./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a --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 26d71a6766df17a2d23a86b348a9251fef4bcae90cf6020641e74c486ac2b1eb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 13:44:48,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:44:48,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:44:48,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:44:48,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:44:48,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:44:48,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:44:48,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:44:48,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:44:48,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:44:48,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:44:48,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:44:48,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:44:48,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:44:48,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:44:48,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:44:48,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:44:48,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:44:48,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:44:48,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:44:48,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:44:48,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:44:48,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:44:48,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:44:48,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:44:48,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:44:48,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:44:48,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:44:48,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:44:48,838 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:44:48,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:44:48,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:44:48,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:44:48,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:44:48,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:44:48,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:44:48,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:44:48,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:44:48,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:44:48,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:44:48,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:44:48,848 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-21 13:44:48,885 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:44:48,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:44:48,887 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:44:48,888 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:44:48,889 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:44:48,889 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:44:48,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:44:48,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:44:48,890 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:44:48,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:44:48,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:44:48,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:44:48,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:44:48,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:44:48,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:44:48,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:44:48,893 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:44:48,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:44:48,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:44:48,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:44:48,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:44:48,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:44:48,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:44:48,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:44:48,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:44:48,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:44:48,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:44:48,896 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:44:48,896 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:44:48,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:44:48,897 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_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26d71a6766df17a2d23a86b348a9251fef4bcae90cf6020641e74c486ac2b1eb [2022-11-21 13:44:49,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:44:49,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:44:49,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:44:49,278 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:44:49,279 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:44:49,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2022-11-21 13:44:52,346 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:44:53,073 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:44:53,074 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2022-11-21 13:44:53,111 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/data/2bf26b2d9/0837bf2ce1bf4dabab8176de70a80533/FLAG67fcba799 [2022-11-21 13:44:53,126 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/data/2bf26b2d9/0837bf2ce1bf4dabab8176de70a80533 [2022-11-21 13:44:53,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:44:53,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:44:53,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:44:53,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:44:53,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:44:53,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:44:53" (1/1) ... [2022-11-21 13:44:53,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fddcf41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:53, skipping insertion in model container [2022-11-21 13:44:53,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:44:53" (1/1) ... [2022-11-21 13:44:53,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:44:53,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:44:54,530 WARN L237 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_5e77d232-1329-4c49-9ffc-cf895a0cfff7/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i[172824,172837] [2022-11-21 13:44:55,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:44:55,752 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:44:55,977 WARN L237 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_5e77d232-1329-4c49-9ffc-cf895a0cfff7/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i[172824,172837] [2022-11-21 13:44:56,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:44:56,443 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:44:56,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:56 WrapperNode [2022-11-21 13:44:56,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:44:56,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:44:56,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:44:56,448 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:44:56,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:56" (1/1) ... [2022-11-21 13:44:56,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:56" (1/1) ... [2022-11-21 13:44:56,765 INFO L138 Inliner]: procedures = 310, calls = 1793, calls flagged for inlining = 174, calls inlined = 157, statements flattened = 4693 [2022-11-21 13:44:56,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:44:56,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:44:56,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:44:56,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:44:56,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:56" (1/1) ... [2022-11-21 13:44:56,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:56" (1/1) ... [2022-11-21 13:44:56,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:56" (1/1) ... [2022-11-21 13:44:56,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:56" (1/1) ... [2022-11-21 13:44:56,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:56" (1/1) ... [2022-11-21 13:44:56,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:56" (1/1) ... [2022-11-21 13:44:56,969 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:56" (1/1) ... [2022-11-21 13:44:56,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:56" (1/1) ... [2022-11-21 13:44:57,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:44:57,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:44:57,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:44:57,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:44:57,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:56" (1/1) ... [2022-11-21 13:44:57,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:44:57,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:44:57,128 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:44:57,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:44:57,179 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-21 13:44:57,179 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-21 13:44:57,179 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2022-11-21 13:44:57,179 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2022-11-21 13:44:57,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-21 13:44:57,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-21 13:44:57,180 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-21 13:44:57,181 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-21 13:44:57,181 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_dmac_soft_reset [2022-11-21 