./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.08.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_label43+token_ring.08.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 343a266e04a35949615e598ecd53205cd1ef95f44fcd29af6bf4976fff243198 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 01:54:15,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 01:54:15,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 01:54:15,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 01:54:15,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 01:54:15,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 01:54:15,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 01:54:15,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 01:54:15,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 01:54:15,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 01:54:15,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 01:54:15,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 01:54:15,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 01:54:15,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 01:54:15,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 01:54:15,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 01:54:15,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 01:54:15,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 01:54:15,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 01:54:15,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 01:54:15,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 01:54:15,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 01:54:15,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 01:54:15,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 01:54:15,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 01:54:15,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 01:54:15,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 01:54:15,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 01:54:15,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 01:54:15,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 01:54:15,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 01:54:15,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 01:54:15,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 01:54:15,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 01:54:15,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 01:54:15,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 01:54:15,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 01:54:15,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 01:54:15,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 01:54:15,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 01:54:15,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 01:54:15,614 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 01:54:15,636 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 01:54:15,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 01:54:15,638 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 01:54:15,638 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 01:54:15,639 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 01:54:15,639 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 01:54:15,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 01:54:15,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 01:54:15,640 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 01:54:15,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 01:54:15,641 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 01:54:15,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 01:54:15,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 01:54:15,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 01:54:15,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 01:54:15,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 01:54:15,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 01:54:15,642 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 01:54:15,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 01:54:15,642 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 01:54:15,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 01:54:15,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 01:54:15,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 01:54:15,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 01:54:15,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:54:15,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 01:54:15,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 01:54:15,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 01:54:15,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 01:54:15,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 01:54:15,644 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 01:54:15,644 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 01:54:15,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 01:54:15,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 343a266e04a35949615e598ecd53205cd1ef95f44fcd29af6bf4976fff243198 [2021-12-28 01:54:15,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 01:54:15,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 01:54:15,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 01:54:15,907 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 01:54:15,908 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 01:54:15,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.08.cil-2.c [2021-12-28 01:54:15,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55b463b2f/2e6834b0cd7d4a8481037e9911b1fbe1/FLAGef1c2a609 [2021-12-28 01:54:16,681 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 01:54:16,682 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.08.cil-2.c [2021-12-28 01:54:16,716 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55b463b2f/2e6834b0cd7d4a8481037e9911b1fbe1/FLAGef1c2a609 [2021-12-28 01:54:16,979 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55b463b2f/2e6834b0cd7d4a8481037e9911b1fbe1 [2021-12-28 01:54:16,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 01:54:16,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 01:54:16,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 01:54:16,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 01:54:16,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 01:54:16,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:54:16" (1/1) ... [2021-12-28 01:54:16,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33108cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:16, skipping insertion in model container [2021-12-28 01:54:16,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:54:16" (1/1) ... [2021-12-28 01:54:16,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 01:54:17,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 01:54:18,375 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_label43+token_ring.08.cil-2.c[381679,381692] [2021-12-28 01:54:18,415 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_label43+token_ring.08.cil-2.c[383339,383352] [2021-12-28 01:54:18,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:54:18,626 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 01:54:19,281 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_label43+token_ring.08.cil-2.c[381679,381692] [2021-12-28 01:54:19,284 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_label43+token_ring.08.cil-2.c[383339,383352] [2021-12-28 01:54:19,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:54:19,371 INFO L208 MainTranslator]: Completed translation [2021-12-28 01:54:19,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:19 WrapperNode [2021-12-28 01:54:19,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 01:54:19,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 01:54:19,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 01:54:19,373 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 