./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.13.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.13.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8467ffbb1ccc6ad3e7cda0bad7b8fded9577e94940df507be3d09419f9a5a0e1 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 18:53:18,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 18:53:18,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 18:53:18,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 18:53:18,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 18:53:18,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 18:53:18,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 18:53:18,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 18:53:18,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 18:53:18,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 18:53:18,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 18:53:18,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 18:53:18,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 18:53:18,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 18:53:18,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 18:53:18,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 18:53:18,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 18:53:18,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 18:53:18,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 18:53:18,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 18:53:18,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 18:53:18,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 18:53:18,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 18:53:18,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 18:53:18,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 18:53:18,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 18:53:18,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 18:53:18,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 18:53:18,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 18:53:18,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 18:53:18,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 18:53:18,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 18:53:18,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 18:53:18,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 18:53:18,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 18:53:18,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 18:53:18,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 18:53:18,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 18:53:18,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 18:53:18,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 18:53:18,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 18:53:18,731 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 18:53:18,757 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 18:53:18,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 18:53:18,762 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 18:53:18,762 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 18:53:18,762 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 18:53:18,763 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 18:53:18,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 18:53:18,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 18:53:18,763 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 18:53:18,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 18:53:18,764 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 18:53:18,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 18:53:18,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 18:53:18,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 18:53:18,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 18:53:18,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 18:53:18,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 18:53:18,765 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 18:53:18,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 18:53:18,765 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 18:53:18,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 18:53:18,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 18:53:18,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 18:53:18,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 18:53:18,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 18:53:18,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 18:53:18,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 18:53:18,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 18:53:18,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 18:53:18,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 18:53:18,767 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 18:53:18,767 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 18:53:18,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 18:53:18,767 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 18:53:18,768 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8467ffbb1ccc6ad3e7cda0bad7b8fded9577e94940df507be3d09419f9a5a0e1 [2021-12-17 18:53:18,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 18:53:18,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 18:53:18,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 18:53:18,992 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 18:53:18,992 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 18:53:18,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.13.cil-1.c [2021-12-17 18:53:19,032 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/933f0c3fb/be61b73a1bad49f785482532e5f36e1b/FLAGeb21227d1 [2021-12-17 18:53:19,774 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 18:53:19,775 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.13.cil-1.c [2021-12-17 18:53:19,815 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/933f0c3fb/be61b73a1bad49f785482532e5f36e1b/FLAGeb21227d1 [2021-12-17 18:53:20,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/933f0c3fb/be61b73a1bad49f785482532e5f36e1b [2021-12-17 18:53:20,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 18:53:20,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 18:53:20,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 18:53:20,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 18:53:20,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 18:53:20,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:53:20" (1/1) ... [2021-12-17 18:53:20,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13fc378e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:20, skipping insertion in model container [2021-12-17 18:53:20,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:53:20" (1/1) ... [2021-12-17 18:53:20,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 18:53:20,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 18:53:21,340 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.13.cil-1.c[378560,378573] [2021-12-17 18:53:21,360 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.13.cil-1.c[383339,383352] [2021-12-17 18:53:21,602 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 18:53:21,612 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 18:53:22,264 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.13.cil-1.c[378560,378573] [2021-12-17 18:53:22,271 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.13.cil-1.c[383339,383352] [2021-12-17 18:53:22,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 18:53:22,345 INFO L208 MainTranslator]: Completed translation [2021-12-17 18:53:22,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:22 WrapperNode [2021-12-17 18:53:22,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 18:53:22,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 18:53:22,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 18:53:22,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 18:53:22,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:22" (1/1) ... [2021-12-17 18:53:22,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:22" (1/1) ... [2021-12-17 18:53:22,712 INFO L137 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13262 [2021-12-17 18:53:22,713 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 18:53:22,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 18:53:22,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 18:53:22,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 18:53:22,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:22" (1/1) ... [2021-12-17 18:53:22,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:22" (1/1) ... [2021-12-17 18:53:22,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:22" (1/1) ... [2021-12-17 18:53:22,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:22" (1/1) ... [2021-12-17 18:53:22,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:22" (1/1) ... [2021-12-17 18:53:22,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:22" (1/1) ... [2021-12-17 18:53:23,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:22" (1/1) ... [2021-12-17 18:53:23,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 18:53:23,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 18:53:23,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 18:53:23,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 18:53:23,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:22" (1/1) ... [2021-12-17 18:53:23,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 18:53:23,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:53:23,116 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) [2021-12-17 18:53:23,185 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 [2021-12-17 18:53:23,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 18:53:23,226 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-17 18:53:23,226 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-17 18:53:23,228 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 18:53:23,228 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 18:53:23,228 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-17 18:53:23,228 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-17 18:53:23,228 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-17 18:53:23,228 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-17 18:53:23,228 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-17 18:53:23,229 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-17 18:53:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-17 18:53:23,229 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-17 18:53:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-17 18:53:23,229 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-17 18:53:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 18:53:23,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 18:53:23,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 18:53:23,410 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 18:53:23,412 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 18:53:28,359 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 18:53:28,381 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 18:53:28,381 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-17 18:53:28,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:53:28 BoogieIcfgContainer [2021-12-17 18:53:28,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 18:53:28,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 18:53:28,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 18:53:28,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 18:53:28,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 06:53:20" (1/3) ... [2021-12-17 18:53:28,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@582a1c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:53:28, skipping insertion in model container [2021-12-17 18:53:28,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:22" (2/3) ... [2021-12-17 18:53:28,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@582a1c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:53:28, skipping insertion in model container [2021-12-17 18:53:28,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:53:28" (3/3) ... [2021-12-17 18:53:28,391 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.13.cil-1.c [2021-12-17 18:53:28,394 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 18:53:28,394 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 18:53:28,431 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 18:53:28,436 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 [2021-12-17 18:53:28,436 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 18:53:28,473 INFO L276 IsEmpty]: Start isEmpty. Operand has 2598 states, 2559 states have (on average 1.842125830402501) internal successors, (4714), 2564 states have internal predecessors, (4714), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2021-12-17 18:53:28,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:53:28,494 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:28,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:53:28,495 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:28,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:28,502 INFO L85 PathProgramCache]: Analyzing trace with hash -384467650, now seen corresponding path program 1 times [2021-12-17 18:53:28,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:28,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408980905] [2021-12-17 18:53:28,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:28,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:28,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:28,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:53:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:28,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:53:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:28,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:53:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:28,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:53:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:28,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:28,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408980905] [2021-12-17 18:53:28,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408980905] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:28,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:28,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 18:53:28,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966163693] [2021-12-17 18:53:28,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:28,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 18:53:28,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:28,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 18:53:28,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 18:53:28,977 INFO L87 Difference]: Start difference. First operand has 2598 states, 2559 states have (on average 1.842125830402501) internal successors, (4714), 2564 states have internal predecessors, (4714), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:30,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:30,480 INFO L93 Difference]: Finished difference Result 5340 states and 9793 transitions. [2021-12-17 18:53:30,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 18:53:30,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:53:30,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:30,500 INFO L225 Difference]: With dead ends: 5340 [2021-12-17 18:53:30,500 INFO L226 Difference]: Without dead ends: 2683 [2021-12-17 18:53:30,509 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 [2021-12-17 18:53:30,511 INFO L933 BasicCegarLoop]: 4741 mSDtfsCounter, 1121 mSDsluCounter, 12530 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 17271 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:30,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1146 Valid, 17271 Invalid, 821 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 18:53:30,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2021-12-17 18:53:30,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2530. [2021-12-17 18:53:30,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.824709185720016) internal successors, (4549), 2496 states have internal predecessors, (4549), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 18:53:30,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4605 transitions. [2021-12-17 18:53:30,631 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4605 transitions. Word has length 190 [2021-12-17 18:53:30,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:30,631 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4605 transitions. [2021-12-17 18:53:30,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:30,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4605 transitions. [2021-12-17 18:53:30,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:53:30,635 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:30,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:53:30,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 18:53:30,636 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:30,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:30,637 INFO L85 PathProgramCache]: Analyzing trace with hash 431579580, now seen corresponding path program 1 times [2021-12-17 18:53:30,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:30,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630419129] [2021-12-17 18:53:30,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:30,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:30,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:30,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:53:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:30,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:53:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:30,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:53:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:30,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:53:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:30,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:30,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:30,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630419129] [2021-12-17 