./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.09.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 858df747258432440d8be7960c85c9b1ad66b3a3b967b98ccb7c6efb60152481 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:39:43,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:39:43,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:39:43,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:39:43,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:39:43,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:39:43,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:39:43,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:39:43,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:39:43,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:39:43,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:39:43,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:39:43,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:39:43,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:39:43,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:39:43,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:39:43,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:39:43,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:39:43,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:39:43,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:39:43,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:39:43,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:39:43,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:39:43,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:39:43,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:39:43,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:39:43,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:39:43,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:39:43,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:39:43,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:39:43,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:39:43,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:39:43,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:39:43,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:39:43,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:39:43,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:39:43,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:39:43,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:39:43,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:39:43,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:39:43,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:39:43,649 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:39:43,662 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:39:43,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:39:43,662 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:39:43,663 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:39:43,663 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:39:43,663 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:39:43,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:39:43,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:39:43,664 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:39:43,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:39:43,664 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:39:43,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:39:43,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:39:43,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:39:43,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:39:43,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:39:43,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:39:43,665 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:39:43,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:39:43,666 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:39:43,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:39:43,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:39:43,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:39:43,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:39:43,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:39:43,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:39:43,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:39:43,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:39:43,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:39:43,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:39:43,667 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:39:43,667 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:39:43,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:39:43,668 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:39:43,668 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 858df747258432440d8be7960c85c9b1ad66b3a3b967b98ccb7c6efb60152481 [2021-12-22 12:39:43,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:39:43,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:39:43,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:39:43,877 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:39:43,878 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:39:43,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.09.cil-1.c [2021-12-22 12:39:43,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cde15400/3a6903733aea4635839e1265be44b828/FLAGa61814f5b [2021-12-22 12:39:44,647 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:39:44,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.09.cil-1.c [2021-12-22 12:39:44,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cde15400/3a6903733aea4635839e1265be44b828/FLAGa61814f5b [2021-12-22 12:39:44,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cde15400/3a6903733aea4635839e1265be44b828 [2021-12-22 12:39:44,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:39:44,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:39:44,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:39:44,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:39:44,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:39:44,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:39:44" (1/1) ... [2021-12-22 12:39:44,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29762cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:44, skipping insertion in model container [2021-12-22 12:39:44,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:39:44" (1/1) ... [2021-12-22 12:39:44,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:39:45,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:39:46,366 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.09.cil-1.c[382357,382370] [2021-12-22 12:39:46,382 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.09.cil-1.c[383339,383352] [2021-12-22 12:39:46,574 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:39:46,580 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:39:47,180 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.09.cil-1.c[382357,382370] [2021-12-22 12:39:47,184 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.09.cil-1.c[383339,383352] [2021-12-22 12:39:47,207 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:39:47,246 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:39:47,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:47 WrapperNode [2021-12-22 12:39:47,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:39:47,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:39:47,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:39:47,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:39:47,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:47" (1/1) ... [2021-12-22 12:39:47,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:47" (1/1) ... [2021-12-22 12:39:47,561 INFO L137 