./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 463dbca1530ea0e57c159e9405d50f794488f63283b3e27908f44b92b1921358 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 19:45:05,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 19:45:05,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 19:45:06,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 19:45:06,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 19:45:06,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 19:45:06,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 19:45:06,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 19:45:06,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 19:45:06,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 19:45:06,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 19:45:06,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 19:45:06,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 19:45:06,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 19:45:06,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 19:45:06,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 19:45:06,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 19:45:06,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 19:45:06,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 19:45:06,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 19:45:06,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 19:45:06,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 19:45:06,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 19:45:06,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 19:45:06,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 19:45:06,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 19:45:06,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 19:45:06,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 19:45:06,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 19:45:06,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 19:45:06,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 19:45:06,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 19:45:06,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 19:45:06,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 19:45:06,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 19:45:06,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 19:45:06,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 19:45:06,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 19:45:06,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 19:45:06,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 19:45:06,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 19:45:06,047 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 19:45:06,070 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 19:45:06,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 19:45:06,071 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 19:45:06,071 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 19:45:06,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 19:45:06,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 19:45:06,072 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 19:45:06,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 19:45:06,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 19:45:06,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 19:45:06,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 19:45:06,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 19:45:06,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 19:45:06,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 19:45:06,074 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 19:45:06,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 19:45:06,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 19:45:06,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 19:45:06,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 19:45:06,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 19:45:06,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 19:45:06,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 19:45:06,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 19:45:06,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 19:45:06,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 19:45:06,076 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 19:45:06,076 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 19:45:06,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 19:45:06,077 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 19:45:06,077 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 463dbca1530ea0e57c159e9405d50f794488f63283b3e27908f44b92b1921358 [2021-11-07 19:45:06,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 19:45:06,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 19:45:06,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 19:45:06,321 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 19:45:06,322 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 19:45:06,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2021-11-07 19:45:06,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c85127a1b/ea68c044024240eb9d6f531432d62110/FLAG1fc7c7f22 [2021-11-07 19:45:07,020 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 19:45:07,021 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2021-11-07 19:45:07,067 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c85127a1b/ea68c044024240eb9d6f531432d62110/FLAG1fc7c7f22 [2021-11-07 19:45:07,116 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c85127a1b/ea68c044024240eb9d6f531432d62110 [2021-11-07 19:45:07,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 19:45:07,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 19:45:07,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 19:45:07,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 19:45:07,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 19:45:07,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:45:07" (1/1) ... [2021-11-07 19:45:07,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@440f652a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:07, skipping insertion in model container [2021-11-07 19:45:07,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:45:07" (1/1) ... [2021-11-07 19:45:07,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 19:45:07,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 19:45:10,001 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487146,487159] [2021-11-07 19:45:10,003 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487315,487328] [2021-11-07 19:45:10,003 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487482,487495] [2021-11-07 19:45:10,010 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487650,487663] [2021-11-07 