18:53:30,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630419129] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:30,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:30,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 18:53:30,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690126764] [2021-12-17 18:53:30,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:30,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 18:53:30,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:30,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 18:53:30,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 18:53:30,844 INFO L87 Difference]: Start difference. First operand 2530 states and 4605 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:32,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:32,171 INFO L93 Difference]: Finished difference Result 3075 states and 5487 transitions. [2021-12-17 18:53:32,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 18:53:32,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:53:32,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:32,180 INFO L225 Difference]: With dead ends: 3075 [2021-12-17 18:53:32,180 INFO L226 Difference]: Without dead ends: 2683 [2021-12-17 18:53:32,182 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 [2021-12-17 18:53:32,183 INFO L933 BasicCegarLoop]: 4671 mSDtfsCounter, 1107 mSDsluCounter, 12327 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 16998 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:32,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 16998 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:53:32,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2021-12-17 18:53:32,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2530. [2021-12-17 18:53:32,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.8243080625752106) internal successors, (4548), 2496 states have internal predecessors, (4548), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 18:53:32,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4604 transitions. [2021-12-17 18:53:32,232 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4604 transitions. Word has length 190 [2021-12-17 18:53:32,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:32,233 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4604 transitions. [2021-12-17 18:53:32,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:32,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4604 transitions. [2021-12-17 18:53:32,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:53:32,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:32,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:53:32,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 18:53:32,235 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:32,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:32,236 INFO L85 PathProgramCache]: Analyzing trace with hash -217013190, now seen corresponding path program 1 times [2021-12-17 18:53:32,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:32,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422257132] [2021-12-17 18:53:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:32,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:32,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:32,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:53:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:32,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:53:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:32,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:53:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:32,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:53:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:32,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:32,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:32,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422257132] [2021-12-17 18:53:32,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422257132] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:32,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:32,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 18:53:32,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949552876] [2021-12-17 18:53:32,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:32,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 18:53:32,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:32,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 18:53:32,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 18:53:32,388 INFO L87 Difference]: Start difference. First operand 2530 states and 4604 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:33,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:33,901 INFO L93 Difference]: Finished difference Result 3070 states and 5479 transitions. [2021-12-17 18:53:33,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 18:53:33,901 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:53:33,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:33,911 INFO L225 Difference]: With dead ends: 3070 [2021-12-17 18:53:33,911 INFO L226 Difference]: Without dead ends: 2682 [2021-12-17 18:53:33,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-17 18:53:33,920 INFO L933 BasicCegarLoop]: 4625 mSDtfsCounter, 5056 mSDsluCounter, 12608 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5077 SdHoareTripleChecker+Valid, 17233 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:33,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5077 Valid, 17233 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 18:53:33,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2021-12-17 18:53:34,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 2530. [2021-12-17 18:53:34,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.823906939430405) internal successors, (4547), 2496 states have internal predecessors, (4547), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 18:53:34,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4603 transitions. [2021-12-17 18:53:34,030 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4603 transitions. Word has length 190 [2021-12-17 18:53:34,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:34,030 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4603 transitions. [2021-12-17 18:53:34,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:34,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4603 transitions. [2021-12-17 18:53:34,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:53:34,032 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:34,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:53:34,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 18:53:34,033 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:34,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:34,034 INFO L85 PathProgramCache]: Analyzing trace with hash 291765624, now seen corresponding path program 1 times [2021-12-17 18:53:34,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:34,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525115986] [2021-12-17 18:53:34,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:34,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:34,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:34,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:53:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:34,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:53:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:34,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:53:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:34,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:53:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:34,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:34,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525115986] [2021-12-17 18:53:34,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525115986] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:34,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:34,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:34,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196439592] [2021-12-17 18:53:34,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:34,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:34,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:34,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:34,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:34,174 INFO L87 Difference]: Start difference. First operand 2530 states and 4603 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:35,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:35,470 INFO L93 Difference]: Finished difference Result 3069 states and 5477 transitions. [2021-12-17 18:53:35,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 18:53:35,471 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:53:35,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:35,483 INFO L225 Difference]: With dead ends: 3069 [2021-12-17 18:53:35,485 INFO L226 Difference]: Without dead ends: 2681 [2021-12-17 18:53:35,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-17 18:53:35,490 INFO L933 BasicCegarLoop]: 4615 mSDtfsCounter, 5339 mSDsluCounter, 12687 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5360 SdHoareTripleChecker+Valid, 17302 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:35,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5360 Valid, 17302 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:53:35,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2021-12-17 18:53:35,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2530. [2021-12-17 18:53:35,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.8227035699959888) internal successors, (4544), 2496 states have internal predecessors, (4544), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 18:53:35,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4600 transitions. [2021-12-17 18:53:35,563 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4600 transitions. Word has length 190 [2021-12-17 18:53:35,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:35,569 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4600 transitions. [2021-12-17 18:53:35,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:35,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4600 transitions. [2021-12-17 18:53:35,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:53:35,571 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:35,572 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:53:35,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 18:53:35,572 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:35,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:35,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1984573188, now seen corresponding path program 1 times [2021-12-17 18:53:35,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:35,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974696174] [2021-12-17 18:53:35,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:35,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:35,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:35,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:53:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:35,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:53:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:35,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:53:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:35,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:53:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:35,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:35,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:35,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974696174] [2021-12-17 18:53:35,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974696174] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:35,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:35,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:35,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024295458] [2021-12-17 18:53:35,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:35,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:35,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:35,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:35,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:35,719 INFO L87 Difference]: Start difference. First operand 2530 states and 4600 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:37,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:37,144 INFO L93 Difference]: Finished difference Result 3095 states and 5519 transitions. [2021-12-17 18:53:37,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:53:37,144 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:53:37,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:37,153 INFO L225 Difference]: With dead ends: 3095 [2021-12-17 18:53:37,153 INFO L226 Difference]: Without dead ends: 2707 [2021-12-17 18:53:37,155 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 [2021-12-17 18:53:37,156 INFO L933 BasicCegarLoop]: 4662 mSDtfsCounter, 5333 mSDsluCounter, 12686 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5354 SdHoareTripleChecker+Valid, 17348 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:37,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5354 Valid, 17348 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 18:53:37,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2707 states. [2021-12-17 18:53:37,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2707 to 2530. [2021-12-17 18:53:37,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.8223024468511833) internal successors, (4543), 2496 states have internal predecessors, (4543), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 18:53:37,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4599 transitions. [2021-12-17 18:53:37,221 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4599 transitions. Word has length 190 [2021-12-17 18:53:37,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:37,222 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4599 transitions. [2021-12-17 18:53:37,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:37,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4599 transitions. [2021-12-17 18:53:37,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:53:37,224 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:37,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:53:37,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 18:53:37,225 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:37,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:37,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1486016386, now seen corresponding path program 1 times [2021-12-17 18:53:37,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:37,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356923144] [2021-12-17 18:53:37,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:37,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:37,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:37,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:53:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:37,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:53:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:37,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:53:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:37,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:53:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:37,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:37,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:37,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356923144] [2021-12-17 18:53:37,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356923144] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:37,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:37,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:37,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962508534] [2021-12-17 18:53:37,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:37,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:37,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:37,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:37,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:37,358 INFO L87 Difference]: Start difference. First operand 2530 states and 4599 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:39,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:39,081 INFO L93 Difference]: Finished difference Result 3094 states and 5514 transitions. [2021-12-17 18:53:39,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:53:39,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:53:39,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:39,091 INFO L225 Difference]: With dead ends: 3094 [2021-12-17 18:53:39,091 INFO L226 Difference]: Without dead ends: 2706 [2021-12-17 18:53:39,094 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 [2021-12-17 18:53:39,095 INFO L933 BasicCegarLoop]: 4658 mSDtfsCounter, 5153 mSDsluCounter, 16859 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5174 SdHoareTripleChecker+Valid, 21517 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:39,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5174 Valid, 21517 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 18:53:39,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2021-12-17 18:53:39,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 2530. [2021-12-17 18:53:39,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.821901323706378) internal successors, (4542), 2496 states have internal predecessors, (4542), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 18:53:39,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4598 transitions. [2021-12-17 18:53:39,155 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4598 transitions. Word has length 190 [2021-12-17 18:53:39,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:39,155 