./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.09.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_label48+token_ring.09.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d1799d95d0e216b78a87282e1c07d247f4f74dae2fd2ab1bbf062b2cf09b9c7c --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:02:45,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:02:45,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:02:46,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:02:46,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:02:46,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:02:46,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:02:46,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:02:46,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:02:46,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:02:46,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:02:46,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:02:46,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:02:46,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:02:46,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:02:46,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:02:46,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:02:46,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:02:46,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:02:46,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:02:46,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:02:46,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:02:46,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:02:46,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:02:46,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:02:46,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:02:46,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:02:46,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:02:46,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:02:46,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:02:46,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:02:46,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:02:46,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:02:46,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:02:46,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:02:46,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:02:46,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:02:46,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:02:46,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:02:46,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:02:46,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:02:46,083 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:02:46,110 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:02:46,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:02:46,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:02:46,111 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:02:46,112 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:02:46,112 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:02:46,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:02:46,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:02:46,113 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:02:46,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:02:46,114 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:02:46,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:02:46,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:02:46,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:02:46,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:02:46,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:02:46,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:02:46,130 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:02:46,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:02:46,130 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:02:46,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:02:46,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:02:46,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:02:46,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:02:46,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:02:46,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:02:46,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:02:46,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:02:46,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:02:46,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:02:46,132 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:02:46,132 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:02:46,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:02:46,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:02:46,133 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d1799d95d0e216b78a87282e1c07d247f4f74dae2fd2ab1bbf062b2cf09b9c7c [2021-12-16 02:02:46,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:02:46,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:02:46,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:02:46,409 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:02:46,409 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:02:46,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label48+token_ring.09.cil-1.c [2021-12-16 02:02:46,469 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75aa51624/fc9143e74bd94d5987a022ad096bb986/FLAGe400d405f [2021-12-16 02:02:47,289 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:02:47,290 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.09.cil-1.c [2021-12-16 02:02:47,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75aa51624/fc9143e74bd94d5987a022ad096bb986/FLAGe400d405f [2021-12-16 02:02:47,733 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75aa51624/fc9143e74bd94d5987a022ad096bb986 [2021-12-16 02:02:47,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:02:47,737 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:02:47,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:02:47,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:02:47,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:02:47,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:02:47" (1/1) ... [2021-12-16 02:02:47,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e7b52b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:47, skipping insertion in model container [2021-12-16 02:02:47,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:02:47" (1/1) ... [2021-12-16 02:02:47,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:02:47,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:02:49,420 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.09.cil-1.c[375709,375722] [2021-12-16 02:02:49,447 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.09.cil-1.c[383339,383352] [2021-12-16 02:02:49,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:02:49,658 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:02:50,524 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.09.cil-1.c[375709,375722] [2021-12-16 02:02:50,535 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.09.cil-1.c[383339,383352] [2021-12-16 02:02:50,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:02:50,618 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:02:50,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:50 WrapperNode [2021-12-16 02:02:50,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:02:50,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:02:50,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:02:50,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:02:50,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:50" (1/1) ... [2021-12-16 