19:45:10,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 19:45:10,064 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 19:45:10,380 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487146,487159] [2021-11-07 19:45:10,381 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487315,487328] [2021-11-07 19:45:10,381 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487482,487495] [2021-11-07 19:45:10,381 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487650,487663] [2021-11-07 19:45:10,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 19:45:10,587 INFO L208 MainTranslator]: Completed translation [2021-11-07 19:45:10,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:10 WrapperNode [2021-11-07 19:45:10,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 19:45:10,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 19:45:10,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 19:45:10,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 19:45:10,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:10" (1/1) ... [2021-11-07 19:45:10,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:10" (1/1) ... [2021-11-07 19:45:13,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 19:45:13,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 19:45:13,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 19:45:13,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 19:45:13,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:10" (1/1) ... [2021-11-07 19:45:13,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:10" (1/1) ... [2021-11-07 19:45:13,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:10" (1/1) ... [2021-11-07 19:45:13,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:10" (1/1) ... [2021-11-07 19:45:14,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:10" (1/1) ... [2021-11-07 19:45:14,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:10" (1/1) ... [2021-11-07 19:45:15,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:10" (1/1) ... [2021-11-07 19:45:15,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 19:45:15,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 19:45:15,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 19:45:15,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 19:45:15,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:10" (1/1) ... [2021-11-07 19:45:15,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 19:45:15,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 19:45:15,716 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) [2021-11-07 19:45:15,751 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 [2021-11-07 19:45:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_121 [2021-11-07 19:45:15,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_121 [2021-11-07 19:45:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_3 [2021-11-07 19:45:15,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_3 [2021-11-07 19:45:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_147 [2021-11-07 19:45:15,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_147 [2021-11-07 19:45:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 19:45:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 19:45:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 19:45:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 19:45:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_3_2 [2021-11-07 19:45:15,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_3_2 [2021-11-07 19:45:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 19:45:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-07 19:45:15,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-07 19:45:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 19:45:15,769 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 19:45:15,769 INFO L130 BoogieDeclarations]: Found specification of procedure cas_link_timer [2021-11-07 19:45:15,769 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_link_timer [2021-11-07 19:45:15,769 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-11-07 19:45:15,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-11-07 19:45:15,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 19:45:15,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 19:45:15,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 19:45:15,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 19:45:15,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 19:45:15,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 19:45:15,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_8_2 [2021-11-07 19:45:15,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_8_2 [2021-11-07 19:45:15,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 19:45:15,770 INFO L130 BoogieDeclarations]: Found specification of procedure cas_post_rxds_ringN [2021-11-07 19:45:15,770 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_post_rxds_ringN [2021-11-07 19:45:15,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 19:45:15,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 19:50:28,878 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_entry_EMGentry_14_returnLabel: main_#res := 0; [2021-11-07 19:50:28,879 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 19:50:28,881 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint L14685: #t~ret2304 := main_#res; [2021-11-07 19:50:28,883 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_pci_pci_instance_2_switch_break: call ULTIMATE.dealloc(ldv_pci_pci_instance_2_~#ldv_2_resource_pm_message~0.base, ldv_pci_pci_instance_2_~#ldv_2_resource_pm_message~0.offset);havoc ldv_pci_pci_instance_2_~#ldv_2_resource_pm_message~0.base, ldv_pci_pci_instance_2_~#ldv_2_resource_pm_message~0.offset; [2021-11-07 19:50:28,973 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 19:50:28,973 INFO L299 CfgBuilder]: Removed 27494 assume(true) statements. [2021-11-07 19:50:29,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:50:29 BoogieIcfgContainer [2021-11-07 19:50:29,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 19:50:29,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 19:50:29,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 19:50:29,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 19:50:29,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:45:07" (1/3) ... [2021-11-07 19:50:29,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce457fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:50:29, skipping insertion in model container [2021-11-07 19:50:29,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:45:10" (2/3) ... [2021-11-07 19:50:29,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce457fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:50:29, skipping insertion in model container [2021-11-07 