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877678395] [2021-12-14 15:39:30,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:30,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:39:30,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:30,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:39:30,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:39:30,419 INFO L87 Difference]: Start difference. First operand 5256 states and 8755 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:32,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:39:32,070 INFO L93 Difference]: Finished difference Result 13816 states and 21958 transitions. [2021-12-14 15:39:32,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:39:32,072 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2021-12-14 15:39:32,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:39:32,133 INFO L225 Difference]: With dead ends: 13816 [2021-12-14 15:39:32,133 INFO L226 Difference]: Without dead ends: 10694 [2021-12-14 15:39:32,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:39:32,153 INFO L933 BasicCegarLoop]: 4445 mSDtfsCounter, 4839 mSDsluCounter, 16925 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4857 SdHoareTripleChecker+Valid, 21370 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:39:32,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4857 Valid, 21370 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1422 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 15:39:32,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10694 states. [2021-12-14 15:39:32,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10694 to 8153. [2021-12-14 15:39:32,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8153 states, 7500 states have (on average 1.6208) internal successors, (12156), 7535 states have internal predecessors, (12156), 421 states have call successors, (421), 199 states have call predecessors, (421), 230 states have return successors, (694), 450 states have call predecessors, (694), 419 states have call successors, (694) [2021-12-14 15:39:32,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8153 states to 8153 states and 13271 transitions. [2021-12-14 15:39:32,564 INFO L78 Accepts]: Start accepts. Automaton has 8153 states and 13271 transitions. Word has length 102 [2021-12-14 15:39:32,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:39:32,565 INFO L470 AbstractCegarLoop]: Abstraction has 8153 states and 13271 transitions. [2021-12-14 15:39:32,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:32,565 INFO L276 IsEmpty]: Start isEmpty. Operand 8153 states and 13271 transitions. [2021-12-14 15:39:32,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-14 15:39:32,571 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:32,571 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] [2021-12-14 15:39:32,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:39:32,572 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:32,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:32,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1037015562, now seen corresponding path program 1 times [2021-12-14 15:39:32,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:32,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722573844] [2021-12-14 15:39:32,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:32,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:32,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:32,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 15:39:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:32,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 15:39:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:32,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 15:39:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:32,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:39:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:32,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:39:32,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:32,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722573844] [2021-12-14 15:39:32,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722573844] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:32,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:39:32,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:39:32,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891966363] [2021-12-14 15:39:32,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:32,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:39:32,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:32,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:39:32,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:39:32,667 INFO L87 Difference]: Start difference. First operand 8153 states and 13271 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:34,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:39:34,530 INFO L93 Difference]: Finished difference Result 24375 states and 38476 transitions. [2021-12-14 15:39:34,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:39:34,531 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2021-12-14 15:39:34,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:39:34,602 INFO L225 Difference]: With dead ends: 24375 [2021-12-14 15:39:34,602 INFO L226 Difference]: Without dead ends: 18356 [2021-12-14 15:39:34,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:39:34,637 INFO L933 BasicCegarLoop]: 4438 mSDtfsCounter, 4802 mSDsluCounter, 16925 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4820 SdHoareTripleChecker+Valid, 21363 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:39:34,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4820 Valid, 21363 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 15:39:34,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18356 states. [2021-12-14 15:39:35,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18356 to 13930. [2021-12-14 15:39:35,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13930 states, 12685 states have (on average 1.5828143476547103) internal successors, (20078), 12752 states have internal predecessors, (20078), 789 states have call successors, (789), 391 states have call predecessors, (789), 454 states have return successors, (1580), 850 states have call predecessors, (1580), 787 states have call successors, (1580) [2021-12-14 15:39:35,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13930 states to 13930 states and 22447 transitions. [2021-12-14 15:39:35,435 INFO L78 Accepts]: Start accepts. Automaton has 13930 states and 22447 transitions. Word has length 102 [2021-12-14 15:39:35,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:39:35,435 INFO L470 AbstractCegarLoop]: Abstraction has 13930 states and 22447 transitions. [2021-12-14 15:39:35,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:35,435 INFO L276 IsEmpty]: Start isEmpty. Operand 13930 states and 22447 transitions. [2021-12-14 15:39:35,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-14 15:39:35,444 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:35,445 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] [2021-12-14 15:39:35,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:39:35,445 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:35,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:35,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1009949960, now seen corresponding path program 1 times [2021-12-14 