02:02:50,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:50" (1/1) ... [2021-12-16 02:02:51,059 INFO L137 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13025 [2021-12-16 02:02:51,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:02:51,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:02:51,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:02:51,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:02:51,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:50" (1/1) ... [2021-12-16 02:02:51,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:50" (1/1) ... [2021-12-16 02:02:51,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:50" (1/1) ... [2021-12-16 02:02:51,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:50" (1/1) ... [2021-12-16 02:02:51,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:50" (1/1) ... [2021-12-16 02:02:51,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:50" (1/1) ... [2021-12-16 02:02:51,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:50" (1/1) ... [2021-12-16 02:02:51,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:02:51,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:02:51,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:02:51,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:02:51,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:50" (1/1) ... [2021-12-16 02:02:51,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:02:51,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:02:51,752 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 02:02:51,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 02:02:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:02:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-16 02:02:51,791 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-16 02:02:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-16 02:02:51,791 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-16 02:02:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-16 02:02:51,791 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-16 02:02:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-16 02:02:51,792 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-16 02:02:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-16 02:02:51,792 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-16 02:02:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-16 02:02:51,792 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-16 02:02:51,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:02:51,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:02:51,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:02:51,895 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:02:51,897 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:02:58,022 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:02:58,046 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:02:58,047 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-12-16 02:02:58,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:02:58 BoogieIcfgContainer [2021-12-16 02:02:58,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:02:58,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:02:58,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:02:58,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:02:58,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:02:47" (1/3) ... [2021-12-16 02:02:58,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8fb908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:02:58, skipping insertion in model container [2021-12-16 02:02:58,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:02:50" (2/3) ... [2021-12-16 02:02:58,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8fb908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:02:58, skipping insertion in model container [2021-12-16 02:02:58,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:02:58" (3/3) ... [2021-12-16 02:02:58,061 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.09.cil-1.c [2021-12-16 02:02:58,065 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:02:58,066 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 02:02:58,128 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:02:58,136 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 02:02:58,137 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 02:02:58,201 INFO L276 IsEmpty]: Start isEmpty. Operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-16 02:02:58,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-16 02:02:58,226 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:58,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:58,228 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:58,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:58,233 INFO L85 PathProgramCache]: Analyzing trace with hash -762884387, now seen corresponding path program 1 times [2021-12-16 02:02:58,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:58,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686631271] [2021-12-16 02:02:58,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:58,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:58,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:58,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 02:02:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:58,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 02:02:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:58,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 02:02:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:58,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 02:02:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:58,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:58,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686631271] [2021-12-16 02:02:58,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686631271] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:58,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:58,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 02:02:58,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233589607] [2021-12-16 02:02:58,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:58,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 02:02:58,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:58,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 02:02:58,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 02:02:58,762 INFO L87 Difference]: Start difference. First operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:00,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:03:00,190 INFO L93 Difference]: Finished difference Result 5081 states and 9345 transitions. [2021-12-16 02:03:00,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 02:03:00,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-12-16 02:03:00,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:03:00,229 INFO L225 Difference]: With dead ends: 5081 [2021-12-16 02:03:00,230 INFO L226 Difference]: Without dead ends: 2532 [2021-12-16 02:03:00,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:03:00,246 INFO L933 BasicCegarLoop]: 4545 mSDtfsCounter, 807 mSDsluCounter, 12404 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 16949 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:03:00,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 16949 Invalid, 601 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:03:00,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2021-12-16 02:03:00,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2423. [2021-12-16 02:03:00,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2392 states have (on average 1.8323578595317727) internal successors, (4383), 2394 states have internal predecessors, (4383), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-16 