13:44:57,181 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_dmac_soft_reset [2022-11-21 13:44:57,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-21 13:44:57,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-21 13:44:57,182 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2022-11-21 13:44:57,182 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2022-11-21 13:44:57,182 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-21 13:44:57,182 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-21 13:44:57,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-21 13:44:57,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-21 13:44:57,183 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_remove [2022-11-21 13:44:57,183 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_remove [2022-11-21 13:44:57,183 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-21 13:44:57,183 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_eeprom_send_cmd [2022-11-21 13:44:57,183 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_eeprom_send_cmd [2022-11-21 13:44:57,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-11-21 13:44:57,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-11-21 13:44:57,184 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-21 13:44:57,184 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-21 13:44:57,184 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_free_rx_ring [2022-11-21 13:44:57,184 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_free_rx_ring [2022-11-21 13:44:57,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-21 13:44:57,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-21 13:44:57,185 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-21 13:44:57,185 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-21 13:44:57,186 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-21 13:44:57,186 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-21 13:44:57,187 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-21 13:44:57,187 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-21 13:44:57,188 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-21 13:44:57,188 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-21 13:44:57,188 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_reg_read [2022-11-21 13:44:57,189 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_reg_read [2022-11-21 13:44:57,189 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-21 13:44:57,189 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-21 13:44:57,189 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_set_mac_address [2022-11-21 13:44:57,189 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_set_mac_address [2022-11-21 13:44:57,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 13:44:57,190 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_get_stats [2022-11-21 13:44:57,190 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_get_stats [2022-11-21 13:44:57,190 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-21 13:44:57,190 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-21 13:44:57,190 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-21 13:44:57,191 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-21 13:44:57,191 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-11-21 13:44:57,191 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-11-21 13:44:57,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 13:44:57,191 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-21 13:44:57,192 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-21 13:44:57,192 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-21 13:44:57,192 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-21 13:44:57,193 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-21 13:44:57,193 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-21 13:44:57,193 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-21 13:44:57,193 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-21 13:44:57,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-11-21 13:44:57,193 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_open [2022-11-21 13:44:57,194 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_open [2022-11-21 13:44:57,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-21 13:44:57,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-21 13:44:57,194 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-21 13:44:57,194 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-21 13:44:57,194 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2022-11-21 13:44:57,194 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2022-11-21 13:44:57,195 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-21 13:44:57,195 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-21 13:44:57,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 13:44:57,195 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-21 13:44:57,195 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-21 13:44:57,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-21 13:44:57,196 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-21 13:44:57,196 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-21 13:44:57,196 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-21 13:44:57,196 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-21 13:44:57,197 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-21 13:44:57,197 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-21 13:44:57,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-21 13:44:57,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-21 13:44:57,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-21 13:44:57,198 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-21 13:44:57,198 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-21 13:44:57,199 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-21 13:44:57,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-21 13:44:57,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-21 13:44:57,199 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_eeprom_enable_access [2022-11-21 13:44:57,199 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_eeprom_enable_access [2022-11-21 13:44:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2022-11-21 13:44:57,200 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2022-11-21 13:44:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_reg_write [2022-11-21 13:44:57,200 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_reg_write [2022-11-21 13:44:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 13:44:57,201 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-21 13:44:57,201 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-21 13:44:57,202 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-21 13:44:57,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-21 13:44:57,202 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2022-11-21 13:44:57,202 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2022-11-21 13:44:57,202 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2022-11-21 13:44:57,202 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2022-11-21 13:44:57,203 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-21 13:44:57,203 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-21 13:44:57,203 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-21 13:44:57,203 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-21 13:44:57,203 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-21 13:44:57,204 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-21 13:44:57,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 13:44:57,204 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-21 13:44:57,204 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-21 13:44:57,204 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-11-21 13:44:57,205 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-11-21 13:44:57,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-21 13:44:57,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-21 13:44:57,209 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_set_multicast_list [2022-11-21 13:44:57,209 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_set_multicast_list [2022-11-21 13:44:57,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 13:44:57,210 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-21 13:44:57,212 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-21 13:44:57,213 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-21 13:44:57,213 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-21 13:44:57,213 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_alloc_rx_buffer [2022-11-21 13:44:57,219 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_alloc_rx_buffer [2022-11-21 13:44:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:44:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-21 13:44:57,219 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-21 13:44:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_stop_rx [2022-11-21 13:44:57,220 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_stop_rx [2022-11-21 13:44:57,220 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-21 13:44:57,220 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-21 13:44:57,220 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-21 13:44:57,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-21 13:44:57,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 13:44:57,221 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-21 13:44:57,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-21 13:44:57,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-21 13:44:57,221 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-21 13:44:57,221 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-21 