01:54:19,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:19" (1/1) ... [2021-12-28 01:54:19,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:19" (1/1) ... [2021-12-28 01:54:19,696 INFO L137 Inliner]: procedures = 60, calls = 66, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 12972 [2021-12-28 01:54:19,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 01:54:19,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 01:54:19,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 01:54:19,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 01:54:19,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:19" (1/1) ... [2021-12-28 01:54:19,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:19" (1/1) ... [2021-12-28 01:54:19,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:19" (1/1) ... [2021-12-28 01:54:19,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:19" (1/1) ... [2021-12-28 01:54:20,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:19" (1/1) ... [2021-12-28 01:54:20,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:19" (1/1) ... [2021-12-28 01:54:20,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:19" (1/1) ... [2021-12-28 01:54:20,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 01:54:20,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 01:54:20,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 01:54:20,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 01:54:20,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:19" (1/1) ... [2021-12-28 01:54:20,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:54:20,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:54:20,186 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) [2021-12-28 01:54:20,235 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 [2021-12-28 01:54:20,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 01:54:20,263 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-28 01:54:20,264 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-28 01:54:20,264 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-28 01:54:20,264 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-28 01:54:20,264 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-28 01:54:20,264 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-28 01:54:20,264 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-28 01:54:20,264 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-28 01:54:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-28 01:54:20,265 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-28 01:54:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-28 01:54:20,265 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-28 01:54:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-28 01:54:20,265 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-28 01:54:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 01:54:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 01:54:20,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 01:54:20,415 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 01:54:20,416 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 01:54:25,156 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 01:54:25,179 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 01:54:25,179 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-12-28 01:54:25,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:54:25 BoogieIcfgContainer [2021-12-28 01:54:25,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 01:54:25,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 01:54:25,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 01:54:25,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 01:54:25,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 01:54:16" (1/3) ... [2021-12-28 01:54:25,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e41cbb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:54:25, skipping insertion in model container [2021-12-28 01:54:25,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:54:19" (2/3) ... [2021-12-28 01:54:25,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e41cbb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:54:25, skipping insertion in model container [2021-12-28 01:54:25,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:54:25" (3/3) ... [2021-12-28 01:54:25,193 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.08.cil-2.c [2021-12-28 01:54:25,196 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 01:54:25,197 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 01:54:25,245 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 01:54:25,250 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 [2021-12-28 01:54:25,250 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 01:54:25,285 INFO L276 IsEmpty]: Start isEmpty. Operand has 2473 states, 2439 states have (on average 1.848708487084871) internal successors, (4509), 2444 states have internal predecessors, (4509), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-28 01:54:25,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 01:54:25,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:54:25,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:54:25,297 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:54:25,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:54:25,301 INFO L85 PathProgramCache]: Analyzing trace with hash -970277371, now seen corresponding path program 1 times [2021-12-28 01:54:25,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:54:25,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054419203] [2021-12-28 01:54:25,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:54:25,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:54:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:25,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:54:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:25,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:54:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:25,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:54:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:25,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:54:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:25,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:54:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:25,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:54:25,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:54:25,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054419203] [2021-12-28 01:54:25,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054419203] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:54:25,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:54:25,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 01:54:25,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413997106] [2021-12-28 01:54:25,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:54:25,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:54:25,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:54:25,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:54:25,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:54:25,688 INFO L87 Difference]: Start difference. First operand has 2473 states, 2439 states have (on average 1.848708487084871) internal successors, (4509), 2444 states have internal predecessors, (4509), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:26,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:54:26,656 INFO L93 Difference]: Finished difference Result 5037 states and 9272 transitions. [2021-12-28 01:54:26,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 01:54:26,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-28 01:54:26,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:54:26,675 INFO L225 Difference]: With dead ends: 5037 [2021-12-28 01:54:26,675 INFO L226 Difference]: Without dead ends: 2503 [2021-12-28 01:54:26,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-28 01:54:26,683 INFO L933 BasicCegarLoop]: 4511 mSDtfsCounter, 