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13025 [2021-12-22 12:39:47,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:39:47,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:39:47,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:39:47,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:39:47,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:47" (1/1) ... [2021-12-22 12:39:47,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:47" (1/1) ... [2021-12-22 12:39:47,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:47" (1/1) ... [2021-12-22 12:39:47,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:47" (1/1) ... [2021-12-22 12:39:47,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:47" (1/1) ... [2021-12-22 12:39:48,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:47" (1/1) ... [2021-12-22 12:39:48,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:47" (1/1) ... [2021-12-22 12:39:48,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:39:48,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:39:48,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:39:48,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:39:48,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:47" (1/1) ... [2021-12-22 12:39:48,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:39:48,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:39:48,228 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 12:39:48,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 12:39:48,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:39:48,257 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-22 12:39:48,257 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-22 12:39:48,257 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-22 12:39:48,258 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-22 12:39:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-22 12:39:48,258 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-22 12:39:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-22 12:39:48,258 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-22 12:39:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-22 12:39:48,258 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-22 12:39:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-22 12:39:48,258 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-22 12:39:48,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:39:48,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:39:48,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:39:48,368 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:39:48,369 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:39:53,161 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:39:53,188 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:39:53,188 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-12-22 12:39:53,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:39:53 BoogieIcfgContainer [2021-12-22 12:39:53,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:39:53,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:39:53,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:39:53,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:39:53,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:39:44" (1/3) ... [2021-12-22 12:39:53,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec2d16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:39:53, skipping insertion in model container [2021-12-22 12:39:53,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:47" (2/3) ... [2021-12-22 12:39:53,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec2d16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:39:53, skipping insertion in model container [2021-12-22 12:39:53,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:39:53" (3/3) ... [2021-12-22 12:39:53,197 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.09.cil-1.c [2021-12-22 12:39:53,202 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:39:53,202 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 12:39:53,238 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:39:53,243 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 12:39:53,243 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 12:39:53,281 INFO L276 IsEmpty]: Start isEmpty. Operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-22 12:39:53,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-22 12:39:53,294 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:53,295 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] [2021-12-22 12:39:53,295 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:53,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:53,299 INFO L85 PathProgramCache]: Analyzing trace with hash -762884387, now seen corresponding path program 1 times [2021-12-22 12:39:53,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:53,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720111359] [2021-12-22 12:39:53,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:53,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:53,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:53,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 12:39:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:53,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 12:39:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:53,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 12:39:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:53,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-22 12:39:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:53,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:53,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:53,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720111359] [2021-12-22 12:39:53,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720111359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:53,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:53,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:39:53,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662538441] [2021-12-22 12:39:53,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:53,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:39:53,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:53,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:39:53,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:39:53,703 INFO L87 Difference]: Start difference. First operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:39:54,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:39:54,825 INFO L93 Difference]: Finished difference Result 5081 states and 9345 transitions. [2021-12-22 12:39:54,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 12:39:54,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-12-22 12:39:54,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:39:54,844 INFO L225 Difference]: With dead ends: 5081 [2021-12-22 12:39:54,844 INFO L226 Difference]: Without dead ends: 2532 [2021-12-22 12:39:54,850 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 [2021-12-22 12:39:54,852 INFO L933 BasicCegarLoop]: 4545 mSDtfsCounter, 807 mSDsluCounter, 12404 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 16949 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 12:39:54,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 16949 Invalid, 601 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 12:39:54,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2021-12-22 12:39:54,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2423. [2021-12-22 12:39:54,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2392 states have (on average 1.8323578595317727) internal successors, (4383), 2394 states have internal predecessors, (4383), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-22 