./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.12.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.12.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ad834a4fb5f4154353fe834bdf1b25d8394c06509e997c3a1b1b485e0c0b77f0 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:04:29,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:04:29,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:04:29,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:04:29,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:04:29,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:04:29,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:04:29,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:04:29,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:04:29,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:04:29,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:04:29,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:04:29,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:04:29,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:04:29,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:04:29,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:04:29,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:04:29,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:04:29,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:04:29,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:04:29,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:04:29,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:04:29,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:04:29,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:04:29,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:04:29,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:04:29,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:04:29,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:04:29,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:04:29,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:04:29,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:04:29,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:04:29,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:04:29,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:04:29,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:04:29,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:04:29,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:04:29,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:04:29,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:04:29,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:04:29,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:04:29,437 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:04:29,456 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:04:29,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:04:29,457 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:04:29,457 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:04:29,458 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:04:29,458 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:04:29,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:04:29,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:04:29,459 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:04:29,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:04:29,459 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:04:29,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:04:29,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:04:29,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:04:29,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:04:29,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:04:29,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:04:29,461 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:04:29,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:04:29,461 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:04:29,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:04:29,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:04:29,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:04:29,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:04:29,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:04:29,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:04:29,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:04:29,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:04:29,463 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:04:29,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:04:29,463 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:04:29,464 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:04:29,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:04:29,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:04:29,464 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad834a4fb5f4154353fe834bdf1b25d8394c06509e997c3a1b1b485e0c0b77f0 [2021-12-16 02:04:29,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:04:29,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:04:29,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:04:29,687 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:04:29,688 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:04:29,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.12.cil-1.c [2021-12-16 02:04:29,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cb1d8bb0/f48f15caf0a14a4fa199ef722942fb14/FLAGa60f0ce2a [2021-12-16 02:04:30,517 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:04:30,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.12.cil-1.c [2021-12-16 02:04:30,568 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cb1d8bb0/f48f15caf0a14a4fa199ef722942fb14/FLAGa60f0ce2a [2021-12-16 02:04:30,774 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cb1d8bb0/f48f15caf0a14a4fa199ef722942fb14 [2021-12-16 02:04:30,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:04:30,778 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:04:30,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:04:30,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:04:30,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:04:30,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:04:30" (1/1) ... [2021-12-16 02:04:30,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d319f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:04:30, skipping insertion in model container [2021-12-16 02:04:30,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:04:30" (1/1) ... [2021-12-16 02:04:30,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:04:30,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:04:32,164 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.12.cil-1.c[380593,380606] [2021-12-16 02:04:32,182 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.12.cil-1.c[383339,383352] [2021-12-16 02:04:32,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:04:32,446 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:04:33,094 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.12.cil-1.c[380593,380606] [2021-12-16 02:04:33,101 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.12.cil-1.c[383339,383352] [2021-12-16 02:04:33,139 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:04:33,179 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:04:33,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:04:33 WrapperNode [2021-12-16 02:04:33,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:04:33,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:04:33,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:04:33,181 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:04:33,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:04:33" (1/1) ... [2021-12-16 02:04:33,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:04:33" (1/1) ... [2021-12-16 02:04:33,619 INFO L137 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13204 [2021-12-16 02:04:33,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:04:33,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:04:33,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:04:33,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:04:33,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:04:33" (1/1) ... [2021-12-16 02:04:33,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:04:33" (1/1) ... [2021-12-16 02:04:33,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:04:33" (1/1) ... [2021-12-16 