./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe33b021-8441-4883-a3fe-c0711e56709b/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe33b021-8441-4883-a3fe-c0711e56709b/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe33b021-8441-4883-a3fe-c0711e56709b/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe33b021-8441-4883-a3fe-c0711e56709b/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe33b021-8441-4883-a3fe-c0711e56709b/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe33b021-8441-4883-a3fe-c0711e56709b/bin/uautomizer-AkOaLMaTGY --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 2d96d66163c8e8d61a2fa90f8dc8359a87f83533e82cd74c25a40ad0f5e1f460 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:19:01,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:19:01,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:19:01,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:19:01,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:19:01,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:19:01,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:19:01,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:19:01,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:19:01,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:19:01,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:19:01,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:19:01,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:19:01,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:19:01,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:19:01,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:19:01,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:19:01,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:19:01,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:19:01,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:19:01,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:19:01,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:19:01,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:19:01,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:19:01,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:19:01,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:19:01,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:19:01,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:19:01,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:19:01,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:19:01,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:19:01,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:19:01,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:19:01,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:19:01,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:19:01,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:19:01,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:19:01,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:19:01,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:19:01,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:19:01,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:19:01,227 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe33b021-8441-4883-a3fe-c0711e56709b/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 08:19:01,258 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:19:01,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:19:01,259 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:19:01,259 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:19:01,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:19:01,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:19:01,261 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:19:01,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:19:01,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:19:01,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:19:01,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:19:01,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:19:01,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:19:01,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:19:01,264 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:19:01,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:19:01,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:19:01,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:19:01,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:19:01,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:19:01,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:19:01,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:19:01,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:19:01,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:19:01,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:19:01,268 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:19:01,269 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:19:01,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:19:01,269 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:19:01,270 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe33b021-8441-4883-a3fe-c0711e56709b/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe33b021-8441-4883-a3fe-c0711e56709b/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d96d66163c8e8d61a2fa90f8dc8359a87f83533e82cd74c25a40ad0f5e1f460 [2021-11-07 08:19:01,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:19:01,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:19:01,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:19:01,603 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:19:01,605 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:19:01,607 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe33b021-8441-4883-a3fe-c0711e56709b/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i [2021-11-07 08:19:01,714 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe33b021-8441-4883-a3fe-c0711e56709b/bin/uautomizer-AkOaLMaTGY/data/4d2c08e7b/716302ed4d4a45aaad9af7af17887f27/FLAGd4c78a9cc [2021-11-07 08:19:02,804 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:19:02,805 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe33b021-8441-4883-a3fe-c0711e56709b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i [2021-11-07 08:19:02,860 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe33b021-8441-4883-a3fe-c0711e56709b/bin/uautomizer-AkOaLMaTGY/data/4d2c08e7b/716302ed4d4a45aaad9af7af17887f27/FLAGd4c78a9cc [2021-11-07 08:19:03,091 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe33b021-8441-4883-a3fe-c0711e56709b/bin/uautomizer-AkOaLMaTGY/data/4d2c08e7b/716302ed4d4a45aaad9af7af17887f27 [2021-11-07 08:19:03,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:19:03,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:19:03,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:19:03,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:19:03,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:19:03,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:19:03" (1/1) ... [2021-11-07 08:19:03,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e5c71eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:03, skipping insertion in model container [2021-11-07 08:19:03,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:19:03" (1/1) ... [2021-11-07 08:19:03,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:19:03,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:19:06,143 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe33b021-8441-4883-a3fe-c0711e56709b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i[282309,282322] [2021-11-07 08:19:06,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:19:06,253 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:19:06,741 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe33b021-8441-4883-a3fe-c0711e56709b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i[282309,282322] [2021-11-07 08:19:06,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:19:07,036 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:19:07,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:07 WrapperNode [2021-11-07 08:19:07,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:19:07,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:19:07,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:19:07,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:19:07,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:07" (1/1) ... [2021-11-07 