12:39:54,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 4429 transitions. [2021-12-22 12:39:54,961 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 4429 transitions. Word has length 145 [2021-12-22 12:39:54,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:39:54,962 INFO L470 AbstractCegarLoop]: Abstraction has 2423 states and 4429 transitions. [2021-12-22 12:39:54,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:39:54,962 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 4429 transitions. [2021-12-22 12:39:54,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-22 12:39:54,965 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:54,965 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] [2021-12-22 12:39:54,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:39:54,966 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:54,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:54,966 INFO L85 PathProgramCache]: Analyzing trace with hash 854556063, now seen corresponding path program 1 times [2021-12-22 12:39:54,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:54,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544370389] [2021-12-22 12:39:54,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:54,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:55,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:55,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 12:39:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:55,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 12:39:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:55,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 12:39:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:55,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-22 12:39:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:55,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:55,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:55,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544370389] [2021-12-22 12:39:55,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544370389] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:55,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:55,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 12:39:55,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734697461] [2021-12-22 12:39:55,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:55,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 12:39:55,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:55,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 12:39:55,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 12:39:55,206 INFO L87 Difference]: Start difference. First operand 2423 states and 4429 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:39:56,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:39:56,953 INFO L93 Difference]: Finished difference Result 3223 states and 5716 transitions. [2021-12-22 12:39:56,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 12:39:56,953 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-12-22 12:39:56,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:39:56,963 INFO L225 Difference]: With dead ends: 3223 [2021-12-22 12:39:56,963 INFO L226 Difference]: Without dead ends: 2938 [2021-12-22 12:39:56,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-22 12:39:56,966 INFO L933 BasicCegarLoop]: 4516 mSDtfsCounter, 5165 mSDsluCounter, 12682 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5181 SdHoareTripleChecker+Valid, 17198 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:39:56,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5181 Valid, 17198 Invalid, 1628 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-22 12:39:56,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2021-12-22 12:39:57,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2721. [2021-12-22 12:39:57,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.8071294559099438) internal successors, (4816), 2668 states have internal predecessors, (4816), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-22 12:39:57,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4901 transitions. [2021-12-22 12:39:57,026 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4901 transitions. Word has length 145 [2021-12-22 12:39:57,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:39:57,026 INFO L470 AbstractCegarLoop]: Abstraction has 2721 states and 4901 transitions. [2021-12-22 12:39:57,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:39:57,026 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4901 transitions. [2021-12-22 12:39:57,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-22 12:39:57,028 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:57,028 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] [2021-12-22 12:39:57,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:39:57,029 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:57,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:57,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1697407709, now seen corresponding path program 1 times [2021-12-22 12:39:57,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:57,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657759210] [2021-12-22 12:39:57,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:57,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:57,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:57,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 12:39:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:57,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 12:39:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:57,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 12:39:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:57,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-22 12:39:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:57,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:57,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:57,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657759210] [2021-12-22 12:39:57,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657759210] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:57,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:57,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:39:57,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884531206] [2021-12-22 12:39:57,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:57,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:39:57,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:57,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:39:57,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:39:57,172 INFO L87 Difference]: Start difference. First operand 2721 states and 4901 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:39:59,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:39:59,352 INFO L93 Difference]: Finished difference Result 3941 states and 6863 transitions. [2021-12-22 12:39:59,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:39:59,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-12-22 12:39:59,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:39:59,364 INFO L225 Difference]: With dead ends: 3941 [2021-12-22 12:39:59,364 INFO L226 Difference]: Without dead ends: 3358 [2021-12-22 12:39:59,367 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 [2021-12-22 12:39:59,382 INFO L933 BasicCegarLoop]: 4749 mSDtfsCounter, 5187 mSDsluCounter, 17378 mSDsCounter, 0 mSdLazyCounter, 2388 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5203 SdHoareTripleChecker+Valid, 22127 SdHoareTripleChecker+Invalid, 2462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-22 