./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--pegasus.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac650b3-51d2-4d0f-a1ec-4e7bc9c6ee74/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac650b3-51d2-4d0f-a1ec-4e7bc9c6ee74/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac650b3-51d2-4d0f-a1ec-4e7bc9c6ee74/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac650b3-51d2-4d0f-a1ec-4e7bc9c6ee74/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--pegasus.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac650b3-51d2-4d0f-a1ec-4e7bc9c6ee74/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac650b3-51d2-4d0f-a1ec-4e7bc9c6ee74/bin/uautomizer-hJ6jxDFKc3 --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 3d8b9e1c2eb879b4f197c2210baf97f1f90ac783 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:34:00,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:34:00,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:34:00,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:34:00,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:34:00,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:34:01,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:34:01,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:34:01,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:34:01,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:34:01,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:34:01,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:34:01,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:34:01,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:34:01,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:34:01,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:34:01,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:34:01,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:34:01,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:34:01,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:34:01,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:34:01,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:34:01,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:34:01,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:34:01,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:34:01,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:34:01,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:34:01,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:34:01,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:34:01,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:34:01,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:34:01,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:34:01,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:34:01,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:34:01,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:34:01,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:34:01,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:34:01,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:34:01,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:34:01,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:34:01,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:34:01,071 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac650b3-51d2-4d0f-a1ec-4e7bc9c6ee74/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-10-15 19:34:01,118 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:34:01,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:34:01,119 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:34:01,119 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:34:01,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:34:01,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:34:01,129 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:34:01,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:34:01,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:34:01,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:34:01,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:34:01,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:34:01,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:34:01,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:34:01,131 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:34:01,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:34:01,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:34:01,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:34:01,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:34:01,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:34:01,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:34:01,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:34:01,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:34:01,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:34:01,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:34:01,134 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:34:01,134 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:34:01,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:34:01,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:34:01,136 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_3ac650b3-51d2-4d0f-a1ec-4e7bc9c6ee74/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac650b3-51d2-4d0f-a1ec-4e7bc9c6ee74/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d8b9e1c2eb879b4f197c2210baf97f1f90ac783 [2021-10-15 19:34:01,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:34:01,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:34:01,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:34:01,448 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:34:01,450 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:34:01,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac650b3-51d2-4d0f-a1ec-4e7bc9c6ee74/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--pegasus.ko-entry_point.cil.out.i [2021-10-15 19:34:01,539 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac650b3-51d2-4d0f-a1ec-4e7bc9c6ee74/bin/uautomizer-hJ6jxDFKc3/data/c71059d89/b220b9b5680b4f1b9f293e233d5320bf/FLAGfae03875f [2021-10-15 19:34:02,497 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:34:02,498 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac650b3-51d2-4d0f-a1ec-4e7bc9c6ee74/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--pegasus.ko-entry_point.cil.out.i [2021-10-15 19:34:02,564 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac650b3-51d2-4d0f-a1ec-4e7bc9c6ee74/bin/uautomizer-hJ6jxDFKc3/data/c71059d89/b220b9b5680b4f1b9f293e233d5320bf/FLAGfae03875f [2021-10-15 19:34:02,922 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac650b3-51d2-4d0f-a1ec-4e7bc9c6ee74/bin/uautomizer-hJ6jxDFKc3/data/c71059d89/b220b9b5680b4f1b9f293e233d5320bf [2021-10-15 19:34:02,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:34:02,926 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:34:02,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:34:02,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:34:02,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:34:02,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:34:02" (1/1) ... [2021-10-15 19:34:02,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ac49191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:02, skipping insertion in model container [2021-10-15 19:34:02,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:34:02" (1/1) ... [2021-10-15 19:34:02,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:34:03,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:34:03,769 WARN L1214 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5411] [2021-10-15 19:34:03,770 WARN L1214 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5412-5413] [2021-10-15 19:34:03,987 