748 mSDsluCounter, 12379 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 16890 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 01:54:26,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 16890 Invalid, 567 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 01:54:26,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2021-12-28 01:54:26,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 2405. [2021-12-28 01:54:26,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2373 states have (on average 1.8348082595870205) internal successors, (4354), 2376 states have internal predecessors, (4354), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-28 01:54:26,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 4400 transitions. [2021-12-28 01:54:26,783 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 4400 transitions. Word has length 135 [2021-12-28 01:54:26,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:54:26,784 INFO L470 AbstractCegarLoop]: Abstraction has 2405 states and 4400 transitions. [2021-12-28 01:54:26,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:26,784 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 4400 transitions. [2021-12-28 01:54:26,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 01:54:26,787 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:54:26,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:54:26,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 01:54:26,787 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:54:26,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:54:26,788 INFO L85 PathProgramCache]: Analyzing trace with hash -540619065, now seen corresponding path program 1 times [2021-12-28 01:54:26,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:54:26,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299302054] [2021-12-28 01:54:26,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:54:26,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:54:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:26,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:54:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:26,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:54:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:26,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:54:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:26,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:54:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:26,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:54:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:26,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:54:26,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:54:26,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299302054] [2021-12-28 01:54:26,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299302054] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:54:26,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:54:26,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 01:54:26,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438968668] [2021-12-28 01:54:26,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:54:26,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 01:54:26,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:54:26,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 01:54:26,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 01:54:26,924 INFO L87 Difference]: Start difference. First operand 2405 states and 4400 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:28,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:54:28,439 INFO L93 Difference]: Finished difference Result 3147 states and 5591 transitions. [2021-12-28 01:54:28,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 01:54:28,440 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-28 01:54:28,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:54:28,450 INFO L225 Difference]: With dead ends: 3147 [2021-12-28 01:54:28,451 INFO L226 Difference]: Without dead ends: 2879 [2021-12-28 01:54:28,453 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 [2021-12-28 01:54:28,454 INFO L933 BasicCegarLoop]: 4478 mSDtfsCounter, 5066 mSDsluCounter, 12604 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5081 SdHoareTripleChecker+Valid, 17082 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-28 01:54:28,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5081 Valid, 17082 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1435 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-28 01:54:28,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2021-12-28 01:54:28,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 2682. [2021-12-28 01:54:28,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2626 states have (on average 1.8111195734958112) internal successors, (4756), 2630 states have internal predecessors, (4756), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2021-12-28 01:54:28,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 4839 transitions. [2021-12-28 01:54:28,519 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 4839 transitions. Word has length 135 [2021-12-28 01:54:28,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:54:28,519 INFO L470 AbstractCegarLoop]: Abstraction has 2682 states and 4839 transitions. [2021-12-28 01:54:28,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:28,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 4839 transitions. [2021-12-28 01:54:28,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 01:54:28,521 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:54:28,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:54:28,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 01:54:28,522 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:54:28,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:54:28,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1902621501, now seen corresponding path program 1 times [2021-12-28 01:54:28,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:54:28,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825750340] [2021-12-28 01:54:28,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:54:28,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:54:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:28,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:54:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:28,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:54:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:28,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:54:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:28,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:54:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:28,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:54:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:28,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:54:28,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:54:28,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825750340] [2021-12-28 01:54:28,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825750340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:54:28,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:54:28,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:54:28,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890164962] [2021-12-28 01:54:28,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:54:28,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:54:28,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:54:28,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:54:28,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:54:28,675 INFO L87 Difference]: Start difference. First operand 2682 states and 4839 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:30,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:54:30,633 INFO L93 Difference]: Finished difference Result 3810 states and 6649 transitions. [2021-12-28 