12:39:59,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5203 Valid, 22127 Invalid, 2462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2388 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-22 12:39:59,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2021-12-22 12:39:59,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 2998. [2021-12-22 12:39:59,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2998 states, 2917 states have (on average 1.7850531367843676) internal successors, (5207), 2921 states have internal predecessors, (5207), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2021-12-22 12:39:59,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2998 states to 2998 states and 5330 transitions. [2021-12-22 12:39:59,464 INFO L78 Accepts]: Start accepts. Automaton has 2998 states and 5330 transitions. Word has length 145 [2021-12-22 12:39:59,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:39:59,465 INFO L470 AbstractCegarLoop]: Abstraction has 2998 states and 5330 transitions. [2021-12-22 12:39:59,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:39:59,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2998 states and 5330 transitions. [2021-12-22 12:39:59,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-22 12:39:59,467 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:59,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:39:59,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 12:39:59,467 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:59,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:59,468 INFO L85 PathProgramCache]: Analyzing trace with hash -750369823, now seen corresponding path program 1 times [2021-12-22 12:39:59,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:59,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758023123] [2021-12-22 12:39:59,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:59,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:59,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:59,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 12:39:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:59,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 12:39:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:59,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 12:39:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:59,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-22 12:39:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:59,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:59,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:59,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758023123] [2021-12-22 12:39:59,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758023123] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:59,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:59,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:39:59,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520619935] [2021-12-22 12:39:59,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:59,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:39:59,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:59,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:39:59,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:39:59,580 INFO L87 Difference]: Start difference. First operand 2998 states and 5330 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:40:01,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:40:01,794 INFO L93 Difference]: Finished difference Result 4998 states and 8540 transitions. [2021-12-22 12:40:01,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:40:01,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-12-22 12:40:01,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:40:01,815 INFO L225 Difference]: With dead ends: 4998 [2021-12-22 12:40:01,815 INFO L226 Difference]: Without dead ends: 4138 [2021-12-22 12:40:01,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:40:01,831 INFO L933 BasicCegarLoop]: 4737 mSDtfsCounter, 5181 mSDsluCounter, 17374 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5197 SdHoareTripleChecker+Valid, 22111 SdHoareTripleChecker+Invalid, 2457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-22 12:40:01,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5197 Valid, 22111 Invalid, 2457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-22 12:40:01,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4138 states. [2021-12-22 12:40:01,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4138 to 3556. [2021-12-22 12:40:01,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3425 states have (on average 1.7506569343065694) internal successors, (5996), 3431 states have internal predecessors, (5996), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-22 12:40:01,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 6199 transitions. [2021-12-22 12:40:01,970 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 6199 transitions. Word has length 145 [2021-12-22 12:40:01,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:40:01,971 INFO L470 AbstractCegarLoop]: Abstraction has 3556 states and 6199 transitions. [2021-12-22 12:40:01,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:40:01,975 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 6199 transitions. [2021-12-22 12:40:01,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-22 12:40:01,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:40:01,978 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] [2021-12-22 12:40:01,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 12:40:01,978 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:40:01,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:40:01,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1494188575, now seen corresponding path program 1 times [2021-12-22 12:40:01,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:40:01,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080156896] [2021-12-22 12:40:01,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:40:01,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:40:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:02,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:40:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:02,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 12:40:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:02,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 12:40:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:02,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 12:40:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:02,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-22 12:40:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:02,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:40:02,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:40:02,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080156896] [2021-12-22 12:40:02,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080156896] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:40:02,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:40:02,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:40:02,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241175832] [2021-12-22 12:40:02,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:40:02,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:40:02,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:40:02,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:40:02,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:40:02,113 INFO L87 Difference]: Start difference. First operand 3556 states and 6199 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:40:04,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:40:04,393 INFO