./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.12.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.12.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 12040a15adbfbac5c2e9f20bae26c10925cfaa6501d267b475499f3f937f66c2 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:48:51,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:48:51,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:48:51,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:48:51,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:48:51,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:48:51,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:48:51,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:48:51,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:48:51,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:48:51,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:48:51,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:48:51,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:48:51,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:48:51,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:48:51,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:48:51,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:48:51,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:48:51,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:48:51,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:48:51,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:48:51,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:48:51,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:48:51,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:48:51,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:48:51,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:48:51,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:48:51,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:48:51,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:48:51,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:48:51,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:48:51,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:48:51,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:48:51,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:48:51,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:48:51,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:48:51,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:48:51,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:48:51,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:48:51,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:48:51,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:48:51,407 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:48:51,442 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:48:51,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:48:51,443 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:48:51,443 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:48:51,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:48:51,444 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:48:51,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:48:51,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:48:51,445 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:48:51,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:48:51,446 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:48:51,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:48:51,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:48:51,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:48:51,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:48:51,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:48:51,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:48:51,447 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:48:51,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:48:51,447 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:48:51,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:48:51,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:48:51,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:48:51,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:48:51,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:48:51,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:48:51,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:48:51,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:48:51,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:48:51,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:48:51,450 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:48:51,451 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:48:51,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:48:51,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:48:51,451 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12040a15adbfbac5c2e9f20bae26c10925cfaa6501d267b475499f3f937f66c2 [2021-12-14 15:48:51,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:48:51,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:48:51,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:48:51,755 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:48:51,756 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:48:51,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label48+token_ring.12.cil-2.c [2021-12-14 15:48:51,808 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9284a93d/67487aecb8fa4277b80899b2035b8d7a/FLAGf135ac317 [2021-12-14 15:48:52,675 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:48:52,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.12.cil-2.c [2021-12-14 15:48:52,716 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9284a93d/67487aecb8fa4277b80899b2035b8d7a/FLAGf135ac317 [2021-12-14 15:48:52,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9284a93d/67487aecb8fa4277b80899b2035b8d7a [2021-12-14 15:48:52,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:48:52,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:48:52,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:48:52,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:48:52,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:48:52,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:48:52" (1/1) ... [2021-12-14 15:48:52,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13bd62ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:52, skipping insertion in model container [2021-12-14 15:48:52,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:48:52" (1/1) ... [2021-12-14 15:48:52,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:48:52,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:48:54,526 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_label48+token_ring.12.cil-2.c[375709,375722] [2021-12-14 15:48:54,555 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_label48+token_ring.12.cil-2.c[383339,383352] [2021-12-14 15:48:54,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:48:54,846 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:48:55,568 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_label48+token_ring.12.cil-2.c[375709,375722] [2021-12-14 15:48:55,579 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_label48+token_ring.12.cil-2.c[383339,383352] [2021-12-14 15:48:55,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:48:55,679 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:48:55,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:55 WrapperNode [2021-12-14 15:48:55,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:48:55,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:48:55,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:48:55,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:48:55,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:55" (1/1) ... [2021-12-14 15:48:55,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:55" (1/1) ... [2021-12-14 15:48:56,152 INFO L137 Inliner]: procedures = 68, calls = 77, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 13199 [2021-12-14 15:48:56,153 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:48:56,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:48:56,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:48:56,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:48:56,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:55" (1/1) ... [2021-12-14 15:48:56,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:55" (1/1) ... [2021-12-14 15:48:56,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:55" (1/1) ... [2021-12-14 15:48:56,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:55" (1/1) ... [2021-12-14 15:48:56,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:55" (1/1) ... [2021-12-14 15:48:56,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:55" (1/1) ... [2021-12-14 15:48:56,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:55" (1/1) ... [2021-12-14 15:48:56,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:48:56,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:48:56,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:48:56,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:48:56,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:55" (1/1) ... [2021-12-14 