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_3ac650b3-51d2-4d0f-a1ec-4e7bc9c6ee74/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--pegasus.ko-entry_point.cil.out.i[162723,162736] [2021-10-15 19:34:05,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:34:05,214 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:34:05,397 WARN L1214 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5411] [2021-10-15 19:34:05,398 WARN L1214 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5412-5413] [2021-10-15 19:34:05,414 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_3ac650b3-51d2-4d0f-a1ec-4e7bc9c6ee74/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--pegasus.ko-entry_point.cil.out.i[162723,162736] [2021-10-15 19:34:05,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:34:05,919 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:34:05,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:05 WrapperNode [2021-10-15 19:34:05,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:34:05,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:34:05,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:34:05,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:34:05,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:05" (1/1) ... [2021-10-15 19:34:06,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:05" (1/1) ... [2021-10-15 19:34:06,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:34:06,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:34:06,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:34:06,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:34:06,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:05" (1/1) ... [2021-10-15 19:34:06,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:05" (1/1) ... [2021-10-15 19:34:06,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:05" (1/1) ... [2021-10-15 19:34:06,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:05" (1/1) ... [2021-10-15 19:34:07,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:05" (1/1) ... [2021-10-15 19:34:07,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:05" (1/1) ... [2021-10-15 19:34:07,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:05" (1/1) ... [2021-10-15 19:34:07,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:34:07,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:34:07,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:34:07,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:34:07,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:05" (1/1) ... [2021-10-15 19:34:07,365 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:34:07,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac650b3-51d2-4d0f-a1ec-4e7bc9c6ee74/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:34:07,395 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac650b3-51d2-4d0f-a1ec-4e7bc9c6ee74/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:34:07,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac650b3-51d2-4d0f-a1ec-4e7bc9c6ee74/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:34:07,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-10-15 19:34:07,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-10-15 19:34:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:34:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-15 19:34:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-10-15 19:34:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:34:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-15 19:34:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-10-15 19:34:07,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-10-15 19:34:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 19:34:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 19:34:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-15 19:34:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-15 19:34:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:34:07,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:34:07,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:34:40,809 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:34:40,809 INFO L299 CfgBuilder]: Removed 1777 assume(true) statements. [2021-10-15 19:34:40,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:34:40 BoogieIcfgContainer [2021-10-15 19:34:40,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:34:40,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:34:40,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:34:40,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:34:40,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:34:02" (1/3) ... [2021-10-15 19:34:40,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486c034d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:34:40, skipping insertion in model container [2021-10-15 19:34:40,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:05" (2/3) ... [2021-10-15 19:34:40,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486c034d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:34:40, skipping insertion in model container [2021-10-15 19:34:40,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:34:40" (3/3) ... [2021-10-15 19:34:40,827 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--pegasus.ko-entry_point.cil.out.i [2021-10-15 19:34:40,834 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:34:40,834 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-10-15 19:34:40,902 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:34:40,908 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, mConcurrency=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 [2021-10-15 19:34:40,908 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-10-15 19:34:40,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 1969 places, 2777 transitions, 5554 flow [2021-10-15 19:34:41,299 INFO L129 PetriNetUnfolder]: 809/2777 cut-off events. [2021-10-15 19:34:41,299 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:34:41,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2778 conditions, 2777 events. 809/2777 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 15516 event pairs, 0 based on Foata normal form. 0/1949 useless extension candidates. Maximal degree in co-relation 0. Up to 71 conditions per place. [2021-10-15 19:34:41,308 INFO L82 GeneralOperation]: Start removeDead. Operand has 1969 places, 2777 transitions, 5554 flow [2021-10-15 19:34:41,352 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1958 places, 2760 transitions, 5520 flow [2021-10-15 19:34:41,370 INFO L129 PetriNetUnfolder]: 108/395 cut-off events. [2021-10-15 19:34:41,370 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:34:41,371 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:34:41,371 INFO L254 CegarLoopForPetriNet]: 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] [2021-10-15 19:34:41,373 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-10-15 19:34:41,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:34:41,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1178984912, now seen corresponding path program 1 times [2021-10-15 19:34:41,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:34:41,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370916989] [2021-10-15 19:34:41,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:34:41,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:34:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:34:42,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:34:42,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:34:42,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370916989] [2021-10-15 19:34:42,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370916989] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:34:42,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:34:42,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:34:42,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955614884] [2021-10-15 