08:19:07,201 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:07" (1/1) ... [2021-11-07 08:19:10,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:19:10,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:19:10,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:19:10,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:19:10,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:07" (1/1) ... [2021-11-07 08:19:10,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:07" (1/1) ... [2021-11-07 08:19:11,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:07" (1/1) ... [2021-11-07 08:19:11,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:07" (1/1) ... [2021-11-07 08:19:13,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:07" (1/1) ... [2021-11-07 08:19:13,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:07" (1/1) ... [2021-11-07 08:19:13,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:07" (1/1) ... [2021-11-07 08:19:14,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:19:14,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:19:14,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:19:14,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:19:14,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:07" (1/1) ... [2021-11-07 08:19:14,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:19:14,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe33b021-8441-4883-a3fe-c0711e56709b/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:19:14,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe33b021-8441-4883-a3fe-c0711e56709b/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:19:14,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe33b021-8441-4883-a3fe-c0711e56709b/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:19:14,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 08:19:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 08:19:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-07 08:19:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:19:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 08:19:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:19:14,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 08:19:14,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 08:19:14,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 08:19:14,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:19:14,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:19:14,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:19:14,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 08:19:14,101 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 08:19:14,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:19:14,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:19:14,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:20:43,961 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 08:20:43,962 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-07 08:20:43,962 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-07 08:20:43,962 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2021-11-07 08:20:43,963 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 08:20:43,963 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 08:20:43,965 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-07 08:20:43,967 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 08:20:43,968 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-07 08:20:43,970 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 08:20:44,051 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:20:44,052 INFO L299 CfgBuilder]: Removed 20127 assume(true) statements. [2021-11-07 08:20:44,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:20:44 BoogieIcfgContainer [2021-11-07 08:20:44,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:20:44,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:20:44,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:20:44,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:20:44,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:19:03" (1/3) ... [2021-11-07 08:20:44,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1483eeed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:20:44, skipping insertion in model container [2021-11-07 08:20:44,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:07" (2/3) ... [2021-11-07 08:20:44,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1483eeed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:20:44, skipping insertion in model container [2021-11-07 08:20:44,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:20:44" (3/3) ... [2021-11-07 08:20:44,081 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-ethoc.cil.i [2021-11-07 08:20:44,087 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:20:44,088 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 08:20:44,195 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:20:44,201 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 08:20:44,202 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 08:20:44,457 INFO L276 IsEmpty]: Start isEmpty. Operand has 15154 states, 15150 states have (on average 1.263960396039604) internal successors, (19149), 15153 states have internal predecessors, (19149), 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 08:20:44,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 08:20:44,469 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:20:44,470 INFO L513 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] [2021-11-07 08:20:44,471 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 08:20:44,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:20:44,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1966860879, now seen corresponding path program 1 times [2021-11-07 08:20:44,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:20:44,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584745355] [2021-11-07 08:20:44,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:20:44,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:20:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:20:45,454 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 08:20:45,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:20:45,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584745355] [2021-11-07 08:20:45,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584745355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:20:45,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:20:45,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:20:45,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406704814] [2021-11-07 08:20:45,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:20:45,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:20:45,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:20:45,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:20:45,551 INFO L87 Difference]: Start difference. First operand has 15154 states, 15150 states have (on average 1.263960396039604) internal successors, (19149), 15153 states have internal predecessors, (19149), 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) Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 08:20:49,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:20:49,474 INFO L93 Difference]: Finished difference Result 45110 states and 56980 transitions. [2021-11-07 08:20:49,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:20:49,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-11-07 08:20:49,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:20:49,723 INFO L225 Difference]: With dead ends: 45110 [2021-11-07 08:20:49,723 INFO L226 Difference]: Without dead ends: 27803 [2021-11-07 08:20:49,785 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:20:49,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27803 states. [2021-11-07 08:20:50,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27803 to 27803. [2021-11-07 08:20:50,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27803 states, 27799 states have (on average 1.198928018993489) internal successors, (33329), 27802 states have internal predecessors, (33329), 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 