15:48:56,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:48:56,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:48:56,670 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 15:48:56,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 15:48:56,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:48:56,798 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-14 15:48:56,798 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-14 15:48:56,799 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-14 15:48:56,799 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-14 15:48:56,799 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-14 15:48:56,799 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-14 15:48:56,799 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-14 15:48:56,799 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-14 15:48:56,799 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-14 15:48:56,799 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-14 15:48:56,799 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-14 15:48:56,799 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-14 15:48:56,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:48:56,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:48:56,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:48:57,008 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:48:57,010 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:49:02,960 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:49:02,991 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:49:02,992 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-14 15:49:02,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:49:02 BoogieIcfgContainer [2021-12-14 15:49:02,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:49:02,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:49:02,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:49:03,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:49:03,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:48:52" (1/3) ... [2021-12-14 15:49:03,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e03b152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:49:03, skipping insertion in model container [2021-12-14 15:49:03,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:48:55" (2/3) ... [2021-12-14 15:49:03,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e03b152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:49:03, skipping insertion in model container [2021-12-14 15:49:03,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:49:02" (3/3) ... [2021-12-14 15:49:03,004 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.12.cil-2.c [2021-12-14 15:49:03,008 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:49:03,009 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:49:03,058 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:49:03,064 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 15:49:03,065 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:49:03,118 INFO L276 IsEmpty]: Start isEmpty. Operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-14 15:49:03,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:49:03,134 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:03,135 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:03,136 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:03,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:03,141 INFO L85 PathProgramCache]: Analyzing trace with hash 10619845, now seen corresponding path program 1 times [2021-12-14 15:49:03,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:03,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846955290] [2021-12-14 15:49:03,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:03,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:03,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:03,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:49:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:03,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:49:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:03,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:49:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:03,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:49:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:03,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:03,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:03,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846955290] [2021-12-14 15:49:03,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846955290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:03,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:03,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:49:03,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435698344] [2021-12-14 15:49:03,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:03,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:49:03,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:03,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:49:03,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:49:03,770 INFO L87 Difference]: Start difference. First operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:05,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:49:05,670 INFO L93 Difference]: Finished difference Result 5266 states and 9664 transitions. [2021-12-14 15:49:05,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:49:05,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-14 15:49:05,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:49:05,696 INFO L225 Difference]: With dead ends: 5266 [2021-12-14 15:49:05,696 INFO L226 Difference]: Without dead ends: 2640 [2021-12-14 15:49:05,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:49:05,708 INFO L933 BasicCegarLoop]: 4683 mSDtfsCounter, 1034 mSDsluCounter, 12485 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 17168 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:49:05,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1058 Valid, 17168 Invalid, 763 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 15:49:05,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-12-14 15:49:05,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2498. [2021-12-14 15:49:05,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2464 states have (on average 1.8262987012987013) internal successors, (4500), 2466 states have internal predecessors, (4500), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-14 15:49:05,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4552 transitions. [2021-12-14 15:49:05,869 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4552 transitions. Word has length 178 [2021-12-14 15:49:05,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:49:05,869 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 4552 transitions. [2021-12-14 15:49:05,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:05,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4552 transitions. [2021-12-14 15:49:05,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:49:05,881 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:05,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:05,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:49:05,882 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:05,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:05,884 INFO L85 PathProgramCache]: Analyzing trace with hash -79440445, now seen corresponding path program 1 times [2021-12-14 15:49:05,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:05,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315569359] [2021-12-14 15:49:05,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:05,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:05,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:06,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:49:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:06,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:49:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:06,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:49:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:06,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:49:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:06,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:06,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:06,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315569359] [2021-12-14 15:49:06,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315569359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:06,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:06,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:49:06,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707601616] [2021-12-14 15:49:06,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:06,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:49:06,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:06,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:49:06,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:49:06,159 