19:34:42,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:34:42,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:34:42,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:34:42,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:34:42,453 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 2725 out of 2777 [2021-10-15 19:34:42,477 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1958 places, 2760 transitions, 5520 flow. Second operand has 3 states, 3 states have (on average 2725.6666666666665) internal successors, (8177), 3 states have internal predecessors, (8177), 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) [2021-10-15 19:34:42,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:34:42,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2725 of 2777 [2021-10-15 19:34:42,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:34:42,753 INFO L129 PetriNetUnfolder]: 757/2715 cut-off events. [2021-10-15 19:34:42,753 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:34:42,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2724 conditions, 2715 events. 757/2715 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 15247 event pairs, 0 based on Foata normal form. 46/1986 useless extension candidates. Maximal degree in co-relation 2632. Up to 71 conditions per place. [2021-10-15 19:34:42,772 INFO L132 encePairwiseOnDemand]: 2728/2777 looper letters, 5 selfloop transitions, 2 changer transitions 0/2715 dead transitions. [2021-10-15 19:34:42,772 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1960 places, 2715 transitions, 5444 flow [2021-10-15 19:34:42,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:34:42,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:34:42,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8229 transitions. [2021-10-15 19:34:42,815 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9877565718401152 [2021-10-15 19:34:42,816 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 8229 transitions. [2021-10-15 19:34:42,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 8229 transitions. [2021-10-15 19:34:42,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:34:42,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 8229 transitions. [2021-10-15 19:34:42,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 2743.0) internal successors, (8229), 3 states have internal predecessors, (8229), 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) [2021-10-15 19:34:42,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2777.0) internal successors, (11108), 4 states have internal predecessors, (11108), 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) [2021-10-15 19:34:42,907 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2777.0) internal successors, (11108), 4 states have internal predecessors, (11108), 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) [2021-10-15 19:34:42,910 INFO L186 Difference]: Start difference. First operand has 1958 places, 2760 transitions, 5520 flow. Second operand 3 states and 8229 transitions. [2021-10-15 19:34:42,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1960 places, 2715 transitions, 5444 flow [2021-10-15 19:34:42,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1960 places, 2715 transitions, 5444 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:34:42,999 INFO L242 Difference]: Finished difference. Result has 1961 places, 2715 transitions, 5440 flow [2021-10-15 19:34:43,006 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=2777, PETRI_DIFFERENCE_MINUEND_FLOW=5428, PETRI_DIFFERENCE_MINUEND_PLACES=1958, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2714, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2712, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=5440, PETRI_PLACES=1961, PETRI_TRANSITIONS=2715} [2021-10-15 19:34:43,007 INFO L334 CegarLoopForPetriNet]: 1958 programPoint places, 3 predicate places. [2021-10-15 19:34:43,008 INFO L470 AbstractCegarLoop]: Abstraction has has 1961 places, 2715 transitions, 5440 flow [2021-10-15 19:34:43,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2725.6666666666665) internal successors, (8177), 3 states have internal predecessors, (8177), 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) [2021-10-15 19:34:43,016 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:34:43,016 INFO L254 CegarLoopForPetriNet]: 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] [2021-10-15 19:34:43,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:34:43,018 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-10-15 19:34:43,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:34:43,019 INFO L82 PathProgramCache]: Analyzing trace with hash -669800872, now seen corresponding path program 1 times [2021-10-15 19:34:43,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:34:43,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300801997] [2021-10-15 19:34:43,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:34:43,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:34:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:34:43,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-15 19:34:43,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:34:43,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300801997] [2021-10-15 19:34:43,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300801997] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:34:43,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:34:43,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:34:43,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620365602] [2021-10-15 19:34:43,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:34:43,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:34:43,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:34:43,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:34:43,625 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 2646 out of 2777 [2021-10-15 19:34:43,640 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1961 places, 2715 transitions, 5440 flow. Second operand has 3 states, 3 states have (on average 2647.3333333333335) internal successors, (7942), 3 states have internal predecessors, (7942), 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) [2021-10-15 19:34:43,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:34:43,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2646 of 2777 [2021-10-15 19:34:43,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:34:44,562 INFO L129 PetriNetUnfolder]: 1112/3971 cut-off events. [2021-10-15 19:34:44,562 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 19:34:44,567 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4070 conditions, 3971 events. 