02:03:00,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 4429 transitions. [2021-12-16 02:03:00,394 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 4429 transitions. Word has length 145 [2021-12-16 02:03:00,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:03:00,395 INFO L470 AbstractCegarLoop]: Abstraction has 2423 states and 4429 transitions. [2021-12-16 02:03:00,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:00,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 4429 transitions. [2021-12-16 02:03:00,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-16 02:03:00,405 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:03:00,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:03:00,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:03:00,406 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:03:00,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:03:00,409 INFO L85 PathProgramCache]: Analyzing trace with hash 854556063, now seen corresponding path program 1 times [2021-12-16 02:03:00,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:03:00,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742037324] [2021-12-16 02:03:00,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:03:00,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:03:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:00,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:03:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:00,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 02:03:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:00,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 02:03:00,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:00,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 02:03:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:00,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 02:03:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:00,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:03:00,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:03:00,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742037324] [2021-12-16 02:03:00,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742037324] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:03:00,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:03:00,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:03:00,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673974426] [2021-12-16 02:03:00,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:03:00,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:03:00,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:03:00,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:03:00,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:03:00,682 INFO L87 Difference]: Start difference. First operand 2423 states and 4429 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:02,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:03:02,873 INFO L93 Difference]: Finished difference Result 3223 states and 5716 transitions. [2021-12-16 02:03:02,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 02:03:02,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-12-16 02:03:02,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:03:02,888 INFO L225 Difference]: With dead ends: 3223 [2021-12-16 02:03:02,889 INFO L226 Difference]: Without dead ends: 2938 [2021-12-16 02:03:02,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:03:02,892 INFO L933 BasicCegarLoop]: 4516 mSDtfsCounter, 5165 mSDsluCounter, 12682 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5181 SdHoareTripleChecker+Valid, 17198 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-16 02:03:02,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5181 Valid, 17198 Invalid, 1628 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-16 02:03:02,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2021-12-16 02:03:03,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2721. [2021-12-16 02:03:03,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.8071294559099438) internal successors, (4816), 2668 states have internal predecessors, (4816), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-16 02:03:03,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4901 transitions. [2021-12-16 02:03:03,052 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4901 transitions. Word has length 145 [2021-12-16 02:03:03,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:03:03,052 INFO L470 AbstractCegarLoop]: Abstraction has 2721 states and 4901 transitions. [2021-12-16 02:03:03,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:03,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4901 transitions. [2021-12-16 02:03:03,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-16 02:03:03,055 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:03:03,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:03:03,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:03:03,056 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:03:03,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:03:03,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1697407709, now seen corresponding path program 1 times [2021-12-16 02:03:03,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:03:03,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542349938] [2021-12-16 02:03:03,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:03:03,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:03:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:03,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:03:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:03,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 02:03:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:03,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 02:03:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:03,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 02:03:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:03,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 02:03:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:03,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:03:03,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:03:03,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542349938] [2021-12-16 02:03:03,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542349938] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:03:03,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:03:03,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:03:03,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462463001] [2021-12-16 02:03:03,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:03:03,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:03:03,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:03:03,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:03:03,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:03:03,230 INFO L87 Difference]: Start difference. First operand 2721 states and 4901 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:05,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:03:05,711 INFO L93 Difference]: Finished difference Result 3941 states and 6863 transitions. [2021-12-16 02:03:05,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:03:05,712 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-12-16 02:03:05,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:03:05,727 INFO L225 Difference]: With dead ends: 3941 [2021-12-16 02:03:05,727 INFO L226 Difference]: Without dead ends: 3358 [2021-12-16 02:03:05,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:03:05,731 INFO L933 BasicCegarLoop]: 4749 mSDtfsCounter, 5187 mSDsluCounter, 17378 mSDsCounter, 0 mSdLazyCounter, 2388 