INFO L87 Difference]: Start difference. First operand 2498 states and 4552 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:07,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:49:07,641 INFO L93 Difference]: Finished difference Result 3002 states and 5366 transitions. [2021-12-14 15:49:07,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:49:07,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-14 15:49:07,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:49:07,654 INFO L225 Difference]: With dead ends: 3002 [2021-12-14 15:49:07,654 INFO L226 Difference]: Without dead ends: 2640 [2021-12-14 15:49:07,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:49:07,658 INFO L933 BasicCegarLoop]: 4613 mSDtfsCounter, 1020 mSDsluCounter, 12282 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 16895 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:49:07,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1044 Valid, 16895 Invalid, 762 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:49:07,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-12-14 15:49:07,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2498. [2021-12-14 15:49:07,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2464 states have (on average 1.8258928571428572) internal successors, (4499), 2466 states have internal predecessors, (4499), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-14 15:49:07,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4551 transitions. [2021-12-14 15:49:07,732 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4551 transitions. Word has length 178 [2021-12-14 15:49:07,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:49:07,733 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 4551 transitions. [2021-12-14 15:49:07,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:07,733 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4551 transitions. [2021-12-14 15:49:07,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:49:07,736 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:07,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:07,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:49:07,736 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:07,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:07,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1483309631, now seen corresponding path program 1 times [2021-12-14 15:49:07,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:07,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611844791] [2021-12-14 15:49:07,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:07,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:07,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:07,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:49:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:07,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:49:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:07,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:49:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:07,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:49:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:07,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:07,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:07,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611844791] [2021-12-14 15:49:07,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611844791] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:07,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:07,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:49:07,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379761004] [2021-12-14 15:49:07,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:07,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:49:07,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:07,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:49:07,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:49:07,923 INFO L87 Difference]: Start difference. First operand 2498 states and 4551 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:11,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:49:11,037 INFO L93 Difference]: Finished difference Result 3514 states and 6198 transitions. [2021-12-14 15:49:11,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 15:49:11,038 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-14 15:49:11,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:49:11,053 INFO L225 Difference]: With dead ends: 3514 [2021-12-14 15:49:11,054 INFO L226 Difference]: Without dead ends: 3157 [2021-12-14 15:49:11,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:49:11,058 INFO L933 BasicCegarLoop]: 4665 mSDtfsCounter, 5509 mSDsluCounter, 12878 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5528 SdHoareTripleChecker+Valid, 17543 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:49:11,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5528 Valid, 17543 Invalid, 2068 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 1952 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-14 15:49:11,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2021-12-14 15:49:11,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 2874. [2021-12-14 15:49:11,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2812 states have (on average 1.7976529160739687) internal successors, (5055), 2815 states have internal predecessors, (5055), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-12-14 15:49:11,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 5152 transitions. [2021-12-14 15:49:11,172 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 5152 transitions. Word has length 178 [2021-12-14 15:49:11,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:49:11,173 INFO L470 AbstractCegarLoop]: Abstraction has 2874 states and 5152 transitions. [2021-12-14 15:49:11,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:11,173 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 5152 transitions. [2021-12-14 15:49:11,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:49:11,175 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:11,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:11,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:49:11,176 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:11,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:11,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1935672389, now seen corresponding path program 1 times [2021-12-14 15:49:11,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:11,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4195460] [2021-12-14 15:49:11,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:11,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:11,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:11,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:49:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:11,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:49:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:11,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:49:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:11,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:49:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:11,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:11,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:11,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4195460] [2021-12-14 15:49:11,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4195460] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:11,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:11,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:49:11,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233233436] [2021-12-14 15:49:11,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:11,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:49:11,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:11,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:49:11,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:49:11,349 INFO L87 Difference]: Start difference. First operand 2874 states and 5152 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:13,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:49:13,380 INFO L93 Difference]: Finished difference Result 3912 states and 6843 transitions. [2021-12-14 15:49:13,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:49:13,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-14 15:49:13,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:49:13,393 INFO L225 Difference]: With dead ends: 3912 [2021-12-14 15:49:13,393 INFO L226 Difference]: Without dead ends: 3179 [2021-12-14 15:49:13,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:49:13,396 INFO L933 BasicCegarLoop]: 4608 mSDtfsCounter, 5073 mSDsluCounter, 16762 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5093 SdHoareTripleChecker+Valid, 21370 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:49:13,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5093 Valid, 21370 Invalid, 1597 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 