1112/3971 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 20871 event pairs, 0 based on Foata normal form. 0/2837 useless extension candidates. Maximal degree in co-relation 4028. Up to 114 conditions per place. [2021-10-15 19:34:44,584 INFO L132 encePairwiseOnDemand]: 2770/2777 looper letters, 84 selfloop transitions, 6 changer transitions 0/2720 dead transitions. [2021-10-15 19:34:44,584 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1963 places, 2720 transitions, 5630 flow [2021-10-15 19:34:44,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:34:44,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:34:44,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8029 transitions. [2021-10-15 19:34:44,607 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9637498499579883 [2021-10-15 19:34:44,608 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 8029 transitions. [2021-10-15 19:34:44,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 8029 transitions. [2021-10-15 19:34:44,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:34:44,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 8029 transitions. [2021-10-15 19:34:44,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 2676.3333333333335) internal successors, (8029), 3 states have internal predecessors, (8029), 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) [2021-10-15 19:34:44,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2777.0) internal successors, (11108), 4 states have internal predecessors, (11108), 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) [2021-10-15 19:34:44,663 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2777.0) internal successors, (11108), 4 states have internal predecessors, (11108), 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) [2021-10-15 19:34:44,663 INFO L186 Difference]: Start difference. First operand has 1961 places, 2715 transitions, 5440 flow. Second operand 3 states and 8029 transitions. [2021-10-15 19:34:44,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1963 places, 2720 transitions, 5630 flow [2021-10-15 19:34:44,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1962 places, 2720 transitions, 5626 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-10-15 19:34:44,732 INFO L242 Difference]: Finished difference. Result has 1964 places, 2720 transitions, 5482 flow [2021-10-15 19:34:44,736 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=2777, PETRI_DIFFERENCE_MINUEND_FLOW=5436, PETRI_DIFFERENCE_MINUEND_PLACES=1960, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2709, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=5482, PETRI_PLACES=1964, PETRI_TRANSITIONS=2720} [2021-10-15 19:34:44,737 INFO L334 CegarLoopForPetriNet]: 1958 programPoint places, 6 predicate places. [2021-10-15 19:34:44,737 INFO L470 AbstractCegarLoop]: Abstraction has has 1964 places, 2720 transitions, 5482 flow [2021-10-15 19:34:44,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2647.3333333333335) internal successors, (7942), 3 states have internal predecessors, (7942), 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) [2021-10-15 19:34:44,741 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:34:44,742 INFO L254 CegarLoopForPetriNet]: 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] [2021-10-15 19:34:44,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:34:44,742 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-10-15 19:34:44,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:34:44,743 INFO L82 PathProgramCache]: Analyzing trace with hash -748318212, now seen corresponding path program 1 times [2021-10-15 19:34:44,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:34:44,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101589399] [2021-10-15 19:34:44,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:34:44,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:34:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:34:45,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-15 19:34:45,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:34:45,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101589399] [2021-10-15 19:34:45,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101589399] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:34:45,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:34:45,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:34:45,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291786899] [2021-10-15 19:34:45,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:34:45,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:34:45,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:34:45,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:34:45,213 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 2707 out of 2777 [2021-10-15 19:34:45,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1964 places, 2720 transitions, 5482 flow. Second operand has 3 states, 3 states have (on average 2708.3333333333335) internal successors, (8125), 3 states have internal predecessors, (8125), 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) [2021-10-15 19:34:45,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:34:45,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2707 of 2777 [2021-10-15 19:34:45,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:34:46,158 INFO L129 PetriNetUnfolder]: 1593/5662 cut-off events. [2021-10-15 19:34:46,158 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-10-15 19:34:46,166 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5740 conditions, 5662 events. 1593/5662 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 34603 event pairs, 0 based on Foata normal form. 0/4042 useless extension candidates. Maximal degree in co-relation 5693. Up to 195 conditions per place. [2021-10-15 19:34:46,193 INFO L132 encePairwiseOnDemand]: 2773/2777 looper letters, 22 selfloop transitions, 3 changer transitions 0/2722 dead transitions. [2021-10-15 19:34:46,193 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1966 places, 2722 transitions, 5536 flow [2021-10-15 19:34:46,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:34:46,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:34:46,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8147 transitions. [2021-10-15 19:34:46,219 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9779138158684432 [2021-10-15 19:34:46,220 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 8147 transitions. [2021-10-15 19:34:46,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 8147 transitions. [2021-10-15 19:34:46,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:34:46,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 8147 transitions. [2021-10-15 19:34:46,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 2715.6666666666665) internal successors, (8147), 3 states have internal predecessors, (8147), 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) [2021-10-15 19:34:46,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2777.0) internal successors, (11108), 4 states have internal predecessors, (11108), 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) [2021-10-15 19:34:46,278 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2777.0) internal successors, (11108), 4 states have internal predecessors, (11108), 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) [2021-10-15 19:34:46,278 INFO L186 Difference]: Start difference. First operand has 1964 places, 2720 transitions, 5482 flow. Second operand 3 states and 8147 transitions. [2021-10-15 19:34:46,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1966 places, 2722 transitions, 5536 flow [2021-10-15 19:34:46,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1964 places, 2722 transitions, 5524 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:34:46,348 INFO L242 Difference]: Finished difference. Result has 1966 places, 2722 transitions, 5492 flow [2021-10-15 19:34:46,353 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=2777, PETRI_DIFFERENCE_MINUEND_FLOW=5470, PETRI_DIFFERENCE_MINUEND_PLACES=1962, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2720, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2717, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=5492, PETRI_PLACES=1966, PETRI_TRANSITIONS=2722} [2021-10-15 19:34:46,355 INFO L334 CegarLoopForPetriNet]: 1958 programPoint places, 8 predicate places. [2021-10-15 19:34:46,356 INFO L470 AbstractCegarLoop]: Abstraction has has 1966 places, 2722 transitions, 5492 flow [2021-10-15 19:34:46,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2708.3333333333335) internal successors, (8125), 3 states have internal predecessors, (8125), 