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5203 SdHoareTripleChecker+Valid, 22127 SdHoareTripleChecker+Invalid, 2462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-16 02:03:05,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5203 Valid, 22127 Invalid, 2462 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 2388 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-16 02:03:05,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2021-12-16 02:03:05,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 2998. [2021-12-16 02:03:05,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2998 states, 2917 states have (on average 1.7850531367843676) internal successors, (5207), 2921 states have internal predecessors, (5207), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2021-12-16 02:03:05,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2998 states to 2998 states and 5330 transitions. [2021-12-16 02:03:05,821 INFO L78 Accepts]: Start accepts. Automaton has 2998 states and 5330 transitions. Word has length 145 [2021-12-16 02:03:05,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:03:05,822 INFO L470 AbstractCegarLoop]: Abstraction has 2998 states and 5330 transitions. [2021-12-16 02:03:05,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:05,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2998 states and 5330 transitions. [2021-12-16 02:03:05,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-16 02:03:05,824 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:03:05,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:03:05,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 02:03:05,825 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:03:05,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:03:05,825 INFO L85 PathProgramCache]: Analyzing trace with hash -750369823, now seen corresponding path program 1 times [2021-12-16 02:03:05,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:03:05,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649106472] [2021-12-16 02:03:05,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:03:05,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:03:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:05,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:03:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:05,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 02:03:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:05,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 02:03:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:05,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 02:03:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:05,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 02:03:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:05,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:03:05,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:03:05,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649106472] [2021-12-16 02:03:05,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649106472] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:03:05,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:03:05,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:03:05,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58438492] [2021-12-16 02:03:05,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:03:05,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:03:05,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:03:05,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:03:05,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:03:05,960 INFO L87 Difference]: Start difference. First operand 2998 states and 5330 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:08,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:03:08,529 INFO L93 Difference]: Finished difference Result 4998 states and 8540 transitions. [2021-12-16 02:03:08,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:03:08,530 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-12-16 02:03:08,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:03:08,553 INFO L225 Difference]: With dead ends: 4998 [2021-12-16 02:03:08,554 INFO L226 Difference]: Without dead ends: 4138 [2021-12-16 02:03:08,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:03:08,571 INFO L933 BasicCegarLoop]: 4737 mSDtfsCounter, 5181 mSDsluCounter, 17374 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5197 SdHoareTripleChecker+Valid, 22111 SdHoareTripleChecker+Invalid, 2457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-16 02:03:08,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5197 Valid, 22111 Invalid, 2457 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-16 02:03:08,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4138 states. [2021-12-16 02:03:08,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4138 to 3556. [2021-12-16 02:03:08,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3425 states have (on average 1.7506569343065694) internal successors, (5996), 3431 states have internal predecessors, (5996), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-16 02:03:08,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 6199 transitions. [2021-12-16 02:03:08,743 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 6199 transitions. Word has length 145 [2021-12-16 02:03:08,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:03:08,744 INFO L470 AbstractCegarLoop]: Abstraction has 3556 states and 6199 transitions. [2021-12-16 02:03:08,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:08,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 6199 transitions. [2021-12-16 02:03:08,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-16 02:03:08,752 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:03:08,752 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:03:08,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 02:03:08,753 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:03:08,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:03:08,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1494188575, now seen corresponding path program 1 times [2021-12-16 02:03:08,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:03:08,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937862670] [2021-12-16 02:03:08,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:03:08,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:03:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:08,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:03:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:08,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 02:03:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:08,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 02:03:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:08,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 02:03:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:08,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 02:03:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:08,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:03:08,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:03:08,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937862670] [2021-12-16 02:03:08,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937862670] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:03:08,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:03:08,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:03:08,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406056643] [2021-12-16 02:03:08,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:03:08,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:03:08,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:03:08,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:03:08,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:03:08,908 