08:20:51,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27803 states to 27803 states and 33329 transitions. [2021-11-07 08:20:51,069 INFO L78 Accepts]: Start accepts. Automaton has 27803 states and 33329 transitions. Word has length 51 [2021-11-07 08:20:51,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:20:51,072 INFO L470 AbstractCegarLoop]: Abstraction has 27803 states and 33329 transitions. [2021-11-07 08:20:51,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 08:20:51,073 INFO L276 IsEmpty]: Start isEmpty. Operand 27803 states and 33329 transitions. [2021-11-07 08:20:51,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 08:20:51,091 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:20:51,092 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:20:51,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:20:51,092 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 08:20:51,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:20:51,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1327347972, now seen corresponding path program 1 times [2021-11-07 08:20:51,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:20:51,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860812338] [2021-11-07 08:20:51,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:20:51,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:20:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:20:51,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:20:51,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:20:51,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860812338] [2021-11-07 08:20:51,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860812338] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:20:51,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:20:51,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:20:51,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250178610] [2021-11-07 08:20:51,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:20:51,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:20:51,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:20:51,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:20:51,437 INFO L87 Difference]: Start difference. First operand 27803 states and 33329 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 08:20:54,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:20:54,982 INFO L93 Difference]: Finished difference Result 55504 states and 66544 transitions. [2021-11-07 08:20:54,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:20:54,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2021-11-07 08:20:54,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:20:55,128 INFO L225 Difference]: With dead ends: 55504 [2021-11-07 08:20:55,128 INFO L226 Difference]: Without dead ends: 41628 [2021-11-07 08:20:55,176 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:20:55,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41628 states. [2021-11-07 08:20:56,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41628 to 41628. [2021-11-07 08:20:56,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41628 states, 41624 states have (on average 1.1990438208725736) internal successors, (49909), 41627 states have internal predecessors, (49909), 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 08:20:56,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41628 states to 41628 states and 49909 transitions. [2021-11-07 08:20:56,501 INFO L78 Accepts]: Start accepts. Automaton has 41628 states and 49909 transitions. Word has length 76 [2021-11-07 08:20:56,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:20:56,502 INFO L470 AbstractCegarLoop]: Abstraction has 41628 states and 49909 transitions. [2021-11-07 08:20:56,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 08:20:56,504 INFO L276 IsEmpty]: Start isEmpty. Operand 41628 states and 49909 transitions. [2021-11-07 08:20:56,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 08:20:56,511 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:20:56,512 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:20:56,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:20:56,519 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 08:20:56,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:20:56,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1069182534, now seen corresponding path program 1 times [2021-11-07 08:20:56,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:20:56,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163845918] [2021-11-07 08:20:56,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:20:56,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:20:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:20:57,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 08:20:57,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:20:57,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163845918] [2021-11-07 08:20:57,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163845918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:20:57,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:20:57,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:20:57,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783807401] [2021-11-07 08:20:57,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:20:57,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:20:57,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:20:57,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:20:57,082 INFO L87 Difference]: Start difference. First operand 41628 states and 49909 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 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 08:20:59,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:20:59,914 INFO L93 Difference]: Finished difference Result 83156 states and 99706 transitions. [2021-11-07 08:20:59,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:20:59,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 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 76 [2021-11-07 08:20:59,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:21:00,174 INFO L225 Difference]: With dead ends: 83156 [2021-11-07 08:21:00,174 INFO L226 Difference]: Without dead ends: 83152 [2021-11-07 08:21:00,203 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:21:00,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83152 states. [2021-11-07 08:21:02,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83152 to 83144. [2021-11-07 08:21:03,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83144 states, 83140 states have (on average 1.1991339908587924) internal successors, (99696), 83143 states have internal predecessors, (99696), 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 08:21:03,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83144 states to 83144 states and 99696 transitions. [2021-11-07 08:21:03,300 INFO L78 Accepts]: Start accepts. Automaton has 83144 states and 99696 transitions. Word has length 76 [2021-11-07 08:21:03,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:21:03,303 INFO L470 AbstractCegarLoop]: Abstraction has 83144 states and 99696 transitions. [2021-11-07 08:21:03,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 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 08:21:03,303 INFO L276 IsEmpty]: Start isEmpty. Operand 83144 states and 99696 transitions. [2021-11-07 08:21:03,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 08:21:03,322 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:21:03,322 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:21:03,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:21:03,323 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 08:21:03,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:21:03,324 INFO L85 PathProgramCache]: Analyzing trace with hash -987091907, now seen corresponding path program 1 times [2021-11-07 08:21:03,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:21:03,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032004830] [2021-11-07 08:21:03,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:21:03,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:21:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:21:03,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 