19:50:29,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:50:29" (3/3) ... [2021-11-07 19:50:29,109 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2021-11-07 19:50:29,112 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 19:50:29,112 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 718 error locations. [2021-11-07 19:50:29,207 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 19:50:29,214 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 [2021-11-07 19:50:29,215 INFO L340 AbstractCegarLoop]: Starting to check reachability of 718 error locations. [2021-11-07 19:50:29,439 INFO L276 IsEmpty]: Start isEmpty. Operand has 24991 states, 24222 states have (on average 1.3423747006853275) internal successors, (32515), 24939 states have internal predecessors, (32515), 42 states have call successors, (42), 9 states have call predecessors, (42), 9 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-11-07 19:50:29,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 19:50:29,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:50:29,443 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] [2021-11-07 19:50:29,443 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr658ASSERT_VIOLATIONERROR_FUNCTION === [cas_link_timerErr0ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr1ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr2ASSERT_VIOLATIONERROR_FUNCTION (and 715 more)] === [2021-11-07 19:50:29,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:50:29,447 INFO L85 PathProgramCache]: Analyzing trace with hash -531829004, now seen corresponding path program 1 times [2021-11-07 19:50:29,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:50:29,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125072207] [2021-11-07 19:50:29,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:50:29,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:50:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:50:30,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:50:30,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:50:30,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125072207] [2021-11-07 19:50:30,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125072207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:50:30,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:50:30,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:50:30,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876621453] [2021-11-07 19:50:30,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:50:30,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 19:50:30,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:50:30,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 19:50:30,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 19:50:30,162 INFO L87 Difference]: Start difference. First operand has 24991 states, 24222 states have (on average 1.3423747006853275) internal successors, (32515), 24939 states have internal predecessors, (32515), 42 states have call successors, (42), 9 states have call predecessors, (42), 9 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:50:32,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:50:32,015 INFO L93 Difference]: Finished difference Result 61576 states and 80366 transitions. [2021-11-07 19:50:32,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 19:50:32,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-07 19:50:32,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:50:32,373 INFO L225 Difference]: With dead ends: 61576 [2021-11-07 19:50:32,373 INFO L226 Difference]: Without dead ends: 35358 [2021-11-07 19:50:32,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.08ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 19:50:32,427 INFO L933 BasicCegarLoop]: 31145 mSDtfsCounter, 29871 mSDsluCounter, 46960 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 581.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29871 SdHoareTripleChecker+Valid, 78105 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 134.72ms SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 715.37ms IncrementalHoareTripleChecker+Time [2021-11-07 19:50:32,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29871 Valid, 78105 Invalid, 836 Unknown, 0 Unchecked, 134.72ms Time], IncrementalHoareTripleChecker [146 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 715.37ms Time] [2021-11-07 19:50:32,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35358 states. [2021-11-07 19:50:32,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35358 to 30423. [2021-11-07 19:50:32,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30423 states, 29621 states have (on average 1.2745011984740555) internal successors, (37752), 30320 states have internal predecessors, (37752), 66 states have call successors, (66), 18 states have call predecessors, (66), 18 states have return successors, (132), 84 states have call predecessors, (132), 66 states have call successors, (132) [2021-11-07 19:50:33,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30423 states to 30423 states and 37950 transitions. [2021-11-07 19:50:33,277 INFO L78 Accepts]: Start accepts. Automaton has 30423 states and 37950 transitions. Word has length 24 [2021-11-07 19:50:33,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:50:33,278 INFO L470 AbstractCegarLoop]: Abstraction has 30423 states and 37950 transitions. [2021-11-07 19:50:33,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:50:33,278 INFO L276 IsEmpty]: Start isEmpty. Operand 30423 states and 37950 transitions. [2021-11-07 19:50:33,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 19:50:33,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:50:33,279 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] [2021-11-07 19:50:33,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 19:50:33,280 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr659ASSERT_VIOLATIONERROR_FUNCTION === [cas_link_timerErr0ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr1ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr2ASSERT_VIOLATIONERROR_FUNCTION (and 715 more)] === [2021-11-07 19:50:33,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:50:33,280 INFO L85 PathProgramCache]: Analyzing trace with hash 15956375, now seen corresponding path program 1 times [2021-11-07 19:50:33,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:50:33,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229121087] [2021-11-07 19:50:33,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:50:33,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:50:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:50:33,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:50:33,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:50:33,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229121087] [2021-11-07 