02:04:33,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:04:33" (1/1) ... [2021-12-16 02:04:34,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:04:33" (1/1) ... [2021-12-16 02:04:34,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:04:33" (1/1) ... [2021-12-16 02:04:34,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:04:33" (1/1) ... [2021-12-16 02:04:34,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:04:34,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:04:34,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:04:34,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:04:34,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:04:33" (1/1) ... [2021-12-16 02:04:34,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:04:34,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:04:34,220 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) [2021-12-16 02:04:34,255 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 [2021-12-16 02:04:34,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:04:34,280 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-16 02:04:34,280 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-16 02:04:34,280 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-16 02:04:34,280 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-16 02:04:34,281 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-16 02:04:34,281 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-16 02:04:34,281 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-16 02:04:34,281 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-16 02:04:34,281 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-16 02:04:34,281 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-16 02:04:34,282 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-16 02:04:34,282 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-16 02:04:34,282 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-16 02:04:34,282 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-16 02:04:34,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:04:34,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:04:34,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:04:34,427 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:04:34,428 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:04:39,377 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:04:39,420 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:04:39,420 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-16 02:04:39,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:04:39 BoogieIcfgContainer [2021-12-16 02:04:39,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:04:39,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:04:39,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:04:39,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:04:39,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:04:30" (1/3) ... [2021-12-16 02:04:39,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a94ed13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:04:39, skipping insertion in model container [2021-12-16 02:04:39,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:04:33" (2/3) ... [2021-12-16 02:04:39,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a94ed13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:04:39, skipping insertion in model container [2021-12-16 02:04:39,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:04:39" (3/3) ... [2021-12-16 02:04:39,432 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.12.cil-1.c [2021-12-16 02:04:39,436 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:04:39,436 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 02:04:39,476 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:04:39,482 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 [2021-12-16 02:04:39,482 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 02:04:39,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 2573 states, 2535 states have (on average 1.8433925049309665) internal successors, (4673), 2540 states have internal predecessors, (4673), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-16 02:04:39,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 02:04:39,536 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:04:39,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:04:39,538 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:04:39,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:04:39,543 INFO L85 PathProgramCache]: Analyzing trace with hash -354915978, now seen corresponding path program 1 times [2021-12-16 02:04:39,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:04:39,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692205874] [2021-12-16 02:04:39,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:04:39,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:04:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:39,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:04:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:39,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 02:04:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:39,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:04:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:39,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 02:04:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:40,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-16 02:04:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:40,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:04:40,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:04:40,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692205874] [2021-12-16 02:04:40,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692205874] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:04:40,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:04:40,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 02:04:40,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752091678] [2021-12-16 02:04:40,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:04:40,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 02:04:40,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:04:40,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 02:04:40,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 02:04:40,081 INFO L87 Difference]: Start difference. First operand has 2573 states, 2535 states have (on average 1.8433925049309665) internal successors, (4673), 2540 states have internal predecessors, (4673), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-16 02:04:41,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:04:41,664 INFO L93 Difference]: Finished difference Result 5281 states and 9692 transitions. [2021-12-16 02:04:41,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 02:04:41,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 179 [2021-12-16 02:04:41,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:04:41,686 INFO L225 Difference]: With dead ends: 5281 [2021-12-16 02:04:41,686 INFO L226 Difference]: Without dead ends: 2647 [2021-12-16 02:04:41,697 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 [2021-12-16 02:04:41,700 INFO L933 BasicCegarLoop]: 4695 mSDtfsCounter, 1048 mSDsluCounter, 12503 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 17198 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:04:41,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 17198 Invalid, 767 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 02:04:41,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2021-12-16 02:04:41,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2505. [2021-12-16 02:04:41,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2469 states have (on average 1.8266504657756177) internal successors, (4510), 2472 states have internal predecessors, (4510), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-16 02:04:41,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4564 transitions. [2021-12-16 02:04:41,819 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4564 transitions. Word has length 179 [2021-12-16 02:04:41,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:04:41,819 INFO L470 AbstractCegarLoop]: Abstraction has 2505 states and 4564 transitions. [2021-12-16 02:04:41,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-16 02:04:41,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4564 transitions. [2021-12-16 