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4598 transitions. [2021-12-17 18:53:39,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:39,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4598 transitions. [2021-12-17 18:53:39,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:53:39,157 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:39,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:53:39,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 18:53:39,158 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:39,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:39,158 INFO L85 PathProgramCache]: Analyzing trace with hash -915744580, now seen corresponding path program 1 times [2021-12-17 18:53:39,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:39,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142217338] [2021-12-17 18:53:39,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:39,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:39,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:39,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:53:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:39,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:53:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:39,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:53:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:39,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:53:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:39,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:39,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:39,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142217338] [2021-12-17 18:53:39,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142217338] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:39,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:39,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 18:53:39,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579267648] [2021-12-17 18:53:39,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:39,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 18:53:39,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:39,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 18:53:39,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:53:39,334 INFO L87 Difference]: Start difference. First operand 2530 states and 4598 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:42,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:42,454 INFO L93 Difference]: Finished difference Result 3654 states and 6411 transitions. [2021-12-17 18:53:42,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 18:53:42,455 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:53:42,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:42,465 INFO L225 Difference]: With dead ends: 3654 [2021-12-17 18:53:42,465 INFO L226 Difference]: Without dead ends: 3266 [2021-12-17 18:53:42,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-17 18:53:42,468 INFO L933 BasicCegarLoop]: 5038 mSDtfsCounter, 5809 mSDsluCounter, 22669 mSDsCounter, 0 mSdLazyCounter, 3367 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5830 SdHoareTripleChecker+Valid, 27707 SdHoareTripleChecker+Invalid, 3460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:42,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5830 Valid, 27707 Invalid, 3460 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 3367 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-17 18:53:42,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3266 states. [2021-12-17 18:53:42,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3266 to 2936. [2021-12-17 18:53:42,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7908678982223771) internal successors, (5138), 2873 states have internal predecessors, (5138), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:53:42,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5243 transitions. [2021-12-17 18:53:42,550 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5243 transitions. Word has length 190 [2021-12-17 18:53:42,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:42,551 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5243 transitions. [2021-12-17 18:53:42,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:42,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5243 transitions. [2021-12-17 18:53:42,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:53:42,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:42,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:53:42,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 18:53:42,554 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:42,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:42,554 INFO L85 PathProgramCache]: Analyzing trace with hash 488124606, now seen corresponding path program 1 times [2021-12-17 18:53:42,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:42,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846967957] [2021-12-17 18:53:42,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:42,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:42,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:42,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:53:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:42,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:53:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:42,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:53:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:42,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:53:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:42,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:42,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:42,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846967957] [2021-12-17 18:53:42,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846967957] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:42,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:42,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:42,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415689385] [2021-12-17 18:53:42,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:42,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:42,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:42,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:42,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:42,697 INFO L87 Difference]: Start difference. First operand 2936 states and 5243 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:44,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:44,023 INFO L93 Difference]: Finished difference Result 4101 states and 7141 transitions. [2021-12-17 18:53:44,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:53:44,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:53:44,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:44,050 INFO L225 Difference]: With dead ends: 4101 [2021-12-17 18:53:44,050 INFO L226 Difference]: Without dead ends: 3307 [2021-12-17 18:53:44,054 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 [2021-12-17 18:53:44,055 INFO L933 BasicCegarLoop]: 4605 mSDtfsCounter, 5416 mSDsluCounter, 12684 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5437 SdHoareTripleChecker+Valid, 17289 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:44,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5437 Valid, 17289 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 18:53:44,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2021-12-17 18:53:44,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 2936. [2021-12-17 18:53:44,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7901707912164517) internal successors, (5136), 2873 states have internal predecessors, (5136), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:53:44,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5241 transitions. [2021-12-17 18:53:44,167 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5241 transitions. Word has length 190 [2021-12-17 18:53:44,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:44,168 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5241 transitions. [2021-12-17 18:53:44,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:44,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5241 transitions. [2021-12-17 18:53:44,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:53:44,170 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:44,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:53:44,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 18:53:44,170 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:44,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:44,170 INFO L85 PathProgramCache]: Analyzing trace with hash -297873284, now seen corresponding path program 1 times [2021-12-17 18:53:44,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:44,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108403254] [2021-12-17 18:53:44,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:44,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:44,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:44,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:53:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:44,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:53:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:44,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:53:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:44,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:53:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:44,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:44,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:44,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108403254] [2021-12-17 18:53:44,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108403254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:44,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:44,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:44,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552534908] [2021-12-17 18:53:44,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:44,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:44,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:44,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:44,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:44,308 INFO L87 Difference]: Start difference. First operand 2936 states and 5241 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:45,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:45,634 INFO L93 Difference]: Finished difference Result 4098 states and 7129 transitions. [2021-12-17 18:53:45,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:53:45,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:53:45,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:45,641 INFO L225 Difference]: With dead ends: 4098 [2021-12-17 18:53:45,642 INFO L226 Difference]: Without dead ends: 3304 [2021-12-17 18:53:45,644 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 [2021-12-17 18:53:45,645 INFO L933 BasicCegarLoop]: 4646 mSDtfsCounter, 5328 mSDsluCounter, 12686 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5349 SdHoareTripleChecker+Valid, 17332 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:45,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5349 Valid, 17332 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 18:53:45,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3304 states. [2021-12-17 18:53:45,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3304 to 2936. [2021-12-17 18:53:45,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7894736842105263) internal successors, (5134), 2873 states have internal predecessors, (5134), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:53:45,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5239 transitions. [2021-12-17 18:53:45,713 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5239 transitions. Word has length 190 [2021-12-17 18:53:45,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:45,713 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5239 transitions. [2021-12-17 18:53:45,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:45,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5239 transitions. [2021-12-17 18:53:45,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:53:45,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:45,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:53:45,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 18:53:45,715 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:45,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:45,716 INFO L85 PathProgramCache]: Analyzing trace with hash 369508606, now seen corresponding path program 1 times [2021-12-17 18:53:45,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:45,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967299955] [2021-12-17 18:53:45,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:45,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:45,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:45,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:53:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:45,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:53:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:45,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:53:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:45,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:53:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:45,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:45,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:45,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967299955] [2021-12-17 18:53:45,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967299955] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:45,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:45,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:45,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371496698] [2021-12-17 18:53:45,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:45,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:45,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:45,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:45,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:45,845 INFO L87 Difference]: Start difference. First operand 2936 states and 5239 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:47,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:47,422 INFO L93 Difference]: Finished difference Result 4095 states and 7117 transitions. [2021-12-17 18:53:47,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:53:47,423 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:53:47,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:47,430 INFO L225 Difference]: With dead ends: 4095 [2021-12-17 18:53:47,430 INFO L226 Difference]: Without dead ends: 3301 [2021-12-17 18:53:47,433 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 [2021-12-17 18:53:47,433 INFO L933 BasicCegarLoop]: 4642 mSDtfsCounter, 5148 mSDsluCounter, 16859 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5169 SdHoareTripleChecker+Valid, 21501 SdHoareTripleChecker+Invalid, 1638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:47,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5169 Valid, 21501 Invalid, 1638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 18:53:47,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3301 states. [2021-12-17 18:53:47,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3301 to 2936. [2021-12-17 18:53:47,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.788776577204601) internal successors, (5132), 2873 states have internal predecessors, (5132), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:53:47,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5237 transitions. [2021-12-17 18:53:47,504 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5237 transitions. Word has length 190 [2021-12-17 18:53:47,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:47,504 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5237 transitions. [2021-12-17 18:53:47,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:47,504 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5237 transitions. [2021-12-17 18:53:47,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:53:47,506 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:47,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:53:47,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 18:53:47,507 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:47,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:47,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1825720260, now seen corresponding path program 1 times [2021-12-17 18:53:47,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:47,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661406980] [2021-12-17 18:53:47,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:47,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:47,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:47,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:53:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:47,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:53:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:47,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:53:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:47,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:53:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:47,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:47,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:47,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661406980] [2021-12-17 18:53:47,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661406980] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:47,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:47,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:47,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298556209] [2021-12-17 