INFO L87 Difference]: Start difference. First operand 3556 states and 6199 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:11,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:03:11,430 INFO L93 Difference]: Finished difference Result 7038 states and 11757 transitions. [2021-12-16 02:03:11,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:03:11,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-12-16 02:03:11,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:03:11,458 INFO L225 Difference]: With dead ends: 7038 [2021-12-16 02:03:11,458 INFO L226 Difference]: Without dead ends: 5620 [2021-12-16 02:03:11,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:03:11,466 INFO L933 BasicCegarLoop]: 4732 mSDtfsCounter, 5180 mSDsluCounter, 17374 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5196 SdHoareTripleChecker+Valid, 22106 SdHoareTripleChecker+Invalid, 2449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-16 02:03:11,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5196 Valid, 22106 Invalid, 2449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-16 02:03:11,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5620 states. [2021-12-16 02:03:11,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5620 to 4673. [2021-12-16 02:03:11,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4673 states, 4442 states have (on average 1.7050877982890589) internal successors, (7574), 4452 states have internal predecessors, (7574), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2021-12-16 02:03:11,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 7943 transitions. [2021-12-16 02:03:11,686 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 7943 transitions. Word has length 145 [2021-12-16 02:03:11,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:03:11,686 INFO L470 AbstractCegarLoop]: Abstraction has 4673 states and 7943 transitions. [2021-12-16 02:03:11,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:11,688 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 7943 transitions. [2021-12-16 02:03:11,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-16 02:03:11,691 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:03:11,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:03:11,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 02:03:11,692 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:03:11,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:03:11,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1982235681, now seen corresponding path program 1 times [2021-12-16 02:03:11,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:03:11,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391812847] [2021-12-16 02:03:11,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:03:11,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:03:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:11,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:03:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:11,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 02:03:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:11,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 02:03:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:11,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 02:03:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:11,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 02:03:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:11,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:03:11,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:03:11,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391812847] [2021-12-16 02:03:11,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391812847] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:03:11,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:03:11,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:03:11,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025468426] [2021-12-16 02:03:11,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:03:11,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:03:11,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:03:11,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:03:11,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:03:11,852 INFO L87 Difference]: Start difference. First operand 4673 states and 7943 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:14,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:03:14,342 INFO L93 Difference]: Finished difference Result 11117 states and 18207 transitions. [2021-12-16 02:03:14,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:03:14,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-12-16 02:03:14,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:03:14,385 INFO L225 Difference]: With dead ends: 11117 [2021-12-16 02:03:14,385 INFO L226 Difference]: Without dead ends: 8582 [2021-12-16 02:03:14,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:03:14,400 INFO L933 BasicCegarLoop]: 4727 mSDtfsCounter, 5179 mSDsluCounter, 17374 mSDsCounter, 0 mSdLazyCounter, 2365 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5195 SdHoareTripleChecker+Valid, 22101 SdHoareTripleChecker+Invalid, 2441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-16 02:03:14,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5195 Valid, 22101 Invalid, 2441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2365 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-16 02:03:14,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8582 states. [2021-12-16 02:03:14,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8582 to 6914. [2021-12-16 02:03:14,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6914 states, 6483 states have (on average 1.6566404442387783) internal successors, (10740), 6501 states have internal predecessors, (10740), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2021-12-16 02:03:14,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6914 states to 6914 states and 11459 transitions. [2021-12-16 02:03:14,699 INFO L78 Accepts]: Start accepts. Automaton has 6914 states and 11459 transitions. Word has length 145 [2021-12-16 02:03:14,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:03:14,701 INFO L470 AbstractCegarLoop]: Abstraction has 6914 states and 11459 transitions. [2021-12-16 02:03:14,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:14,701 INFO L276 IsEmpty]: Start isEmpty. Operand 6914 states and 11459 transitions. [2021-12-16 02:03:14,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-16 02:03:14,706 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:03:14,706 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:03:14,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 02:03:14,707 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:03:14,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:03:14,707 INFO L85 PathProgramCache]: Analyzing trace with hash 889600479, now seen corresponding path program 1 times [2021-12-16 02:03:14,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:03:14,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143494179] [2021-12-16 02:03:14,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:03:14,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:03:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:14,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:03:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:14,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 02:03:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:14,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 