02:04:41,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 02:04:41,824 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:04:41,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:04:41,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:04:41,825 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:04:41,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:04:41,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1148182328, now seen corresponding path program 1 times [2021-12-16 02:04:41,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:04:41,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843141093] [2021-12-16 02:04:41,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:04:41,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:04:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:41,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:04:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:41,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 02:04:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:41,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:04:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:42,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 02:04:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:42,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-16 02:04:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:42,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:04:42,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:04:42,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843141093] [2021-12-16 02:04:42,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843141093] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:04:42,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:04:42,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 02:04:42,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988998759] [2021-12-16 02:04:42,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:04:42,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 02:04:42,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:04:42,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 02:04:42,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 02:04:42,046 INFO L87 Difference]: Start difference. First operand 2505 states and 4564 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-16 02:04:43,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:04:43,385 INFO L93 Difference]: Finished difference Result 3016 states and 5390 transitions. [2021-12-16 02:04:43,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 02:04:43,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 179 [2021-12-16 02:04:43,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:04:43,395 INFO L225 Difference]: With dead ends: 3016 [2021-12-16 02:04:43,396 INFO L226 Difference]: Without dead ends: 2647 [2021-12-16 02:04:43,398 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 [2021-12-16 02:04:43,399 INFO L933 BasicCegarLoop]: 4625 mSDtfsCounter, 1034 mSDsluCounter, 12300 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 16925 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 02:04:43,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1058 Valid, 16925 Invalid, 766 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 02:04:43,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2021-12-16 02:04:43,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2505. [2021-12-16 02:04:43,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2469 states have (on average 1.8262454434993924) internal successors, (4509), 2472 states have internal predecessors, (4509), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-16 02:04:43,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4563 transitions. [2021-12-16 02:04:43,467 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4563 transitions. Word has length 179 [2021-12-16 02:04:43,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:04:43,468 INFO L470 AbstractCegarLoop]: Abstraction has 2505 states and 4563 transitions. [2021-12-16 02:04:43,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-16 02:04:43,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4563 transitions. [2021-12-16 02:04:43,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 02:04:43,471 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:04:43,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:04:43,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:04:43,473 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:04:43,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:04:43,473 INFO L85 PathProgramCache]: Analyzing trace with hash 577910522, now seen corresponding path program 1 times [2021-12-16 02:04:43,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:04:43,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762486231] [2021-12-16 02:04:43,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:04:43,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:04:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:43,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:04:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:43,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 02:04:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:43,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:04:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:43,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 02:04:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:43,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-16 02:04:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:43,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:04:43,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:04:43,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762486231] [2021-12-16 02:04:43,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762486231] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:04:43,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:04:43,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:04:43,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527997019] [2021-12-16 02:04:43,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:04:43,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:04:43,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:04:43,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:04:43,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:04:43,687 INFO L87 Difference]: Start difference. First operand 2505 states and 4563 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2021-12-16 02:04:46,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:04:46,401 INFO L93 Difference]: Finished difference Result 3535 states and 6234 transitions. [2021-12-16 02:04:46,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 02:04:46,401 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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 179 [2021-12-16 02:04:46,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:04:46,413 INFO L225 Difference]: With dead ends: 3535 [2021-12-16 02:04:46,413 INFO L226 Difference]: Without dead ends: 3171 [2021-12-16 02:04:46,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:04:46,422 INFO L933 BasicCegarLoop]: 4677 mSDtfsCounter, 5525 mSDsluCounter, 12916 mSDsCounter, 0 mSdLazyCounter, 1956 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5544 SdHoareTripleChecker+Valid, 17593 SdHoareTripleChecker+Invalid, 2080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-16 02:04:46,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5544 Valid, 17593 Invalid, 2080 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 1956 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-16 02:04:46,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2021-12-16 02:04:46,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 2886. [2021-12-16 02:04:46,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2822 states have (on average 1.7983699503897945) internal successors, (5075), 2826 states have internal predecessors, (5075), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-12-16 02:04:46,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 5174 transitions. [2021-12-16 02:04:46,501 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 5174 transitions. Word has length 179 [2021-12-16 02:04:46,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:04:46,501 INFO L470 AbstractCegarLoop]: Abstraction has 2886 states and 5174 transitions. [2021-12-16 02:04:46,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2021-12-16 02:04:46,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 5174 transitions. [2021-12-16 02:04:46,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 02:04:46,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:04:46,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:04:46,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 02:04:46,504 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:04:46,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:04:46,504 INFO L85 PathProgramCache]: Analyzing trace with hash -807829258, now seen corresponding path program 1 times [2021-12-16 02:04:46,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:04:46,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234214012] [2021-12-16 02:04:46,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:04:46,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:04:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:46,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:04:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:46,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 02:04:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:46,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:04:46,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:46,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 02:04:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:46,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-16 02:04:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:46,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:04:46,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:04:46,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234214012] [2021-12-16 02:04:46,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234214012] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:04:46,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:04:46,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:04:46,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421820054] [2021-12-16 02:04:46,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:04:46,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:04:46,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:04:46,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:04:46,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:04:46,651 INFO L87 Difference]: Start difference. First operand 2886 states and 5174 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 02:04:49,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:04:49,749 INFO L93 Difference]: Finished difference Result 4458 states and 7728 transitions. [2021-12-16 02:04:49,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:04:49,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-16 02:04:49,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:04:49,770 INFO L225 Difference]: With dead ends: 4458 [2021-12-16 02:04:49,771 INFO L226 Difference]: Without dead ends: 3713 [2021-12-16 02:04:49,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:04:49,776 INFO L933 BasicCegarLoop]: 4988 mSDtfsCounter, 5553 mSDsluCounter, 17851 mSDsCounter, 0 mSdLazyCounter, 3072 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5572 SdHoareTripleChecker+Valid, 22839 SdHoareTripleChecker+Invalid, 3152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-16 02:04:49,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5572 Valid, 22839 Invalid, 3152 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 3072 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-16 02:04:49,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2021-12-16 02:04:49,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3240. [2021-12-16 02:04:49,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3240 states, 3148 states have (on average 1.7747776365946633) internal successors, (5587), 3153 states have internal predecessors, (5587), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2021-12-16 02:04:49,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3240 states to 3240 states and 5730 transitions. [2021-12-16 02:04:49,888 INFO L78 Accepts]: Start accepts. Automaton has 3240 states and 5730 transitions. Word has length 179 [2021-12-16 02:04:49,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:04:49,889 INFO L470 AbstractCegarLoop]: Abstraction has 3240 states and 5730 transitions. [2021-12-16 02:04:49,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 02:04:49,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3240 states and 5730 transitions. [2021-12-16 02:04:49,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 02:04:49,891 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:04:49,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:04:49,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 02:04:49,892 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:04:49,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:04:49,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1717666424, now seen corresponding path program 1 times [2021-12-16 02:04:49,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:04:49,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354884430] [2021-12-16 02:04:49,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:04:49,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:04:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:49,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:04:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:49,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 02:04:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:50,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:04:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:50,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 02:04:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:50,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-16 02:04:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:50,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:04:50,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:04:50,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354884430] [2021-12-16 02:04:50,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354884430] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:04:50,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:04:50,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:04:50,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407546190] [2021-12-16 02:04:50,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:04:50,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:04:50,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:04:50,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:04:50,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:04:50,050 INFO L87 Difference]: Start difference. First operand 3240 states and 5730 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 02:04:53,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:04:53,025 INFO L93 Difference]: Finished difference Result 5819 states and 9912 transitions. [2021-12-16 02:04:53,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:04:53,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-16 02:04:53,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:04:53,050 INFO L225 Difference]: With dead ends: 5819 [2021-12-16 02:04:53,051 INFO L226 Difference]: Without dead ends: 4720 [2021-12-16 02:04:53,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:04:53,060 INFO L933 BasicCegarLoop]: 4721 mSDtfsCounter, 5664 mSDsluCounter, 17170 mSDsCounter, 0 mSdLazyCounter, 2725 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5683 SdHoareTripleChecker+Valid, 21891 SdHoareTripleChecker+Invalid, 2848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-16 02:04:53,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5683 Valid, 21891 Invalid, 2848 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 2725 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-16 02:04:53,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4720 states. [2021-12-16 02:04:53,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4720 to 3949. [2021-12-16 02:04:53,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3949 states, 3801 states have (on average 1.739542225730071) internal successors, (6612), 3808 states have internal