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) [2021-10-15 19:34:46,359 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:34:46,360 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2021-10-15 19:34:46,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 19:34:46,360 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-10-15 19:34:46,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:34:46,361 INFO L82 PathProgramCache]: Analyzing trace with hash 15469038, now seen corresponding path program 1 times [2021-10-15 19:34:46,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:34:46,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664876646] [2021-10-15 19:34:46,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:34:46,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:34:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:34:46,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-15 19:34:46,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:34:46,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664876646] [2021-10-15 19:34:46,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664876646] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:34:46,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:34:46,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:34:46,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912030776] [2021-10-15 19:34:46,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:34:46,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:34:46,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:34:46,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:34:46,945 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 2725 out of 2777 [2021-10-15 19:34:46,954 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1966 places, 2722 transitions, 5492 flow. Second operand has 3 states, 3 states have (on average 2726.3333333333335) internal successors, (8179), 3 states have internal predecessors, (8179), 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) [2021-10-15 19:34:46,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:34:46,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2725 of 2777 [2021-10-15 19:34:46,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:34:49,912 INFO L129 PetriNetUnfolder]: 1591/5662 cut-off events. [2021-10-15 19:34:49,912 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-15 19:34:49,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5711 conditions, 5662 events. 1591/5662 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 34523 event pairs, 0 based on Foata normal form. 2/4036 useless extension candidates. Maximal degree in co-relation 5662. Up to 195 conditions per place. [2021-10-15 19:34:49,949 INFO L132 encePairwiseOnDemand]: 2775/2777 looper letters, 4 selfloop transitions, 0 changer transitions 1/2722 dead transitions. [2021-10-15 19:34:49,950 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1968 places, 2722 transitions, 5502 flow [2021-10-15 19:34:49,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:34:49,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:34:49,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8181 transitions. [2021-10-15 19:34:49,977 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9819949585884048 [2021-10-15 19:34:49,977 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 8181 transitions. [2021-10-15 19:34:49,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 8181 transitions. [2021-10-15 19:34:49,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:34:49,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 8181 transitions. [2021-10-15 19:34:50,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 2727.0) internal successors, (8181), 3 states have internal predecessors, (8181), 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) [2021-10-15 19:34:50,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2777.0) internal successors, (11108), 4 states have internal predecessors, (11108), 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) [2021-10-15 19:34:50,032 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2777.0) internal successors, (11108), 4 states have internal predecessors, (11108), 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) [2021-10-15 19:34:50,032 INFO L186 Difference]: Start difference. First operand has 1966 places, 2722 transitions, 5492 flow. Second operand 3 states and 8181 transitions. [2021-10-15 19:34:50,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1968 places, 2722 transitions, 5502 flow [2021-10-15 19:34:50,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1966 places, 2722 transitions, 5496 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:34:50,103 INFO L242 Difference]: Finished difference. Result has 1967 places, 2721 transitions, 5486 flow [2021-10-15 19:34:50,108 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=2777, PETRI_DIFFERENCE_MINUEND_FLOW=5486, PETRI_DIFFERENCE_MINUEND_PLACES=1964, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2722, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=5486, PETRI_PLACES=1967, PETRI_TRANSITIONS=2721} [2021-10-15 19:34:50,109 INFO L334 CegarLoopForPetriNet]: 1958 programPoint places, 9 predicate places. [2021-10-15 19:34:50,109 INFO L470 AbstractCegarLoop]: Abstraction has has 1967 places, 2721 transitions, 5486 flow [2021-10-15 19:34:50,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2726.3333333333335) internal successors, (8179), 3 states have internal predecessors, (8179), 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) [2021-10-15 19:34:50,113 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:34:50,113 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2021-10-15 19:34:50,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 19:34:50,114 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-10-15 19:34:50,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:34:50,114 INFO L82 PathProgramCache]: Analyzing trace with hash 504957378, now seen corresponding path program 1 times [2021-10-15 19:34:50,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:34:50,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860098548] [2021-10-15 19:34:50,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:34:50,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:34:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:34:50,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-15 19:34:50,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:34:50,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860098548] [2021-10-15 19:34:50,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860098548] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:34:50,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:34:50,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:34:50,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112303145] [2021-10-15 19:34:50,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:34:50,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:34:50,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:34:50,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:34:50,617 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 2718 out of 2777 [2021-10-15 19:34:50,626 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1967 places, 2721 transitions, 5486 flow. Second operand has 3 states, 3 states have (on average 2719.0) internal successors, (8157), 3 states have internal predecessors, (8157), 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) [2021-10-15 19:34:50,626 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:34:50,626 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2718 of 2777 [2021-10-15 19:34:50,627 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:34:51,682 INFO L129 PetriNetUnfolder]: 2721/9664 cut-off events. [2021-10-15 19:34:51,682 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:34:51,696 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9749 conditions, 9664 events. 