L93 Difference]: Finished difference Result 7038 states and 11757 transitions. [2021-12-22 12:40:04,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:40:04,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-12-22 12:40:04,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:40:04,414 INFO L225 Difference]: With dead ends: 7038 [2021-12-22 12:40:04,414 INFO L226 Difference]: Without dead ends: 5620 [2021-12-22 12:40:04,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:40:04,421 INFO L933 BasicCegarLoop]: 4732 mSDtfsCounter, 5180 mSDsluCounter, 17374 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5196 SdHoareTripleChecker+Valid, 22106 SdHoareTripleChecker+Invalid, 2449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-22 12:40:04,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5196 Valid, 22106 Invalid, 2449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-22 12:40:04,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5620 states. [2021-12-22 12:40:04,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5620 to 4673. [2021-12-22 12:40:04,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4673 states, 4442 states have (on average 1.7050877982890589) internal successors, (7574), 4452 states have internal predecessors, (7574), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2021-12-22 12:40:04,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 7943 transitions. [2021-12-22 12:40:04,626 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 7943 transitions. Word has length 145 [2021-12-22 12:40:04,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:40:04,627 INFO L470 AbstractCegarLoop]: Abstraction has 4673 states and 7943 transitions. [2021-12-22 12:40:04,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:40:04,629 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 7943 transitions. [2021-12-22 12:40:04,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-22 12:40:04,631 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:40:04,632 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] [2021-12-22 12:40:04,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 12:40:04,632 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:40:04,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:40:04,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1982235681, now seen corresponding path program 1 times [2021-12-22 12:40:04,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:40:04,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336090500] [2021-12-22 12:40:04,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:40:04,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:40:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:04,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:40:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:04,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 12:40:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:04,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 12:40:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:04,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 12:40:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:04,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-22 12:40:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:04,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:40:04,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:40:04,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336090500] [2021-12-22 12:40:04,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336090500] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:40:04,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:40:04,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:40:04,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947455747] [2021-12-22 12:40:04,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:40:04,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:40:04,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:40:04,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:40:04,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:40:04,747 INFO L87 Difference]: Start difference. First operand 4673 states and 7943 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:40:06,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:40:06,941 INFO L93 Difference]: Finished difference Result 11117 states and 18207 transitions. [2021-12-22 12:40:06,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:40:06,944 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-12-22 12:40:06,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:40:06,982 INFO L225 Difference]: With dead ends: 11117 [2021-12-22 12:40:06,982 INFO L226 Difference]: Without dead ends: 8582 [2021-12-22 12:40:06,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:40:06,996 INFO L933 BasicCegarLoop]: 4727 mSDtfsCounter, 5179 mSDsluCounter, 17374 mSDsCounter, 0 mSdLazyCounter, 2365 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5195 SdHoareTripleChecker+Valid, 22101 SdHoareTripleChecker+Invalid, 2441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-22 12:40:06,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5195 Valid, 22101 Invalid, 2441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2365 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-22 12:40:07,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8582 states. [2021-12-22 12:40:07,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8582 to 6914. [2021-12-22 12:40:07,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6914 states, 6483 states have (on average 1.6566404442387783) internal successors, (10740), 6501 states have internal predecessors, (10740), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2021-12-22 12:40:07,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6914 states to 6914 states and 11459 transitions. [2021-12-22 12:40:07,242 INFO L78 Accepts]: Start accepts. Automaton has 6914 states and 11459 transitions. Word has length 145 [2021-12-22 12:40:07,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:40:07,242 INFO L470 AbstractCegarLoop]: Abstraction has 6914 states and 11459 transitions. [2021-12-22 12:40:07,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:40:07,243 INFO L276 IsEmpty]: Start isEmpty. Operand 6914 states and 11459 transitions. [2021-12-22 12:40:07,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-22 12:40:07,246 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:40:07,246 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] [2021-12-22 12:40:07,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 12:40:07,246 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:40:07,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:40:07,247 INFO L85 PathProgramCache]: Analyzing trace with hash 889600479, now seen corresponding path program 1 times [2021-12-22 12:40:07,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:40:07,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269094827] [2021-12-22 12:40:07,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:40:07,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:40:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:07,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:40:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:07,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 12:40:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:07,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 12:40:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:07,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 12:40:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:07,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-22 