predecessors, (6612), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-16 02:04:53,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3949 states to 3949 states and 6847 transitions. [2021-12-16 02:04:53,227 INFO L78 Accepts]: Start accepts. Automaton has 3949 states and 6847 transitions. Word has length 179 [2021-12-16 02:04:53,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:04:53,227 INFO L470 AbstractCegarLoop]: Abstraction has 3949 states and 6847 transitions. [2021-12-16 02:04:53,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 02:04:53,228 INFO L276 IsEmpty]: Start isEmpty. Operand 3949 states and 6847 transitions. [2021-12-16 02:04:53,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 02:04:53,230 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:04:53,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:04:53,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 02:04:53,231 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:04:53,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:04:53,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1106397366, now seen corresponding path program 1 times [2021-12-16 02:04:53,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:04:53,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398388752] [2021-12-16 02:04:53,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:04:53,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:04:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:53,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:04:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:53,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 02:04:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:53,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:04:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:53,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 02:04:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:53,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-16 02:04:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:53,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:04:53,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:04:53,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398388752] [2021-12-16 02:04:53,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398388752] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:04:53,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:04:53,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:04:53,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760316922] [2021-12-16 02:04:53,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:04:53,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:04:53,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:04:53,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:04:53,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:04:53,390 INFO L87 Difference]: Start difference. First operand 3949 states and 6847 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 02:04:57,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:04:57,060 INFO L93 Difference]: Finished difference Result 8436 states and 14085 transitions. [2021-12-16 02:04:57,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:04:57,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-16 02:04:57,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:04:57,098 INFO L225 Difference]: With dead ends: 8436 [2021-12-16 02:04:57,099 INFO L226 Difference]: Without dead ends: 6628 [2021-12-16 02:04:57,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:04:57,111 INFO L933 BasicCegarLoop]: 4976 mSDtfsCounter, 5548 mSDsluCounter, 17847 mSDsCounter, 0 mSdLazyCounter, 3075 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5567 SdHoareTripleChecker+Valid, 22823 SdHoareTripleChecker+Invalid, 3160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-16 02:04:57,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5567 Valid, 22823 Invalid, 3160 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 3075 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-16 02:04:57,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6628 states. [2021-12-16 02:04:57,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6628 to 5368. [2021-12-16 02:04:57,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5368 states, 5108 states have (on average 1.6957713390759592) internal successors, (8662), 5119 states have internal predecessors, (8662), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2021-12-16 02:04:57,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5368 states to 5368 states and 9087 transitions. [2021-12-16 02:04:57,399 INFO L78 Accepts]: Start accepts. Automaton has 5368 states and 9087 transitions. Word has length 179 [2021-12-16 02:04:57,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:04:57,400 INFO L470 AbstractCegarLoop]: Abstraction has 5368 states and 9087 transitions. [2021-12-16 02:04:57,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 02:04:57,400 INFO L276 IsEmpty]: Start isEmpty. Operand 5368 states and 9087 transitions. [2021-12-16 02:04:57,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 02:04:57,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:04:57,405 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:04:57,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 02:04:57,405 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:04:57,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:04:57,406 INFO L85 PathProgramCache]: Analyzing trace with hash -298794312, now seen corresponding path program 1 times [2021-12-16 02:04:57,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:04:57,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022337104] [2021-12-16 02:04:57,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:04:57,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:04:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:57,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:04:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:57,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 02:04:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:57,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:04:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:57,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 02:04:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:57,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-16 02:04:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:04:57,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:04:57,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:04:57,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022337104] [2021-12-16 02:04:57,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022337104] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:04:57,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:04:57,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:04:57,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072401273] [2021-12-16 02:04:57,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:04:57,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:04:57,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:04:57,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:04:57,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:04:57,622 INFO L87 Difference]: Start difference. First operand 5368 states and 9087 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 02:05:01,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:05:01,335 INFO L93 Difference]: Finished difference Result 13662 states and 22435 transitions. [2021-12-16 02:05:01,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:05:01,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-16 02:05:01,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:05:01,395 INFO L225 Difference]: With dead ends: 13662 [2021-12-16 02:05:01,395 INFO L226 Difference]: Without dead ends: 10435 [2021-12-16 02:05:01,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:05:01,412 INFO L933 BasicCegarLoop]: 4968 mSDtfsCounter, 5543 mSDsluCounter, 17847 mSDsCounter, 0 mSdLazyCounter, 3055 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5562 SdHoareTripleChecker+Valid, 22815 SdHoareTripleChecker+Invalid, 3141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-16 02:05:01,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5562 Valid, 22815 Invalid, 3141 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3055 