18:53:47,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:47,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:47,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:47,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:47,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:47,626 INFO L87 Difference]: Start difference. First operand 2936 states and 5237 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:48,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:48,900 INFO L93 Difference]: Finished difference Result 4092 states and 7105 transitions. [2021-12-17 18:53:48,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:53:48,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:53:48,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:48,906 INFO L225 Difference]: With dead ends: 4092 [2021-12-17 18:53:48,907 INFO L226 Difference]: Without dead ends: 3298 [2021-12-17 18:53:48,909 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 [2021-12-17 18:53:48,910 INFO L933 BasicCegarLoop]: 4636 mSDtfsCounter, 5327 mSDsluCounter, 12686 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5348 SdHoareTripleChecker+Valid, 17322 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:48,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5348 Valid, 17322 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 18:53:48,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3298 states. [2021-12-17 18:53:48,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3298 to 2936. [2021-12-17 18:53:48,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7880794701986755) internal successors, (5130), 2873 states have internal predecessors, (5130), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:53:48,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5235 transitions. [2021-12-17 18:53:48,982 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5235 transitions. Word has length 190 [2021-12-17 18:53:48,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:48,984 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5235 transitions. [2021-12-17 18:53:48,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:48,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5235 transitions. [2021-12-17 18:53:48,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:53:48,986 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:48,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:53:48,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 18:53:48,986 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:48,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:48,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1480892098, now seen corresponding path program 1 times [2021-12-17 18:53:48,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:48,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531790594] [2021-12-17 18:53:48,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:48,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:49,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:49,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:53:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:49,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:53:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:49,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:53:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:49,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:53:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:49,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:49,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:49,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531790594] [2021-12-17 18:53:49,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531790594] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:49,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:49,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:49,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111575228] [2021-12-17 18:53:49,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:49,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:49,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:49,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:49,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:49,122 INFO L87 Difference]: Start difference. First operand 2936 states and 5235 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:50,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:50,606 INFO L93 Difference]: Finished difference Result 4086 states and 7087 transitions. [2021-12-17 18:53:50,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:53:50,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:53:50,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:50,613 INFO L225 Difference]: With dead ends: 4086 [2021-12-17 18:53:50,613 INFO L226 Difference]: Without dead ends: 3292 [2021-12-17 18:53:50,616 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 [2021-12-17 18:53:50,616 INFO L933 BasicCegarLoop]: 4630 mSDtfsCounter, 5145 mSDsluCounter, 16859 mSDsCounter, 0 mSdLazyCounter, 1522 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5166 SdHoareTripleChecker+Valid, 21489 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:50,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5166 Valid, 21489 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1522 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 18:53:50,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2021-12-17 18:53:50,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 2936. [2021-12-17 18:53:50,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7873823631927501) internal successors, (5128), 2873 states have internal predecessors, (5128), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:53:50,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5233 transitions. [2021-12-17 18:53:50,680 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5233 transitions. Word has length 190 [2021-12-17 18:53:50,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:50,681 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5233 transitions. [2021-12-17 18:53:50,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:50,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5233 transitions. [2021-12-17 18:53:50,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:53:50,683 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:50,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:53:50,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 18:53:50,683 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:50,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:50,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1044603584, now seen corresponding path program 1 times [2021-12-17 18:53:50,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:50,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413692111] [2021-12-17 18:53:50,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:50,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:50,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:50,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:53:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:50,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:53:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:50,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:53:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:50,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:53:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:50,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:50,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:50,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413692111] [2021-12-17 18:53:50,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413692111] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:50,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:50,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:50,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607595472] [2021-12-17 18:53:50,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:50,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:50,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:50,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:50,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:50,801 INFO L87 Difference]: Start difference. First operand 2936 states and 5233 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:52,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:52,310 INFO L93 Difference]: Finished difference Result 4083 states and 7075 transitions. [2021-12-17 18:53:52,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:53:52,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:53:52,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:52,316 INFO L225 Difference]: With dead ends: 4083 [2021-12-17 18:53:52,316 INFO L226 Difference]: Without dead ends: 3289 [2021-12-17 18:53:52,318 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 [2021-12-17 18:53:52,319 INFO L933 BasicCegarLoop]: 4626 mSDtfsCounter, 5143 mSDsluCounter, 16859 mSDsCounter, 0 mSdLazyCounter, 1510 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5164 SdHoareTripleChecker+Valid, 21485 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:52,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5164 Valid, 21485 Invalid, 1596 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 1510 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 18:53:52,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2021-12-17 18:53:52,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2936. [2021-12-17 18:53:52,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7866852561868247) internal successors, (5126), 2873 states have internal predecessors, (5126), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:53:52,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5231 transitions. [2021-12-17 18:53:52,384 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5231 transitions. Word has length 190 [2021-12-17 18:53:52,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:52,384 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5231 transitions. [2021-12-17 18:53:52,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:52,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5231 transitions. [2021-12-17 18:53:52,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:53:52,385 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:52,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:53:52,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 18:53:52,386 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:52,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:52,386 INFO L85 PathProgramCache]: Analyzing trace with hash 433334526, now seen corresponding path program 1 times [2021-12-17 18:53:52,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:52,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999409215] [2021-12-17 18:53:52,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:52,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:52,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:52,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:53:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:52,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:53:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:52,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:53:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:52,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:53:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:52,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:52,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999409215] [2021-12-17 18:53:52,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999409215] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:52,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:52,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:52,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574030075] [2021-12-17 18:53:52,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:52,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:52,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:52,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:52,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:52,499 INFO L87 Difference]: Start difference. First operand 2936 states and 5231 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:53,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:53,901 INFO L93 Difference]: Finished difference Result 4080 states and 7063 transitions. [2021-12-17 18:53:53,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:53:53,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:53:53,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:53,907 INFO L225 Difference]: With dead ends: 4080 [2021-12-17 18:53:53,907 INFO L226 Difference]: Without dead ends: 3286 [2021-12-17 18:53:53,910 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 [2021-12-17 18:53:53,910 INFO L933 BasicCegarLoop]: 4622 mSDtfsCounter, 5141 mSDsluCounter, 16859 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5162 SdHoareTripleChecker+Valid, 21481 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:53,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5162 Valid, 21481 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:53:53,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3286 states. [2021-12-17 18:53:53,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3286 to 2936. [2021-12-17 18:53:53,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7859881491808993) internal successors, (5124), 2873 states have internal predecessors, (5124), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:53:53,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5229 transitions. [2021-12-17 18:53:53,979 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5229 transitions. Word has length 190 [2021-12-17 18:53:53,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:53,980 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5229 transitions. [2021-12-17 18:53:53,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:53,980 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5229 transitions. [2021-12-17 18:53:53,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:53:53,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:53,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:53:53,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 18:53:53,982 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:53,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:53,982 INFO L85 PathProgramCache]: Analyzing trace with hash -971857152, now seen corresponding path program 1 times [2021-12-17 18:53:53,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:53,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983042368] [2021-12-17 18:53:53,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:53,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:54,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:54,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:53:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:54,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:53:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:54,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:53:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:54,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:53:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:54,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:54,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983042368] [2021-12-17 18:53:54,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983042368] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:54,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:54,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:54,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841665553] [2021-12-17 18:53:54,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:54,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:54,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:54,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:54,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:54,102 INFO L87 Difference]: Start difference. First operand 2936 states and 5229 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:55,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:55,337 INFO L93 Difference]: Finished difference Result 4077 states and 7051 transitions. [2021-12-17 18:53:55,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:53:55,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:53:55,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:55,344 INFO L225 Difference]: With dead ends: 4077 [2021-12-17 18:53:55,344 INFO L226 Difference]: Without dead ends: 3283 [2021-12-17 18:53:55,348 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 [2021-12-17 18:53:55,349 INFO L933 BasicCegarLoop]: 4589 mSDtfsCounter, 5369 mSDsluCounter, 12682 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5390 SdHoareTripleChecker+Valid, 17271 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:55,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5390 Valid, 17271 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 18:53:55,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3283 states. [2021-12-17 18:53:55,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3283 to 2936. [2021-12-17 18:53:55,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.785291042174974) internal successors, (5122), 2873 states have internal predecessors, (5122), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:53:55,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5227 transitions. [2021-12-17 18:53:55,418 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5227 transitions. Word has length 190 [2021-12-17 18:53:55,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:55,418 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5227 transitions. [2021-12-17 18:53:55,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:55,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5227 transitions. [2021-12-17 