15:49:13,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2021-12-14 15:49:13,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 2874. [2021-12-14 15:49:13,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2812 states have (on average 1.7969416785206258) internal successors, (5053), 2815 states have internal predecessors, (5053), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-12-14 15:49:13,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 5150 transitions. [2021-12-14 15:49:13,486 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 5150 transitions. Word has length 178 [2021-12-14 15:49:13,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:49:13,488 INFO L470 AbstractCegarLoop]: Abstraction has 2874 states and 5150 transitions. [2021-12-14 15:49:13,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:13,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 5150 transitions. [2021-12-14 15:49:13,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:49:13,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:13,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:13,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:49:13,491 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:13,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:13,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1324403331, now seen corresponding path program 1 times [2021-12-14 15:49:13,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:13,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021732475] [2021-12-14 15:49:13,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:13,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:13,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:13,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:49:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:13,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:49:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:13,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:49:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:13,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:49:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:13,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:13,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:13,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021732475] [2021-12-14 15:49:13,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021732475] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:13,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:13,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:49:13,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722270882] [2021-12-14 15:49:13,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:13,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:49:13,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:13,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:49:13,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:49:13,688 INFO L87 Difference]: Start difference. First operand 2874 states and 5150 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:16,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:49:16,977 INFO L93 Difference]: Finished difference Result 4423 states and 7658 transitions. [2021-12-14 15:49:16,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:49:16,984 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-14 15:49:16,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:49:17,006 INFO L225 Difference]: With dead ends: 4423 [2021-12-14 15:49:17,007 INFO L226 Difference]: Without dead ends: 3690 [2021-12-14 15:49:17,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:49:17,011 INFO L933 BasicCegarLoop]: 4728 mSDtfsCounter, 5634 mSDsluCounter, 17170 mSDsCounter, 0 mSdLazyCounter, 2729 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5653 SdHoareTripleChecker+Valid, 21898 SdHoareTripleChecker+Invalid, 2836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:49:17,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5653 Valid, 21898 Invalid, 2836 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 2729 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-14 15:49:17,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2021-12-14 15:49:17,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 3223. [2021-12-14 15:49:17,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 3133 states have (on average 1.7727417810405361) internal successors, (5554), 3137 states have internal predecessors, (5554), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2021-12-14 15:49:17,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 5695 transitions. [2021-12-14 15:49:17,150 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 5695 transitions. Word has length 178 [2021-12-14 15:49:17,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:49:17,151 INFO L470 AbstractCegarLoop]: Abstraction has 3223 states and 5695 transitions. [2021-12-14 15:49:17,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:17,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 5695 transitions. [2021-12-14 15:49:17,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:49:17,154 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:17,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:17,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:49:17,155 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:17,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:17,156 INFO L85 PathProgramCache]: Analyzing trace with hash -80788347, now seen corresponding path program 1 times [2021-12-14 15:49:17,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:17,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887906422] [2021-12-14 15:49:17,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:17,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:17,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:17,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:49:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:17,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:49:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:17,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:49:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:17,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:49:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:17,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:17,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:17,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887906422] [2021-12-14 15:49:17,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887906422] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:17,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:17,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:49:17,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410993849] [2021-12-14 15:49:17,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:17,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:49:17,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:17,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:49:17,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:49:17,338 INFO L87 Difference]: Start difference. First operand 3223 states and 5695 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:20,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:49:20,667 INFO L93 Difference]: Finished difference Result 5766 states and 9803 transitions. [2021-12-14 15:49:20,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:49:20,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-14 15:49:20,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:49:20,688 INFO L225 Difference]: With dead ends: 5766 [2021-12-14 15:49:20,688 INFO L226 Difference]: Without dead ends: 4684 [2021-12-14 15:49:20,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:49:20,694 INFO L933 BasicCegarLoop]: 4950 mSDtfsCounter, 5535 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 3038 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5554 SdHoareTripleChecker+Valid, 22714 SdHoareTripleChecker+Invalid, 3124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:49:20,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5554 Valid, 22714 Invalid, 3124 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3038 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-14 15:49:20,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4684 states. [2021-12-14 15:49:20,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4684 to 3923. [2021-12-14 15:49:20,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3777 states have (on average 1.736563410113847) internal successors, (6559), 3783 states have internal predecessors, (6559), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-14 15:49:20,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6792 transitions. [2021-12-14 15:49:20,851 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6792 transitions. Word has length 178 [2021-12-14 15:49:20,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:49:20,851 INFO L470 AbstractCegarLoop]: Abstraction has 3923 states and 6792 transitions. [2021-12-14 15:49:20,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:20,858 