15:39:35,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:35,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917416190] [2021-12-14 15:39:35,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:35,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:35,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:35,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 15:39:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:35,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 15:39:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:35,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 15:39:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:35,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:39:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:35,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:39:35,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:35,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917416190] [2021-12-14 15:39:35,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917416190] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:35,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:39:35,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:39:35,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479420722] [2021-12-14 15:39:35,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:35,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:39:35,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:35,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:39:35,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:39:35,524 INFO L87 Difference]: Start difference. First operand 13930 states and 22447 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:36,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:39:36,857 INFO L93 Difference]: Finished difference Result 28753 states and 46200 transitions. [2021-12-14 15:39:36,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:39:36,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2021-12-14 15:39:36,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:39:36,930 INFO L225 Difference]: With dead ends: 28753 [2021-12-14 15:39:36,931 INFO L226 Difference]: Without dead ends: 16957 [2021-12-14 15:39:36,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:39:36,979 INFO L933 BasicCegarLoop]: 4253 mSDtfsCounter, 4516 mSDsluCounter, 16350 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4529 SdHoareTripleChecker+Valid, 20603 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:39:36,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4529 Valid, 20603 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 15:39:36,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16957 states. [2021-12-14 15:39:37,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16957 to 13930. [2021-12-14 15:39:37,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13930 states, 12685 states have (on average 1.577690185258179) internal successors, (20013), 12752 states have internal predecessors, (20013), 789 states have call successors, (789), 391 states have call predecessors, (789), 454 states have return successors, (1580), 850 states have call predecessors, (1580), 787 states have call successors, (1580) [2021-12-14 15:39:37,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13930 states to 13930 states and 22382 transitions. [2021-12-14 15:39:37,934 INFO L78 Accepts]: Start accepts. Automaton has 13930 states and 22382 transitions. Word has length 102 [2021-12-14 15:39:37,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:39:37,934 INFO L470 AbstractCegarLoop]: Abstraction has 13930 states and 22382 transitions. [2021-12-14 15:39:37,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:37,935 INFO L276 IsEmpty]: Start isEmpty. Operand 13930 states and 22382 transitions. [2021-12-14 15:39:37,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-14 15:39:37,946 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:37,946 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] [2021-12-14 15:39:37,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:39:37,946 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:37,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:37,947 INFO L85 PathProgramCache]: Analyzing trace with hash 724154490, now seen corresponding path program 1 times [2021-12-14 15:39:37,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:37,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559163268] [2021-12-14 15:39:37,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:37,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:37,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:37,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 15:39:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:38,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 15:39:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:38,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 15:39:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:38,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:39:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:38,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:39:38,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:38,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559163268] [2021-12-14 15:39:38,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559163268] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:38,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:39:38,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:39:38,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018686387] [2021-12-14 15:39:38,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:38,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:39:38,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:38,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:39:38,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:39:38,030 INFO L87 Difference]: Start difference. First operand 13930 states and 22382 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:40,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:39:40,204 INFO L93 Difference]: Finished difference Result 35984 states and 56644 transitions. [2021-12-14 15:39:40,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 15:39:40,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2021-12-14 15:39:40,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:39:40,301 INFO L225 Difference]: With dead ends: 35984 [2021-12-14 15:39:40,301 INFO L226 Difference]: Without dead ends: 24189 [2021-12-14 15:39:40,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-14 15:39:40,341 INFO L933 BasicCegarLoop]: 4565 mSDtfsCounter, 4925 mSDsluCounter, 12545 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4957 SdHoareTripleChecker+Valid, 17110 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 15:39:40,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4957 Valid, 17110 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-14 15:39:40,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24189 states. [2021-12-14 15:39:41,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24189 to 19766. [2021-12-14 15:39:41,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19766 states, 17876 states have (on average 1.5501230700380397) internal successors, (27710), 18008 states have internal predecessors, (27710), 1204 states have call successors, (1204), 589 states have call predecessors, (1204), 684 states have return successors, (2239), 1232 states have call predecessors, (2239), 1202 states have call successors, (2239) [2021-12-14 