18:53:55,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:53:55,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:55,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:53:55,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 18:53:55,420 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:55,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:55,421 INFO L85 PathProgramCache]: Analyzing trace with hash 922476734, now seen corresponding path program 1 times [2021-12-17 18:53:55,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:55,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446990395] [2021-12-17 18:53:55,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:55,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:55,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:55,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:53:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:55,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:53:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:55,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:53:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:55,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:53:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:55,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:55,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:55,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446990395] [2021-12-17 18:53:55,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446990395] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:55,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:55,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:55,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783434014] [2021-12-17 18:53:55,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:55,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:55,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:55,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:55,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:55,550 INFO L87 Difference]: Start difference. First operand 2936 states and 5227 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:56,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:56,752 INFO L93 Difference]: Finished difference Result 4074 states and 7039 transitions. [2021-12-17 18:53:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:53:56,753 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:53:56,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:56,759 INFO L225 Difference]: With dead ends: 4074 [2021-12-17 18:53:56,759 INFO L226 Difference]: Without dead ends: 3280 [2021-12-17 18:53:56,761 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 [2021-12-17 18:53:56,762 INFO L933 BasicCegarLoop]: 4614 mSDtfsCounter, 5313 mSDsluCounter, 12684 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5334 SdHoareTripleChecker+Valid, 17298 SdHoareTripleChecker+Invalid, 1432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:56,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5334 Valid, 17298 Invalid, 1432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 18:53:56,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2021-12-17 18:53:56,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 2936. [2021-12-17 18:53:56,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7845939351690485) internal successors, (5120), 2873 states have internal predecessors, (5120), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:53:56,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5225 transitions. [2021-12-17 18:53:56,833 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5225 transitions. Word has length 190 [2021-12-17 18:53:56,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:56,833 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5225 transitions. [2021-12-17 18:53:56,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:56,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5225 transitions. [2021-12-17 18:53:56,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:53:56,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:56,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:53:56,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 18:53:56,836 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:56,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:56,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1925909696, now seen corresponding path program 1 times [2021-12-17 18:53:56,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:56,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490508168] [2021-12-17 18:53:56,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:56,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:56,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:56,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:53:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:56,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:53:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:56,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:53:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:56,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:53:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:56,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:56,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:56,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490508168] [2021-12-17 18:53:56,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490508168] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:56,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:56,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:56,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152781830] [2021-12-17 18:53:56,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:56,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:56,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:56,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:56,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:56,949 INFO L87 Difference]: Start difference. First operand 2936 states and 5225 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:58,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:58,368 INFO L93 Difference]: Finished difference Result 4071 states and 7027 transitions. [2021-12-17 18:53:58,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:53:58,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:53:58,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:58,375 INFO L225 Difference]: With dead ends: 4071 [2021-12-17 18:53:58,375 INFO L226 Difference]: Without dead ends: 3277 [2021-12-17 18:53:58,377 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 [2021-12-17 18:53:58,377 INFO L933 BasicCegarLoop]: 4610 mSDtfsCounter, 5133 mSDsluCounter, 16857 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5154 SdHoareTripleChecker+Valid, 21467 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:58,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5154 Valid, 21467 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:53:58,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2021-12-17 18:53:58,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 2936. [2021-12-17 18:53:58,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7838968281631231) internal successors, (5118), 2873 states have internal predecessors, (5118), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:53:58,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5223 transitions. [2021-12-17 18:53:58,455 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5223 transitions. Word has length 190 [2021-12-17 18:53:58,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:58,455 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5223 transitions. [2021-12-17 18:53:58,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:58,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5223 transitions. [2021-12-17 18:53:58,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:53:58,457 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:58,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:53:58,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 18:53:58,458 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:58,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:58,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1445890174, now seen corresponding path program 1 times [2021-12-17 18:53:58,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:58,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670137756] [2021-12-17 18:53:58,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:58,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:58,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:58,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:53:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:58,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:53:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:58,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:53:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:58,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:53:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:58,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:58,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:58,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670137756] [2021-12-17 18:53:58,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670137756] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:58,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:58,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:58,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198083014] [2021-12-17 18:53:58,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:58,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:58,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:58,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:58,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:58,604 INFO L87 Difference]: Start difference. First operand 2936 states and 5223 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:00,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:00,051 INFO L93 Difference]: Finished difference Result 4068 states and 7015 transitions. [2021-12-17 18:54:00,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:00,051 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:00,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:00,056 INFO L225 Difference]: With dead ends: 4068 [2021-12-17 18:54:00,056 INFO L226 Difference]: Without dead ends: 3274 [2021-12-17 18:54:00,058 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 [2021-12-17 18:54:00,058 INFO L933 BasicCegarLoop]: 4604 mSDtfsCounter, 5133 mSDsluCounter, 16857 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5154 SdHoareTripleChecker+Valid, 21461 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:00,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5154 Valid, 21461 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:54:00,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2021-12-17 18:54:00,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 2936. [2021-12-17 18:54:00,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7831997211571977) internal successors, (5116), 2873 states have internal predecessors, (5116), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:54:00,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5221 transitions. [2021-12-17 18:54:00,132 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5221 transitions. Word has length 190 [2021-12-17 18:54:00,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:00,132 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5221 transitions. [2021-12-17 18:54:00,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:00,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5221 transitions. [2021-12-17 18:54:00,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:00,134 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:00,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:00,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 18:54:00,135 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:00,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:00,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1831752576, now seen corresponding path program 1 times [2021-12-17 18:54:00,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:00,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280554934] [2021-12-17 18:54:00,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:00,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:00,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:00,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:00,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:00,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:00,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:00,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:00,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:00,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280554934] [2021-12-17 18:54:00,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280554934] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:00,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:00,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:00,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171607811] [2021-12-17 18:54:00,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:00,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:00,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:00,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:00,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:00,275 INFO L87 Difference]: Start difference. First operand 2936 states and 5221 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:01,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:01,546 INFO L93 Difference]: Finished difference Result 4062 states and 6997 transitions. [2021-12-17 18:54:01,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:01,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:01,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:01,551 INFO L225 Difference]: With dead ends: 4062 [2021-12-17 18:54:01,551 INFO L226 Difference]: Without dead ends: 3268 [2021-12-17 18:54:01,553 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 [2021-12-17 18:54:01,553 INFO L933 BasicCegarLoop]: 4598 mSDtfsCounter, 5308 mSDsluCounter, 12684 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5329 SdHoareTripleChecker+Valid, 17282 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:01,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5329 Valid, 17282 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 18:54:01,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2021-12-17 18:54:01,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 2936. [2021-12-17 18:54:01,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7825026141512723) internal successors, (5114), 2873 states have internal predecessors, (5114), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:54:01,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5219 transitions. [2021-12-17 18:54:01,627 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5219 transitions. Word has length 190 [2021-12-17 18:54:01,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:01,628 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5219 transitions. [2021-12-17 18:54:01,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:01,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5219 transitions. [2021-12-17 18:54:01,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:01,629 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:01,629 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:01,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 18:54:01,630 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:01,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:01,630 INFO L85 PathProgramCache]: Analyzing trace with hash -532089086, now seen corresponding path program 1 times [2021-12-17 18:54:01,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:01,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016223948] [2021-12-17 18:54:01,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:01,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:01,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:01,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:01,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:01,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:01,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:01,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:01,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:01,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016223948] [2021-12-17 18:54:01,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016223948] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:01,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:01,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:01,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301153090] [2021-12-17 18:54:01,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:01,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:01,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:01,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:01,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:01,732 INFO L87 Difference]: Start difference. First operand 2936 states and 5219 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:03,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:03,176 INFO L93 Difference]: Finished difference Result 4059 states and 6985 transitions. [2021-12-17 18:54:03,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:03,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:03,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:03,181 INFO L225 Difference]: With dead ends: 4059 [2021-12-17 18:54:03,182 INFO L226 Difference]: Without dead ends: 3265 [2021-12-17 18:54:03,183 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 [2021-12-17 18:54:03,184 INFO L933 BasicCegarLoop]: 4594 mSDtfsCounter, 5128 mSDsluCounter, 16857 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5149 