13:44:57,221 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_isr [2022-11-21 13:44:57,222 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_isr [2022-11-21 13:44:57,222 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_disable [2022-11-21 13:44:57,222 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_disable [2022-11-21 13:44:57,222 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_do_ioctl [2022-11-21 13:44:57,222 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_do_ioctl [2022-11-21 13:44:57,222 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_poll_controller [2022-11-21 13:44:57,222 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_poll_controller [2022-11-21 13:44:57,223 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-21 13:44:57,223 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-21 13:44:57,223 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2022-11-21 13:44:57,223 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2022-11-21 13:44:57,223 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-21 13:44:57,223 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-21 13:44:57,224 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_stop_tx [2022-11-21 13:44:57,224 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_stop_tx [2022-11-21 13:44:57,224 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-21 13:44:57,225 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-21 13:44:57,225 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-21 13:44:57,225 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-21 13:44:57,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:44:57,226 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_free_tx_ring [2022-11-21 13:44:57,226 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_free_tx_ring [2022-11-21 13:44:57,226 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-11-21 13:44:57,226 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-11-21 13:44:57,226 INFO L130 BoogieDeclarations]: Found specification of procedure smsc9420_pci_flush_write [2022-11-21 13:44:57,226 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc9420_pci_flush_write [2022-11-21 13:44:57,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:44:57,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:44:57,227 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-21 13:44:57,227 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-21 13:44:58,174 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:44:58,178 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:44:58,482 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-21 13:45:02,672 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:45:02,690 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:45:02,690 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 13:45:02,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:45:02 BoogieIcfgContainer [2022-11-21 13:45:02,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:45:02,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:45:02,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:45:02,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:45:02,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:44:53" (1/3) ... [2022-11-21 13:45:02,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e3db80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:45:02, skipping insertion in model container [2022-11-21 13:45:02,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:44:56" (2/3) ... [2022-11-21 13:45:02,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e3db80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:45:02, skipping insertion in model container [2022-11-21 13:45:02,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:45:02" (3/3) ... [2022-11-21 13:45:02,702 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2022-11-21 13:45:02,721 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:45:02,721 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 13:45:02,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:45:02,814 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7e695ec8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:45:02,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 13:45:02,824 INFO L276 IsEmpty]: Start isEmpty. Operand has 1602 states, 1108 states have (on average 1.3384476534296028) internal successors, (1483), 1135 states have internal predecessors, (1483), 415 states have call successors, (415), 78 states have call predecessors, (415), 77 states have return successors, (408), 405 states have call predecessors, (408), 408 states have call successors, (408) [2022-11-21 13:45:02,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-21 13:45:02,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:45:02,844 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:02,844 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:45:02,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:02,849 INFO L85 PathProgramCache]: Analyzing trace with hash 725816613, now seen corresponding path program 1 times [2022-11-21 13:45:02,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:02,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607078803] [2022-11-21 13:45:02,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:02,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:03,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:45:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:03,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:45:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:03,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 13:45:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:03,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-21 13:45:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:03,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 13:45:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:03,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:45:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:03,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 13:45:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:03,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 13:45:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:03,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 13:45:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:03,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 13:45:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:03,769 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-21 13:45:03,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:03,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607078803] [2022-11-21 13:45:03,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607078803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:03,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:03,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 13:45:03,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716507316] [2022-11-21 13:45:03,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:03,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:45:03,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:03,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:45:03,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:45:03,841 INFO L87 Difference]: Start difference. First operand has 1602 states, 1108 states have (on average 1.3384476534296028) internal successors, (1483), 1135 states have internal predecessors, (1483), 415 states have call successors, (415), 78 states have call predecessors, (415), 77 states have return successors, (408), 405 states have call predecessors, (408), 408 states have call successors, (408) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-21 13:45:11,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:45:11,713 INFO L93 Difference]: Finished difference Result 4929 states and 7189 transitions. [2022-11-21 13:45:11,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:45:11,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 80 [2022-11-21 13:45:11,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:45:11,772 INFO L225 Difference]: With dead ends: 4929 [2022-11-21 13:45:11,772 INFO L226 Difference]: Without dead ends: 3252 [2022-11-21 13:45:11,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:45:11,790 INFO L413 NwaCegarLoop]: 1908 mSDtfsCounter, 2946 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 2683 mSolverCounterSat, 1107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3333 SdHoareTripleChecker+Valid, 4059 SdHoareTripleChecker+Invalid, 3790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1107 IncrementalHoareTripleChecker+Valid, 2683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:45:11,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3333 Valid, 4059 Invalid, 3790 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1107 Valid, 2683 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-21 13:45:11,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3252 states. [2022-11-21 13:45:12,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3252 to 3074. [2022-11-21 13:45:12,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3074 states, 2120 states have (on average 1.314622641509434) internal successors, (2787), 2156 states have internal predecessors, (2787), 801 states have call successors, (801), 153 states have call predecessors, (801), 152 states have return successors, (800), 794 states have call predecessors, (800), 800 states have call successors, (800) [2022-11-21 13:45:12,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3074 states to 3074 states and 4388 transitions. [2022-11-21 13:45:12,230 INFO L78 Accepts]: Start accepts. Automaton has 3074 