12:40:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:07,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:40:07,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:40:07,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269094827] [2021-12-22 12:40:07,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269094827] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:40:07,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:40:07,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:40:07,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181091318] [2021-12-22 12:40:07,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:40:07,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:40:07,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:40:07,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:40:07,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:40:07,350 INFO L87 Difference]: Start difference. First operand 6914 states and 11459 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:40:09,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:40:09,659 INFO L93 Difference]: Finished difference Result 19276 states and 31169 transitions. [2021-12-22 12:40:09,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:40:09,660 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-12-22 12:40:09,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:40:09,697 INFO L225 Difference]: With dead ends: 19276 [2021-12-22 12:40:09,697 INFO L226 Difference]: Without dead ends: 14500 [2021-12-22 12:40:09,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:40:09,717 INFO L933 BasicCegarLoop]: 4535 mSDtfsCounter, 5256 mSDsluCounter, 16871 mSDsCounter, 0 mSdLazyCounter, 2103 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5272 SdHoareTripleChecker+Valid, 21406 SdHoareTripleChecker+Invalid, 2209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-22 12:40:09,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5272 Valid, 21406 Invalid, 2209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2103 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-22 12:40:09,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14500 states. [2021-12-22 12:40:10,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14500 to 11411. [2021-12-22 12:40:10,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11411 states, 10580 states have (on average 1.6156899810964083) internal successors, (17094), 10614 states have internal predecessors, (17094), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2021-12-22 12:40:10,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11411 states to 11411 states and 18567 transitions. [2021-12-22 12:40:10,236 INFO L78 Accepts]: Start accepts. Automaton has 11411 states and 18567 transitions. Word has length 145 [2021-12-22 12:40:10,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:40:10,236 INFO L470 AbstractCegarLoop]: Abstraction has 11411 states and 18567 transitions. [2021-12-22 12:40:10,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:40:10,236 INFO L276 IsEmpty]: Start isEmpty. Operand 11411 states and 18567 transitions. [2021-12-22 12:40:10,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-22 12:40:10,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:40:10,243 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] [2021-12-22 12:40:10,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 12:40:10,244 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:40:10,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:40:10,244 INFO L85 PathProgramCache]: Analyzing trace with hash -392571807, now seen corresponding path program 1 times [2021-12-22 12:40:10,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:40:10,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548171408] [2021-12-22 12:40:10,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:40:10,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:40:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:10,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:40:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:10,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 12:40:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:10,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 12:40:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:10,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 12:40:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:10,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-22 12:40:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:10,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:40:10,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:40:10,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548171408] [2021-12-22 12:40:10,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548171408] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:40:10,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:40:10,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:40:10,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118523970] [2021-12-22 12:40:10,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:40:10,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:40:10,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:40:10,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:40:10,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:40:10,345 INFO L87 Difference]: Start difference. First operand 11411 states and 18567 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:40:11,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:40:11,986 INFO L93 Difference]: Finished difference Result 23942 states and 38818 transitions. [2021-12-22 12:40:11,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 12:40:11,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-12-22 12:40:11,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:40:12,024 INFO L225 Difference]: With dead ends: 23942 [2021-12-22 12:40:12,025 INFO L226 Difference]: Without dead ends: 14669 [2021-12-22 12:40:12,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-22 12:40:12,054 INFO L933 BasicCegarLoop]: 4446 mSDtfsCounter, 4834 mSDsluCounter, 16572 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4851 SdHoareTripleChecker+Valid, 21018 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:40:12,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4851 Valid, 21018 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 12:40:12,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14669 states. [2021-12-22 12:40:12,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14669 to 11411. [2021-12-22 12:40:12,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11411 states, 10580 states have (on average 1.612570888468809) internal successors, (17061), 10614 states have internal predecessors, (17061), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2021-12-22 12:40:12,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11411 states to 11411 states and 18534 transitions. [2021-12-22 12:40:12,659 INFO L78 Accepts]: Start accepts. Automaton has 11411 states and 18534 transitions. Word has length 145 [2021-12-22 12:40:12,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:40:12,662 INFO L470 AbstractCegarLoop]: Abstraction has 11411 states and 18534 transitions. [2021-12-22 12:40:12,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:40:12,662 INFO L276 IsEmpty]: Start isEmpty. Operand 11411 states and 18534 transitions. [2021-12-22 12:40:12,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-22 12:40:12,668 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:40:12,669 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] [2021-12-22 12:40:12,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 12:40:12,669 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:40:12,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:40:12,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2059919775, now