15:39:41,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19766 states to 19766 states and 31153 transitions. [2021-12-14 15:39:41,288 INFO L78 Accepts]: Start accepts. Automaton has 19766 states and 31153 transitions. Word has length 102 [2021-12-14 15:39:41,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:39:41,288 INFO L470 AbstractCegarLoop]: Abstraction has 19766 states and 31153 transitions. [2021-12-14 15:39:41,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:41,289 INFO L276 IsEmpty]: Start isEmpty. Operand 19766 states and 31153 transitions. [2021-12-14 15:39:41,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-14 15:39:41,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:41,337 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:39:41,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:39:41,338 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:41,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:41,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1880616710, now seen corresponding path program 1 times [2021-12-14 15:39:41,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:41,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035304326] [2021-12-14 15:39:41,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:41,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:41,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:41,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 15:39:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:41,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 15:39:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:41,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 15:39:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:41,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:39:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:41,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 15:39:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:41,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 15:39:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:41,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-14 15:39:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:41,468 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-14 15:39:41,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:41,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035304326] [2021-12-14 15:39:41,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035304326] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 15:39:41,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284291650] [2021-12-14 15:39:41,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:41,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 15:39:41,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:39:41,475 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 15:39:41,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 15:39:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:41,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 15:39:41,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 15:39:41,932 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-14 15:39:41,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 15:39:41,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284291650] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:41,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 15:39:41,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-14 15:39:41,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827841824] [2021-12-14 15:39:41,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:41,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:39:41,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:41,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:39:41,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:39:41,935 INFO L87 Difference]: Start difference. First operand 19766 states and 31153 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-14 15:39:43,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:39:43,188 INFO L93 Difference]: Finished difference Result 54681 states and 85501 transitions. [2021-12-14 15:39:43,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:39:43,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 165 [2021-12-14 15:39:43,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:39:43,359 INFO L225 Difference]: With dead ends: 54681 [2021-12-14 15:39:43,359 INFO L226 Difference]: Without dead ends: 37050 [2021-12-14 15:39:43,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:39:43,420 INFO L933 BasicCegarLoop]: 4328 mSDtfsCounter, 4202 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4202 SdHoareTripleChecker+Valid, 4613 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:39:43,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4202 Valid, 4613 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:39:43,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37050 states. [2021-12-14 15:39:45,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37050 to 36850. [2021-12-14 15:39:45,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36850 states, 33128 states have (on average 1.5291898092248248) internal successors, (50659), 33389 states have internal predecessors, (50659), 2352 states have call successors, (2352), 1177 states have call predecessors, (2352), 1368 states have return successors, (4361), 2347 states have call predecessors, (4361), 2350 states have call successors, (4361) [2021-12-14 15:39:45,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36850 states to 36850 states and 57372 transitions. [2021-12-14 15:39:45,438 INFO L78 Accepts]: Start accepts. Automaton has 36850 states and 57372 transitions. Word has length 165 [2021-12-14 15:39:45,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:39:45,439 INFO L470 AbstractCegarLoop]: Abstraction has 36850 states and 57372 transitions. [2021-12-14 15:39:45,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-14 15:39:45,440 INFO L276 IsEmpty]: Start isEmpty. Operand 36850 states and 57372 transitions. [2021-12-14 15:39:45,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-14 15:39:45,509 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:45,509 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:39:45,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 15:39:45,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-14 15:39:45,723 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:45,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:45,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1353738266, now seen corresponding path program 1 times [2021-12-14 15:39:45,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:45,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773665067] [2021-12-14 15:39:45,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:45,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:45,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:45,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 15:39:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:45,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 15:39:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:45,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 15:39:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:45,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:39:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:45,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 15:39:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:45,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 