states and 4388 transitions. Word has length 80 [2022-11-21 13:45:12,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:45:12,231 INFO L495 AbstractCegarLoop]: Abstraction has 3074 states and 4388 transitions. [2022-11-21 13:45:12,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-21 13:45:12,231 INFO L276 IsEmpty]: Start isEmpty. Operand 3074 states and 4388 transitions. [2022-11-21 13:45:12,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-21 13:45:12,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:45:12,245 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:12,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:45:12,245 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:45:12,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:12,246 INFO L85 PathProgramCache]: Analyzing trace with hash -392738116, now seen corresponding path program 1 times [2022-11-21 13:45:12,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:12,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188372305] [2022-11-21 13:45:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:12,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:12,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 13:45:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:12,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:45:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:12,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-21 13:45:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:12,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-21 13:45:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:12,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-21 13:45:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:12,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 13:45:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:12,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 13:45:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:12,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 13:45:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:12,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 13:45:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:12,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 13:45:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:12,871 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-21 13:45:12,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:12,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188372305] [2022-11-21 13:45:12,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188372305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:12,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:12,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:45:12,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537480107] [2022-11-21 13:45:12,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:12,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:45:12,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:12,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:45:12,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:45:12,876 INFO L87 Difference]: Start difference. First operand 3074 states and 4388 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-21 13:45:21,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:45:21,772 INFO L93 Difference]: Finished difference Result 9523 states and 13666 transitions. [2022-11-21 13:45:21,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:45:21,773 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 85 [2022-11-21 13:45:21,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:45:21,815 INFO L225 Difference]: With dead ends: 9523 [2022-11-21 13:45:21,815 INFO L226 Difference]: Without dead ends: 6470 [2022-11-21 13:45:21,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:45:21,832 INFO L413 NwaCegarLoop]: 1889 mSDtfsCounter, 2880 mSDsluCounter, 4763 mSDsCounter, 0 mSdLazyCounter, 5370 mSolverCounterSat, 1078 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3280 SdHoareTripleChecker+Valid, 6652 SdHoareTripleChecker+Invalid, 6448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1078 IncrementalHoareTripleChecker+Valid, 5370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:45:21,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3280 Valid, 6652 Invalid, 6448 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1078 Valid, 5370 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-11-21 13:45:21,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6470 states. [2022-11-21 13:45:22,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6470 to 6186. [2022-11-21 13:45:22,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6186 states, 4270 states have (on average 1.3142857142857143) internal successors, (5612), 4344 states have internal predecessors, (5612), 1605 states have call successors, (1605), 305 states have call predecessors, (1605), 310 states have return successors, (1624), 1596 states have call predecessors, (1624), 1604 states have call successors, (1624) [2022-11-21 13:45:22,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6186 states to 6186 states and 8841 transitions. [2022-11-21 13:45:22,298 INFO L78 Accepts]: Start accepts. Automaton has 6186 states and 8841 transitions. Word has length 85 [2022-11-21 13:45:22,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:45:22,299 INFO L495 AbstractCegarLoop]: Abstraction has 6186 states and 8841 transitions. [2022-11-21 13:45:22,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-21 13:45:22,299 INFO L276 IsEmpty]: Start isEmpty. Operand 6186 states and 8841 transitions. [2022-11-21 13:45:22,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2022-11-21 13:45:22,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:45:22,330 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 11, 11, 11, 10, 10, 10, 7, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:22,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 13:45:22,331 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:45:22,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:22,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1169972888, now seen corresponding path program 1 times [2022-11-21 13:45:22,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:22,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419693910] [2022-11-21 13:45:22,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:22,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:22,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:22,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419693910] [2022-11-21 13:45:22,870 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-21 13:45:22,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263429542] [2022-11-21 13:45:22,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:22,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:22,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:45:22,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:45:22,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 13:45:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:24,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 4224 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 13:45:24,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:45:24,305 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2022-11-21 13:45:24,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:45:24,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263429542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:24,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:24,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:45:24,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196922705] [2022-11-21 13:45:24,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:24,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:45:24,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:24,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:45:24,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:45:24,308 INFO L87 Difference]: Start difference. First operand 6186 states and 8841 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2022-11-21 13:45:24,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:45:24,965 INFO L93 Difference]: Finished difference Result 17406 states and 24881 transitions. [2022-11-21 13:45:24,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:45:24,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 467 [2022-11-21 13:45:24,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:45:25,039 INFO L225 Difference]: With dead ends: 17406 [2022-11-21 13:45:25,039 INFO L226 Difference]: Without dead ends: 11246 [2022-11-21 13:45:25,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:45:25,074 INFO L413 NwaCegarLoop]: 2538 mSDtfsCounter, 1829 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 4623 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:45:25,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1829 Valid, 4623 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:45:25,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11246 states. [2022-11-21 13:45:25,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11246 to 11186. [2022-11-21 13:45:25,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11186 states, 7770 states have (on average 1.3149292149292149) internal successors, (10217), 7934 states have internal predecessors, (10217), 2827 states have call successors, (2827), 577 states have call predecessors, (2827), 588 states have return successors, (2870), 2790 states have call predecessors, (2870), 2826 states have call successors, (2870) [2022-11-21 13:45:25,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11186 states to 11186 states and 15914 transitions. [2022-11-21 