2721/9664 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 68947 event pairs, 0 based on Foata normal form. 0/6874 useless extension candidates. Maximal degree in co-relation 9742. Up to 389 conditions per place. [2021-10-15 19:34:51,736 INFO L132 encePairwiseOnDemand]: 2768/2777 looper letters, 9 selfloop transitions, 8 changer transitions 0/2725 dead transitions. [2021-10-15 19:34:51,736 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1968 places, 2725 transitions, 5528 flow [2021-10-15 19:34:51,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:34:51,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:34:51,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8172 transitions. [2021-10-15 19:34:51,759 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9809146561037091 [2021-10-15 19:34:51,759 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 8172 transitions. [2021-10-15 19:34:51,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 8172 transitions. [2021-10-15 19:34:51,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:34:51,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 8172 transitions. [2021-10-15 19:34:51,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 2724.0) internal successors, (8172), 3 states have internal predecessors, (8172), 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) [2021-10-15 19:34:51,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2777.0) internal successors, (11108), 4 states have internal predecessors, (11108), 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) [2021-10-15 19:34:51,805 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2777.0) internal successors, (11108), 4 states have internal predecessors, (11108), 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) [2021-10-15 19:34:51,806 INFO L186 Difference]: Start difference. First operand has 1967 places, 2721 transitions, 5486 flow. Second operand 3 states and 8172 transitions. [2021-10-15 19:34:51,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1968 places, 2725 transitions, 5528 flow [2021-10-15 19:34:51,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1967 places, 2725 transitions, 5526 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-10-15 19:34:51,869 INFO L242 Difference]: Finished difference. Result has 1969 places, 2725 transitions, 5534 flow [2021-10-15 19:34:51,874 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=2777, PETRI_DIFFERENCE_MINUEND_FLOW=5484, PETRI_DIFFERENCE_MINUEND_PLACES=1965, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2713, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=5534, PETRI_PLACES=1969, PETRI_TRANSITIONS=2725} [2021-10-15 19:34:51,875 INFO L334 CegarLoopForPetriNet]: 1958 programPoint places, 11 predicate places. [2021-10-15 19:34:51,875 INFO L470 AbstractCegarLoop]: Abstraction has has 1969 places, 2725 transitions, 5534 flow [2021-10-15 19:34:51,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2719.0) internal successors, (8157), 3 states have internal predecessors, (8157), 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) [2021-10-15 19:34:51,878 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:34:51,878 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2021-10-15 19:34:51,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 19:34:51,879 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-10-15 19:34:51,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:34:51,879 INFO L82 PathProgramCache]: Analyzing trace with hash 647545448, now seen corresponding path program 1 times [2021-10-15 19:34:51,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:34:51,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456619174] [2021-10-15 19:34:51,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:34:51,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:34:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:34:52,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-15 19:34:52,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:34:52,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456619174] [2021-10-15 19:34:52,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456619174] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:34:52,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:34:52,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:34:52,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017834130] [2021-10-15 19:34:52,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:34:52,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:34:52,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:34:52,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:34:52,264 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 2707 out of 2777 [2021-10-15 19:34:52,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1969 places, 2725 transitions, 5534 flow. Second operand has 3 states, 3 states have (on average 2708.6666666666665) internal successors, (8126), 3 states have internal predecessors, (8126), 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) [2021-10-15 19:34:52,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:34:52,274 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2707 of 2777 [2021-10-15 19:34:52,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:34:55,986 INFO L129 PetriNetUnfolder]: 3703/13118 cut-off events. [2021-10-15 19:34:55,986 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-10-15 19:34:56,003 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13345 conditions, 13118 events. 3703/13118 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 104235 event pairs, 0 based on Foata normal form. 0/9342 useless extension candidates. Maximal degree in co-relation 13337. Up to 567 conditions per place. [2021-10-15 19:34:56,041 INFO L132 encePairwiseOnDemand]: 2765/2777 looper letters, 27 selfloop transitions, 6 changer transitions 0/2733 dead transitions. [2021-10-15 19:34:56,042 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1971 places, 2733 transitions, 5620 flow [2021-10-15 19:34:56,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:34:56,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:34:56,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8159 transitions. [2021-10-15 19:34:56,067 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9793542191813708 [2021-10-15 19:34:56,067 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 8159 transitions. [2021-10-15 19:34:56,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 8159 transitions. [2021-10-15 19:34:56,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:34:56,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 8159 transitions. [2021-10-15 19:34:56,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 2719.6666666666665) internal successors, (8159), 3 states have internal predecessors, (8159), 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) [2021-10-15 19:34:56,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2777.0) internal successors, (11108), 4 states have internal predecessors, (11108), 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) [2021-10-15 19:34:56,109 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2777.0) internal successors, (11108), 4 states have internal predecessors, (11108), 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) [2021-10-15 19:34:56,110 INFO L186 Difference]: Start difference. First operand has 1969 places, 2725 transitions, 5534 flow. Second operand 3 states and 8159 transitions. [2021-10-15 19:34:56,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1971 places, 2733 