seen corresponding path program 1 times [2021-12-22 12:40:12,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:40:12,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610210485] [2021-12-22 12:40:12,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:40:12,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:40:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:12,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:40:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:12,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 12:40:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:12,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 12:40:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:12,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 12:40:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:12,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-22 12:40:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:12,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:40:12,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:40:12,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610210485] [2021-12-22 12:40:12,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610210485] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:40:12,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:40:12,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:40:12,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367532002] [2021-12-22 12:40:12,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:40:12,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:40:12,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:40:12,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:40:12,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:40:12,773 INFO L87 Difference]: Start difference. First operand 11411 states and 18534 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:40:15,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:40:15,869 INFO L93 Difference]: Finished difference Result 35561 states and 57055 transitions. [2021-12-22 12:40:15,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:40:15,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-12-22 12:40:15,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:40:15,942 INFO L225 Difference]: With dead ends: 35561 [2021-12-22 12:40:15,942 INFO L226 Difference]: Without dead ends: 26288 [2021-12-22 12:40:15,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:40:15,971 INFO L933 BasicCegarLoop]: 4711 mSDtfsCounter, 5170 mSDsluCounter, 17374 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5186 SdHoareTripleChecker+Valid, 22085 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-22 12:40:15,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5186 Valid, 22085 Invalid, 2406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-22 12:40:15,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26288 states. [2021-12-22 12:40:16,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26288 to 20469. [2021-12-22 12:40:16,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20469 states, 18838 states have (on average 1.5828113387833103) internal successors, (29817), 18904 states have internal predecessors, (29817), 1175 states have call successors, (1175), 390 states have call predecessors, (1175), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2021-12-22 12:40:17,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20469 states to 20469 states and 32960 transitions. [2021-12-22 12:40:17,045 INFO L78 Accepts]: Start accepts. Automaton has 20469 states and 32960 transitions. Word has length 145 [2021-12-22 12:40:17,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:40:17,046 INFO L470 AbstractCegarLoop]: Abstraction has 20469 states and 32960 transitions. [2021-12-22 12:40:17,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:40:17,046 INFO L276 IsEmpty]: Start isEmpty. Operand 20469 states and 32960 transitions. [2021-12-22 12:40:17,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-22 12:40:17,057 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:40:17,057 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] [2021-12-22 12:40:17,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 12:40:17,057 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:40:17,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:40:17,057 INFO L85 PathProgramCache]: Analyzing trace with hash 337917089, now seen corresponding path program 1 times [2021-12-22 12:40:17,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:40:17,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847627719] [2021-12-22 12:40:17,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:40:17,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:40:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:17,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:40:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:17,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 12:40:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:17,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 12:40:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:17,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 12:40:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:17,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-22 12:40:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:17,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:40:17,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:40:17,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847627719] [2021-12-22 12:40:17,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847627719] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:40:17,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:40:17,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:40:17,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922525569] [2021-12-22 12:40:17,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:40:17,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:40:17,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:40:17,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:40:17,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:40:17,174 INFO L87 Difference]: Start difference. First operand 20469 states and 32960 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:40:21,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:40:21,940 INFO L93 Difference]: Finished difference Result 68201 states and 109703 transitions. [2021-12-22 12:40:21,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:40:21,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-12-22 12:40:21,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:40:22,107 INFO L225 Difference]: With dead ends: 68201 [2021-12-22 12:40:22,108 INFO L226 Difference]: Without dead ends: 49870 [2021-12-22 12:40:22,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:40:22,159 INFO L933 BasicCegarLoop]: 4704 mSDtfsCounter, 5172 mSDsluCounter, 17374 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5188 SdHoareTripleChecker+Valid, 22078 SdHoareTripleChecker+Invalid, 2398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-22 12:40:22,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5188 Valid, 22078 Invalid, 2398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-22 12:40:22,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49870 states. [2021-12-22 12:40:24,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49870 to 38646. [2021-12-22 12:40:24,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38646 states, 35415 states have (on average 1.564845404489623) internal successors, (55419), 35545 states have internal predecessors, (55419), 2327 