01:54:30,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:54:30,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-28 01:54:30,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:54:30,647 INFO L225 Difference]: With dead ends: 3810 [2021-12-28 01:54:30,648 INFO L226 Difference]: Without dead ends: 3265 [2021-12-28 01:54:30,655 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 [2021-12-28 01:54:30,657 INFO L933 BasicCegarLoop]: 4701 mSDtfsCounter, 5078 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5093 SdHoareTripleChecker+Valid, 21976 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-28 01:54:30,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5093 Valid, 21976 Invalid, 2304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-28 01:54:30,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2021-12-28 01:54:30,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 2940. [2021-12-28 01:54:30,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2940 states, 2860 states have (on average 1.7902097902097902) internal successors, (5120), 2865 states have internal predecessors, (5120), 58 states have call successors, (58), 19 states have call predecessors, (58), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2021-12-28 01:54:30,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 5239 transitions. [2021-12-28 01:54:30,738 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 5239 transitions. Word has length 135 [2021-12-28 01:54:30,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:54:30,739 INFO L470 AbstractCegarLoop]: Abstraction has 2940 states and 5239 transitions. [2021-12-28 01:54:30,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:30,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 5239 transitions. [2021-12-28 01:54:30,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 01:54:30,742 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:54:30,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:54:30,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 01:54:30,743 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:54:30,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:54:30,743 INFO L85 PathProgramCache]: Analyzing trace with hash 26310725, now seen corresponding path program 1 times [2021-12-28 01:54:30,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:54:30,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42243269] [2021-12-28 01:54:30,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:54:30,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:54:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:30,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:54:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:30,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:54:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:30,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:54:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:30,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:54:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:30,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:54:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:54:30,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:54:30,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42243269] [2021-12-28 01:54:30,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42243269] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:54:30,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:54:30,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:54:30,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393705432] [2021-12-28 01:54:30,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:54:30,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:54:30,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:54:30,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:54:30,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:54:30,867 INFO L87 Difference]: Start difference. First operand 2940 states and 5239 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:32,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:54:32,721 INFO L93 Difference]: Finished difference Result 4787 states and 8197 transitions. [2021-12-28 01:54:32,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:54:32,721 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-28 01:54:32,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:54:32,736 INFO L225 Difference]: With dead ends: 4787 [2021-12-28 01:54:32,736 INFO L226 Difference]: Without dead ends: 3984 [2021-12-28 01:54:32,740 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 [2021-12-28 01:54:32,748 INFO L933 BasicCegarLoop]: 4506 mSDtfsCounter, 5157 mSDsluCounter, 16785 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 21291 SdHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:54:32,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5172 Valid, 21291 Invalid, 2089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1982 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 01:54:32,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2021-12-28 01:54:32,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 3457. [2021-12-28 01:54:32,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3457 states, 3329 states have (on average 1.756984079303094) internal successors, (5849), 3336 states have internal predecessors, (5849), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2021-12-28 01:54:32,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3457 states to 3457 states and 6044 transitions. [2021-12-28 01:54:32,858 INFO L78 Accepts]: Start accepts. Automaton has 3457 states and 6044 transitions. Word has length 135 [2021-12-28 01:54:32,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:54:32,862 INFO L470 AbstractCegarLoop]: Abstraction has 3457 states and 6044 transitions. [2021-12-28 01:54:32,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:32,862 INFO L276 IsEmpty]: Start isEmpty. Operand 3457 states and 6044 transitions. [2021-12-28 01:54:32,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 01:54:32,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:54:32,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:54:32,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 01:54:32,865 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:54:32,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:54:32,865 INFO L85 PathProgramCache]: Analyzing trace with hash 2028196995, now seen corresponding path program 1 times [2021-12-28 01:54:32,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:54:32,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044820497] [2021-12-28 01:54:32,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:54:32,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:54:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:32,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:54:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:32,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:54:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:32,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:54:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:32,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:54:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:32,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:54:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:32,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:54:32,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:54:32,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044820497] [2021-12-28 01:54:32,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044820497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:54:32,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:54:32,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:54:32,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991561018] [2021-12-28 