SdHoareTripleChecker+Valid, 21451 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:03,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5149 Valid, 21451 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:54:03,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2021-12-17 18:54:03,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 2936. [2021-12-17 18:54:03,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.781805507145347) internal successors, (5112), 2873 states have internal predecessors, (5112), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:54:03,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5217 transitions. [2021-12-17 18:54:03,257 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5217 transitions. Word has length 190 [2021-12-17 18:54:03,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:03,257 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5217 transitions. [2021-12-17 18:54:03,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:03,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5217 transitions. [2021-12-17 18:54:03,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:03,259 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:03,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:03,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 18:54:03,259 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:03,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:03,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1855268032, now seen corresponding path program 1 times [2021-12-17 18:54:03,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:03,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170236046] [2021-12-17 18:54:03,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:03,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:03,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:03,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:03,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:03,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:03,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:03,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:03,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:03,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170236046] [2021-12-17 18:54:03,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170236046] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:03,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:03,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 18:54:03,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660765019] [2021-12-17 18:54:03,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:03,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 18:54:03,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:03,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 18:54:03,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:54:03,371 INFO L87 Difference]: Start difference. First operand 2936 states and 5217 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:06,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:06,484 INFO L93 Difference]: Finished difference Result 5358 states and 9027 transitions. [2021-12-17 18:54:06,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 18:54:06,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:06,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:06,491 INFO L225 Difference]: With dead ends: 5358 [2021-12-17 18:54:06,491 INFO L226 Difference]: Without dead ends: 4564 [2021-12-17 18:54:06,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-17 18:54:06,495 INFO L933 BasicCegarLoop]: 4939 mSDtfsCounter, 5948 mSDsluCounter, 22653 mSDsCounter, 0 mSdLazyCounter, 2968 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5984 SdHoareTripleChecker+Valid, 27592 SdHoareTripleChecker+Invalid, 3074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:06,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5984 Valid, 27592 Invalid, 3074 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [106 Valid, 2968 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-17 18:54:06,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2021-12-17 18:54:06,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 3742. [2021-12-17 18:54:06,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3615 states have (on average 1.7336099585062241) internal successors, (6267), 3623 states have internal predecessors, (6267), 96 states have call successors, (96), 25 states have call predecessors, (96), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 18:54:06,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 6472 transitions. [2021-12-17 18:54:06,667 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 6472 transitions. Word has length 190 [2021-12-17 18:54:06,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:06,667 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 6472 transitions. [2021-12-17 18:54:06,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:06,668 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 6472 transitions. [2021-12-17 18:54:06,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:06,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:06,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:06,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 18:54:06,670 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:06,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:06,670 INFO L85 PathProgramCache]: Analyzing trace with hash 41711426, now seen corresponding path program 1 times [2021-12-17 18:54:06,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:06,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014026947] [2021-12-17 18:54:06,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:06,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:06,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:06,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:06,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:06,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:06,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:06,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:06,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:06,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014026947] [2021-12-17 18:54:06,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014026947] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:06,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:06,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:06,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445925332] [2021-12-17 18:54:06,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:06,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:06,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:06,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:06,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:06,777 INFO L87 Difference]: Start difference. First operand 3742 states and 6472 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:08,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:08,265 INFO L93 Difference]: Finished difference Result 6009 states and 10036 transitions. [2021-12-17 18:54:08,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:08,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:08,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:08,272 INFO L225 Difference]: With dead ends: 6009 [2021-12-17 18:54:08,272 INFO L226 Difference]: Without dead ends: 4409 [2021-12-17 18:54:08,275 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 [2021-12-17 18:54:08,276 INFO L933 BasicCegarLoop]: 4574 mSDtfsCounter, 5149 mSDsluCounter, 16855 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5170 SdHoareTripleChecker+Valid, 21429 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:08,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5170 Valid, 21429 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:54:08,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2021-12-17 18:54:08,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 3742. [2021-12-17 18:54:08,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3615 states have (on average 1.7325034578146612) internal successors, (6263), 3623 states have internal predecessors, (6263), 96 states have call successors, (96), 25 states have call predecessors, (96), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 18:54:08,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 6468 transitions. [2021-12-17 18:54:08,417 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 6468 transitions. Word has length 190 [2021-12-17 18:54:08,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:08,417 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 6468 transitions. [2021-12-17 18:54:08,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:08,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 6468 transitions. [2021-12-17 18:54:08,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:08,419 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:08,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:08,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 18:54:08,419 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:08,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:08,420 INFO L85 PathProgramCache]: Analyzing trace with hash 379998976, now seen corresponding path program 1 times [2021-12-17 18:54:08,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:08,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515020894] [2021-12-17 18:54:08,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:08,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:08,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:08,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:08,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:08,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:08,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:08,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:08,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:08,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515020894] [2021-12-17 18:54:08,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515020894] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:08,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:08,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:08,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264447036] [2021-12-17 18:54:08,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:08,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:08,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:08,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:08,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:08,525 INFO L87 Difference]: Start difference. First operand 3742 states and 6468 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:10,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:10,005 INFO L93 Difference]: Finished difference Result 6000 states and 10006 transitions. [2021-12-17 18:54:10,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:10,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:10,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:10,019 INFO L225 Difference]: With dead ends: 6000 [2021-12-17 18:54:10,020 INFO L226 Difference]: Without dead ends: 4400 [2021-12-17 18:54:10,023 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 [2021-12-17 18:54:10,023 INFO L933 BasicCegarLoop]: 4583 mSDtfsCounter, 5125 mSDsluCounter, 16857 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5146 SdHoareTripleChecker+Valid, 21440 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:10,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5146 Valid, 21440 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:54:10,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4400 states. [2021-12-17 18:54:10,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4400 to 3742. [2021-12-17 18:54:10,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3615 states have (on average 1.7313969571230983) internal successors, (6259), 3623 states have internal predecessors, (6259), 96 states have call successors, (96), 25 states have call predecessors, (96), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 18:54:10,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 6464 transitions. [2021-12-17 18:54:10,157 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 6464 transitions. Word has length 190 [2021-12-17 18:54:10,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:10,157 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 6464 transitions. [2021-12-17 18:54:10,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:10,157 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 6464 transitions. [2021-12-17 18:54:10,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:10,158 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:10,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:10,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 18:54:10,159 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:10,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:10,160 INFO L85 PathProgramCache]: Analyzing trace with hash 806553474, now seen corresponding path program 1 times [2021-12-17 18:54:10,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:10,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733155117] [2021-12-17 18:54:10,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:10,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:10,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:10,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:10,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:10,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:10,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:10,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:10,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:10,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733155117] [2021-12-17 18:54:10,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733155117] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:10,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:10,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:10,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170592022] [2021-12-17 18:54:10,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:10,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:10,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:10,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:10,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:10,270 INFO L87 Difference]: Start difference. First operand 3742 states and 6464 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:11,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:11,572 INFO L93 Difference]: Finished difference Result 5991 states and 9976 transitions. [2021-12-17 18:54:11,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:11,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:11,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:11,579 INFO L225 Difference]: With dead ends: 5991 [2021-12-17 18:54:11,579 INFO L226 Difference]: Without dead ends: 4391 [2021-12-17 18:54:11,582 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 [2021-12-17 18:54:11,582 INFO L933 BasicCegarLoop]: 4579 mSDtfsCounter, 5301 mSDsluCounter, 12684 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5322 SdHoareTripleChecker+Valid, 17263 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:11,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5322 Valid, 17263 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 18:54:11,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4391 states. [2021-12-17 18:54:11,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4391 to 3742. [2021-12-17 18:54:11,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3615 states have (on average 1.7302904564315353) internal successors, (6255), 3623 states have internal predecessors, (6255), 96 states have call successors, (96), 25 states have call predecessors, (96), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 18:54:11,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 6460 transitions. [2021-12-17 18:54:11,748 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 6460 transitions. Word has length 190 [2021-12-17 18:54:11,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:11,749 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 6460 transitions. [2021-12-17 18:54:11,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:11,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 6460 transitions. [2021-12-17 18:54:11,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:11,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:11,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:11,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 18:54:11,751 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:11,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:11,751 INFO L85 PathProgramCache]: Analyzing trace with hash 266123968, now seen corresponding path program 1 times [2021-12-17 18:54:11,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:11,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728047973] [2021-12-17 18:54:11,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:11,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:11,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:11,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:11,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:11,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:11,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:11,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:11,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:11,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728047973] [2021-12-17 18:54:11,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728047973] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:11,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:11,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:11,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446289386] [2021-12-17 