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6792 transitions. [2021-12-14 15:49:20,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:49:20,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:20,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:20,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:49:20,862 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:20,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:20,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1813545539, now seen corresponding path program 1 times [2021-12-14 15:49:20,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:20,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231693593] [2021-12-14 15:49:20,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:20,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:20,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:20,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:49:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:20,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:49:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:21,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:49:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:21,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:49:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:21,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:21,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:21,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231693593] [2021-12-14 15:49:21,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231693593] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:21,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:21,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:49:21,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700470060] [2021-12-14 15:49:21,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:21,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:49:21,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:21,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:49:21,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:49:21,023 INFO L87 Difference]: Start difference. First operand 3923 states and 6792 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:22,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:49:22,504 INFO L93 Difference]: Finished difference Result 6452 states and 10885 transitions. [2021-12-14 15:49:22,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:49:22,505 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-14 15:49:22,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:49:22,541 INFO L225 Difference]: With dead ends: 6452 [2021-12-14 15:49:22,541 INFO L226 Difference]: Without dead ends: 4670 [2021-12-14 15:49:22,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:49:22,552 INFO L933 BasicCegarLoop]: 4593 mSDtfsCounter, 5240 mSDsluCounter, 12610 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5260 SdHoareTripleChecker+Valid, 17203 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:49:22,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5260 Valid, 17203 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 15:49:22,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4670 states. [2021-12-14 15:49:22,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4670 to 3923. [2021-12-14 15:49:22,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3777 states have (on average 1.73523960815462) internal successors, (6554), 3783 states have internal predecessors, (6554), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-14 15:49:22,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6787 transitions. [2021-12-14 15:49:22,724 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6787 transitions. Word has length 178 [2021-12-14 15:49:22,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:49:22,724 INFO L470 AbstractCegarLoop]: Abstraction has 3923 states and 6787 transitions. [2021-12-14 15:49:22,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:22,725 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6787 transitions. [2021-12-14 15:49:22,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:49:22,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:22,728 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:22,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:49:22,729 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:22,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:22,729 INFO L85 PathProgramCache]: Analyzing trace with hash 890378113, now seen corresponding path program 1 times [2021-12-14 15:49:22,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:22,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29755456] [2021-12-14 15:49:22,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:22,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:22,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:22,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:49:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:22,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:49:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:22,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:49:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:22,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:49:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:22,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:22,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:22,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29755456] [2021-12-14 15:49:22,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29755456] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:22,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:22,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:49:22,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388414588] [2021-12-14 15:49:22,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:22,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:49:22,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:22,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:49:22,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:49:22,912 INFO L87 Difference]: Start difference. First operand 3923 states and 6787 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:24,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:49:24,660 INFO L93 Difference]: Finished difference Result 6446 states and 10858 transitions. [2021-12-14 15:49:24,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:49:24,661 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-14 15:49:24,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:49:24,672 INFO L225 Difference]: With dead ends: 6446 [2021-12-14 15:49:24,673 INFO L226 Difference]: Without dead ends: 4664 [2021-12-14 15:49:24,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:49:24,679 INFO L933 BasicCegarLoop]: 4589 mSDtfsCounter, 5072 mSDsluCounter, 16761 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5092 SdHoareTripleChecker+Valid, 21350 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:49:24,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5092 Valid, 21350 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 15:49:24,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4664 states. [2021-12-14 15:49:24,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4664 to 3923. [2021-12-14 15:49:24,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3777 states have (on average 1.7339158061953932) internal successors, (6549), 3783 states have internal predecessors, (6549), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-14 15:49:24,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6782 transitions. [2021-12-14 15:49:24,836 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6782 transitions. Word has length 178 [2021-12-14 15:49:24,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:49:24,837 INFO L470 AbstractCegarLoop]: Abstraction has 3923 states and 6782 transitions. [2021-12-14 15:49:24,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:24,837 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6782 transitions. [2021-12-14 15:49:24,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:49:24,840 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:24,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:24,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:49:24,841 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:24,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:24,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1276240515, now seen corresponding path program 1 times [2021-12-14 15:49:24,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:24,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787801275] [2021-12-14 