19:50:33,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229121087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:50:33,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:50:33,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:50:33,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384914434] [2021-11-07 19:50:33,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:50:33,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 19:50:33,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:50:33,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 19:50:33,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 19:50:33,548 INFO L87 Difference]: Start difference. First operand 30423 states and 37950 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:50:34,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:50:34,144 INFO L93 Difference]: Finished difference Result 30423 states and 37950 transitions. [2021-11-07 19:50:34,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 19:50:34,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-07 19:50:34,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:50:34,203 INFO L225 Difference]: With dead ends: 30423 [2021-11-07 19:50:34,203 INFO L226 Difference]: Without dead ends: 30419 [2021-11-07 19:50:34,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.06ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 19:50:34,217 INFO L933 BasicCegarLoop]: 29172 mSDtfsCounter, 29153 mSDsluCounter, 29066 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29153 SdHoareTripleChecker+Valid, 58238 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.38ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 106.90ms IncrementalHoareTripleChecker+Time [2021-11-07 19:50:34,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29153 Valid, 58238 Invalid, 114 Unknown, 0 Unchecked, 49.38ms Time], IncrementalHoareTripleChecker [38 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 106.90ms Time] [2021-11-07 19:50:34,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30419 states. [2021-11-07 19:50:34,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30419 to 30419. [2021-11-07 19:50:34,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30419 states, 29619 states have (on average 1.2744522097302406) internal successors, (37748), 30316 states have internal predecessors, (37748), 66 states have call successors, (66), 18 states have call predecessors, (66), 18 states have return successors, (132), 84 states have call predecessors, (132), 66 states have call successors, (132) [2021-11-07 19:50:34,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30419 states to 30419 states and 37946 transitions. [2021-11-07 19:50:34,875 INFO L78 Accepts]: Start accepts. Automaton has 30419 states and 37946 transitions. Word has length 26 [2021-11-07 19:50:34,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:50:34,875 INFO L470 AbstractCegarLoop]: Abstraction has 30419 states and 37946 transitions. [2021-11-07 19:50:34,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:50:34,876 INFO L276 IsEmpty]: Start isEmpty. Operand 30419 states and 37946 transitions. [2021-11-07 19:50:34,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 19:50:34,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:50:34,877 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] [2021-11-07 19:50:34,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 19:50:34,877 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr660ASSERT_VIOLATIONERROR_FUNCTION === [cas_link_timerErr0ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr1ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr2ASSERT_VIOLATIONERROR_FUNCTION (and 715 more)] === [2021-11-07 19:50:34,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:50:34,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1843271494, now seen corresponding path program 1 times [2021-11-07 19:50:34,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:50:34,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999155011] [2021-11-07 19:50:34,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:50:34,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:50:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:50:35,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:50:35,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:50:35,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999155011] [2021-11-07 19:50:35,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999155011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:50:35,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:50:35,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:50:35,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736265952] [2021-11-07 19:50:35,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:50:35,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 19:50:35,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:50:35,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 19:50:35,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 19:50:35,195 INFO L87 Difference]: Start difference. First operand 30419 states and 37946 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:50:35,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:50:35,919 INFO L93 Difference]: Finished difference Result 30419 states and 37946 transitions. [2021-11-07 19:50:35,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 19:50:35,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-07 19:50:35,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:50:35,974 INFO L225 Difference]: With dead ends: 30419 [2021-11-07 19:50:35,975 INFO L226 Difference]: Without dead ends: 30415 [2021-11-07 19:50:35,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.35ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 19:50:35,992 INFO L933 BasicCegarLoop]: 29168 mSDtfsCounter, 29147 mSDsluCounter, 29064 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29147 SdHoareTripleChecker+Valid, 58232 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.77ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.19ms IncrementalHoareTripleChecker+Time [2021-11-07 19:50:35,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29147 Valid, 58232 Invalid, 112 Unknown, 0 Unchecked, 43.77ms Time], IncrementalHoareTripleChecker [38 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 77.19ms Time] [2021-11-07 19:50:36,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30415 states. [2021-11-07 19:50:36,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30415 to 30415. [2021-11-07 19:50:36,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30415 states, 29617 states have (on average 1.2744032143701252) internal successors, (37744), 30312 states have internal predecessors, (37744), 66 states have call successors, (66), 18 states have call