15:39:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:45,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-14 15:39:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-14 15:39:45,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:45,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773665067] [2021-12-14 15:39:45,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773665067] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 15:39:45,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590468782] [2021-12-14 15:39:45,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:45,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 15:39:45,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:39:45,880 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 15:39:45,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 15:39:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:46,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 15:39:46,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 15:39:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-14 15:39:46,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 15:39:46,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590468782] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:46,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 15:39:46,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-14 15:39:46,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67659398] [2021-12-14 15:39:46,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:46,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:39:46,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:46,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:39:46,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:39:46,315 INFO L87 Difference]: Start difference. First operand 36850 states and 57372 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-14 15:39:48,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:39:48,771 INFO L93 Difference]: Finished difference Result 105587 states and 164174 transitions. [2021-12-14 15:39:48,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:39:48,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 165 [2021-12-14 15:39:48,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:39:49,002 INFO L225 Difference]: With dead ends: 105587 [2021-12-14 15:39:49,003 INFO L226 Difference]: Without dead ends: 70872 [2021-12-14 15:39:49,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:39:49,100 INFO L933 BasicCegarLoop]: 4284 mSDtfsCounter, 4220 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4220 SdHoareTripleChecker+Valid, 4569 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:39:49,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4220 Valid, 4569 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:39:49,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70872 states. [2021-12-14 15:39:52,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70872 to 70476. [2021-12-14 15:39:52,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70476 states, 63140 states have (on average 1.5168039277795375) internal successors, (95771), 63659 states have internal predecessors, (95771), 4598 states have call successors, (4598), 2353 states have call predecessors, (4598), 2736 states have return successors, (8555), 4527 states have call predecessors, (8555), 4596 states have call successors, (8555) [2021-12-14 15:39:52,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70476 states to 70476 states and 108924 transitions. [2021-12-14 15:39:52,313 INFO L78 Accepts]: Start accepts. Automaton has 70476 states and 108924 transitions. Word has length 165 [2021-12-14 15:39:52,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:39:52,314 INFO L470 AbstractCegarLoop]: Abstraction has 70476 states and 108924 transitions. [2021-12-14 15:39:52,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-14 15:39:52,314 INFO L276 IsEmpty]: Start isEmpty. Operand 70476 states and 108924 transitions. [2021-12-14 15:39:52,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-14 15:39:52,419 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:52,419 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:39:52,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 15:39:52,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-14 15:39:52,636 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:52,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:52,636 INFO L85 PathProgramCache]: Analyzing trace with hash 201144122, now seen corresponding path program 1 times [2021-12-14 15:39:52,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:52,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843125458] [2021-12-14 15:39:52,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:52,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:52,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:52,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 15:39:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:52,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 15:39:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:52,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 15:39:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:52,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:39:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:52,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 15:39:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:52,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 15:39:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:52,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-14 15:39:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:52,746 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-14 15:39:52,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:52,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843125458] [2021-12-14 15:39:52,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843125458] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 15:39:52,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209992408] [2021-12-14 15:39:52,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:52,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 15:39:52,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:39:52,748 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 15:39:52,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 15:39:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:53,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 15:39:53,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 15:39:53,372 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 15:39:53,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 15:39:53,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209992408] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:53,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 15:39:53,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-14 15:39:53,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409598231] [2021-12-14 15:39:53,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:53,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:39:53,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:53,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:39:53,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:39:53,374 INFO L87 Difference]: Start difference. First operand 70476 states and 108924 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)