15:49:24,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:24,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:24,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:24,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:49:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:24,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:49:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:24,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:49:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:25,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:49:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:25,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:25,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787801275] [2021-12-14 15:49:25,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787801275] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:25,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:25,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:49:25,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314008593] [2021-12-14 15:49:25,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:25,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:49:25,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:25,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:49:25,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:49:25,012 INFO L87 Difference]: Start difference. First operand 3923 states and 6782 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:26,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:49:26,374 INFO L93 Difference]: Finished difference Result 6440 states and 10831 transitions. [2021-12-14 15:49:26,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:49:26,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-14 15:49:26,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:49:26,386 INFO L225 Difference]: With dead ends: 6440 [2021-12-14 15:49:26,386 INFO L226 Difference]: Without dead ends: 4658 [2021-12-14 15:49:26,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:49:26,393 INFO L933 BasicCegarLoop]: 4585 mSDtfsCounter, 5236 mSDsluCounter, 12610 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5256 SdHoareTripleChecker+Valid, 17195 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:49:26,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5256 Valid, 17195 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 15:49:26,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2021-12-14 15:49:26,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 3923. [2021-12-14 15:49:26,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3777 states have (on average 1.7325920042361662) internal successors, (6544), 3783 states have internal predecessors, (6544), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-14 15:49:26,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6777 transitions. [2021-12-14 15:49:26,558 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6777 transitions. Word has length 178 [2021-12-14 15:49:26,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:49:26,559 INFO L470 AbstractCegarLoop]: Abstraction has 3923 states and 6777 transitions. [2021-12-14 15:49:26,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:26,559 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6777 transitions. [2021-12-14 15:49:26,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:49:26,562 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:26,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:26,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:49:26,562 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:26,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:26,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1011593025, now seen corresponding path program 1 times [2021-12-14 15:49:26,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:26,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250082124] [2021-12-14 15:49:26,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:26,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:26,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:26,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:49:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:26,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:49:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:26,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:49:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:26,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:49:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:26,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:26,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:26,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250082124] [2021-12-14 15:49:26,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250082124] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:26,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:26,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:49:26,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838697465] [2021-12-14 15:49:26,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:26,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:49:26,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:26,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:49:26,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:49:26,715 INFO L87 Difference]: Start difference. First operand 3923 states and 6777 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:29,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:49:29,775 INFO L93 Difference]: Finished difference Result 8330 states and 13794 transitions. [2021-12-14 15:49:29,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:49:29,775 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-14 15:49:29,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:49:29,793 INFO L225 Difference]: With dead ends: 8330 [2021-12-14 15:49:29,793 INFO L226 Difference]: Without dead ends: 6548 [2021-12-14 15:49:29,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:49:29,802 INFO L933 BasicCegarLoop]: 4922 mSDtfsCounter, 5504 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 2964 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5523 SdHoareTripleChecker+Valid, 22686 SdHoareTripleChecker+Invalid, 3049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:49:29,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5523 Valid, 22686 Invalid, 3049 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 2964 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-14 15:49:29,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6548 states. [2021-12-14 15:49:30,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6548 to 5345. [2021-12-14 15:49:30,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5345 states, 5087 states have (on average 1.6850796147041478) internal successors, (8572), 5097 states have internal predecessors, (8572), 194 states have call successors, (194), 54 states have call predecessors, (194), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2021-12-14 15:49:30,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5345 states to 5345 states and 8995 transitions. [2021-12-14 15:49:30,065 INFO L78 Accepts]: Start accepts. Automaton has 5345 states and 8995 transitions. Word has length 178 [2021-12-14 15:49:30,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:49:30,065 INFO L470 AbstractCegarLoop]: Abstraction has 5345 states and 8995 transitions. [2021-12-14 15:49:30,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:30,066 INFO L276 IsEmpty]: Start isEmpty. Operand 5345 states and 8995 transitions. [2021-12-14 15:49:30,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:49:30,069 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:30,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:30,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:49:30,070 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:30,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:30,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1352248637, now seen corresponding path program 1 times [2021-12-14 15:49:30,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:30,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336448124] [2021-12-14 15:49:30,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:30,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:30,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:30,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:49:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:30,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:49:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:30,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:49:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:30,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:49:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:30,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:30,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:30,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336448124] [2021-12-14 15:49:30,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336448124] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:30,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:30,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:49:30,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246186878] [2021-12-14 