08:21:03,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:21:03,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032004830] [2021-11-07 08:21:03,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032004830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:21:03,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:21:03,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:21:03,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494272045] [2021-11-07 08:21:03,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:21:03,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:21:03,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:21:03,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:21:03,767 INFO L87 Difference]: Start difference. First operand 83144 states and 99696 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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 08:21:06,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:21:06,497 INFO L93 Difference]: Finished difference Result 83144 states and 99696 transitions. [2021-11-07 08:21:06,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:21:06,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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 78 [2021-11-07 08:21:06,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:21:06,930 INFO L225 Difference]: With dead ends: 83144 [2021-11-07 08:21:06,930 INFO L226 Difference]: Without dead ends: 83120 [2021-11-07 08:21:06,983 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:21:07,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83120 states. [2021-11-07 08:21:09,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83120 to 83120. [2021-11-07 08:21:09,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83120 states, 83118 states have (on average 1.1991265429870785) internal successors, (99669), 83119 states have internal predecessors, (99669), 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 08:21:09,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83120 states to 83120 states and 99669 transitions. [2021-11-07 08:21:09,764 INFO L78 Accepts]: Start accepts. Automaton has 83120 states and 99669 transitions. Word has length 78 [2021-11-07 08:21:09,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:21:09,765 INFO L470 AbstractCegarLoop]: Abstraction has 83120 states and 99669 transitions. [2021-11-07 08:21:09,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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 08:21:09,766 INFO L276 IsEmpty]: Start isEmpty. Operand 83120 states and 99669 transitions. [2021-11-07 08:21:09,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-07 08:21:09,919 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:21:09,919 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:21:09,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 08:21:09,921 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 08:21:09,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:21:09,922 INFO L85 PathProgramCache]: Analyzing trace with hash -577059934, now seen corresponding path program 1 times [2021-11-07 08:21:09,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:21:09,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322672024] [2021-11-07 08:21:09,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:21:09,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:21:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:21:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 08:21:10,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:21:10,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322672024] [2021-11-07 08:21:10,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322672024] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:21:10,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:21:10,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:21:10,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489454832] [2021-11-07 08:21:10,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:21:10,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:21:10,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:21:10,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:21:10,410 INFO L87 Difference]: Start difference. First operand 83120 states and 99669 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 08:21:15,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:21:15,828 INFO L93 Difference]: Finished difference Result 171898 states and 206539 transitions. [2021-11-07 08:21:15,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:21:15,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 223 [2021-11-07 08:21:15,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:21:16,097 INFO L225 Difference]: With dead ends: 171898 [2021-11-07 08:21:16,098 INFO L226 Difference]: Without dead ends: 88878 [2021-11-07 08:21:16,232 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:21:16,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88878 states. [2021-11-07 08:21:18,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88878 to 88822. [2021-11-07 08:21:18,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88822 states, 88820 states have (on average 1.2019139833370862) internal successors, (106754), 88821 states have internal predecessors, (106754), 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 08:21:18,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88822 states to 88822 states and 106754 transitions. [2021-11-07 08:21:18,944 INFO L78 Accepts]: Start accepts. Automaton has 88822 states and 106754 transitions. Word has length 223 [2021-11-07 08:21:18,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:21:18,945 INFO L470 AbstractCegarLoop]: Abstraction has 88822 states and 106754 transitions. [2021-11-07 08:21:18,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 08:21:18,946 INFO L276 IsEmpty]: Start isEmpty. Operand 88822 states and 106754 transitions. [2021-11-07 08:21:19,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-07 08:21:19,027 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:21:19,028 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:21:19,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 08:21:19,028 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 08:21:19,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:21:19,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1881725157, now seen corresponding path program 1 times [2021-11-07 08:21:19,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:21:19,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970642241] [2021-11-07 08:21:19,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:21:19,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:21:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:21:19,391 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 08:21:19,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:21:19,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970642241] [2021-11-07 08:21:19,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970642241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:21:19,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:21:19,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:21:19,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743360927] [2021-11-07 08:21:19,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:21:19,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:21:19,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:21:19,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:21:19,396 INFO L87 Difference]: Start difference. First operand 88822 states and 106754 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 08:21:25,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:21:25,583 INFO L93 Difference]: Finished difference Result 203532 states and 244709 transitions. [2021-11-07 08:21:25,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:21:25,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 229 [2021-11-07 08:21:25,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:21:25,827 INFO L225 Difference]: With dead ends: 203532 [2021-11-07 08:21:25,827 INFO L226 Difference]: Without dead ends: 114374 [2021-11-07 08:21:25,959 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:21:26,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114374 states.