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-16 02:05:01,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10435 states. [2021-12-16 02:05:01,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10435 to 8220. [2021-12-16 02:05:01,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8220 states, 7736 states have (on average 1.6527921406411583) internal successors, (12786), 7755 states have internal predecessors, (12786), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2021-12-16 02:05:01,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8220 states to 8220 states and 13609 transitions. [2021-12-16 02:05:01,843 INFO L78 Accepts]: Start accepts. Automaton has 8220 states and 13609 transitions. Word has length 179 [2021-12-16 02:05:01,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:05:01,844 INFO L470 AbstractCegarLoop]: Abstraction has 8220 states and 13609 transitions. [2021-12-16 02:05:01,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 02:05:01,844 INFO L276 IsEmpty]: Start isEmpty. Operand 8220 states and 13609 transitions. [2021-12-16 02:05:01,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 02:05:01,851 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:05:01,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:05:01,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 02:05:01,852 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:05:01,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:05:01,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1147786554, now seen corresponding path program 1 times [2021-12-16 02:05:01,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:05:01,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010572791] [2021-12-16 02:05:01,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:05:01,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:05:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:01,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:05:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:01,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 02:05:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:01,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:05:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:01,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 02:05:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:01,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-16 02:05:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:02,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:05:02,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:05:02,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010572791] [2021-12-16 02:05:02,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010572791] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:05:02,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:05:02,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:05:02,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924528669] [2021-12-16 02:05:02,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:05:02,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:05:02,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:05:02,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:05:02,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:05:02,003 INFO L87 Difference]: Start difference. First operand 8220 states and 13609 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 02:05:05,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:05:05,650 INFO L93 Difference]: Finished difference Result 24132 states and 39227 transitions. [2021-12-16 02:05:05,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:05:05,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-16 02:05:05,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:05:05,706 INFO L225 Difference]: With dead ends: 24132 [2021-12-16 02:05:05,706 INFO L226 Difference]: Without dead ends: 18053 [2021-12-16 02:05:05,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:05:05,727 INFO L933 BasicCegarLoop]: 4963 mSDtfsCounter, 5542 mSDsluCounter, 17847 mSDsCounter, 0 mSdLazyCounter, 3047 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5561 SdHoareTripleChecker+Valid, 22810 SdHoareTripleChecker+Invalid, 3133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-16 02:05:05,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5561 Valid, 22810 Invalid, 3133 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3047 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-16 02:05:05,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18053 states. [2021-12-16 02:05:06,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18053 to 13937. [2021-12-16 02:05:06,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13937 states, 13005 states have (on average 1.6187620146097654) internal successors, (21052), 13040 states have internal predecessors, (21052), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-16 02:05:06,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13937 states to 13937 states and 22725 transitions. [2021-12-16 02:05:06,322 INFO L78 Accepts]: Start accepts. Automaton has 13937 states and 22725 transitions. Word has length 179 [2021-12-16 02:05:06,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:05:06,323 INFO L470 AbstractCegarLoop]: Abstraction has 13937 states and 22725 transitions. [2021-12-16 02:05:06,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 02:05:06,323 INFO L276 IsEmpty]: Start isEmpty. Operand 13937 states and 22725 transitions. [2021-12-16 02:05:06,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 02:05:06,329 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:05:06,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:05:06,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 02:05:06,330 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:05:06,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:05:06,330 INFO L85 PathProgramCache]: Analyzing trace with hash 224619128, now seen corresponding path program 1 times [2021-12-16 02:05:06,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:05:06,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996841236] [2021-12-16 02:05:06,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:05:06,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:05:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:06,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:05:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:06,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 02:05:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:06,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:05:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:06,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 02:05:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:06,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-16 02:05:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:06,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:05:06,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:05:06,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996841236] [2021-12-16 02:05:06,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996841236] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:05:06,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:05:06,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:05:06,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918945189] [2021-12-16 02:05:06,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:05:06,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:05:06,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:05:06,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:05:06,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:05:06,541 INFO L87 Difference]: Start difference. First operand 13937 states and 22725 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 02:05:08,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:05:08,621 INFO L93 Difference]: Finished difference Result 30100 states and 49050 transitions. [2021-12-16 02:05:08,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:05:08,622 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-16 02:05:08,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:05:08,679 INFO L225 Difference]: With dead ends: 30100 [2021-12-16 02:05:08,679 INFO L226 Difference]: Without dead ends: 18304 [2021-12-16 