02:03:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:14,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 02:03:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:14,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 02:03:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:14,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:03:14,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:03:14,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143494179] [2021-12-16 02:03:14,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143494179] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:03:14,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:03:14,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:03:14,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378814084] [2021-12-16 02:03:14,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:03:14,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:03:14,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:03:14,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:03:14,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:03:14,860 INFO L87 Difference]: Start difference. First operand 6914 states and 11459 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:17,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:03:17,301 INFO L93 Difference]: Finished difference Result 19276 states and 31169 transitions. [2021-12-16 02:03:17,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:03:17,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-12-16 02:03:17,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:03:17,347 INFO L225 Difference]: With dead ends: 19276 [2021-12-16 02:03:17,347 INFO L226 Difference]: Without dead ends: 14500 [2021-12-16 02:03:17,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:03:17,369 INFO L933 BasicCegarLoop]: 4535 mSDtfsCounter, 5256 mSDsluCounter, 16871 mSDsCounter, 0 mSdLazyCounter, 2103 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5272 SdHoareTripleChecker+Valid, 21406 SdHoareTripleChecker+Invalid, 2209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-16 02:03:17,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5272 Valid, 21406 Invalid, 2209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2103 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-16 02:03:17,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14500 states. [2021-12-16 02:03:17,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14500 to 11411. [2021-12-16 02:03:17,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11411 states, 10580 states have (on average 1.6156899810964083) internal successors, (17094), 10614 states have internal predecessors, (17094), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2021-12-16 02:03:17,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11411 states to 11411 states and 18567 transitions. [2021-12-16 02:03:17,809 INFO L78 Accepts]: Start accepts. Automaton has 11411 states and 18567 transitions. Word has length 145 [2021-12-16 02:03:17,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:03:17,809 INFO L470 AbstractCegarLoop]: Abstraction has 11411 states and 18567 transitions. [2021-12-16 02:03:17,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:17,810 INFO L276 IsEmpty]: Start isEmpty. Operand 11411 states and 18567 transitions. [2021-12-16 02:03:17,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-16 02:03:17,817 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:03:17,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:03:17,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 02:03:17,817 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:03:17,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:03:17,818 INFO L85 PathProgramCache]: Analyzing trace with hash -392571807, now seen corresponding path program 1 times [2021-12-16 02:03:17,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:03:17,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603759386] [2021-12-16 02:03:17,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:03:17,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:03:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:17,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:03:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:17,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 02:03:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:17,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 02:03:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:17,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 02:03:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:17,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 02:03:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:17,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:03:17,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:03:17,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603759386] [2021-12-16 02:03:17,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603759386] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:03:17,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:03:17,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:03:17,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001351858] [2021-12-16 02:03:17,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:03:17,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:03:17,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:03:17,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:03:17,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:03:17,949 INFO L87 Difference]: Start difference. First operand 11411 states and 18567 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:19,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:03:19,672 INFO L93 Difference]: Finished difference Result 23942 states and 38818 transitions. [2021-12-16 02:03:19,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:03:19,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-12-16 02:03:19,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:03:19,726 INFO L225 Difference]: With dead ends: 23942 [2021-12-16 02:03:19,726 INFO L226 Difference]: Without dead ends: 14669 [2021-12-16 02:03:19,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:03:19,760 INFO L933 BasicCegarLoop]: 4446 mSDtfsCounter, 4834 mSDsluCounter, 16572 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4851 SdHoareTripleChecker+Valid, 21018 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:03:19,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4851 Valid, 21018 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:03:19,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14669 states. [2021-12-16 02:03:20,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14669 to 11411. [2021-12-16 02:03:20,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11411 states, 10580 states have (on average 1.612570888468809) internal successors, (17061), 10614 states have internal predecessors, (17061), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2021-12-16 02:03:20,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11411 states to 11411 states and 18534 transitions. [2021-12-16 02:03:20,288 INFO L78 Accepts]: Start accepts. Automaton has 11411 states and 18534 transitions. Word has length 145 [2021-12-16 02:03:20,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:03:20,289 INFO L470 AbstractCegarLoop]: Abstraction has 11411 states and 18534 transitions. [2021-12-16 02:03:20,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:20,289 INFO L276 IsEmpty]: Start isEmpty. Operand 11411 states and 18534 transitions. [2021-12-16 02:03:20,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-16 02:03:20,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:03:20,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:03:20,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 