01:54:32,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:54:32,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:54:32,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:54:32,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:54:32,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:54:32,980 INFO L87 Difference]: Start difference. First operand 3457 states and 6044 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:34,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:54:34,878 INFO L93 Difference]: Finished difference Result 6668 states and 11162 transitions. [2021-12-28 01:54:34,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:54:34,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-28 01:54:34,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:54:34,919 INFO L225 Difference]: With dead ends: 6668 [2021-12-28 01:54:34,919 INFO L226 Difference]: Without dead ends: 5348 [2021-12-28 01:54:34,925 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 [2021-12-28 01:54:34,925 INFO L933 BasicCegarLoop]: 4689 mSDtfsCounter, 5073 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5088 SdHoareTripleChecker+Valid, 21964 SdHoareTripleChecker+Invalid, 2308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-28 01:54:34,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5088 Valid, 21964 Invalid, 2308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2231 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-28 01:54:34,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5348 states. [2021-12-28 01:54:35,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5348 to 4492. [2021-12-28 01:54:35,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4492 states, 4268 states have (on average 1.7120431115276475) internal successors, (7307), 4279 states have internal predecessors, (7307), 160 states have call successors, (160), 55 states have call predecessors, (160), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2021-12-28 01:54:35,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4492 states to 4492 states and 7660 transitions. [2021-12-28 01:54:35,077 INFO L78 Accepts]: Start accepts. Automaton has 4492 states and 7660 transitions. Word has length 135 [2021-12-28 01:54:35,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:54:35,078 INFO L470 AbstractCegarLoop]: Abstraction has 4492 states and 7660 transitions. [2021-12-28 01:54:35,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:35,079 INFO L276 IsEmpty]: Start isEmpty. Operand 4492 states and 7660 transitions. [2021-12-28 01:54:35,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 01:54:35,081 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:54:35,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:54:35,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 01:54:35,081 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:54:35,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:54:35,082 INFO L85 PathProgramCache]: Analyzing trace with hash -539625339, now seen corresponding path program 1 times [2021-12-28 01:54:35,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:54:35,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684962589] [2021-12-28 01:54:35,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:54:35,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:54:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:35,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:54:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:35,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:54:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:35,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:54:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:35,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:54:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:35,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:54:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:35,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:54:35,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:54:35,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684962589] [2021-12-28 01:54:35,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684962589] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:54:35,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:54:35,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:54:35,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105584037] [2021-12-28 01:54:35,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:54:35,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:54:35,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:54:35,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:54:35,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:54:35,207 INFO L87 Difference]: Start difference. First operand 4492 states and 7660 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:37,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:54:37,389 INFO L93 Difference]: Finished difference Result 10422 states and 17096 transitions. [2021-12-28 01:54:37,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:54:37,389 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-28 01:54:37,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:54:37,432 INFO L225 Difference]: With dead ends: 10422 [2021-12-28 01:54:37,432 INFO L226 Difference]: Without dead ends: 8067 [2021-12-28 01:54:37,442 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 [2021-12-28 01:54:37,443 INFO L933 BasicCegarLoop]: 4681 mSDtfsCounter, 5068 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2211 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5083 SdHoareTripleChecker+Valid, 21956 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-28 01:54:37,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5083 Valid, 21956 Invalid, 2289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2211 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-28 01:54:37,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8067 states. [2021-12-28 01:54:37,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8067 to 6576. [2021-12-28 01:54:37,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6576 states, 6160 states have (on average 1.663474025974026) internal successors, (10247), 6179 states have internal predecessors, (10247), 296 states have call successors, (296), 103 states have call predecessors, (296), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2021-12-28 01:54:37,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6576 states to 6576 states and 10934 transitions. [2021-12-28 01:54:37,724 INFO L78 Accepts]: Start accepts. Automaton has 6576 states and 10934 transitions. Word has length 135 [2021-12-28 01:54:37,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:54:37,725 INFO L470 AbstractCegarLoop]: Abstraction has 6576 states and 10934 transitions. [2021-12-28 01:54:37,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:37,725 INFO L276 IsEmpty]: Start isEmpty. Operand 6576 states and 10934 transitions. [2021-12-28 01:54:37,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 01:54:37,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:54:37,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:54:37,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 01:54:37,729 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:54:37,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:54:37,730 INFO L85 PathProgramCache]: Analyzing trace with hash 2107979015, now seen corresponding path program 1 times [2021-12-28 01:54:37,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:54:37,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479525157] [2021-12-28 