13:45:25,907 INFO L78 Accepts]: Start accepts. Automaton has 11186 states and 15914 transitions. Word has length 467 [2022-11-21 13:45:25,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:45:25,908 INFO L495 AbstractCegarLoop]: Abstraction has 11186 states and 15914 transitions. [2022-11-21 13:45:25,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 2 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2022-11-21 13:45:25,909 INFO L276 IsEmpty]: Start isEmpty. Operand 11186 states and 15914 transitions. [2022-11-21 13:45:25,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2022-11-21 13:45:25,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:45:25,952 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 11, 11, 11, 10, 10, 10, 7, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:25,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 13:45:26,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:26,178 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:45:26,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:26,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1727649181, now seen corresponding path program 1 times [2022-11-21 13:45:26,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:26,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745049084] [2022-11-21 13:45:26,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:26,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:26,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:26,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745049084] [2022-11-21 13:45:26,486 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-21 13:45:26,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221703750] [2022-11-21 13:45:26,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:26,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:26,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:45:26,488 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:45:26,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 13:45:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:27,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 4476 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 13:45:27,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:45:27,903 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2022-11-21 13:45:27,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:45:27,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221703750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:27,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:27,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:45:27,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862365446] [2022-11-21 13:45:27,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:27,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:45:27,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:27,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:45:27,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:45:27,906 INFO L87 Difference]: Start difference. First operand 11186 states and 15914 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 2 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2022-11-21 13:45:28,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:45:28,655 INFO L93 Difference]: Finished difference Result 28867 states and 41112 transitions. [2022-11-21 13:45:28,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:45:28,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 2 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) Word has length 513 [2022-11-21 13:45:28,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:45:28,763 INFO L225 Difference]: With dead ends: 28867 [2022-11-21 13:45:28,763 INFO L226 Difference]: Without dead ends: 17707 [2022-11-21 13:45:28,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:45:28,815 INFO L413 NwaCegarLoop]: 3390 mSDtfsCounter, 1775 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1775 SdHoareTripleChecker+Valid, 5564 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:45:28,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1775 Valid, 5564 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:45:28,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17707 states. [2022-11-21 13:45:30,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17707 to 17699. [2022-11-21 13:45:30,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17699 states, 12403 states have (on average 1.3225026203337902) internal successors, (16403), 12625 states have internal predecessors, (16403), 4365 states have call successors, (4365), 913 states have call predecessors, (4365), 930 states have return successors, (4420), 4320 states have call predecessors, (4420), 4364 states have call successors, (4420) [2022-11-21 13:45:30,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17699 states to 17699 states and 25188 transitions. [2022-11-21 13:45:30,210 INFO L78 Accepts]: Start accepts. Automaton has 17699 states and 25188 transitions. Word has length 513 [2022-11-21 13:45:30,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:45:30,211 INFO L495 AbstractCegarLoop]: Abstraction has 17699 states and 25188 transitions. [2022-11-21 13:45:30,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 2 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2022-11-21 13:45:30,215 INFO L276 IsEmpty]: Start isEmpty. Operand 17699 states and 25188 transitions. [2022-11-21 13:45:30,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2022-11-21 13:45:30,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:45:30,267 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 10, 10, 10, 7, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:30,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 13:45:30,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:30,484 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:45:30,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:30,484 INFO L85 PathProgramCache]: Analyzing trace with hash 223380461, now seen corresponding path program 1 times [2022-11-21 13:45:30,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:30,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608181259] [2022-11-21 13:45:30,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:30,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:30,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:30,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608181259] [2022-11-21 13:45:30,855 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-21 13:45:30,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27557324] [2022-11-21 13:45:30,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:30,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:30,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:45:30,857 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:45:30,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 13:45:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:32,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 4643 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 13:45:32,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:45:32,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 940 trivial. 0 not checked. [2022-11-21 13:45:32,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:45:32,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27557324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:32,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:32,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:45:32,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152586573] [2022-11-21 13:45:32,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:32,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:45:32,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:32,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:45:32,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:45:32,348 INFO L87 Difference]: Start difference. First operand 17699 states and 25188 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 3 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (80), 3 states have call predecessors, (80), 3 states have call successors, (80) [2022-11-21 13:45:33,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:45:33,305 INFO L93 Difference]: Finished difference Result 42291 states and 60097 transitions. [2022-11-21 13:45:33,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:45:33,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 3 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (80), 3 states have call predecessors, (80), 3 states have call successors, (80) Word has length 548 [2022-11-21 13:45:33,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:45:33,583 INFO L225 Difference]: With dead ends: 42291 [2022-11-21 13:45:33,584 INFO L226 Difference]: Without dead ends: 24639 [2022-11-21 13:45:33,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:45:33,641 INFO L413 NwaCegarLoop]: 3347 mSDtfsCounter, 2033 mSDsluCounter, 1937 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2033 SdHoareTripleChecker+Valid, 5284 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:45:33,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2033 Valid, 5284 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:45:33,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24639 states. [2022-11-21 13:45:35,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24639 to 24573. [2022-11-21 13:45:35,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24573 states, 17277 states have (on average 1.3244776292180356) internal successors, (22883), 17553 states have internal predecessors, (22883), 5961 states have call successors, (5961), 1311 states have call predecessors, (5961), 1334 states have return successors, (6024), 5908 states