predecessors, (66), 18 states have return successors, (132), 84 states have call predecessors, (132), 66 states have call successors, (132) [2021-11-07 19:50:36,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30415 states to 30415 states and 37942 transitions. [2021-11-07 19:50:36,637 INFO L78 Accepts]: Start accepts. Automaton has 30415 states and 37942 transitions. Word has length 28 [2021-11-07 19:50:36,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:50:36,638 INFO L470 AbstractCegarLoop]: Abstraction has 30415 states and 37942 transitions. [2021-11-07 19:50:36,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:50:36,638 INFO L276 IsEmpty]: Start isEmpty. Operand 30415 states and 37942 transitions. [2021-11-07 19:50:36,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 19:50:36,639 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:50:36,639 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] [2021-11-07 19:50:36,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 19:50:36,640 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr661ASSERT_VIOLATIONERROR_FUNCTION === [cas_link_timerErr0ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr1ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr2ASSERT_VIOLATIONERROR_FUNCTION (and 715 more)] === [2021-11-07 19:50:36,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:50:36,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1854858147, now seen corresponding path program 1 times [2021-11-07 19:50:36,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:50:36,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267882962] [2021-11-07 19:50:36,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:50:36,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:50:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:50:36,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:50:36,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:50:36,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267882962] [2021-11-07 19:50:36,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267882962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:50:36,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:50:36,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:50:36,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314892586] [2021-11-07 19:50:36,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:50:36,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 19:50:36,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:50:36,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 19:50:36,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 19:50:36,917 INFO L87 Difference]: Start difference. First operand 30415 states and 37942 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:50:37,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:50:37,530 INFO L93 Difference]: Finished difference Result 30415 states and 37942 transitions. [2021-11-07 19:50:37,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 19:50:37,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-07 19:50:37,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:50:37,586 INFO L225 Difference]: With dead ends: 30415 [2021-11-07 19:50:37,586 INFO L226 Difference]: Without dead ends: 30411 [2021-11-07 19:50:37,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.44ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 19:50:37,606 INFO L933 BasicCegarLoop]: 29164 mSDtfsCounter, 29141 mSDsluCounter, 29062 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29141 SdHoareTripleChecker+Valid, 58226 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.92ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.39ms IncrementalHoareTripleChecker+Time [2021-11-07 19:50:37,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29141 Valid, 58226 Invalid, 110 Unknown, 0 Unchecked, 46.92ms Time], IncrementalHoareTripleChecker [38 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 74.39ms Time] [2021-11-07 19:50:37,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30411 states. [2021-11-07 19:50:38,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30411 to 30411. [2021-11-07 19:50:38,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30411 states, 29615 states have (on average 1.2743542123923688) internal successors, (37740), 30308 states have internal predecessors, (37740), 66 states have call successors, (66), 18 states have call predecessors, (66), 18 states have return successors, (132), 84 states have call predecessors, (132), 66 states have call successors, (132) [2021-11-07 19:50:38,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30411 states to 30411 states and 37938 transitions. [2021-11-07 19:50:38,320 INFO L78 Accepts]: Start accepts. Automaton has 30411 states and 37938 transitions. Word has length 30 [2021-11-07 19:50:38,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:50:38,321 INFO L470 AbstractCegarLoop]: Abstraction has 30411 states and 37938 transitions. [2021-11-07 19:50:38,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:50:38,321 INFO L276 IsEmpty]: Start isEmpty. Operand 30411 states and 37938 transitions. [2021-11-07 19:50:38,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-07 19:50:38,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:50:38,325 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] [2021-11-07 19:50:38,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 19:50:38,326 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr662ASSERT_VIOLATIONERROR_FUNCTION === [cas_link_timerErr0ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr1ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr2ASSERT_VIOLATIONERROR_FUNCTION (and 715 more)] === [2021-11-07 19:50:38,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:50:38,326 INFO L85 PathProgramCache]: Analyzing trace with hash -104729472, now seen corresponding path program 1 times [2021-11-07 19:50:38,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:50:38,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359979095] [2021-11-07 19:50:38,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:50:38,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:50:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:50:38,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:50:38,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:50:38,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359979095] [2021-11-07 19:50:38,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359979095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:50:38,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:50:38,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:50:38,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940765778] [2021-11-07 19:50:38,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:50:38,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 