02:05:08,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:05:08,718 INFO L933 BasicCegarLoop]: 4601 mSDtfsCounter, 5093 mSDsluCounter, 16797 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5113 SdHoareTripleChecker+Valid, 21398 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 02:05:08,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5113 Valid, 21398 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 02:05:08,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18304 states. [2021-12-16 02:05:09,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18304 to 13937. [2021-12-16 02:05:09,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13937 states, 13005 states have (on average 1.6162245290272972) internal successors, (21019), 13040 states have internal predecessors, (21019), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-16 02:05:09,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13937 states to 13937 states and 22692 transitions. [2021-12-16 02:05:09,441 INFO L78 Accepts]: Start accepts. Automaton has 13937 states and 22692 transitions. Word has length 179 [2021-12-16 02:05:09,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:05:09,441 INFO L470 AbstractCegarLoop]: Abstraction has 13937 states and 22692 transitions. [2021-12-16 02:05:09,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 02:05:09,441 INFO L276 IsEmpty]: Start isEmpty. Operand 13937 states and 22692 transitions. [2021-12-16 02:05:09,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 02:05:09,448 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:05:09,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:05:09,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 02:05:09,448 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:05:09,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:05:09,449 INFO L85 PathProgramCache]: Analyzing trace with hash 610481530, now seen corresponding path program 1 times [2021-12-16 02:05:09,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:05:09,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370531354] [2021-12-16 02:05:09,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:05:09,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:05:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:09,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:05:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:09,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 02:05:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:09,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:05:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:09,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 02:05:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:09,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-16 02:05:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:09,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:05:09,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:05:09,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370531354] [2021-12-16 02:05:09,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370531354] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:05:09,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:05:09,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:05:09,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748638585] [2021-12-16 02:05:09,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:05:09,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:05:09,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:05:09,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:05:09,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:05:09,572 INFO L87 Difference]: Start difference. First operand 13937 states and 22692 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 02:05:11,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:05:11,680 INFO L93 Difference]: Finished difference Result 30066 states and 48883 transitions. [2021-12-16 02:05:11,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:05:11,681 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-16 02:05:11,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:05:11,738 INFO L225 Difference]: With dead ends: 30066 [2021-12-16 02:05:11,739 INFO L226 Difference]: Without dead ends: 18270 [2021-12-16 02:05:11,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:05:11,770 INFO L933 BasicCegarLoop]: 4597 mSDtfsCounter, 5258 mSDsluCounter, 12637 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5278 SdHoareTripleChecker+Valid, 17234 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:05:11,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5278 Valid, 17234 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:05:11,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18270 states. [2021-12-16 02:05:12,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18270 to 13937. [2021-12-16 02:05:12,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13937 states, 13005 states have (on average 1.613687043444829) internal successors, (20986), 13040 states have internal predecessors, (20986), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-16 02:05:12,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13937 states to 13937 states and 22659 transitions. [2021-12-16 02:05:12,466 INFO L78 Accepts]: Start accepts. Automaton has 13937 states and 22659 transitions. Word has length 179 [2021-12-16 02:05:12,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:05:12,466 INFO L470 AbstractCegarLoop]: Abstraction has 13937 states and 22659 transitions. [2021-12-16 02:05:12,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 02:05:12,467 INFO L276 IsEmpty]: Start isEmpty. Operand 13937 states and 22659 transitions. [2021-12-16 02:05:12,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 02:05:12,473 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:05:12,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:05:12,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 02:05:12,474 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:05:12,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:05:12,474 INFO L85 PathProgramCache]: Analyzing trace with hash 345834040, now seen corresponding path program 1 times [2021-12-16 02:05:12,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:05:12,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204633500] [2021-12-16 02:05:12,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:05:12,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:05:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:12,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:05:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:12,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 02:05:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:12,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:05:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:12,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 02:05:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:12,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-16 02:05:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:12,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:05:12,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:05:12,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204633500] [2021-12-16 02:05:12,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204633500] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:05:12,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:05:12,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:05:12,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817622024] [2021-12-16 02:05:12,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:05:12,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:05:12,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:05:12,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:05:12,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:05:12,595 INFO L87 Difference]: Start difference. First operand 13937 states and 22659 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 02:05:16,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:05:16,846 INFO L93 Difference]: Finished difference Result 45003 states and 72537 transitions. [2021-12-16 02:05:16,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:05:16,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-16 02:05:16,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:05:16,939 