02:03:20,299 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:03:20,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:03:20,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2059919775, now seen corresponding path program 1 times [2021-12-16 02:03:20,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:03:20,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987404893] [2021-12-16 02:03:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:03:20,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:03:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:20,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:03:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:20,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 02:03:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:20,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 02:03:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:20,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 02:03:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:20,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 02:03:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:20,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:03:20,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:03:20,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987404893] [2021-12-16 02:03:20,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987404893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:03:20,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:03:20,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:03:20,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259970466] [2021-12-16 02:03:20,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:03:20,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:03:20,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:03:20,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:03:20,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:03:20,431 INFO L87 Difference]: Start difference. First operand 11411 states and 18534 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:22,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:03:22,098 INFO L93 Difference]: Finished difference Result 23908 states and 38651 transitions. [2021-12-16 02:03:22,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:03:22,099 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-12-16 02:03:22,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:03:22,153 INFO L225 Difference]: With dead ends: 23908 [2021-12-16 02:03:22,154 INFO L226 Difference]: Without dead ends: 14635 [2021-12-16 02:03:22,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:03:22,183 INFO L933 BasicCegarLoop]: 4442 mSDtfsCounter, 4832 mSDsluCounter, 16572 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4849 SdHoareTripleChecker+Valid, 21014 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 02:03:22,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4849 Valid, 21014 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 02:03:22,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14635 states. [2021-12-16 02:03:22,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14635 to 11411. [2021-12-16 02:03:22,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11411 states, 10580 states have (on average 1.6094517958412098) internal successors, (17028), 10614 states have internal predecessors, (17028), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2021-12-16 02:03:22,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11411 states to 11411 states and 18501 transitions. [2021-12-16 02:03:22,738 INFO L78 Accepts]: Start accepts. Automaton has 11411 states and 18501 transitions. Word has length 145 [2021-12-16 02:03:22,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:03:22,738 INFO L470 AbstractCegarLoop]: Abstraction has 11411 states and 18501 transitions. [2021-12-16 02:03:22,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:22,739 INFO L276 IsEmpty]: Start isEmpty. Operand 11411 states and 18501 transitions. [2021-12-16 02:03:22,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-16 02:03:22,745 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:03:22,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:03:22,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 02:03:22,746 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:03:22,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:03:22,746 INFO L85 PathProgramCache]: Analyzing trace with hash 337917089, now seen corresponding path program 1 times [2021-12-16 02:03:22,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:03:22,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293713125] [2021-12-16 02:03:22,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:03:22,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:03:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:22,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:03:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:22,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 02:03:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:22,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 02:03:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:22,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 02:03:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:22,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 02:03:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:22,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:03:22,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:03:22,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293713125] [2021-12-16 02:03:22,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293713125] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:03:22,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:03:22,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:03:22,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266788325] [2021-12-16 02:03:22,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:03:22,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:03:22,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:03:22,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:03:22,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:03:22,876 INFO L87 Difference]: Start difference. First operand 11411 states and 18501 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:25,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:03:25,798 INFO L93 Difference]: Finished difference Result 35527 states and 56823 transitions. [2021-12-16 02:03:25,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:03:25,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-12-16 02:03:25,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:03:25,893 INFO L225 Difference]: With dead ends: 35527 [2021-12-16 02:03:25,894 INFO L226 Difference]: Without dead ends: 26254 [2021-12-16 02:03:25,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:03:25,927 INFO L933 BasicCegarLoop]: 4703 mSDtfsCounter, 5166 mSDsluCounter, 17374 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5182 SdHoareTripleChecker+Valid, 22077 SdHoareTripleChecker+Invalid, 2387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-16 02:03:25,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5182 Valid, 22077 Invalid, 2387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-16 02:03:25,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26254 states. [2021-12-16 02:03:26,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26254 to 20502. [2021-12-16 02:03:26,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20502 states, 18871 states have (on average 1.5784007206825288) internal successors, (29786), 