19:50:38,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:50:38,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 19:50:38,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 19:50:38,681 INFO L87 Difference]: Start difference. First operand 30411 states and 37938 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:50:39,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:50:39,395 INFO L93 Difference]: Finished difference Result 30411 states and 37938 transitions. [2021-11-07 19:50:39,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 19:50:39,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-07 19:50:39,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:50:39,453 INFO L225 Difference]: With dead ends: 30411 [2021-11-07 19:50:39,453 INFO L226 Difference]: Without dead ends: 30407 [2021-11-07 19:50:39,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.53ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 19:50:39,469 INFO L933 BasicCegarLoop]: 29160 mSDtfsCounter, 29135 mSDsluCounter, 29060 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29135 SdHoareTripleChecker+Valid, 58220 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.41ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92.93ms IncrementalHoareTripleChecker+Time [2021-11-07 19:50:39,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29135 Valid, 58220 Invalid, 108 Unknown, 0 Unchecked, 47.41ms Time], IncrementalHoareTripleChecker [38 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 92.93ms Time] [2021-11-07 19:50:39,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30407 states. [2021-11-07 19:50:40,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30407 to 30407. [2021-11-07 19:50:40,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30407 states, 29613 states have (on average 1.2743052037956304) internal successors, (37736), 30304 states have internal predecessors, (37736), 66 states have call successors, (66), 18 states have call predecessors, (66), 18 states have return successors, (132), 84 states have call predecessors, (132), 66 states have call successors, (132) [2021-11-07 19:50:40,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30407 states to 30407 states and 37934 transitions. [2021-11-07 19:50:40,240 INFO L78 Accepts]: Start accepts. Automaton has 30407 states and 37934 transitions. Word has length 32 [2021-11-07 19:50:40,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:50:40,240 INFO L470 AbstractCegarLoop]: Abstraction has 30407 states and 37934 transitions. [2021-11-07 19:50:40,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:50:40,241 INFO L276 IsEmpty]: Start isEmpty. Operand 30407 states and 37934 transitions. [2021-11-07 19:50:40,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 19:50:40,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:50:40,241 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] [2021-11-07 19:50:40,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 19:50:40,242 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr663ASSERT_VIOLATIONERROR_FUNCTION === [cas_link_timerErr0ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr1ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr2ASSERT_VIOLATIONERROR_FUNCTION (and 715 more)] === [2021-11-07 19:50:40,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:50:40,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1858252509, now seen corresponding path program 1 times [2021-11-07 19:50:40,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:50:40,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282370797] [2021-11-07 19:50:40,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:50:40,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:50:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:50:40,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:50:40,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:50:40,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282370797] [2021-11-07 19:50:40,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282370797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:50:40,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:50:40,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:50:40,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379220303] [2021-11-07 19:50:40,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:50:40,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 19:50:40,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:50:40,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 19:50:40,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 19:50:40,636 INFO L87 Difference]: Start difference. First operand 30407 states and 37934 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:50:41,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:50:41,322 INFO L93 Difference]: Finished difference Result 30407 states and 37934 transitions. [2021-11-07 19:50:41,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 19:50:41,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-07 19:50:41,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:50:41,377 INFO L225 Difference]: With dead ends: 30407 [2021-11-07 19:50:41,378 INFO L226 Difference]: Without dead ends: 30403 [2021-11-07 19:50:41,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.09ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 19:50:41,395 INFO L933 BasicCegarLoop]: 29156 mSDtfsCounter, 29129 mSDsluCounter, 29058 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29129 SdHoareTripleChecker+Valid, 58214 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.64ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 101.56ms IncrementalHoareTripleChecker+Time [2021-11-07 19:50:41,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29129 Valid, 58214 Invalid, 106 Unknown, 0 Unchecked, 41.64ms Time], IncrementalHoareTripleChecker [38 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 101.56ms Time] [2021-11-07 19:50:41,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30403 states. [2021-11-07 19:50:42,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30403 to 30403. [2021-11-07 19:50:42,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30403 states, 29611 states have (on average 1.2742561885785688) internal successors, (37732), 30300 states have internal predecessors, (37732), 66 states have call successors, (66), 18 states have call predecessors, (66), 18 states have return successors, (132), 84 states have call predecessors, (132), 66 states have call successors, (132) [2021-11-07 19:50:42,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30403 states to 30403 states and 37930 transitions. [2021-11-07 19:50:42,287 INFO L78 Accepts]: Start accepts. Automaton has 30403 states and 37930 transitions. Word has