transitions, 5620 flow [2021-10-15 19:34:56,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1969 places, 2733 transitions, 5604 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:34:56,175 INFO L242 Difference]: Finished difference. Result has 1971 places, 2727 transitions, 5566 flow [2021-10-15 19:34:56,181 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=2777, PETRI_DIFFERENCE_MINUEND_FLOW=5518, PETRI_DIFFERENCE_MINUEND_PLACES=1967, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2719, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=5566, PETRI_PLACES=1971, PETRI_TRANSITIONS=2727} [2021-10-15 19:34:56,181 INFO L334 CegarLoopForPetriNet]: 1958 programPoint places, 13 predicate places. [2021-10-15 19:34:56,181 INFO L470 AbstractCegarLoop]: Abstraction has has 1971 places, 2727 transitions, 5566 flow [2021-10-15 19:34:56,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2708.6666666666665) internal successors, (8126), 3 states have internal predecessors, (8126), 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) [2021-10-15 19:34:56,185 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:34:56,185 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2021-10-15 19:34:56,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-15 19:34:56,186 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-10-15 19:34:56,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:34:56,186 INFO L82 PathProgramCache]: Analyzing trace with hash 616244843, now seen corresponding path program 1 times [2021-10-15 19:34:56,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:34:56,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672240276] [2021-10-15 19:34:56,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:34:56,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:34:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:34:56,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-15 19:34:56,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:34:56,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672240276] [2021-10-15 19:34:56,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672240276] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:34:56,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:34:56,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:34:56,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782336734] [2021-10-15 19:34:56,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:34:56,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:34:56,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:34:56,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:34:56,669 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 2692 out of 2777 [2021-10-15 19:34:56,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1971 places, 2727 transitions, 5566 flow. Second operand has 3 states, 3 states have (on average 2692.6666666666665) internal successors, (8078), 3 states have internal predecessors, (8078), 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) [2021-10-15 19:34:56,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:34:56,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2692 of 2777 [2021-10-15 19:34:56,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:34:57,908 INFO L129 PetriNetUnfolder]: 3703/12926 cut-off events. [2021-10-15 19:34:57,908 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2021-10-15 19:34:57,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13198 conditions, 12926 events. 3703/12926 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 101251 event pairs, 0 based on Foata normal form. 0/9260 useless extension candidates. Maximal degree in co-relation 13189. Up to 567 conditions per place. [2021-10-15 19:34:57,938 INFO L132 encePairwiseOnDemand]: 2757/2777 looper letters, 0 selfloop transitions, 0 changer transitions 2689/2689 dead transitions. [2021-10-15 19:34:57,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1935 places, 2689 transitions, 5530 flow [2021-10-15 19:34:57,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:34:57,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:34:57,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8115 transitions. [2021-10-15 19:34:57,967 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9740727403673028 [2021-10-15 19:34:57,968 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 8115 transitions. [2021-10-15 19:34:57,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 8115 transitions. [2021-10-15 19:34:57,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:34:57,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 8115 transitions. [2021-10-15 19:34:57,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 2705.0) internal successors, (8115), 3 states have internal predecessors, (8115), 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) [2021-10-15 19:34:58,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2777.0) internal successors, (11108), 4 states have internal predecessors, (11108), 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) [2021-10-15 19:34:58,008 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2777.0) internal successors, (11108), 4 states have internal predecessors, (11108), 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) [2021-10-15 19:34:58,008 INFO L186 Difference]: Start difference. First operand has 1971 places, 2727 transitions, 5566 flow. Second operand 3 states and 8115 transitions. [2021-10-15 19:34:58,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1935 places, 2689 transitions, 5530 flow [2021-10-15 19:34:58,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1933 places, 2689 transitions, 5518 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:34:58,061 INFO L242 Difference]: Finished difference. Result has 1933 places, 0 transitions, 0 flow [2021-10-15 19:34:58,065 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=2777, PETRI_DIFFERENCE_MINUEND_FLOW=5478, PETRI_DIFFERENCE_MINUEND_PLACES=1931, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2689, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=1933, PETRI_TRANSITIONS=0} [2021-10-15 19:34:58,066 INFO L334 CegarLoopForPetriNet]: 1958 programPoint places, -25 predicate places. [2021-10-15 19:34:58,066 INFO L470 AbstractCegarLoop]: Abstraction has has 1933 places, 0 transitions, 0 flow [2021-10-15 19:34:58,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2692.6666666666665) internal successors, (8078), 3 states have internal predecessors, (8078), 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) [2021-10-15 19:34:58,072 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:34:58,072 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:34:58,073 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:34:58,073 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:34:58,073 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:34:58,074 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:34:58,074 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:34:58,074 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:34:58,075 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:34:58,075 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:34:58,075 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:34:58,076 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:34:58,076 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:34:58,076 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:34:58,076 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:34:58,077 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:34:58,077 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:34:58,077 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:34:58,078 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:34:58,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-15 