01:54:37,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:54:37,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:54:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:37,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:54:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:37,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:54:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:37,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:54:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:37,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:54:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:37,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:54:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:37,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:54:37,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:54:37,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479525157] [2021-12-28 01:54:37,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479525157] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:54:37,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:54:37,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:54:37,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587257616] [2021-12-28 01:54:37,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:54:37,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:54:37,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:54:37,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:54:37,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:54:37,836 INFO L87 Difference]: Start difference. First operand 6576 states and 10934 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:40,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:54:40,025 INFO L93 Difference]: Finished difference Result 17948 states and 29056 transitions. [2021-12-28 01:54:40,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:54:40,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-28 01:54:40,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:54:40,064 INFO L225 Difference]: With dead ends: 17948 [2021-12-28 01:54:40,065 INFO L226 Difference]: Without dead ends: 13509 [2021-12-28 01:54:40,080 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 [2021-12-28 01:54:40,081 INFO L933 BasicCegarLoop]: 4676 mSDtfsCounter, 5067 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5082 SdHoareTripleChecker+Valid, 21951 SdHoareTripleChecker+Invalid, 2281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:54:40,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5082 Valid, 21951 Invalid, 2281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2203 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 01:54:40,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13509 states. [2021-12-28 01:54:40,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13509 to 10757. [2021-12-28 01:54:40,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10757 states, 9957 states have (on average 1.6214723310234007) internal successors, (16145), 9992 states have internal predecessors, (16145), 568 states have call successors, (568), 199 states have call predecessors, (568), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2021-12-28 01:54:40,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10757 states to 10757 states and 17554 transitions. [2021-12-28 01:54:40,502 INFO L78 Accepts]: Start accepts. Automaton has 10757 states and 17554 transitions. Word has length 135 [2021-12-28 01:54:40,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:54:40,502 INFO L470 AbstractCegarLoop]: Abstraction has 10757 states and 17554 transitions. [2021-12-28 01:54:40,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:40,503 INFO L276 IsEmpty]: Start isEmpty. Operand 10757 states and 17554 transitions. [2021-12-28 01:54:40,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 01:54:40,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:54:40,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:54:40,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 01:54:40,508 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:54:40,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:54:40,508 INFO L85 PathProgramCache]: Analyzing trace with hash -23371707, now seen corresponding path program 1 times [2021-12-28 01:54:40,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:54:40,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941887563] [2021-12-28 01:54:40,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:54:40,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:54:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:40,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:54:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:40,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:54:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:40,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:54:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:40,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:54:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:40,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:54:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:40,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:54:40,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:54:40,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941887563] [2021-12-28 01:54:40,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941887563] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:54:40,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:54:40,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:54:40,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485477909] [2021-12-28 01:54:40,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:54:40,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:54:40,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:54:40,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:54:40,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:54:40,592 INFO L87 Difference]: Start difference. First operand 10757 states and 17554 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:41,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:54:41,988 INFO L93 Difference]: Finished difference Result 22268 states and 36159 transitions. [2021-12-28 01:54:41,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 01:54:41,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-28 01:54:41,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:54:42,026 INFO L225 Difference]: With dead ends: 22268 [2021-12-28 01:54:42,026 INFO L226 Difference]: Without dead ends: 13648 [2021-12-28 01:54:42,049 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 [2021-12-28 01:54:42,049 INFO L933 BasicCegarLoop]: 4410 mSDtfsCounter, 4885 mSDsluCounter, 12434 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4901 SdHoareTripleChecker+Valid, 16844 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 01:54:42,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4901 Valid, 16844 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 01:54:42,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13648 states. [2021-12-28 01:54:42,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13648 to 10757. [2021-12-28 01:54:42,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10757 states, 9957 states have (on average 1.6181580797428945) internal successors, (16112), 9992 states have internal predecessors, (16112), 568 states have call successors, (568), 199 states have call predecessors, (568), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2021-12-28 01:54:42,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10757 states to 10757 states and 17521 transitions. [2021-12-28 01:54:42,472 INFO L78 Accepts]: Start accepts. Automaton has 10757 states and 17521 transitions. Word has length 135 [2021-12-28 01:54:42,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:54:42,472 INFO L470 AbstractCegarLoop]: Abstraction has 10757 states and 17521 transitions. [2021-12-28 01:54:42,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:42,472 INFO L276 IsEmpty]: Start isEmpty. Operand 10757 states and 17521 transitions. [2021-12-28 01:54:42,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 