INFO L225 Difference]: With dead ends: 45003 [2021-12-16 02:05:16,940 INFO L226 Difference]: Without dead ends: 33207 [2021-12-16 02:05:16,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:05:16,966 INFO L933 BasicCegarLoop]: 4946 mSDtfsCounter, 5527 mSDsluCounter, 17847 mSDsCounter, 0 mSdLazyCounter, 3001 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5546 SdHoareTripleChecker+Valid, 22793 SdHoareTripleChecker+Invalid, 3087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-16 02:05:16,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5546 Valid, 22793 Invalid, 3087 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3001 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-16 02:05:16,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33207 states. [2021-12-16 02:05:18,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33207 to 25468. [2021-12-16 02:05:18,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25468 states, 23640 states have (on average 1.58917089678511) internal successors, (37568), 23707 states have internal predecessors, (37568), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2021-12-16 02:05:18,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25468 states to 25468 states and 41103 transitions. [2021-12-16 02:05:18,152 INFO L78 Accepts]: Start accepts. Automaton has 25468 states and 41103 transitions. Word has length 179 [2021-12-16 02:05:18,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:05:18,152 INFO L470 AbstractCegarLoop]: Abstraction has 25468 states and 41103 transitions. [2021-12-16 02:05:18,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 02:05:18,152 INFO L276 IsEmpty]: Start isEmpty. Operand 25468 states and 41103 transitions. [2021-12-16 02:05:18,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 02:05:18,166 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:05:18,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:05:18,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 02:05:18,167 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:05:18,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:05:18,168 INFO L85 PathProgramCache]: Analyzing trace with hash -2018007622, now seen corresponding path program 1 times [2021-12-16 02:05:18,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:05:18,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932394070] [2021-12-16 02:05:18,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:05:18,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:05:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:18,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:05:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:18,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 02:05:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:18,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:05:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:18,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 02:05:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:18,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-16 02:05:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:18,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:05:18,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:05:18,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932394070] [2021-12-16 02:05:18,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932394070] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:05:18,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:05:18,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:05:18,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76838716] [2021-12-16 02:05:18,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:05:18,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:05:18,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:05:18,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:05:18,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:05:18,391 INFO L87 Difference]: Start difference. First operand 25468 states and 41103 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 02:05:21,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:05:21,361 INFO L93 Difference]: Finished difference Result 56996 states and 92550 transitions. [2021-12-16 02:05:21,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:05:21,362 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-16 02:05:21,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:05:21,459 INFO L225 Difference]: With dead ends: 56996 [2021-12-16 02:05:21,459 INFO L226 Difference]: Without dead ends: 33669 [2021-12-16 02:05:21,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:05:21,506 INFO L933 BasicCegarLoop]: 4558 mSDtfsCounter, 5152 mSDsluCounter, 16796 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 21354 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:05:21,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5172 Valid, 21354 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 02:05:21,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33669 states. [2021-12-16 02:05:22,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33669 to 25468. [2021-12-16 02:05:22,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25468 states, 23640 states have (on average 1.5864213197969543) internal successors, (37503), 23707 states have internal predecessors, (37503), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2021-12-16 02:05:22,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25468 states to 25468 states and 41038 transitions. [2021-12-16 02:05:22,859 INFO L78 Accepts]: Start accepts. Automaton has 25468 states and 41038 transitions. Word has length 179 [2021-12-16 02:05:22,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:05:22,859 INFO L470 AbstractCegarLoop]: Abstraction has 25468 states and 41038 transitions. [2021-12-16 02:05:22,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 02:05:22,859 INFO L276 IsEmpty]: Start isEmpty. Operand 25468 states and 41038 transitions. [2021-12-16 02:05:22,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 02:05:22,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:05:22,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:05:22,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 02:05:22,870 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:05:22,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:05:22,870 INFO L85 PathProgramCache]: Analyzing trace with hash 953780728, now seen corresponding path program 1 times [2021-12-16 02:05:22,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:05:22,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937826726] [2021-12-16 02:05:22,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:05:22,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:05:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:22,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:05:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:22,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 02:05:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:22,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:05:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:22,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 02:05:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:22,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-16 02:05:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:05:22,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:05:22,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:05:22,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937826726] [2021-12-16 02:05:22,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937826726] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:05:22,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:05:22,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:05:22,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349604612] [2021-12-16 02:05:22,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:05:22,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:05:22,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:05:22,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:05:22,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:05:22,980 INFO L87 Difference]: Start difference. First operand 25468 states and 41038 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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)