19:34:58,084 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:34:58,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:34:58 BoogieIcfgContainer [2021-10-15 19:34:58,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:34:58,097 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:34:58,097 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:34:58,097 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:34:58,098 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:34:40" (3/4) ... [2021-10-15 19:34:58,101 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:34:58,299 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1982 nodes and edges [2021-10-15 19:34:58,322 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 582 nodes and edges [2021-10-15 19:34:58,329 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 202 nodes and edges [2021-10-15 19:34:58,336 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 93 nodes and edges [2021-10-15 19:34:58,343 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-15 19:34:58,350 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-15 19:34:58,357 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-15 19:34:58,364 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:35:01,808 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac650b3-51d2-4d0f-a1ec-4e7bc9c6ee74/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:35:01,809 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:35:01,811 INFO L168 Benchmark]: Toolchain (without parser) took 58883.94 ms. Allocated memory was 127.9 MB in the beginning and 1.1 GB in the end (delta: 958.4 MB). Free memory was 88.8 MB in the beginning and 509.9 MB in the end (delta: -421.1 MB). Peak memory consumption was 882.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:35:01,813 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 127.9 MB. Free memory is still 82.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:35:01,814 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2991.59 ms. Allocated memory was 127.9 MB in the beginning and 180.4 MB in the end (delta: 52.4 MB). Free memory was 88.5 MB in the beginning and 86.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 81.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:35:01,815 INFO L168 Benchmark]: Boogie Procedure Inliner took 682.68 ms. Allocated memory was 180.4 MB in the beginning and 285.2 MB in the end (delta: 104.9 MB). Free memory was 86.3 MB in the beginning and 155.7 MB in the end (delta: -69.5 MB). Peak memory consumption was 38.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:35:01,815 INFO L168 Benchmark]: Boogie Preprocessor took 747.59 ms. Allocated memory is still 285.2 MB. Free memory was 155.7 MB in the beginning and 147.9 MB in the end (delta: 7.8 MB). Peak memory consumption was 71.8 MB. Max. memory is 16.1 GB. [2021-10-15 19:35:01,816 INFO L168 Benchmark]: RCFGBuilder took 33461.71 ms. Allocated memory was 285.2 MB in the beginning and 752.9 MB in the end (delta: 467.7 MB). Free memory was 146.9 MB in the beginning and 507.4 MB in the end (delta: -360.5 MB). Peak memory consumption was 472.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:35:01,816 INFO L168 Benchmark]: TraceAbstraction took 17279.54 ms. Allocated memory was 752.9 MB in the beginning and 1.1 GB in the end (delta: 333.4 MB). Free memory was 507.4 MB in the beginning and 748.5 MB in the end (delta: -241.1 MB). Peak memory consumption was 453.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:35:01,819 INFO L168 Benchmark]: Witness Printer took 3711.89 ms. Allocated memory is still 1.1 GB. Free memory was 748.5 MB in the beginning and 509.9 MB in the end (delta: 238.6 MB). Peak memory consumption was 585.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:35:01,821 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 127.9 MB. Free memory is still 82.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2991.59 ms. Allocated memory was 127.9 MB in the beginning and 180.4 MB in the end (delta: 52.4 MB). Free memory was 88.5 MB in the beginning and 86.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 81.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 682.68 ms. Allocated memory was 180.4 MB in the beginning and 285.2 MB in the end (delta: 104.9 MB). Free memory was 86.3 MB in the beginning and 155.7 MB in the end (delta: -69.5 MB). Peak memory consumption was 38.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 747.59 ms. Allocated memory is still 285.2 MB. Free memory was 155.7 MB in the beginning and 147.9 MB in the end (delta: 7.8 MB). Peak memory consumption was 71.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 33461.71 ms. Allocated memory was 285.2 MB in the beginning and 752.9 MB in the end (delta: 467.7 MB). Free memory was 146.9 MB in the beginning and 507.4 MB in the end (delta: -360.5 MB). Peak memory consumption was 472.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17279.54 ms. Allocated memory was 752.9 MB in the beginning and 1.1 GB in the end (delta: 333.4 MB). Free memory was 507.4 MB in the beginning and 748.5 MB in the end (delta: -241.1 MB). Peak memory consumption was 453.1 MB. Max. memory is 16.1 GB. * Witness Printer took 3711.89 ms. Allocated memory is still 1.1 GB. Free memory was 748.5 MB in the beginning and 509.9 MB in the end (delta: 238.6 MB). Peak memory consumption was 585.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 5651]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 5651]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 5651]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 5651]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 5651]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 5651]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 5651]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 5651]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 5651]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 5651]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 5651]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 5651]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 5651]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 5651]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 5651]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 5651]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 5651]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 5651]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 5651]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1969 locations, 19 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 18.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 17184.6ms, OverallIterations: 7, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 12672.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 443.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 143 SDtfs, 28 SDslu, 0 SDs, 0 SdLazy, 164 SolverSat, 43 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5243.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 96.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5566occurred in iteration=6, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 337.5ms SsaConstructionTime, 1431.6ms SatisfiabilityAnalysisTime, 1870.9ms InterpolantComputationTime, 343 NumberOfCodeBlocks, 343 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 336 ConstructedInterpolants, 0 QuantifiedInterpolants, 633 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 14/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 19 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 19:35:01,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ac650b3-51d2-4d0f-a1ec-4e7bc9c6ee74/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...