18:54:11,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:11,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:11,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:11,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:11,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:11,865 INFO L87 Difference]: Start difference. First operand 3742 states and 6460 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:13,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:13,145 INFO L93 Difference]: Finished difference Result 5982 states and 9946 transitions. [2021-12-17 18:54:13,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:13,145 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:13,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:13,152 INFO L225 Difference]: With dead ends: 5982 [2021-12-17 18:54:13,152 INFO L226 Difference]: Without dead ends: 4382 [2021-12-17 18:54:13,156 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 [2021-12-17 18:54:13,156 INFO L933 BasicCegarLoop]: 4573 mSDtfsCounter, 5302 mSDsluCounter, 12684 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5323 SdHoareTripleChecker+Valid, 17257 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:13,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5323 Valid, 17257 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 18:54:13,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2021-12-17 18:54:13,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 3742. [2021-12-17 18:54:13,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3615 states have (on average 1.7291839557399724) internal successors, (6251), 3623 states have internal predecessors, (6251), 96 states have call successors, (96), 25 states have call predecessors, (96), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 18:54:13,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 6456 transitions. [2021-12-17 18:54:13,298 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 6456 transitions. Word has length 190 [2021-12-17 18:54:13,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:13,299 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 6456 transitions. [2021-12-17 18:54:13,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:13,299 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 6456 transitions. [2021-12-17 18:54:13,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:13,300 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:13,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:13,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-17 18:54:13,301 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:13,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:13,301 INFO L85 PathProgramCache]: Analyzing trace with hash 110143426, now seen corresponding path program 1 times [2021-12-17 18:54:13,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:13,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820338344] [2021-12-17 18:54:13,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:13,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:13,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:13,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:13,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:13,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:13,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:13,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:13,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:13,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820338344] [2021-12-17 18:54:13,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820338344] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:13,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:13,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 18:54:13,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260619462] [2021-12-17 18:54:13,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:13,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 18:54:13,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:13,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 18:54:13,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:54:13,433 INFO L87 Difference]: Start difference. First operand 3742 states and 6456 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:16,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:16,213 INFO L93 Difference]: Finished difference Result 8222 states and 13478 transitions. [2021-12-17 18:54:16,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 18:54:16,213 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:16,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:16,224 INFO L225 Difference]: With dead ends: 8222 [2021-12-17 18:54:16,224 INFO L226 Difference]: Without dead ends: 6622 [2021-12-17 18:54:16,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-17 18:54:16,230 INFO L933 BasicCegarLoop]: 4918 mSDtfsCounter, 6014 mSDsluCounter, 18293 mSDsCounter, 0 mSdLazyCounter, 2751 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6034 SdHoareTripleChecker+Valid, 23211 SdHoareTripleChecker+Invalid, 2885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:16,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6034 Valid, 23211 Invalid, 2885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2751 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-17 18:54:16,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6622 states. [2021-12-17 18:54:16,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6622 to 5342. [2021-12-17 18:54:16,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5342 states, 5091 states have (on average 1.671380868198782) internal successors, (8509), 5113 states have internal predecessors, (8509), 182 states have call successors, (182), 49 states have call predecessors, (182), 67 states have return successors, (243), 187 states have call predecessors, (243), 180 states have call successors, (243) [2021-12-17 18:54:16,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5342 states to 5342 states and 8934 transitions. [2021-12-17 18:54:16,499 INFO L78 Accepts]: Start accepts. Automaton has 5342 states and 8934 transitions. Word has length 190 [2021-12-17 18:54:16,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:16,499 INFO L470 AbstractCegarLoop]: Abstraction has 5342 states and 8934 transitions. [2021-12-17 18:54:16,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:16,499 INFO L276 IsEmpty]: Start isEmpty. Operand 5342 states and 8934 transitions. [2021-12-17 18:54:16,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:16,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:16,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:16,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-17 18:54:16,501 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:16,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:16,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1677726396, now seen corresponding path program 1 times [2021-12-17 18:54:16,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:16,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685891440] [2021-12-17 18:54:16,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:16,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:16,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:16,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:16,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:16,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:16,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:16,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:16,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:16,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685891440] [2021-12-17 18:54:16,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685891440] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:16,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:16,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 18:54:16,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406358821] [2021-12-17 18:54:16,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:16,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 18:54:16,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:16,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 18:54:16,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 18:54:16,686 INFO L87 Difference]: Start difference. First operand 5342 states and 8934 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:19,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:19,779 INFO L93 Difference]: Finished difference Result 14087 states and 22564 transitions. [2021-12-17 18:54:19,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 18:54:19,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:19,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:19,796 INFO L225 Difference]: With dead ends: 14087 [2021-12-17 18:54:19,797 INFO L226 Difference]: Without dead ends: 10888 [2021-12-17 18:54:19,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-17 18:54:19,804 INFO L933 BasicCegarLoop]: 5231 mSDtfsCounter, 6000 mSDsluCounter, 13245 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6046 SdHoareTripleChecker+Valid, 18476 SdHoareTripleChecker+Invalid, 2554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:19,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6046 Valid, 18476 Invalid, 2554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2421 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-17 18:54:19,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10888 states. [2021-12-17 18:54:20,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10888 to 8464. [2021-12-17 18:54:20,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8464 states, 7970 states have (on average 1.6155583437892096) internal successors, (12876), 8019 states have internal predecessors, (12876), 358 states have call successors, (358), 97 states have call predecessors, (358), 134 states have return successors, (475), 355 states have call predecessors, (475), 356 states have call successors, (475) [2021-12-17 18:54:20,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8464 states to 8464 states and 13709 transitions. [2021-12-17 18:54:20,322 INFO L78 Accepts]: Start accepts. Automaton has 8464 states and 13709 transitions. Word has length 190 [2021-12-17 18:54:20,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:20,323 INFO L470 AbstractCegarLoop]: Abstraction has 8464 states and 13709 transitions. [2021-12-17 18:54:20,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:20,323 INFO L276 IsEmpty]: Start isEmpty. Operand 8464 states and 13709 transitions. [2021-12-17 18:54:20,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-17 18:54:20,332 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:20,332 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:20,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-17 18:54:20,332 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:20,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:20,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1020287586, now seen corresponding path program 1 times [2021-12-17 18:54:20,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:20,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562991637] [2021-12-17 18:54:20,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:20,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:20,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:20,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:20,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:20,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:20,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:20,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 18:54:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:20,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 18:54:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:20,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 18:54:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:20,507 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 18:54:20,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:20,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562991637] [2021-12-17 18:54:20,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562991637] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 18:54:20,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658425509] [2021-12-17 18:54:20,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:20,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 18:54:20,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:54:20,509 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 18:54:20,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 18:54:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:20,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 18:54:20,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 18:54:21,139 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-17 18:54:21,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 18:54:21,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658425509] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:21,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 18:54:21,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 18:54:21,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010450132] [2021-12-17 18:54:21,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:21,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 18:54:21,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:21,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 18:54:21,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:54:21,140 INFO L87 Difference]: Start difference. First operand 8464 states and 13709 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:54:22,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:22,075 INFO L93 Difference]: Finished difference Result 21025 states and 33257 transitions. [2021-12-17 18:54:22,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 18:54:22,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 309 [2021-12-17 18:54:22,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:22,101 INFO L225 Difference]: With dead ends: 21025 [2021-12-17 18:54:22,101 INFO L226 Difference]: Without dead ends: 14704 [2021-12-17 18:54:22,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:54:22,115 INFO L933 BasicCegarLoop]: 4599 mSDtfsCounter, 4473 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4473 SdHoareTripleChecker+Valid, 5176 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:22,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4473 Valid, 5176 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 18:54:22,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14704 states. [2021-12-17 18:54:23,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14704 to 14668. [2021-12-17 18:54:23,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14668 states, 13704 states have (on average 1.5774956217162872) internal successors, (21618), 13799 states have internal predecessors, (21618), 694 states have call successors, (694), 193 states have call predecessors, (694), 268 states have return successors, (923), 683 states have call predecessors, (923), 692 states have call successors, (923) [2021-12-17 18:54:23,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14668 states to 14668 states and 23235 transitions. [2021-12-17 18:54:23,135 INFO L78 Accepts]: Start accepts. Automaton has 14668 states and 23235 transitions. Word has length 309 [2021-12-17 18:54:23,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:23,135 INFO L470 AbstractCegarLoop]: Abstraction has 14668 states and 23235 transitions. [2021-12-17 18:54:23,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:54:23,135 INFO L276 IsEmpty]: Start isEmpty. Operand 14668 states and 23235 transitions. [2021-12-17 18:54:23,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-17 18:54:23,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:23,151 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:23,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-17 18:54:23,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-17 18:54:23,362 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:23,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:23,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1774320002, now seen corresponding path program 1 times [2021-12-17 18:54:23,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:23,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098289058] [2021-12-17 18:54:23,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:23,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:23,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:23,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:23,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:23,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:23,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:23,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 18:54:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:23,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 18:54:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:23,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 18:54:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 18:54:23,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:23,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098289058] [2021-12-17 18:54:23,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098289058] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 18:54:23,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099115493] [2021-12-17 18:54:23,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:23,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 18:54:23,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:54:23,545 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 18:54:23,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 18:54:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:23,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 1327 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 