15:49:30,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:30,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:49:30,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:30,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:49:30,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:49:30,232 INFO L87 Difference]: Start difference. First operand 5345 states and 8995 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:33,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:49:33,392 INFO L93 Difference]: Finished difference Result 13508 states and 21962 transitions. [2021-12-14 15:49:33,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:49:33,393 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-14 15:49:33,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:49:33,428 INFO L225 Difference]: With dead ends: 13508 [2021-12-14 15:49:33,428 INFO L226 Difference]: Without dead ends: 10304 [2021-12-14 15:49:33,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:49:33,442 INFO L933 BasicCegarLoop]: 4917 mSDtfsCounter, 5503 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 2956 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5522 SdHoareTripleChecker+Valid, 22681 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:49:33,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5522 Valid, 22681 Invalid, 3041 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 2956 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-14 15:49:33,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10304 states. [2021-12-14 15:49:33,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10304 to 8188. [2021-12-14 15:49:33,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8188 states, 7706 states have (on average 1.6379444588632235) internal successors, (12622), 7724 states have internal predecessors, (12622), 362 states have call successors, (362), 102 states have call predecessors, (362), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2021-12-14 15:49:33,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8188 states to 8188 states and 13443 transitions. [2021-12-14 15:49:33,888 INFO L78 Accepts]: Start accepts. Automaton has 8188 states and 13443 transitions. Word has length 178 [2021-12-14 15:49:33,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:49:33,888 INFO L470 AbstractCegarLoop]: Abstraction has 8188 states and 13443 transitions. [2021-12-14 15:49:33,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:33,889 INFO L276 IsEmpty]: Start isEmpty. Operand 8188 states and 13443 transitions. [2021-12-14 15:49:33,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:49:33,900 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:33,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:33,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:49:33,901 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:33,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:33,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1619539713, now seen corresponding path program 1 times [2021-12-14 15:49:33,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:33,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26920502] [2021-12-14 15:49:33,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:33,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:33,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:33,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:33,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:49:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:34,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:49:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:34,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:49:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:34,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:49:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:34,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:34,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:34,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26920502] [2021-12-14 15:49:34,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26920502] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:34,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:34,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:49:34,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839431118] [2021-12-14 15:49:34,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:34,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:49:34,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:34,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:49:34,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:49:34,062 INFO L87 Difference]: Start difference. First operand 8188 states and 13443 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:37,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:49:37,939 INFO L93 Difference]: Finished difference Result 23857 states and 38344 transitions. [2021-12-14 15:49:37,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:49:37,939 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2021-12-14 15:49:37,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:49:37,999 INFO L225 Difference]: With dead ends: 23857 [2021-12-14 15:49:38,000 INFO L226 Difference]: Without dead ends: 17810 [2021-12-14 15:49:38,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:49:38,026 INFO L933 BasicCegarLoop]: 4679 mSDtfsCounter, 5599 mSDsluCounter, 17123 mSDsCounter, 0 mSdLazyCounter, 2639 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5618 SdHoareTripleChecker+Valid, 21802 SdHoareTripleChecker+Invalid, 2762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:49:38,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5618 Valid, 21802 Invalid, 2762 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 2639 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-14 15:49:38,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17810 states. [2021-12-14 15:49:38,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17810 to 13889. [2021-12-14 15:49:38,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13889 states, 12959 states have (on average 1.6007407979010726) internal successors, (20744), 12993 states have internal predecessors, (20744), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-14 15:49:38,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13889 states to 13889 states and 22415 transitions. [2021-12-14 15:49:38,885 INFO L78 Accepts]: Start accepts. Automaton has 13889 states and 22415 transitions. Word has length 178 [2021-12-14 15:49:38,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:49:38,886 INFO L470 AbstractCegarLoop]: Abstraction has 13889 states and 22415 transitions. [2021-12-14 15:49:38,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:49:38,886 INFO L276 IsEmpty]: Start isEmpty. Operand 13889 states and 22415 transitions. [2021-12-14 15:49:38,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:49:38,895 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:49:38,895 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:49:38,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:49:38,895 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:49:38,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:49:38,896 INFO L85 PathProgramCache]: Analyzing trace with hash -778448125, now seen corresponding path program 1 times [2021-12-14 15:49:38,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:49:38,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549281388] [2021-12-14 15:49:38,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:49:38,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:49:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:38,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:49:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:38,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:49:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:39,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:49:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:39,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:49:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:39,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:49:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:49:39,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:49:39,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:49:39,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549281388] [2021-12-14 15:49:39,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549281388] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:49:39,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:49:39,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:49:39,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960040161] [2021-12-14 15:49:39,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:49:39,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:49:39,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:49:39,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:49:39,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:49:39,050 INFO L87 Difference]: Start difference. First operand 13889 states and 22415 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)