have call predecessors, (6024), 5960 states have call successors, (6024) [2022-11-21 13:45:35,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24573 states to 24573 states and 34868 transitions. [2022-11-21 13:45:35,489 INFO L78 Accepts]: Start accepts. Automaton has 24573 states and 34868 transitions. Word has length 548 [2022-11-21 13:45:35,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:45:35,491 INFO L495 AbstractCegarLoop]: Abstraction has 24573 states and 34868 transitions. [2022-11-21 13:45:35,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 3 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (80), 3 states have call predecessors, (80), 3 states have call successors, (80) [2022-11-21 13:45:35,491 INFO L276 IsEmpty]: Start isEmpty. Operand 24573 states and 34868 transitions. [2022-11-21 13:45:35,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2022-11-21 13:45:35,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:45:35,558 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 10, 10, 10, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:35,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 13:45:35,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:35,771 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:45:35,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:35,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1242153558, now seen corresponding path program 1 times [2022-11-21 13:45:35,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:35,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290737275] [2022-11-21 13:45:35,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:35,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:36,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:36,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290737275] [2022-11-21 13:45:36,319 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-21 13:45:36,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050437480] [2022-11-21 13:45:36,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:36,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:36,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:45:36,323 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:45:36,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 13:45:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:37,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 4782 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 13:45:37,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:45:37,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-11-21 13:45:37,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:45:37,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050437480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:37,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:37,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:45:37,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189184120] [2022-11-21 13:45:37,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:37,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:45:37,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:37,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:45:37,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:45:37,921 INFO L87 Difference]: Start difference. First operand 24573 states and 34868 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2022-11-21 13:45:39,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:45:39,477 INFO L93 Difference]: Finished difference Result 56335 states and 79812 transitions. [2022-11-21 13:45:39,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:45:39,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) Word has length 571 [2022-11-21 13:45:39,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:45:39,616 INFO L225 Difference]: With dead ends: 56335 [2022-11-21 13:45:39,616 INFO L226 Difference]: Without dead ends: 31809 [2022-11-21 13:45:39,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:45:39,680 INFO L413 NwaCegarLoop]: 2890 mSDtfsCounter, 2170 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2170 SdHoareTripleChecker+Valid, 4761 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:45:39,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2170 Valid, 4761 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:45:39,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31809 states. [2022-11-21 13:45:41,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31809 to 31801. [2022-11-21 13:45:41,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31801 states, 22405 states have (on average 1.3237670162910065) internal successors, (29659), 22755 states have internal predecessors, (29659), 7623 states have call successors, (7623), 1743 states have call predecessors, (7623), 1772 states have return successors, (7698), 7558 states have call predecessors, (7698), 7622 states have call successors, (7698) [2022-11-21 13:45:41,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31801 states to 31801 states and 44980 transitions. [2022-11-21 13:45:41,865 INFO L78 Accepts]: Start accepts. Automaton has 31801 states and 44980 transitions. Word has length 571 [2022-11-21 13:45:41,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:45:41,865 INFO L495 AbstractCegarLoop]: Abstraction has 31801 states and 44980 transitions. [2022-11-21 13:45:41,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82) [2022-11-21 13:45:41,866 INFO L276 IsEmpty]: Start isEmpty. Operand 31801 states and 44980 transitions. [2022-11-21 13:45:41,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2022-11-21 13:45:41,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:45:41,940 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 11, 11, 11, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:41,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 13:45:42,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:42,156 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:45:42,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:42,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1099444786, now seen corresponding path program 1 times [2022-11-21 13:45:42,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:42,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56101680] [2022-11-21 13:45:42,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:42,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:42,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:42,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56101680] [2022-11-21 13:45:42,484 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-21 13:45:42,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289649577] [2022-11-21 13:45:42,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:42,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:42,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:45:42,487 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:45:42,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 13:45:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:44,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 5263 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 13:45:44,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:45:44,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 1277 trivial. 0 not checked. [2022-11-21 13:45:44,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:45:44,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289649577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:44,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:44,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:45:44,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690324367] [2022-11-21 13:45:44,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:44,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:45:44,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:44,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:45:44,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:45:44,428 INFO L87 Difference]: Start difference. First operand 31801 states and 44980 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 2 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2022-11-21 13:45:46,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:45:46,106 INFO L93 Difference]: Finished difference Result 65515 states and 92973 transitions. [2022-11-21 13:45:46,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:45:46,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 2 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) Word has length 659 [2022-11-21 13:45:46,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:45:46,263 INFO L225 Difference]: With dead ends: 65515 [2022-11-21 13:45:46,263 INFO L226 Difference]: Without dead ends: 33761 [2022-11-21 13:45:46,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:45:46,350 INFO L413 NwaCegarLoop]: 2324 mSDtfsCounter, 77 mSDsluCounter, 2234 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 4558 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:45:46,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 4558 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:45:46,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33761 states. [2022-11-21 13:45:48,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33761 to 31841. [2022-11-21 13:45:48,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31841 states, 22445 states have (on average 1.3231900200490088) internal successors, (29699), 22795 states have internal predecessors, (29699), 7623 states have call successors, (7623), 1743 states have call predecessors, (7623), 1772 states have return successors, (7698), 7558 states have call predecessors, (7698), 7622 states have call successors, (7698) [2022-11-21 