length 34 [2021-11-07 19:50:42,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:50:42,385 INFO L470 AbstractCegarLoop]: Abstraction has 30403 states and 37930 transitions. [2021-11-07 19:50:42,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:50:42,385 INFO L276 IsEmpty]: Start isEmpty. Operand 30403 states and 37930 transitions. [2021-11-07 19:50:42,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 19:50:42,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:50:42,385 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] [2021-11-07 19:50:42,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 19:50:42,386 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr664ASSERT_VIOLATIONERROR_FUNCTION === [cas_link_timerErr0ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr1ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr2ASSERT_VIOLATIONERROR_FUNCTION (and 715 more)] === [2021-11-07 19:50:42,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:50:42,390 INFO L85 PathProgramCache]: Analyzing trace with hash 928256582, now seen corresponding path program 1 times [2021-11-07 19:50:42,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:50:42,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639908129] [2021-11-07 19:50:42,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:50:42,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:50:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:50:42,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:50:42,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:50:42,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639908129] [2021-11-07 19:50:42,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639908129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:50:42,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:50:42,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:50:42,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111938741] [2021-11-07 19:50:42,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:50:42,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 19:50:42,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:50:42,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 19:50:42,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 19:50:42,610 INFO L87 Difference]: Start difference. First operand 30403 states and 37930 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:50:43,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:50:43,316 INFO L93 Difference]: Finished difference Result 30403 states and 37930 transitions. [2021-11-07 19:50:43,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 19:50:43,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-07 19:50:43,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:50:43,422 INFO L225 Difference]: With dead ends: 30403 [2021-11-07 19:50:43,422 INFO L226 Difference]: Without dead ends: 30399 [2021-11-07 19:50:43,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.68ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 19:50:43,451 INFO L933 BasicCegarLoop]: 29152 mSDtfsCounter, 29123 mSDsluCounter, 29056 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29123 SdHoareTripleChecker+Valid, 58208 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.84ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 90.23ms IncrementalHoareTripleChecker+Time [2021-11-07 19:50:43,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29123 Valid, 58208 Invalid, 104 Unknown, 0 Unchecked, 44.84ms Time], IncrementalHoareTripleChecker [38 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 90.23ms Time] [2021-11-07 19:50:43,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30399 states. [2021-11-07 19:50:44,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30399 to 30399. [2021-11-07 19:50:44,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30399 states, 29609 states have (on average 1.2742071667398427) internal successors, (37728), 30296 states have internal predecessors, (37728), 66 states have call successors, (66), 18 states have call predecessors, (66), 18 states have return successors, (132), 84 states have call predecessors, (132), 66 states have call successors, (132) [2021-11-07 19:50:44,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30399 states to 30399 states and 37926 transitions. [2021-11-07 19:50:44,236 INFO L78 Accepts]: Start accepts. Automaton has 30399 states and 37926 transitions. Word has length 36 [2021-11-07 19:50:44,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:50:44,237 INFO L470 AbstractCegarLoop]: Abstraction has 30399 states and 37926 transitions. [2021-11-07 19:50:44,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 19:50:44,237 INFO L276 IsEmpty]: Start isEmpty. Operand 30399 states and 37926 transitions. [2021-11-07 19:50:44,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 19:50:44,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:50:44,238 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] [2021-11-07 19:50:44,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 19:50:44,238 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr665ASSERT_VIOLATIONERROR_FUNCTION === [cas_link_timerErr0ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr1ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr2ASSERT_VIOLATIONERROR_FUNCTION (and 715 more)] === [2021-11-07 19:50:44,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:50:44,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1296099351, now seen corresponding path program 1 times [2021-11-07 19:50:44,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:50:44,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862964124] [2021-11-07 19:50:44,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:50:44,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:50:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:50:44,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:50:44,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:50:44,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862964124] [2021-11-07 19:50:44,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862964124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:50:44,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:50:44,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:50:44,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456360488] [2021-11-07 19:50:44,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:50:44,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 19:50:44,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:50:44,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 19:50:44,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 19:50:44,619 INFO L87 Difference]: Start difference. First operand 30399 states and 37926 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)