18937 states have internal predecessors, (29786), 1175 states have call successors, (1175), 390 states have call predecessors, (1175), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2021-12-16 02:03:27,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20502 states to 20502 states and 32929 transitions. [2021-12-16 02:03:27,021 INFO L78 Accepts]: Start accepts. Automaton has 20502 states and 32929 transitions. Word has length 145 [2021-12-16 02:03:27,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:03:27,022 INFO L470 AbstractCegarLoop]: Abstraction has 20502 states and 32929 transitions. [2021-12-16 02:03:27,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:27,022 INFO L276 IsEmpty]: Start isEmpty. Operand 20502 states and 32929 transitions. [2021-12-16 02:03:27,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-16 02:03:27,035 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:03:27,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:03:27,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 02:03:27,035 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:03:27,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:03:27,036 INFO L85 PathProgramCache]: Analyzing trace with hash 5273951, now seen corresponding path program 1 times [2021-12-16 02:03:27,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:03:27,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350276062] [2021-12-16 02:03:27,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:03:27,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:03:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:27,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:03:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:27,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 02:03:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:27,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 02:03:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:27,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 02:03:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:27,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 02:03:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:27,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:03:27,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:03:27,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350276062] [2021-12-16 02:03:27,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350276062] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:03:27,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:03:27,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:03:27,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26584199] [2021-12-16 02:03:27,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:03:27,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:03:27,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:03:27,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:03:27,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:03:27,165 INFO L87 Difference]: Start difference. First operand 20502 states and 32929 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:32,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:03:32,554 INFO L93 Difference]: Finished difference Result 75974 states and 121247 transitions. [2021-12-16 02:03:32,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 02:03:32,555 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-12-16 02:03:32,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:03:32,801 INFO L225 Difference]: With dead ends: 75974 [2021-12-16 02:03:32,801 INFO L226 Difference]: Without dead ends: 57610 [2021-12-16 02:03:32,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 02:03:32,874 INFO L933 BasicCegarLoop]: 4831 mSDtfsCounter, 5243 mSDsluCounter, 17363 mSDsCounter, 0 mSdLazyCounter, 2696 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5258 SdHoareTripleChecker+Valid, 22194 SdHoareTripleChecker+Invalid, 2777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:03:32,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5258 Valid, 22194 Invalid, 2777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2696 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-16 02:03:32,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57610 states. [2021-12-16 02:03:34,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57610 to 38296. [2021-12-16 02:03:34,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38296 states, 35129 states have (on average 1.5621850892425062) internal successors, (54878), 35259 states have internal predecessors, (54878), 2263 states have call successors, (2263), 774 states have call predecessors, (2263), 902 states have return successors, (4578), 2390 states have call predecessors, (4578), 2263 states have call successors, (4578) [2021-12-16 02:03:35,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38296 states to 38296 states and 61719 transitions. [2021-12-16 02:03:35,222 INFO L78 Accepts]: Start accepts. Automaton has 38296 states and 61719 transitions. Word has length 145 [2021-12-16 02:03:35,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:03:35,222 INFO L470 AbstractCegarLoop]: Abstraction has 38296 states and 61719 transitions. [2021-12-16 02:03:35,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:03:35,223 INFO L276 IsEmpty]: Start isEmpty. Operand 38296 states and 61719 transitions. [2021-12-16 02:03:35,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-16 02:03:35,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:03:35,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:03:35,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 02:03:35,244 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:03:35,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:03:35,244 INFO L85 PathProgramCache]: Analyzing trace with hash 2007160221, now seen corresponding path program 1 times [2021-12-16 02:03:35,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:03:35,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049695834] [2021-12-16 02:03:35,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:03:35,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:03:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:35,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:03:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:35,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 02:03:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:35,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 02:03:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:35,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 02:03:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:35,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 02:03:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:03:35,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:03:35,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:03:35,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049695834] [2021-12-16 02:03:35,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049695834] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:03:35,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:03:35,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:03:35,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823185862] [2021-12-16 02:03:35,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:03:35,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:03:35,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:03:35,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:03:35,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:03:35,356 INFO L87 Difference]: Start difference. First operand 38296 states and 61719 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)