13:45:48,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31841 states to 31841 states and 45020 transitions. [2022-11-21 13:45:48,501 INFO L78 Accepts]: Start accepts. Automaton has 31841 states and 45020 transitions. Word has length 659 [2022-11-21 13:45:48,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:45:48,507 INFO L495 AbstractCegarLoop]: Abstraction has 31841 states and 45020 transitions. [2022-11-21 13:45:48,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 2 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2022-11-21 13:45:48,507 INFO L276 IsEmpty]: Start isEmpty. Operand 31841 states and 45020 transitions. [2022-11-21 13:45:48,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2022-11-21 13:45:48,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:45:48,598 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 11, 11, 11, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:48,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 13:45:48,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-21 13:45:48,820 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:45:48,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:48,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1180153910, now seen corresponding path program 1 times [2022-11-21 13:45:48,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:48,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506800320] [2022-11-21 13:45:48,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:48,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:49,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:49,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506800320] [2022-11-21 13:45:49,217 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-21 13:45:49,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585260543] [2022-11-21 13:45:49,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:49,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:49,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:45:49,219 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:45:49,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 13:45:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:51,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 5396 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:45:51,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:45:51,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 1283 trivial. 0 not checked. [2022-11-21 13:45:51,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:45:51,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585260543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:51,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:51,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 13:45:51,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86450388] [2022-11-21 13:45:51,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:51,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:45:51,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:51,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:45:51,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:45:51,322 INFO L87 Difference]: Start difference. First operand 31841 states and 45020 transitions. Second operand has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 2 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2022-11-21 13:45:53,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:45:53,865 INFO L93 Difference]: Finished difference Result 78261 states and 110772 transitions. [2022-11-21 13:45:53,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:45:53,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 2 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) Word has length 661 [2022-11-21 13:45:53,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:45:54,117 INFO L225 Difference]: With dead ends: 78261 [2022-11-21 13:45:54,118 INFO L226 Difference]: Without dead ends: 46467 [2022-11-21 13:45:54,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 659 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:45:54,211 INFO L413 NwaCegarLoop]: 4150 mSDtfsCounter, 2341 mSDsluCounter, 5954 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2341 SdHoareTripleChecker+Valid, 10104 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:45:54,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2341 Valid, 10104 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 13:45:54,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46467 states. [2022-11-21 13:45:56,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46467 to 31849. [2022-11-21 13:45:56,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31849 states, 22453 states have (on average 1.32289671758785) internal successors, (29703), 22803 states have internal predecessors, (29703), 7623 states have call successors, (7623), 1743 states have call predecessors, (7623), 1772 states have return successors, (7698), 7558 states have call predecessors, (7698), 7622 states have call successors, (7698) [2022-11-21 13:45:56,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31849 states to 31849 states and 45024 transitions. [2022-11-21 13:45:56,517 INFO L78 Accepts]: Start accepts. Automaton has 31849 states and 45024 transitions. Word has length 661 [2022-11-21 13:45:56,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:45:56,518 INFO L495 AbstractCegarLoop]: Abstraction has 31849 states and 45024 transitions. [2022-11-21 13:45:56,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 2 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2022-11-21 13:45:56,519 INFO L276 IsEmpty]: Start isEmpty. Operand 31849 states and 45024 transitions. [2022-11-21 13:45:56,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2022-11-21 13:45:56,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:45:56,585 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:45:56,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 13:45:56,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:56,802 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:45:56,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:45:56,803 INFO L85 PathProgramCache]: Analyzing trace with hash -551889840, now seen corresponding path program 1 times [2022-11-21 13:45:56,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:45:56,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545602] [2022-11-21 13:45:56,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:56,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:45:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:57,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:45:57,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545602] [2022-11-21 13:45:57,441 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-21 13:45:57,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405322383] [2022-11-21 13:45:57,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:45:57,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:45:57,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:45:57,443 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:45:57,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 13:45:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:45:59,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 5889 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 13:45:59,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:45:59,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1768 backedges. 605 proven. 0 refuted. 0 times theorem prover too weak. 1163 trivial. 0 not checked. [2022-11-21 13:45:59,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:45:59,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405322383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:45:59,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:45:59,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:45:59,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894938711] [2022-11-21 13:45:59,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:45:59,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:45:59,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:45:59,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:45:59,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:45:59,459 INFO L87 Difference]: Start difference. First operand 31849 states and 45024 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 3 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (99), 3 states have call predecessors, (99), 3 states have call successors, (99) [2022-11-21 13:46:01,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:46:01,526 INFO L93 Difference]: Finished difference Result 75461 states and 106717 transitions. [2022-11-21 13:46:01,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:46:01,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 3 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (99), 3 states have call predecessors, (99), 3 states have call successors, (99) Word has length 705 [2022-11-21 13:46:01,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:46:01,853 INFO L225 Difference]: With dead ends: 75461 [2022-11-21 13:46:01,853 INFO L226 Difference]: Without dead ends: 43659 [2022-11-21 13:46:01,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 703 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:46:01,935 INFO L413 NwaCegarLoop]: 2924 mSDtfsCounter, 1953 mSDsluCounter, 2046 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1953 SdHoareTripleChecker+Valid, 4970 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:46:01,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1953 Valid, 4970 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:46:01,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43659 states. [2022-11-21 13:46:03,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43659 