states have call successors, (2327), 774 states have call predecessors, (2327), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2021-12-22 12:40:24,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38646 states to 38646 states and 62388 transitions. [2021-12-22 12:40:24,342 INFO L78 Accepts]: Start accepts. Automaton has 38646 states and 62388 transitions. Word has length 145 [2021-12-22 12:40:24,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:40:24,343 INFO L470 AbstractCegarLoop]: Abstraction has 38646 states and 62388 transitions. [2021-12-22 12:40:24,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:40:24,343 INFO L276 IsEmpty]: Start isEmpty. Operand 38646 states and 62388 transitions. [2021-12-22 12:40:24,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-22 12:40:24,364 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:40:24,364 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] [2021-12-22 12:40:24,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 12:40:24,365 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:40:24,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:40:24,365 INFO L85 PathProgramCache]: Analyzing trace with hash 5273951, now seen corresponding path program 1 times [2021-12-22 12:40:24,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:40:24,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026245447] [2021-12-22 12:40:24,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:40:24,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:40:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:24,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:40:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:24,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 12:40:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:24,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 12:40:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:24,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 12:40:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:24,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-22 12:40:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:24,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:40:24,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:40:24,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026245447] [2021-12-22 12:40:24,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026245447] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:40:24,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:40:24,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:40:24,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561533946] [2021-12-22 12:40:24,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:40:24,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:40:24,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:40:24,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:40:24,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:40:24,499 INFO L87 Difference]: Start difference. First operand 38646 states and 62388 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:40:35,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:40:35,592 INFO L93 Difference]: Finished difference Result 149094 states and 240779 transitions. [2021-12-22 12:40:35,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:40:35,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-12-22 12:40:35,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:40:35,959 INFO L225 Difference]: With dead ends: 149094 [2021-12-22 12:40:35,959 INFO L226 Difference]: Without dead ends: 112586 [2021-12-22 12:40:36,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 12:40:36,075 INFO L933 BasicCegarLoop]: 4832 mSDtfsCounter, 5249 mSDsluCounter, 17363 mSDsCounter, 0 mSdLazyCounter, 2707 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5264 SdHoareTripleChecker+Valid, 22195 SdHoareTripleChecker+Invalid, 2788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:40:36,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5264 Valid, 22195 Invalid, 2788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2707 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-22 12:40:36,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112586 states. [2021-12-22 12:40:40,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112586 to 74232. [2021-12-22 12:40:40,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74232 states, 67929 states have (on average 1.5573760838522575) internal successors, (105791), 68187 states have internal predecessors, (105791), 4503 states have call successors, (4503), 1542 states have call predecessors, (4503), 1798 states have return successors, (11320), 4758 states have call predecessors, (11320), 4503 states have call successors, (11320) [2021-12-22 12:40:41,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74232 states to 74232 states and 121614 transitions. [2021-12-22 12:40:41,317 INFO L78 Accepts]: Start accepts. Automaton has 74232 states and 121614 transitions. Word has length 145 [2021-12-22 12:40:41,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:40:41,318 INFO L470 AbstractCegarLoop]: Abstraction has 74232 states and 121614 transitions. [2021-12-22 12:40:41,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:40:41,318 INFO L276 IsEmpty]: Start isEmpty. Operand 74232 states and 121614 transitions. [2021-12-22 12:40:41,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-22 12:40:41,348 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:40:41,349 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] [2021-12-22 12:40:41,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 12:40:41,349 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:40:41,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:40:41,349 INFO L85 PathProgramCache]: Analyzing trace with hash 2007160221, now seen corresponding path program 1 times [2021-12-22 12:40:41,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:40:41,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126315613] [2021-12-22 12:40:41,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:40:41,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:40:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:41,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:40:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:41,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 12:40:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:41,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-22 12:40:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:41,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 12:40:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:41,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-22 12:40:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:41,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:40:41,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:40:41,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126315613] [2021-12-22 12:40:41,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126315613] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:40:41,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:40:41,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:40:41,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638343783] [2021-12-22 12:40:41,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:40:41,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:40:41,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:40:41,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:40:41,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:40:41,447 INFO L87 Difference]: Start difference. First operand 74232 states and 121614 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)