18:54:23,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 18:54:24,173 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-17 18:54:24,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 18:54:24,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099115493] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:24,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 18:54:24,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 18:54:24,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234299512] [2021-12-17 18:54:24,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:24,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 18:54:24,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:24,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 18:54:24,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:54:24,175 INFO L87 Difference]: Start difference. First operand 14668 states and 23235 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 2 states have internal predecessors, (254), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:54:26,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:26,001 INFO L93 Difference]: Finished difference Result 39557 states and 61947 transitions. [2021-12-17 18:54:26,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 18:54:26,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 2 states have internal predecessors, (254), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 309 [2021-12-17 18:54:26,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:26,065 INFO L225 Difference]: With dead ends: 39557 [2021-12-17 18:54:26,066 INFO L226 Difference]: Without dead ends: 27032 [2021-12-17 18:54:26,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:54:26,094 INFO L933 BasicCegarLoop]: 4599 mSDtfsCounter, 4461 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4461 SdHoareTripleChecker+Valid, 5176 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:26,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4461 Valid, 5176 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 18:54:26,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27032 states. [2021-12-17 18:54:28,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27032 to 26964. [2021-12-17 18:54:28,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26964 states, 25076 states have (on average 1.5535970649226352) internal successors, (38958), 25263 states have internal predecessors, (38958), 1350 states have call successors, (1350), 385 states have call predecessors, (1350), 536 states have return successors, (1803), 1323 states have call predecessors, (1803), 1348 states have call successors, (1803) [2021-12-17 18:54:28,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26964 states to 26964 states and 42111 transitions. [2021-12-17 18:54:28,304 INFO L78 Accepts]: Start accepts. Automaton has 26964 states and 42111 transitions. Word has length 309 [2021-12-17 18:54:28,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:28,305 INFO L470 AbstractCegarLoop]: Abstraction has 26964 states and 42111 transitions. [2021-12-17 18:54:28,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 2 states have internal predecessors, (254), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:54:28,305 INFO L276 IsEmpty]: Start isEmpty. Operand 26964 states and 42111 transitions. [2021-12-17 18:54:28,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-17 18:54:28,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:28,333 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:28,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 18:54:28,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-17 18:54:28,547 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:28,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:28,548 INFO L85 PathProgramCache]: Analyzing trace with hash -170833758, now seen corresponding path program 1 times [2021-12-17 18:54:28,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:28,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946929376] [2021-12-17 18:54:28,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:28,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:28,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:28,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:28,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:28,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:28,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:28,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 18:54:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:28,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 18:54:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:28,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 18:54:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:28,717 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 18:54:28,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:28,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946929376] [2021-12-17 18:54:28,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946929376] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 18:54:28,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054002841] [2021-12-17 18:54:28,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:28,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 18:54:28,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:54:28,719 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 18:54:28,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 18:54:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:28,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 18:54:28,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 18:54:29,302 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-17 18:54:29,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 18:54:29,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054002841] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:29,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 18:54:29,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 18:54:29,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35148761] [2021-12-17 18:54:29,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:29,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 18:54:29,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:29,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 18:54:29,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:54:29,303 INFO L87 Difference]: Start difference. First operand 26964 states and 42111 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:54:33,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:33,438 INFO L93 Difference]: Finished difference Result 76285 states and 118783 transitions. [2021-12-17 18:54:33,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 18:54:33,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 309 [2021-12-17 18:54:33,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:33,557 INFO L225 Difference]: With dead ends: 76285 [2021-12-17 18:54:33,557 INFO L226 Difference]: Without dead ends: 51464 [2021-12-17 18:54:33,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:54:33,608 INFO L933 BasicCegarLoop]: 4599 mSDtfsCounter, 4497 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4497 SdHoareTripleChecker+Valid, 5176 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:33,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4497 Valid, 5176 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 18:54:33,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51464 states. [2021-12-17 18:54:37,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51464 to 51332. [2021-12-17 18:54:37,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51332 states, 47628 states have (on average 1.5400604686318973) internal successors, (73350), 47999 states have internal predecessors, (73350), 2630 states have call successors, (2630), 769 states have call predecessors, (2630), 1072 states have return successors, (3531), 2571 states have call predecessors, (3531), 2628 states have call successors, (3531) [2021-12-17 18:54:37,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51332 states to 51332 states and 79511 transitions. [2021-12-17 18:54:37,906 INFO L78 Accepts]: Start accepts. Automaton has 51332 states and 79511 transitions. Word has length 309 [2021-12-17 18:54:37,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:37,907 INFO L470 AbstractCegarLoop]: Abstraction has 51332 states and 79511 transitions. [2021-12-17 18:54:37,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:54:37,907 INFO L276 IsEmpty]: Start isEmpty. Operand 51332 states and 79511 transitions. [2021-12-17 18:54:37,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-17 18:54:37,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:37,960 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:37,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-17 18:54:38,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 18:54:38,160 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:38,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:38,161 INFO L85 PathProgramCache]: Analyzing trace with hash 631211970, now seen corresponding path program 1 times [2021-12-17 18:54:38,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:38,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645929902] [2021-12-17 18:54:38,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:38,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:38,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:38,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:38,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:38,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:38,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:38,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 18:54:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:38,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 18:54:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:38,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 18:54:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:38,311 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 18:54:38,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:38,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645929902] [2021-12-17 18:54:38,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645929902] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 18:54:38,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064038025] [2021-12-17 18:54:38,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:38,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 18:54:38,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:54:38,313 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 18:54:38,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 18:54:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:38,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 18:54:38,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 18:54:38,921 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-17 18:54:38,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 18:54:38,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064038025] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:38,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 18:54:38,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 18:54:38,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944414559] [2021-12-17 18:54:38,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:38,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 18:54:38,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:38,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 18:54:38,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:54:38,922 INFO L87 Difference]: Start difference. First operand 51332 states and 79511 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:54:47,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:47,086 INFO L93 Difference]: Finished difference Result 149069 states and 231367 transitions. [2021-12-17 18:54:47,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 18:54:47,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 309 [2021-12-17 18:54:47,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:47,377 INFO L225 Difference]: With dead ends: 149069 [2021-12-17 18:54:47,378 INFO L226 Difference]: Without dead ends: 99880 [2021-12-17 18:54:47,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:54:47,490 INFO L933 BasicCegarLoop]: 4599 mSDtfsCounter, 4485 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4485 SdHoareTripleChecker+Valid, 5176 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:47,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4485 Valid, 5176 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 18:54:47,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99880 states. [2021-12-17 18:54:56,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99880 to 99620. [2021-12-17 18:54:56,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99620 states, 92348 states have (on average 1.5328756443019882) internal successors, (141558), 93087 states have internal predecessors, (141558), 5126 states have call successors, (5126), 1537 states have call predecessors, (5126), 2144 states have return successors, (6923), 5003 states have call predecessors, (6923), 5124 states have call successors, (6923) [2021-12-17 18:54:56,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99620 states to 99620 states and 153607 transitions. [2021-12-17 18:54:56,382 INFO L78 Accepts]: Start accepts. Automaton has 99620 states and 153607 transitions. Word has length 309 [2021-12-17 18:54:56,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:56,382 INFO L470 AbstractCegarLoop]: Abstraction has 99620 states and 153607 transitions. [2021-12-17 18:54:56,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:54:56,383 INFO L276 IsEmpty]: Start isEmpty. Operand 99620 states and 153607 transitions. [2021-12-17 18:54:56,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-17 18:54:56,472 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:56,472 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:56,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 18:54:56,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 18:54:56,680 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:56,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:56,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1568966942, now seen corresponding path program 1 times [2021-12-17 18:54:56,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:56,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590267799] [2021-12-17 18:54:56,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:56,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:56,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:56,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:56,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:56,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:56,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:56,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 18:54:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:56,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 18:54:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:56,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 18:54:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:56,819 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 18:54:56,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:56,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590267799] [2021-12-17 18:54:56,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590267799] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 18:54:56,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275470173] [2021-12-17 18:54:56,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:56,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 18:54:56,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:54:56,821 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 18:54:56,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 18:54:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:57,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 18:54:57,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 18:54:57,345 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-17 18:54:57,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 18:54:57,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275470173] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:57,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 18:54:57,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 18:54:57,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830925156] [2021-12-17 18:54:57,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:57,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 18:54:57,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:57,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 18:54:57,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:54:57,348 INFO L87 Difference]: Start difference. First operand 99620 states and 153607 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:55:13,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:55:13,262 INFO L93 Difference]: Finished difference Result 293293 states and 454359 transitions. [2021-12-17 18:55:13,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 18:55:13,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 309 [2021-12-17 18:55:13,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:55:13,820 INFO L225 Difference]: With dead ends: 293293 [2021-12-17 18:55:13,821 INFO L226 Difference]: Without dead ends: 195816 [2021-12-17 18:55:14,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:55:14,141 INFO L933 BasicCegarLoop]: 4599 mSDtfsCounter, 4503 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4503 SdHoareTripleChecker+Valid, 5176 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:55:14,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4503 Valid, 5176 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 18:55:14,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195816 states.