to 43531. [2022-11-21 13:46:03,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43531 states, 30943 states have (on average 1.3274084607180945) internal successors, (41074), 31407 states have internal predecessors, (41074), 10093 states have call successors, (10093), 2459 states have call predecessors, (10093), 2494 states have return successors, (10186), 9996 states have call predecessors, (10186), 10092 states have call successors, (10186) [2022-11-21 13:46:04,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43531 states to 43531 states and 61353 transitions. [2022-11-21 13:46:04,128 INFO L78 Accepts]: Start accepts. Automaton has 43531 states and 61353 transitions. Word has length 705 [2022-11-21 13:46:04,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:46:04,129 INFO L495 AbstractCegarLoop]: Abstraction has 43531 states and 61353 transitions. [2022-11-21 13:46:04,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 3 states have call successors, (100), 3 states have call predecessors, (100), 3 states have return successors, (99), 3 states have call predecessors, (99), 3 states have call successors, (99) [2022-11-21 13:46:04,130 INFO L276 IsEmpty]: Start isEmpty. Operand 43531 states and 61353 transitions. [2022-11-21 13:46:04,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2022-11-21 13:46:04,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:46:04,250 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:46:04,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-21 13:46:04,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:46:04,464 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:46:04,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:46:04,465 INFO L85 PathProgramCache]: Analyzing trace with hash 2048626175, now seen corresponding path program 1 times [2022-11-21 13:46:04,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:46:04,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428357899] [2022-11-21 13:46:04,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:04,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:46:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:04,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:46:04,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428357899] [2022-11-21 13:46:04,937 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-21 13:46:04,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614362700] [2022-11-21 13:46:04,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:04,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:46:04,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:46:04,939 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:46:04,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 13:46:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:06,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 5940 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:46:06,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:46:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1794 backedges. 762 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2022-11-21 13:46:08,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:46:08,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614362700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:46:08,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:46:08,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 13:46:08,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245731130] [2022-11-21 13:46:08,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:46:08,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:46:08,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:46:08,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:46:08,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:46:08,081 INFO L87 Difference]: Start difference. First operand 43531 states and 61353 transitions. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 4 states have call successors, (100), 4 states have call predecessors, (100), 3 states have return successors, (99), 3 states have call predecessors, (99), 3 states have call successors, (99) [2022-11-21 13:46:14,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:46:14,032 INFO L93 Difference]: Finished difference Result 120283 states and 169354 transitions. [2022-11-21 13:46:14,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:46:14,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 4 states have call successors, (100), 4 states have call predecessors, (100), 3 states have return successors, (99), 3 states have call predecessors, (99), 3 states have call successors, (99) Word has length 724 [2022-11-21 13:46:14,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:46:14,607 INFO L225 Difference]: With dead ends: 120283 [2022-11-21 13:46:14,607 INFO L226 Difference]: Without dead ends: 120275 [2022-11-21 13:46:14,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 721 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:46:14,669 INFO L413 NwaCegarLoop]: 3802 mSDtfsCounter, 4025 mSDsluCounter, 3985 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4025 SdHoareTripleChecker+Valid, 7787 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-21 13:46:14,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4025 Valid, 7787 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-21 13:46:14,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120275 states. [2022-11-21 13:46:20,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120275 to 115770. [2022-11-21 13:46:20,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115770 states, 82334 states have (on average 1.3269852065975174) internal successors, (109256), 83594 states have internal predecessors, (109256), 26776 states have call successors, (26776), 6564 states have call predecessors, (26776), 6659 states have return successors, (27023), 26503 states have call predecessors, (27023), 26775 states have call successors, (27023) [2022-11-21 13:46:21,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115770 states to 115770 states and 163055 transitions. [2022-11-21 13:46:21,101 INFO L78 Accepts]: Start accepts. Automaton has 115770 states and 163055 transitions. Word has length 724 [2022-11-21 13:46:21,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:46:21,103 INFO L495 AbstractCegarLoop]: Abstraction has 115770 states and 163055 transitions. [2022-11-21 13:46:21,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 4 states have call successors, (100), 4 states have call predecessors, (100), 3 states have return successors, (99), 3 states have call predecessors, (99), 3 states have call successors, (99) [2022-11-21 13:46:21,103 INFO L276 IsEmpty]: Start isEmpty. Operand 115770 states and 163055 transitions. [2022-11-21 13:46:21,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2022-11-21 13:46:21,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:46:21,255 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 14, 14, 14, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:46:21,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-21 13:46:21,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 13:46:21,456 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:46:21,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:46:21,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1514818082, now seen corresponding path program 1 times [2022-11-21 13:46:21,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:46:21,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782614496] [2022-11-21 13:46:21,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:21,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:46:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:21,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:46:21,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782614496] [2022-11-21 13:46:21,832 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-21 13:46:21,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289010436] [2022-11-21 13:46:21,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:46:21,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:46:21,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:46:21,834 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:46:21,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e77d232-1329-4c49-9ffc-cf895a0cfff7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 13:46:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:46:23,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 5982 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 13:46:23,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:46:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1802 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 1536 trivial. 0 not checked. [2022-11-21 13:46:25,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:46:25,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289010436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:46:25,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:46:25,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:46:25,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448524574] [2022-11-21 13:46:25,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:46:25,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:46:25,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:46:25,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:46:25,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:46:25,051 INFO L87 Difference]: Start difference. First operand 115770 states and 163055 transitions. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 3 states have call successors, (93), 3 states have call predecessors, (93), 2 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92)