01:54:42,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:54:42,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:54:42,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 01:54:42,480 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:54:42,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:54:42,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1061956281, now seen corresponding path program 1 times [2021-12-28 01:54:42,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:54:42,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085735304] [2021-12-28 01:54:42,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:54:42,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:54:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:42,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:54:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:42,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:54:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:42,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:54:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:42,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:54:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:42,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:54:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:42,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:54:42,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:54:42,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085735304] [2021-12-28 01:54:42,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085735304] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:54:42,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:54:42,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:54:42,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569100615] [2021-12-28 01:54:42,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:54:42,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:54:42,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:54:42,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:54:42,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:54:42,589 INFO L87 Difference]: Start difference. First operand 10757 states and 17521 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:45,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:54:45,428 INFO L93 Difference]: Finished difference Result 32965 states and 52934 transitions. [2021-12-28 01:54:45,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:54:45,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-28 01:54:45,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:54:45,491 INFO L225 Difference]: With dead ends: 32965 [2021-12-28 01:54:45,491 INFO L226 Difference]: Without dead ends: 24345 [2021-12-28 01:54:45,519 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 [2021-12-28 01:54:45,521 INFO L933 BasicCegarLoop]: 4665 mSDtfsCounter, 5059 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2176 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5074 SdHoareTripleChecker+Valid, 21940 SdHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:54:45,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5074 Valid, 21940 Invalid, 2254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2176 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 01:54:45,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24345 states. [2021-12-28 01:54:46,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24345 to 19183. [2021-12-28 01:54:46,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19183 states, 17615 states have (on average 1.587056485949475) internal successors, (27956), 17682 states have internal predecessors, (27956), 1112 states have call successors, (1112), 391 states have call predecessors, (1112), 454 states have return successors, (1903), 1173 states have call predecessors, (1903), 1110 states have call successors, (1903) [2021-12-28 01:54:46,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19183 states to 19183 states and 30971 transitions. [2021-12-28 01:54:46,580 INFO L78 Accepts]: Start accepts. Automaton has 19183 states and 30971 transitions. Word has length 135 [2021-12-28 01:54:46,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:54:46,580 INFO L470 AbstractCegarLoop]: Abstraction has 19183 states and 30971 transitions. [2021-12-28 01:54:46,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:46,581 INFO L276 IsEmpty]: Start isEmpty. Operand 19183 states and 30971 transitions. [2021-12-28 01:54:46,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 01:54:46,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:54:46,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:54:46,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 01:54:46,590 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:54:46,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:54:46,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1259845637, now seen corresponding path program 1 times [2021-12-28 01:54:46,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:54:46,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885743312] [2021-12-28 01:54:46,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:54:46,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:54:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:46,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:54:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:46,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:54:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:46,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:54:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:46,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:54:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:46,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:54:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:46,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:54:46,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:54:46,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885743312] [2021-12-28 01:54:46,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885743312] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:54:46,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:54:46,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:54:46,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220503873] [2021-12-28 01:54:46,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:54:46,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:54:46,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:54:46,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:54:46,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:54:46,690 INFO L87 Difference]: Start difference. First operand 19183 states and 30971 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:51,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:54:51,761 INFO L93 Difference]: Finished difference Result 70813 states and 113344 transitions. [2021-12-28 01:54:51,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:54:51,764 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-28 01:54:51,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:54:51,911 INFO L225 Difference]: With dead ends: 70813 [2021-12-28 01:54:51,911 INFO L226 Difference]: Without dead ends: 53767 [2021-12-28 01:54:51,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 01:54:51,949 INFO L933 BasicCegarLoop]: 4658 mSDtfsCounter, 5388 mSDsluCounter, 17267 mSDsCounter, 0 mSdLazyCounter, 2161 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5412 SdHoareTripleChecker+Valid, 21925 SdHoareTripleChecker+Invalid, 2244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-28 01:54:51,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5412 Valid, 21925 Invalid, 2244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2161 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-28 01:54:51,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53767 states. [2021-12-28 01:54:53,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53767 to 35904. [2021-12-28 01:54:54,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35904 states, 32864 states have (on average 1.5702896786757545) internal successors, (51606), 32995 states have internal predecessors, (51606), 2136 states have call successors, (2136), 775 states have call predecessors, (2136), 902 states have return successors, (4449), 2261 states have call predecessors, (4449), 2134 states have call successors, (4449) [2021-12-28 01:54:54,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35904 states to 35904 states and 58191 transitions. [2021-12-28 01:54:54,092 INFO L78 Accepts]: Start accepts. Automaton has 35904 states and 58191 transitions. Word has length 135 [2021-12-28 01:54:54,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:54:54,092 INFO L470 AbstractCegarLoop]: Abstraction has 35904 states and 58191 transitions. [2021-12-28 01:54:54,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:54:54,093 INFO L276 IsEmpty]: Start isEmpty. Operand 35904 states and 58191 transitions. [2021-12-28 01:54:54,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 01:54:54,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:54:54,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:54:54,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 01:54:54,111 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:54:54,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:54:54,111 INFO L85 PathProgramCache]: Analyzing trace with hash -882014841, now seen corresponding path program 1 times [2021-12-28 01:54:54,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:54:54,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720644433] [2021-12-28 01:54:54,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:54:54,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:54:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:54,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:54:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:54,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:54:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:54,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:54:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:54,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:54:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:54,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:54:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:54:54,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:54:54,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:54:54,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720644433] [2021-12-28 01:54:54,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720644433] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:54:54,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:54:54,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:54:54,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17366657] [2021-12-28 01:54:54,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:54:54,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:54:54,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:54:54,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:54:54,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:54:54,223 INFO L87 Difference]: Start difference. First operand 35904 states and 58191 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:55:03,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:55:03,641 INFO L93 Difference]: Finished difference Result 136652 states and 221030 transitions. [2021-12-28 01:55:03,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:55:03,641 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-28 01:55:03,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:55:04,029 INFO L225 Difference]: With dead ends: 136652 [2021-12-28 01:55:04,029 INFO L226 Difference]: Without dead ends: 102885 [2021-12-28 01:55:04,116 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 [2021-12-28 01:55:04,117 INFO L933 BasicCegarLoop]: 4615 mSDtfsCounter, 5197 mSDsluCounter, 16805 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5211 SdHoareTripleChecker+Valid, 21420 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-28 01:55:04,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5211 Valid, 21420 Invalid, 2418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-28 01:55:04,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102885 states. [2021-12-28 01:55:08,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102885 to 68001. [2021-12-28 01:55:08,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68001 states, 62081 states have (on average 1.5570625473172146) internal successors, (96664), 62340 states have internal predecessors, (96664), 4120 states have call successors, (4120), 1543 states have call predecessors, (4120), 1798 states have return successors, (10935), 4373 states have call predecessors, (10935), 4118 states have call successors, (10935) [2021-12-28 01:55:08,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68001 states to 68001 states and 111719 transitions. [2021-12-28 01:55:08,637 INFO L78 Accepts]: Start accepts. Automaton has 68001 states and 111719 transitions. Word has length 135 [2021-12-28 01:55:08,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:55:08,637 INFO L470 AbstractCegarLoop]: Abstraction has 68001 states and 111719 transitions. [2021-12-28 01:55:08,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:55:08,638 INFO L276 IsEmpty]: Start isEmpty. Operand 68001 states and 111719 transitions. [2021-12-28 01:55:08,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-28 01:55:08,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:55:08,669 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] [2021-12-28 01:55:08,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 01:55:08,670 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:55:08,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:55:08,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1505296443, now seen corresponding path program 1 times [2021-12-28 01:55:08,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:55:08,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358810450] [2021-12-28 01:55:08,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:55:08,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:55:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:55:08,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:55:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:55:08,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 01:55:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:55:08,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 01:55:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:55:08,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 01:55:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:55:08,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 01:55:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:55:08,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:55:08,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:55:08,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358810450] [2021-12-28 01:55:08,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358810450] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:55:08,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:55:08,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:55:08,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732604586] [2021-12-28 01:55:08,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:55:08,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:55:08,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:55:08,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:55:08,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:55:08,754 INFO L87 Difference]: Start difference. First operand 68001 states and 111719 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)